Consulta: subjectFacets:"Diversity"
Registros recuperados: 414
Data/hora: 16/06/2024 20:01:23

Microfungal Composition in an Astelia-Donatia Cushion Peatland in Tierra Del Fuego, Argentina
Provedor de dados: 66
Autores: Paredes,Noelia I.; Consolo,Verónica F.; Pancotto,Verónica A.; Fritz,Christian; Barrera,Marcelo D.; Arambarri,Angélica M.; Salerno,Graciela L.
Southern Hemisphere peatlands store substantial amounts of soil carbon. Despite their importance in the global carbon cycle, little is known about decomposition processes and the associated fungal diversity. The present study describes the composition of fungal assemblage in two depths from a cushion peatland of predominating Astelia (Asteliaceae) and Donatia (Donatiaceae) species in Moat, Tierra del Fuego. From 48 samples processed, we obtained 338 isolates. Using different culturing methodologies, through direct and microscopic observation and using molecular methods we identified 38 fungal species and 18 genera of Ascomycetes and Zygomycetes. Isolates belonging to Ascomycetes were the most abundant, with dominance of Penicillium and Trichoderma. We...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astelia-Donatia; Diversity; Fungal community; PCR- RFLP; Peatland.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932014000100007

Estructura y crecimiento de tres especies arbóreas en una selva mediana subperennifolia en Quintana Roo.
Provedor de dados: 32
Autores: Carreón Santos, Roy Jabin.
En Quintana Roo, el aprovechamiento forestal maderable se ha dirigido tradicional y principalmente a especies de alto valor comercial, tales como Cedrela odorata L. y Swietenia macrophylla King, enfocando los pocos estudios técnicos existentes a dichas especies. Recientemente, también a otras especies se les ha dado valor económico y han adquirido demanda en el mercado, para lo cual se necesitan estudios de repoblación, estructura y diversidad así como de crecimiento en diámetro, que apoyen la toma de decisiones en torno a los tratamientos silvícolas que se deben aplicar. Con la finalidad de contribuir a la obtención de dicha información, los objetivos de la presente tesis fue analizar la estructura y diversidad arbórea de la selva mediana subperennifolia...
Palavras-chave: Selva mediana subperennifolia; Crecimiento en diámetro; Bandas dendrométricas; Estructura; Diversidad; Semi-evergreen tropical forest; Diameter growth; Dendrometer bands; Structure; Diversity; Forestal; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/1949

Desarrollo de un índice de integridad biológica avifáunico para los humedales de la reserva de la biosfera pantanosa de Centla, Tabasco
Provedor de dados: 32
Autores: Córdova Avalos, Antonio.
Se evaluó la salud de los Pantanos de Centla, Tabasco, mediante un índice de  integridad biológica (IBI) utilizando a las aves como indicadoras. Se seleccionaron sitios de  manglar y popal-tular con diferente grado de perturbación (conservado, semiconservado y  perturbado). Un análisis de cambio de cobertura con imágenes de satélites Landsat MSS 1976  y ETM 2002 mostró pérdidas de cobertura de manglar de 21─31 % y tasas de deforestación  anual de 0.8 ─ 1.2 %. El registro histórico de especies de aves fue de 328, detectándose 189  en este estudio, de las cuales 13 fueron nuevos registros para la Reserva. Se encontraron  diferencias significativas en el número de especies entre sitios (α=0.05). De acuerdo con el  estimador de cobertura basado en abundancias,...
Tipo: Tesis
Palavras-chave: Aves; Integridad biológica; Diversidad; Calidad del agua; Humedales; Aves; Integridad biológica; Diversidad; Calidad del agua; Humedales; BIrds; Biological integrity; Diversity; Water quality; Wetlands; Birds; Biological integrity; Diversity; Water quality; Wetlands.
Ano: 2007
URL: http://hdl.handle.net/10521/1185

Manejo y conservación de germoplasma de la familia Caricaceae.
Provedor de dados: 32
Autores: Romero Rodríguez, Jorge Arturo.
Especies de la familia Caricaceae han encontrado condiciones favorables para desarrollar y diversificarse en México, cinco de los géneros que prosperan en América, cuentan con al menos una especie en el país y se considera que la especie más importante económicamente, Carica papaya L., tiene su centro de alta diversidad en el sureste del país, además de dos géneros endémicos que prosperan en regiones semiáridas y de bosque mesófilo. Sin embargo, la investigación que se realiza al respecto es limitada y buena parte de la información existente de la familia proviene de otras latitudes. Dada la responsabilidad del país de salvaguardar y dar uso eficiente a la diversidad de Carica papaya y demás integrantes de la familia Caricaceae, la presente investigación...
Palavras-chave: Germoplasma; Diversidad; Longevidad; Latencia; Acondicionamiento; Germplasm; Diversity; Longevity; Latency; Profit; Producción de Semillas; Doctorado.
Ano: 2013
URL: http://hdl.handle.net/10521/2192

Calidad de fruto de jitomate en acervos y poblaciones nativas de México.
Provedor de dados: 32
Autores: Salgado Meraz, Lilia.
Variedades cultivadas y silvestres de jitomate (Lycopersicon esculentum), se encuentran aún en diferentes regiones de México. Sin embargo, la extensión de la diversidad y del grado de variación en características determinantes de la calidad entre acervos genéticos y entre poblaciones mexicanas de jitomate es desconocida. Este estudio se realizó para evaluar la calidad del fruto de 31 poblaciones autóctonas, originarias de ocho regiones del centro, sur y sureste de México, así como del híbrido Caimán y un grupo de 3 poblaciones derivadas. Las poblaciones se cultivaron en invernadero e hidroponía en la primavera de 2008. En frutos del tercer y cuarto racimos, en diferentes estados de madurez, se midieron firmeza, vida de anaquel, luminosidad, ángulo de tono,...
Palavras-chave: Lycopersicon esculentum; Calidad; Población nativa; Diversidad; Reservorio genético; Quality; Landrace; Diversity; Genetic reservoir; Maestría; Fruticultura.
Ano: 2011
URL: http://hdl.handle.net/10521/396

Vegetación y etnobotánica de milpas y potreros en la región de Los Choles, en el municipio de Candelaria, Campeche.
Provedor de dados: 32
Autores: Guillermo Gómez, María Asunción.
Los potreros están cubriendo una proporción cada vez más grande del trópico húmedo de México, mientras el área de selvas y del cultivo de maíz ha ido en descenso. Pero, existe muy poca información sobre la composición florística y ecológica de estos pastizales inducidos. En este trabajo se compara la florística, fitogeografía, diversidad, etnobotánica y usos de la vegetación en milpas y potreros en el municipio de Candelaria, Campeche, entre la población de la etnia chol; además de que se describe el manejo de cada tipo de vegetación (milpa/potrero) con detalle. Se parte de la premisa que las milpas tendrán mayor diversidad, una proporción más grande de especies nativas y útiles, y que son recolectadas en cantidades mayores que los potreros, por ser el...
Palavras-chave: Arvense; Diversidad; Cobertura; Frecuencia; Aprovechamientos; Weeds; Diversity; Coverage; Frequency; Uses; Botánica; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2091

Desarrollo de un índice de integrridad biológica avifáunico para los humedales de la reserva de la biosfera pantanosa de Centla, Tabasco
Provedor de dados: 32
Autores: Córdova Avalos, Antonio.
Se evaluó la salud de los Pantanos de Centla, Tabasco, mediante un índice de  integridad biológica (IBI) utilizando a las aves como indicadoras. Se seleccionaron sitios de  manglar y popal-tular con diferente grado de perturbación (conservado, semiconservado y  perturbado). Un análisis de cambio de cobertura con imágenes de satélites Landsat MSS 1976  y ETM 2002 mostró pérdidas de cobertura de manglar de 21─31 % y tasas de deforestación  anual de 0.8 ─ 1.2 %. El registro histórico de especies de aves fue de 328, detectándose 189  en este estudio, de las cuales 13 fueron nuevos registros para la Reserva. Se encontraron  diferencias significativas en el número de especies entre sitios (α=0.05). De acuerdo con el  estimador de cobertura basado en abundancias,...
Palavras-chave: Aves; Integridad biológica; Diversidad; Calidad del agua; Humedales birds; Biological integrity; Diversity; Water quality; Wetlands.
Ano: 2012
URL: http://hdl.handle.net/10521/822

Distribución y diversidad de las "muñas" género Minthostachys (Lamiaceae) en Huanuco, Perú.
Provedor de dados: 32
Autores: Tello Villavicencio, Milka Nelly.
El 90% de lamiaceas denominadas “muñas” en Huánuco, Perú  son especies del género Minthostachys y 10% restante de géneros relacionados. Las especies de Minthostachys encontradas fueron tres: Minthostachys mollis (Kunth) Griseb., con sus tres variedades, var. mollis, var. hybrida Schmidt-Leb. y var. mandoniana (Briq.) Schmidt-Leb., Minthostachys spicata (Benth.) Epling y Minthostachys latifolia Schmidt-Leb., así como una población sin identificar taxonómicamente, que probablemente es un híbrido intergenérico con Satureja. Excepto por Minthostachys mollis var. mollis se trata de nuevos registros para Huánuco; la variedad hybrida es un nuevo registro para Perú. Este trabajo documenta las especies encontradas, analiza la diferenciación geográfica y ecológica,...
Palavras-chave: Diversidad; Etnobotánica; Clusa; Muña; Huánuco; Diversity; Ethnobotany; Doctorado; Genética.
Ano: 2011
URL: http://hdl.handle.net/10521/395

Desarrollo de un índice de integrridad biológica avifáunico para los humedales de la reserva de la biosfera pantanosa de Centla, Tabasco
Provedor de dados: 32
Autores: Córdova Avalos, Antonio.
Se evaluó la salud de los Pantanos de Centla, Tabasco, mediante un índice de  integridad biológica (IBI) utilizando a las aves como indicadoras. Se seleccionaron sitios de  manglar y popal-tular con diferente grado de perturbación (conservado, semiconservado y  perturbado). Un análisis de cambio de cobertura con imágenes de satélites Landsat MSS 1976  y ETM 2002 mostró pérdidas de cobertura de manglar de 21─31 % y tasas de deforestación  anual de 0.8 ─ 1.2 %. El registro histórico de especies de aves fue de 328, detectándose 189  en este estudio, de las cuales 13 fueron nuevos registros para la Reserva. Se encontraron  diferencias significativas en el número de especies entre sitios (α=0.05). De acuerdo con el  estimador de cobertura basado en abundancias,...
Palavras-chave: Aves; Integridad biológica; Diversidad; Calidad del agua; Humedales birds; Biological integrity; Diversity; Water quality; Wetlands.
Ano: 2012
URL: http://hdl.handle.net/10521/801

Caracterización morfológica, estudio molecular y determinación de azúcares en zapote mamey (Pouteria sapota Jacq. H.E. Moore &amp; Stearn).
Provedor de dados: 32
Autores: Arellano Durán, Nely.
La importancia del zapote mamey radica en el valor comercial de sus frutos por su uso en la alimentación humana debido a sus características organolépticas y nutricionales. México es centro de origen de este frutal, distribuyéndose en 15 estados de la república, su propagación ha sido por semilla por lo cual existe gran diversidad genética. El objetivo del presente estudio fue hacer la caracterización morfológica de 12 selecciones provenientes de Puebla, Veracruz y Yucatán, así como el estudio molecular mediante la técnica AFLP`s incluyendo siete materiales de Guerrero y cuatro especies de la familia de las Sapotáceas (Pouteria campechiana, P. fossicola, Manilkara zapota y Chrisophyllum cainito. También se determinó el perfil y concentración de azúcares en...
Palavras-chave: Pouteria sapota; Diversidad; Análisis de conglomerados; Marcadores moleculares; Azúcares; Estaquiosa; Diversity; Cluster analysis; Molecular markers; Sugar; Stachyose; Fruticultura; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/1091

Diversidad morfológica y agronómica de poblaciones nativas de jitomate del centro, sur y sureste de México.
Provedor de dados: 32
Autores: Moreno Ramírez, Yolanda del Rocío.
En el ciclo Otoño-Invierno 2008 se evaluaron en planta, estructura floral y fruto, 30 poblaciones nativas procedentes de Campeche, Yucatán, Guerrero, Oaxaca, Puebla y la región Puebla-Hidalgo, teniendo como testigos cuatro líneas derivadas de poblaciones mejoradas y el cultivar Caimán® Enza Zaden. Los siete grupos se establecieron con base en un diseño factorial al azar con tres repeticiones y cuatro individuos por repetición; las poblaciones dentro de cada conjunto se analizaron con base en un diseño de bloques al azar. La evaluación se realizó en condiciones de hidroponía con solución nutritiva universal Steiner e invernadero, a la densidad de cinco plantas por m2. Se analizaron 36 características cuantitativas y 17 cualitativas en componentes...
Palavras-chave: Lycopersicon esculentum; Morfología; Población nativa; Acervo genético; Diversidad; Morphology; Landraces; Genetic stock; Diversity; Maestría; Fisiología vegetal.
Ano: 2010
URL: http://hdl.handle.net/10521/169

Biodiversidad y función de hongos micorrízicos-arbusculares en huertas de papayo con diferente sistema de manejo de producción de isla, Veracruz
Provedor de dados: 32
Autores: Sangabriel Conde, Wendy.
Los hongos micorrízicos arbusculares (HMA) forman una asociación simbiótica con las  raíces de las plantas, favoreciendo un incremento en la asimilación de nutrientes del  suelo. Los HMA colonizan la mayoría de los cultivos agrícolas; entre ellos, el cultivo del  papayo presenta alto grado de dependencia micorrízica. Sin embargo, se cree que esta  asociación es afectada por las prácticas de manejo utilizadas. Por lo que, en este  trabajo se estudió la diversidad y distribución de especies de HMA así como la  colonización y potencial infectivo de éstas en huertas de papayo bajo diferente manejo  de producción en Isla, Veracruz.     Como resultado de esta investigación, se presenta esta tesis estructurada  fundamentalmente en cuatro capítulos. El primero,...
Tipo: Tesis
Palavras-chave: Diversidad; Esporas; Hongos micorrízico-arbusculares; Maestría; Agroecosistemas Tropicales; Diversity; Spores; Arbuscular mycorrhizal fungi.
Ano: 2008
URL: http://hdl.handle.net/10521/1508

Composición florística, estructura y manejo de los huertos familiares del municipio de Santo Domíngo Huehuetlán el Grande, Puebla
Provedor de dados: 32
Autores: Sánchez Velázquez, Daniel.
Los huertos familiares son sistemas agrícolas tradicionales y proporcionan una  serie de beneficios tangibles e intangibles a lo largo del año a las familias  campesinas. La mayoría de los estudios sobre huertos en México se han centrado  en zonas tropicales (principalmente en la península de Yucatán) y se tiene poco  documentado la importancia de éstos sistemas para las zonas con clima seco. El  estudio se llevó a cabo en el municipio de Huehuetlán el Grande, del mes de mayo  del 2006 a abril del 2007. Se estudian los criterios que la población de Huehuetlán  considera para catalogar a los huertos familiares de su entorno como deseables o  menos deseables. Para ello se entrevistó aleatoriamente al 10% de los hogares  del municipio sobre su percepción, el...
Tipo: Tesis
Palavras-chave: Riego; Plantas útiles; Frutales; Diversidad; Etnobotánica; Maestría; Botánica; Irrigation; Useful plant; Fruit trees; Diversity; Ethnobotany.
Ano: 2008
URL: http://hdl.handle.net/10521/1260

Distribución y diversidad de las "muñas" género Minthostachys (Lamiaceae) en Huanuco, Perú.
Provedor de dados: 32
Autores: Tello Villavivencio, Milka Nelly.
El 90% de lamiaceas denominadas “muñas” en Huánuco, Perú  son especies del género Minthostachys y 10% restante de géneros relacionados. Las especies de Minthostachys encontradas fueron tres: Minthostachys mollis (Kunth) Griseb., con sus tres variedades, var. mollis, var. hybrida Schmidt-Leb. y var. mandoniana (Briq.) Schmidt-Leb., Minthostachys spicata (Benth.) Epling y Minthostachys latifolia Schmidt-Leb., así como una población sin identificar taxonómicamente, que probablemente es un híbrido intergenérico con Satureja. Excepto por Minthostachys mollis var. mollis se trata de nuevos registros para Huánuco; la variedad hybrida es un nuevo registro para Perú. Este trabajo documenta las especies encontradas, analiza la diferenciación geográfica y ecológica,...
Palavras-chave: Diversidad; Etnobotánica; Clusa; Muña; Huánuco; Diversity; Ethnobotany; Doctorado; Genética.
Ano: 2011
URL: http://hdl.handle.net/10521/395

Diversidad agronómica y morfológica de jitomates arriñonados y tipo pimiento de alto valor comercial en los estados de Puebla y Oaxaca.
Provedor de dados: 32
Autores: Bonilla Barrientos, Olga.
En algunas regiones de los estados de Puebla y Oaxaca, los jitomates (Solanum lycopersicum L.) nativos conocidos como ‘arriñonados’, ‘chinos criollos’, ‘cuadrados’ o ‘tipo pimiento’, ‘ojo de venado’ y ‘cereza’, son ampliamente cultivados para el  autoconsumo y su comercialización local. Estos materiales deben estudiarse, pues poseen un gran valor cultural y alimenticio, además son fuentes de germoplasma para usarse en programas de mejoramiento genético del jitomate en México. Con el objetivo de estudiar la diversidad agronómica y morfológica de jitomates nativos de amplio uso local en Puebla y Oaxaca, para aprovecharlos en programas de mejoramiento en el corto, mediano y largo plazo, se evaluaron 40 colectas de jitomate nativo de Puebla y Oaxaca, más el...
Palavras-chave: Solanum lycopersicum L.; Diversidad; Germoplasma; Mejoramiento; Diversity; Germplasm; Plant breeding; Genética; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/1874

Diversidad genética en el patosistema maíz-fusarium en el Altiplano de México.
Provedor de dados: 32
Autores: Briones Reyes, Dolores.
Las variantes de maíz (Zea mays L.) nativas (criollos) preservadas por los agricultores a través de generaciones, constituyen más de 80% del área sembrada con maíz en México; la pudrición de mazorca por Fusarium spp. provoca pérdidas de hasta 30%. El estudio de las poblaciones de maíz y sus patógenos como patosistema tiene sentido, pues en la variación genética del maíz nativo se puede encontrar resistencia/tolerancia a enfermedades; el conocimiento de la estructura de las poblaciones de maíz y del patógeno de manera integral ayudaría a resolver el problema de pudrición, aumentar la producción de grano y conservar la diversidad del maíz. En 2010 se colectaron 56 poblaciones de maíz nativo con y sin síntomas de pudrición de mazorca en cinco estados en...
Palavras-chave: Diversidad; Patosistema; Fusarium spp.; Maíz nativo; Pudrición de mazorca; Virulencia; Diversity; Pathosystem; Native maize; Ear rot; Virulence; Genética; Doctorado.
Ano: 2013
URL: http://hdl.handle.net/10521/2163

Estudio faunístico de la familia Bruchidae (Insecta: Coleoptera) del estado de Morelos, México.
Provedor de dados: 32
Autores: Romero Gómez, Guillermo.
Se realizó un estudio faunístico de las especies de Bruchidae y de sus plantas hospederas para el estado de Morelos, para lo cual se realizaron colectas de estos insectos por medio de una red de golpeo, asi como colecta de plantas hospederas en los años 2010 y 2011. La información se complementó con registros de la base de datos BRUCOL. Se registró un total de 125 especies de brúquidos, las cuales se encuentran distribuidas en 19 géneros; de los cuales Acanthoscelides presentó el mayor número de especies (49), seguido de los géneros Merobruchus y Sennius con diez especies cada uno, los géneros Amblycerus y Zabrotes (9), Megacurus (8), Stator (7),  Mimosestes (6),  Meibomeus (5), Algarobius y Dahlibruchus (2); finalmente de los géneros Callosobruchus,...
Palavras-chave: Gorgojos; Plantas hospederas; Diversidad; Taxonomía; Seed beetles; Host plants; Diversity; Taxonomy; Entomología y Acarología; Doctorado.
Ano: 2013
URL: http://hdl.handle.net/10521/1876

Patrón alimentario y horticultura sustentable peri-urbana en familias de Ciudad Cardel, Veracruz, México.
Provedor de dados: 32
Autores: Toral Juárez, Marco Antonio.
En este trabajo se caracteriza el patrón alimentario de las familias peri-urbanas de ciudad Cardel, Veracruz y se determina su asociación con el nivel socioeconómico familiar, de la misma forma se identifican factores que influyen en la disposición de las madres de familia para practicar la horticultura peri-urbana y por último se estima la rentabilidad de la producción de hortalizas en diversos tipos de contenedores de material reciclados. Se realizó en dos etapas: diagnóstico y experimental. En la etapa de diagnóstico se entrevistó a 114 madres de familia clasificadas de acuerdo a su nivel socioeconómicos por el método Graffar, se analizó una serie de variables que permitieron conocer el patrón alimentario: diversidad alimentaria se determinó por el...
Palavras-chave: Hábito; Alimento; Diversidad; Disponibilidad; Rentabilidad; Madres; Habit; Food; Diversity; Availability; Profitability; Mothers; Agroecositemas Tropicales; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/1831

Diversidad morfológica y agronómica de poblaciones nativas de jitomate del centro, sur y sureste de México.
Provedor de dados: 32
Autores: Moreno Ramírez, Yolanda del Rocío.
En el ciclo Otoño-Invierno 2008 se evaluaron en planta, estructura floral y fruto, 30 poblaciones nativas procedentes de Campeche, Yucatán, Guerrero, Oaxaca, Puebla y la región Puebla-Hidalgo, teniendo como testigos cuatro líneas derivadas de poblaciones mejoradas y el cultivar Caimán® Enza Zaden. Los siete grupos se establecieron con base en un diseño factorial al azar con tres repeticiones y cuatro individuos por repetición; las poblaciones dentro de cada conjunto se analizaron con base en un diseño de bloques al azar. La evaluación se realizó en condiciones de hidroponía con solución nutritiva universal Steiner e invernadero, a la densidad de cinco plantas por m2. Se analizaron 36 características cuantitativas y 17 cualitativas en componentes...
Palavras-chave: Lycopersicon esculentum; Morfología; Población nativa; Acervo genético; Diversidad; Morphology; Landraces; Genetic stock; Diversity; Maestría; Fisiología vegetal.
Ano: 2010
URL: http://hdl.handle.net/10521/169

Calidad de fruto de jitomate en acervos y poblaciones nativas de México.
Provedor de dados: 32
Autores: Salgado Meraz, Lilia.
Variedades cultivadas y silvestres de jitomate (Lycopersicon esculentum), se encuentran aún en diferentes regiones de México. Sin embargo, la extensión de la diversidad y del grado de variación en características determinantes de la calidad entre acervos genéticos y entre poblaciones mexicanas de jitomate es desconocida. Este estudio se realizó para evaluar la calidad del fruto de 31 poblaciones autóctonas, originarias de ocho regiones del centro, sur y sureste de México, así como del híbrido Caimán y un grupo de 3 poblaciones derivadas. Las poblaciones se cultivaron en invernadero e hidroponía en la primavera de 2008. En frutos del tercer y cuarto racimos, en diferentes estados de madurez, se midieron firmeza, vida de anaquel, luminosidad, ángulo de tono,...
Palavras-chave: Lycopersicon esculentum; Calidad; Población nativa; Diversidad; Reservorio genético; Quality; Landrace; Diversity; Genetic reservoir; Maestría; Fruticultura.
Ano: 2011
URL: http://hdl.handle.net/10521/396

Native and exotic woody vegetation communities in domestic gardens in relation to social and environmental factors
Provedor de dados: 7
Autores: van Heezik, Yolanda M.; University of Otago; yolanda.vanheezik@otago.ac.nz; Freeman, Claire; University of Otago; cf@geography.otago.ac.nz; Porter, Stefan; University of Otago; nz_seti@hotmail.com; Dickinson, Katharine J. M.; University of Otago; kath.dickinson@botany.otago.ac.nz.
Tipo: Peer-Reviewed Reports
Palavras-chave: Assemblages; Communities; Community composition; Diversity; Plants.
Ano: 2014

Biocultural Refugia: Combating the Erosion of Diversity in Landscapes of Food Production
Provedor de dados: 7
Autores: Barthel, Stephan; Stockholm Resilience Centre, Stockholm University, Sweden; Department of History, Stockholm University, Stockholm, Sweden; stephan.barthel@historia.su.se; Crumley, Carole L.; Stockholm Resilience Centre, Stockholm University, Sweden; Department of Archaeology and Ancient History, Uppsala University, Uppsala, Sweden; Swedish Biodiversity Centre, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden; crumley@live.unc.edu; Svedin, Uno; Stockholm Resilience Centre, Stockholm University, Sweden ; uno.svedin@gmail.com.
Tipo: Peer-Reviewed article
Palavras-chave: Agriculture; Biocultural refugia; Diversity; Ecosystem restoration; Resilience; Small holders; Stewardship.
Ano: 2013

Complexity, Modeling, and Natural Resource Management
Provedor de dados: 7
Autores: Cilliers, Paul; University of Stellenbosch; fpc@sun.ac.za; Biggs, Harry C.; South African National Parks; biggs@sanparks.org; Blignaut, Sonja; The Narrative Lab; sonja@narrativelab.co.za; Choles, Aiden G.; The Narrative Lab; aiden@narrativelab.co.za; Hofmeyr, Jan-Hendrik S.; University of Stellenbosch; jhsh@sun.ac.za; Jewitt, Graham P. W.; University of Kwazulu Natal; jewittg@ukzn.ac.za; Roux, Dirk J.; South African National Parks; Nelson Mandela Metropolitan University; Monash South Africa; dirkr@sanparks.org.
This paper contends that natural resource management (NRM) issues are, by their very nature, complex and that both scientists and managers in this broad field will benefit from a theoretical understanding of complex systems. It starts off by presenting the core features of a view of complexity that not only deals with the limits to our understanding, but also points toward a responsible and motivating position. Everything we do involves explicit or implicit modeling, and as we can never have comprehensive access to any complex system, we need to be aware both of what we leave out as we model and of the implications of the choice of our modeling framework. One vantage point is never sufficient, as complexity necessarily implies that multiple (independent)...
Tipo: Peer-Reviewed Synthesis
Palavras-chave: Complex systems; Diversity; Management; Mental models; Resilience; Social complexity; Social&amp;#8211; Ecological systems.
Ano: 2013

Causes and Extent of Declines among Native North American Invertebrate Pollinators: Detection, Evidence, and Consequences
Provedor de dados: 7
Autores: Cane, James H; USDA-ARS; jcane@biology.usu.edu; Tepedino, Vincent J; USDA-ARS; andrena@biology.usu.edu.
Ecosystem health and agricultural wealth in North America depend on a particular invertebrate fauna to deliver pollination services. Extensive losses in pollinator guilds and communities can disrupt ecosystem integrity, a circumstance that today forces most farmers to rely on honey bees for much fruit and seed production. Are North America's invertebrate pollinator faunas already widely diminished or currently threatened by human activities? How would we know, what are the spatiotemporal scales for detection, and which anthropogenic factors are responsible? Answers to these questions were considered by participants in a workshop sponsored by the National Center for Ecological Analysis and Synthesis in October of 1999, and these questions form the nucleus...
Tipo: Peer-Reviewed Reports
Palavras-chave: Apiformes; Apoidea; Insecta; Conservation; Diversity; Land-use change; Native invertebrate pollinators; North America; Pollination; Pollinator declines.
Ano: 2001

Diversity, flexibility, and the resilience effect: lessons from a social-ecological case study of diversified farming in the northern Great Plains, USA
Provedor de dados: 7
Tipo: Peer-Reviewed Reports
Palavras-chave: Diversified farming system; Diversity; Drought; Resilience; Northern Great Plains  USA; Scale; Slow variables; Social-ecological systems; Sustainable agriculture; Values-based supply chain.
Ano: 2014

Invasion of Matrix Species in Small Habitat Patches
Provedor de dados: 7
The diversity, expressed as species richness in equal-sized samples, of wood-living beetles in successional stages of deciduous forest after forest fires approximately 100 years ago did not differ between patch sizes in this study. Thus, the crucial question for conservation is whether the lack of reduction in diversity in small patches means that a number of small patches can elevate the regional diversity as efficiently as can one larger area. In the present study, the smaller patches did not differ from larger patches in substrate availability, quality, or heterogeneity. The frequency of a group of species was measured as the number of occurrences, viz. the number of trees on which a species was found, summed over all species in the group. The number of...
Tipo: Peer-Reviewed Reports
Palavras-chave: Alpha (local) diversity; Beta (between-habitats) diversity; Deciduous forest; Disturbance; Diversity; Fire; Gamma (regional) diversity; Invasion; Matrix habitat; Patch size; Species-richness.
Ano: 1999

Biodiversity and Biodisparity
Provedor de dados: 7
Autores: DeVaney, Leif Allan ; University of Minnesota; deva0052@umn.edu.
Tipo: Peer-Reviewed Response
Palavras-chave: Biodisparity; Biodiversity; Disparity; Diversity.
Ano: 2010

Grassroots engagement with transition to sustainability: diversity and modes of participation in the international permaculture movement
Provedor de dados: 7
Autores: Ferguson, Rafter Sass; University of Illinois at Urbana-Champaign; fergusn2@illinois.edu; Lovell, Sarah T.; University of Illinois; stlovell@illinois.edu.
Tipo: Peer-Reviewed Reports
Palavras-chave: Diversity; Environmental movements; Grassroots networks; Permaculture.
Ano: 2015

Restoration of Midwest Oak Barrens: Structural Manipulation or Process-only?
Provedor de dados: 7
Autores: Nielsen, Scott; University of Alberta; scottn@ualberta.ca; Kirschbaum, Chad; University of Michigan; ckirschb@umich.edu; Haney, Alan; University of Wisconsin-Stevens Point; ahaney@uwsp.edu.
We investigated vegetation responses in terms of canopy, ground-layer diversity, and ecological species groups using two restoration treatments at two degraded oak barren and savanna sites in central Wisconsin, USA. The two restoration models tested were (1) process-only, which reintroduced fire in the form of prescribed burning, and (2) structural manipulation, which used prescribed burning following selective timber removal. Both methods have been widely promoted, debated, and investigated in the fire-prone ecosystems of western North America, but they have not been studied in midwestern ecosystems. Vegetation was monitored in permanent quadrats prior to and following treatment applications. All treatment responses were compared against trends at control...
Tipo: Peer-Reviewed Reports
Palavras-chave: Carex pensylvanica; Diversity; Wisconsin; Holdover species; Modal species; Oak barrens; Process-only; Restoration; Savannas; Structural manipulation.
Ano: 2003

Habitat Fragmentation and Native Bees: a Premature Verdict?
Provedor de dados: 7
Autores: Cane, James H; USDA-ARS; jcane@biology.usu.edu.
Few studies directly address the consequences of habitat fragmentation for communities of pollinating insects, particularly for the key pollinator group, bees (Hymenoptera: Apiformes). Bees typically live in habitats where nesting substrates and bloom are patchily distributed and spatially dissociated. Bee studies have all defined habitat fragments as remnant patches of floral hosts or forests, overlooking the nesting needs of bees. Several authors conclude that habitat fragmentation is broadly deleterious, but their own data show that some native species proliferate in sampled fragments. Other studies report greater densities and comparable diversities of native bees at flowers in some fragment size classes relative to undisrupted habitats, but find...
Tipo: Peer-Reviewed Reports
Palavras-chave: Apoidea; Bees; Conservation; Diversity; Habitat fragmentation; Land-use change; Pollination; Pollinator; Statistics; Taxonomy.
Ano: 2001

Ups and Downs in Pollinator Populations: When is there a Decline?
Provedor de dados: 7
Autores: Roubik, David Ward; Smithsonian Tropical Research Institute; roubikd@tivoli.si.edu.
Plant-pollinator systems inherently possess wide variation that limits the applicability of surveys on population dynamics or diversity. Stable habitats are scarcely studied, whereas dynamics in unprotected habitats are less predictable or more compromised by exotic organisms (Apis, in the case of bee surveys). An extensively replicated, long-term study of orchid-bees (Euglossini) was made in protected tropical moist forest in Panama. Over 47,000 bees were recorded in 124 monthly censuses employing 1952 counts. No aggregate trend in abundance occurred (from 1979 to 2000), although four individual species declined, nine increased, 23 showed no change, and species richness was stable. No rare or parasitic species showed decreasing trends, while the most...
Tipo: Peer-Reviewed Reports
Palavras-chave: ENSO; Euglossini; Abundance variability; Bees; Census techniques; Diversity; Pollinators; Trends; Tropical- temperate comparisons.
Ano: 2001

Evaluation of an ant sampling protocol (Hymenoptera: Formicidae) in three modified environments located inside an austral Atlantic Forest area of Brazil
Provedor de dados: 67
Autores: Lutinski,Junir Antonio; Lutinski,Cladis Juliana; Iop,Samanta; Mello Garcia,Flávio Roberto.
This study evaluated the efficiency as a tool for ant survey of a sampling protocol composed of six methods, and examined the role of environmental features on the efficiency of methods complementarity . We applied them in three environments (pine, eucalyptus and native forest) in the National Forest of Chapecó and the effect of the characteristics of these environments on methods complementarity. The sampling methods were pitfall traps, two types of bait (sardines and glucose), sweep net, entomological umbrella and Malaise trap. The protocol efficiency of the protocol in the ant inventory was evaluated based on rarefaction curves, richness estimators and records of occurrence of ants. The protocol captured the greatest richness on native forest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bait; Composition; Conservation planning; Diversity; Richness.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2013000100005

Occurrence of the rust resistance gene Lr37 from Aegilops ventricosa in Argentine cultivars of wheat
Provedor de dados: 69
Autores: Bulos,Mariano; Echarte,Mariel; Sala,Carlos.
Leaf rust of wheat (Triticum aestivum L.) caused by the fungus Puccinia triticina (formerly P. recondita f. sp. tritici), is one of the most important foliar diseases of this crop. Lr37 rust resistance gene, which confers resistance in wheat against leaf rust, was introgressed into cultivated wheat from Aegilops ventricosa Tausch. Rust races with virulence to Lr37 have been identified in different countries, but it still provides resistance to a wide range of races and is useful in combination with other resistance genes. There are no reports about the presence, frequency and origin of Lr37 in Argentinean wheat cultivars. In this work, we analyzed 88 registered Argentinean wheat cultivars developed by different breeding companies and institutions during...
Tipo: Journal article
Palavras-chave: Diversity; Marker assisted selection; Puccinia triticina; Triticum aestivum; Translocation.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000500014

Patterns of composition, richness and phylogenetic diversity of woody plant communities of Quillaja saponaria Molina (Quillajaceae) in the Chilean sclerophyllous forest
Provedor de dados: 73
Autores: Letelier,Luis; Valderrama,Aly; Stoll,Alexandra; García-Gonzáles,Rolando; González-Rodríguez,Antonio.
ABSTRACT Sclerophyllous forest is among the most representative types of woody plant communities in central Chile where Quillaja saponaria is considered to be one of the most important species. In this study, we analysed the main factors that explain the geographical patterns of variation in composition, richness and phylogenetic diversity of woody plant communities in the Chilean sclerophyllous forest where Quillaja saponaria is present. Vegetation surveys were performed for trees and shrubs in thirty-nine sites from 30° to 38° of latitude South in the Mediterranean biome of Chile. Composition, richness, alfa diversity and phylogenetic diversity metrics of the communities were calculated and associated with spatial (latitude, longitude and altitude),...
Tipo: Journal article
Palavras-chave: Diversity; Forest fragmentation; Mediterranean flora; Phylogenetic diversity; Vegetation matrix.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432017000100057

Evolutionary history of  Phakopsora pachyrhizi  (the Asian soybean rust) in Brazil based on nucleotide sequences of the internal transcribed spacer region of the nuclear ribosomal DNA
Provedor de dados: 74
Autores: Freire,Maíra C. M.; Oliveira,Luiz O. de; Almeida,Álvaro M. R. de; Schuster,Ivan; Moreira,Maurilio A.; Liebenberg,Merion M.; Mienie,Charlotte M. S.
Phakopsora pachyrhizi  has dispersed globally and brought severe economic losses to soybean growers. The fungus has been established in Brazil since 2002 and is found nationwide. To gather information on the temporal and spatial patterns of genetic variation in  P. pachyrhizi , we sequenced the nuclear internal transcribed spacer regions (ITS1 and ITS2). Total genomic DNA was extracted using either lyophilized urediniospores or lesions removed from infected leaves sampled from 26 soybean fields in Brazil and one field in South Africa. Cloning prior to sequencing was necessary because direct sequencing of PCR amplicons gave partially unreadable electrophoretograms with peak displacements suggestive of multiple sequences with length polymorphism. Sequences...
Palavras-chave: Phakopsora pachyrhizi; Diversity; Internal transcribed spacer; Asian soybean rust; Phylogeography.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500020

Microbial quality of soil from the Pampa biome in response to different grazing pressures
Provedor de dados: 74
Autores: Vargas,Rafael S.; Bataiolli,Renata; da Costa,Pedro B.; Lisboa,Bruno; Passaglia,Luciane Maria P.; Beneduzi,Anelise; Vargas,Luciano K.
The aim of this study was to evaluate the impact of different grazing pressures on the activity and diversity of soil bacteria. We performed a long-term experiment in Eldorado do Sul, southern Brazil, that assessed three levels of grazing pressure: high pressure (HP), with 4% herbage allowance (HA), moderate pressure (MP), with 12% HA, and low pressure (LP), with 16% HA. Two reference areas were also assessed, one of never-grazed native vegetation (NG) and another of regenerated vegetation after two years of grazing (RG). Soil samples were evaluated for microbial biomass and enzymatic (β-glucosidase, arylsulfatase and urease) activities. The structure of the bacterial community and the population of diazotrophic bacteria were evaluated by RFLP of the 16S...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial diversity; Diazotrophic bacteria; Diversity; Grasslands; Soil microbial communities.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000200205

Molecular characterization of Indian pathotypes of Puccinia striiformis f. sp. tritici and multigene phylogenetic analysis to establish inter- and intraspecific relationships
Provedor de dados: 74
Autores: Aggarwal,Rashmi; Kulshreshtha,Deepika; Sharma,Sapna; Singh,Vaibhav K.; Manjunatha,Channappa; Bhardwaj,Subhash C.; Saharan,Mahender S.
Abstract Stripe rust caused by Puccinia striiformis f. sp. tritici (Pst) is one of the most devastating diseases of wheat (Triticum spp.) worldwide. Indian isolates were characterised based on their phenotypic reaction on differential hosts carrying different Yr genes. Based on virulence/avirulence structure, isolates were characterised into ten different pathotypes viz. 70S0-2, 67S64, 70S4, 66S0, 70S64, 66S64-1, 38S102, 47S102, 46S119, and 78S84. These Indian pathotypes of P. striiformis f. sp. tritici and 38 pathotypes of other rust species (P. graminis tritici and P. triticina) were used in this study to analyze their molecular phylogenetic relationship. The nucleotides of rDNA-ITS, partial β-tubulin and ketopantoate reductase genes of all the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wheat; Stripe rust; Virulence; Diversity; Phylogeny.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000500834

First record of Wolbachia in South American terrestrial isopods: prevalence and diversity in two species of Balloniscus (Crustacea, Oniscidea)
Provedor de dados: 74
Autores: Almerão,Mauricio Pereira; Fagundes,Nelson Jurandi Rosa; Araújo,Paula Beatriz de; Verne,Sébastien; Grandjean,Frédéric; Bouchon,Didier; Araújo,Aldo Mellender.
Wolbachia are endosymbiotic bacteria that commonly infect arthropods, inducing certain phenotypes in their hosts. So far, no endemic South American species of terrestrial isopods have been investigated for Wolbachia infection. In this work, populations from two species of Balloniscus (B. sellowii and B. glaber) were studied through a diagnostic PCR assay. Fifteen new Wolbachia 16S rDNA sequences were detected. Wolbachia found in both species were generally specific to one population, and five populations hosted two different Wolbachia 16S rDNA sequences. Prevalence was higher in B. glaber than in B. sellowii, but uninfected populations could be found in both species. Wolbachia strains from B. sellowii had a higher genetic variation than those isolated from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wolbachia; Prevalence; Diversity; South America; Oniscidea.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600013

Diversity and three-dimensional structures of the alpha Mcr of the methanogenic Archaea from the anoxic region of Tucuruí Lake, in Eastern Brazilian Amazonia
Provedor de dados: 74
Autores: Santana,Priscila Bessa; Ghilardi Junior,Rubens; Alves,Claudio Nahum; Silva,Jeronimo Lameira; McCulloch,John Anthony; Schneider,Maria Paula Cruz; Silva,Artur da Costa da.
Methanogenic archaeans are organisms of considerable ecological and biotechnological interest that produce methane through a restricted metabolic pathway, which culminates in the reaction catalyzed by the Methyl-coenzyme M reductase (Mcr) enzyme, and results in the release of methane. Using a metagenomic approach, the gene of the a subunit of mcr (mcrα) was isolated from sediment sample from an anoxic zone, rich in decomposing organic material, obtained from the Tucuruí hydroelectric dam reservoir in eastern Brazilian Amazonia. The partial nucleotide sequences obtained were 83 to 95% similar to those available in databases, indicating a low diversity of archaeans in the reservoir. Two orders were identified -the Methanomicrobiales, and a unique Operational...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian; Archaea; Diversity; Methyl-coenzyme M reductase; Mcrα; Homology modeling.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100018

Studies on diversity and evolution of Iridaceae species in southern Brazil
Provedor de dados: 74
Autores: Souza-Chies,Tatiana T.; Santos,Eliane Kaltchuk dos; Eggers,Lilian; Flores,Alice Mainieri; Alves,Eudes M. Stiehl; Fachinetto,Juliana; Lustosa,Juliana; Corrêa,Lauís Brisolara; Tacuatiá,Luana Olinda; Piccoli,Paula; Miz,Rogéria Beatriz.
Plants of the family Iridaceae are well represented in the grassland vegetation of southern Brazil, occurring in the Pampa and Atlantic Forest biomes. Nevertheless, little is known about the taxonomy and evolution of Iridaceae species in southern Brazil. The main goal of this review is to compile published information about South American Iridaceae, and to discuss the evolution and genetic diversity of the family presenting our own research data in the light of the published literature. The main focus is on the genera Calydorea, Cypella, Herbertia, and Sisyrinchium. Aspects of reproductive system and of pollinator attraction are also discussed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytotaxonomy; Molecular phylogenetics; Iridoideae; Population genetics; Diversity.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600018

Genetic divergence in basil cultivars and hybrids
Provedor de dados: 75
Autores: Alves,Rodrigo P; Silva,Ana Veruska C; Almeida-Pereira,Camila S; Costa,Tatiana S; Alvares-Carvalho,Sheila V; Arrigoni-Blank,Maria de Fatima; Blank,Arie F.
ABSTRACT Basil is an aromatic herb that stands out for its economic importance. It is consumed in natura and used to obtain essential oil. The cultivation of this species in several regions of the world has allowed variations by natural crosses and euploidy, leading to the wide genetic variability found nowadays. Considering the importance of this species, we aimed to analyze the genetic diversity of 27 basil genotypes using ISSR molecular markers. Fourteen primers were employed for DNA amplification, resulting in 86% polymorphism. Based on the Jaccard’s dissimilarity index, the highest index (0.80) was observed between the individuals BAS001 and BAS012, while the lowest index (0.18) was detected between the genotypes BAS014 and BAS015. The genetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ocimum basilicum; Diversity; Molecular characterization; Dominant marker.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000200180

Morpho-agronomic characterization of sweet potato germplasm
Provedor de dados: 75
Autores: Alves,Rodrigo P; Blank,Arie F; Oliveira,Alisson Marcel S; Santana,Aléa Dayane D; Pinto,Vanderson S; Andrade,Thiago M.
ABSTRACT Sweet potato (Ipomoea batatas) spreads mainly by vegetative propagation, and therefore this vegetable may have duplicate accessions in germplasm banks. The authors aimed to characterize morpho-agronomically the sweet potato germplasm from the Active Germplasm Bank (AGB) of Universidade Federal de Sergipe (UFS).The experiment was carried out at the Research Farm “Campus Rural da UFS”. The experimental design was a randomized block design, testing 73 sweet potato accessions with two replicates and four plants per plot. Morpho-agronomic traits of aboveground part and roots were evaluated. We observed that the leaf lobe type, the number of lobes per leaf, shape of central lobe, and general leaf shape were traits which provided the most variability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ipomoea batatas; Resistance; Diversity; Descriptors; Productivity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000400534

Entomofauna and potential pollinators of strawberry crop under semi-hydroponic conditions
Provedor de dados: 75
Autores: Piovesan,Bruna; Padilha,Aline C; Botton,Marcos; Zotti,Moisés João.
ABSTRACT Strawberry cultivation under semi-hydroponic conditions has increased in the Southern region of Brazil since it facilitates management, besides avoiding weather adversities, pests and diseases. However, protected environment can hamper the access of pollinator insects, essential for crop productivity. This work aimed to know the entomofauna associated with strawberry cultivar Albion cultivated under semi-hydroponic conditions and to identify potential species of native pollinating bees. Insects were captured at different times of the day (9:30 a.m., 12:30 p.m. and 3:30 p.m.) in three commercial crops located in Bento Gonçalves and Farroupilha, Rio Grande do Sul. In each study area, three days of sampling were carried out during January 2017. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragaria x ananassa; Pollination; Agriculture; Diversity; Native bees.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000300324

Diversity and Variability of the Cорероd Behaviour in Environmental Gradients: an Overview
Provedor de dados: 13
Autores: Seregin, S. A.; Piontkovski, S. A.
The overview is based on results of long-term experimental studies оf the authors and literature data, and applies to copepod species from plankton of the Black Sea, the Mediterranean Sea and the Atlantic Ocean. The work has incorporated the analysis of diversity and variability of the locomotory acts under the impact of abiotic factors: light, temperature, salinity, and the turbulent diffusion. Variability of locomotory activity depending on intensity, orientation (for the scalar factors), from a various combination of the environmental factors is shown. One of the mechanisms of a preferred conditions selection and phenomenon of a polymodality of copepod distribution in gradient conditions of environment is analyzed on an example of Acartia clausi...
Tipo: Journal Contribution
Palavras-chave: Diversity; Copepod behaviour; Light; Temperature; Salinity; Turbulent diffusion; Pазнообразие; Поведение копепод; Свет; Температура; Соленость; Турбулентная диффузия Light Temperature Salinity Turbulent diffusion Light Temperature Salinity http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7657 http://aims.fao.org/aos/agrovoc/c_6751.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/148

Population fluctuations of calliphorid species (Diptera, Calliphoridae) in the Biological Reserve of Tinguá, state of Rio de Janeiro, Brazil
Provedor de dados: 76
Autores: Mello,Renata da Silva; Queiroz,Margareth M. C.; Aguiar-Coelho,Valéria M.
The purpose of this work was to determine the diversity and population fluctuations of calliphorid flies in the Biological Reserve of Tinguá (ReBio-Tinguá), Nova Iguaçu, state of Rio de Janeiro, Brazil and to correlate their occurrence with the environmental variables of temperature, rainfall and relative air humidity. Specimens of Diptera were collected monthly between June 2002 and January 2005 using four traps placed at four points along a trail and exposed for 48 hours. The traps were baited with sardines and the trapped insects were stored in 70% alcohol. It was collected 8,528 calliphorids, thirteen species were identified among the blowflies including Laneela nigripes Guimarães 1977, Chrysomya megacephala (Fabricius, 1794), C. albiceps (Wiedemann,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seasonal abundance; Diversity; Atlantic Forest; Blowflies.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000400019

Esponjas (Demospongiae, Halichondrida) da costa do Maranhão, Brasil
Provedor de dados: 76
Autores: Mothes,Beatriz; Campos,Maurício Alves de; Lerner,Cléa Beatriz; Ferreira-Correia,Maria Marlúcia.
Three species of Halichondrida, Dragmacidon reticulatus (Ridley &amp;amp; Dendy, 1886) (Axinellidae), Myrmekioderma rea (Laubenfels, 1934) (Desmoxyidae) and Topsentia ophiraphidites (Laubenfels, 1934) (Halichondriidae), collected from 30 to 184 m depths, were recorded for the first time from State of Maranhão, north-northeast coast of Brazilian shelf.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Porifera; Diversity; Distribution; West Atlantic.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000200006

Bats (Mammalia, Chiroptera) of an urban park in the metropolitan area of Rio de Janeiro, southeastern Brazil
Provedor de dados: 76
Autores: Esbérard,Carlos E.L.; Luz,Júlia L.; Costa,Luciana M.; Bergallo,Helena G.
Some bat species are able to adapt to urban areas, where they find food and roosts. Despite the high number of parks in Brazilian cities, they did not yet raise the interest of most zoologists, except for some surveys of birds and butterflies. The objectives of the present study were: (i) to inventory the bat species of Quinta da Boa Vista (QBV), a large (25 ha) urban park centrally located in densely populated Rio de Janeiro, which is Brazil's second largest metropolis; (ii) to compare the species richness observed in roosts with the richness recorded through mist netting in flight routes and near fruiting fig trees; and (iii) to analyze recaptures of bats marked in this park and recaptured in other sites and vice-versa. Sampling totaled 104 sampling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Long-term; Samples; Urban area.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000100008

The influence of temperature and humidity on abundance and richness of Calliphoridae (Diptera)
Provedor de dados: 76
Autores: Azevedo,Rodrigo R.; Krüger,Rodrigo F.
The blowfly species are important components in necrophagous communities of the Neotropics. Besides being involved in the degradation of animal organic matter, they may serve as vectors for pathogens and parasites, and also cause primary and secondary myiasis. The occurrence pattern of these species is well defined, yet it is still not very clear which of these environmental factors determine the structure of the assemblies. This paper was developed to evaluate the influence of mean temperature and relative humidity variation in the abundance and richness of blowflies in the Brazilian southernmost state, Rio Grande do Sul, where temperature variation is well marked throughout the year. To evaluate this objective, WOT (Wind Oriented Trap) were installed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blow flies; Diversity; GLM; Models.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000200010

A Bayesian analysis of the parasitic ecology in Jenynsia multidentata(Pisces: Anablepidae)
Provedor de dados: 76
Autores: Montes,Martin M.; Martorelli,Sergio R.
ABSTRACT Jenynsia multidentata Jenyns, 1842 (one-sided livebearers) are euryhaline viviparous fish of small size, used in the laboratory experiment, important as resource for biological control of mosquito’s larva and a key species to recover eutrophic lakes. Works have been published dealing with parasite biodiversity of this host, but little has been studied about the parasite community ecology. From early 2009 to ends of 2010 specimens of J. multidentata were collected from two places, the Salado Relief Channel (S.R.C.) on Samborombón Bay and the Sauce Chico River near to the city of Bahia Blanca (B.B.). All fish were sexed, measured and grouped into sizes/age classes. The fishes from both sites harbored 16 parasitic species: nine digenean, one...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Samborombon Bay; Bahia Blanca; Salado River Relief Channel; Low Sauce River.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100222

Bird community in an Araucaria forest fragment in relation to changes in the surrounding landscape in Southern Brazil
Provedor de dados: 76
Autores: Scherer-Neto,Pedro; Toledo,Maria Cecília B.
The dynamics of the bird community in a small forest fragment was evaluated along seven years in relation to changes in the surrounding landscape. The study area is an Araucaria forest fragment in Southern Brazil (state of Paraná). The sampling period covered the years 1988 through 1994 and the mark-release-recapture method was utilized. The landscape analysis was based on Landsat TM images, and changes in exotic tree plantations, native forest, open areas (agriculture, pasture, bare soil, and abandoned field), and "capoeira"(native vegetation &lt; 2 m) were quantified. The relationship between landscape changes and changes in abundance diversity of forest birds, open-area birds, forest-edge birds, and bamboo specialists was evaluated. Richness estimates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Richness; Abundance; Diversity; Long-term assessment; State of Paraná.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000400007

Taxonomic and numeric structure of Chironomidae (Diptera) in different habitats of a Neotropical floodplain
Provedor de dados: 76
Autores: Butakka,Cristina Márcia de Menezes; Gomes,Luiz Carlos; Takeda,Alice Michiyo.
We characterized the local benthic Chironomidae by analyzing the numerical density, biomass, diversity index of Shannon-Wiener and dominance of larvae in the main channel of the Ivinhema River, in a secondary channel, in five lakes connected to the main channel and in five lakes without connection. Of the 68 taxa identified, Aedokritus sp., Tanytarsus sp., Chironomus strenzkei Fittkau, 1968 and Procladius sp.1 were found in all sampling sites and were considered morphospecies with greater of greatest ecological plasticity. Chironomus strenzkei Fittkau, 1968, contributed with the greatest biomass in the central region of lakes without connection, whereas Aedokritus sp. dominated in the littoral of lakes. The greater values of diversity indices in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chironomidae larvae; Biomass; Diversity; Dominance; Paraná River.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000300007

Composition and diversity of Ephemeroptera (Insecta) nymph communities in the middle section of the Jacuí River and some tributaries, southern Brazil
Provedor de dados: 76
Autores: Siegloch,Ana Emilia; Froehlich,Claudio Gilberto; Kotzian,Carla B.
The taxonomic composition and diversity of assemblages of Ephemeroptera nymphs of four lotic environments in the central region of State of Rio Grande do Sul, a subtropical area in southern Brazil, were evaluated. Samplings were done monthly, with a Surber sampler, from June 2001 to May 2002, in the Jacuí River and three of its tributaries. The total number of nymphs collected in the four sampling sites was 11,007 in five families and 19 genera, of these, 11 are new records for the State. The highest diversity occurred in Point 4 (H'=2.41) and the lowest in Point 2 (H'=1.69). Point 4 had the highest environmental stability, conservation of the riparian vegetation and the lowest anthropic impact, while Point 2 presented a large environmental simplification...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ephemeroptera; Nymphs; Taxonomic composition; Diversity; Southern Brazil.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000400002

Check-list of the Tachinidae (Diptera) of Mato Grosso do Sul, Brazil
Provedor de dados: 76
Autores: Nihei,Silvio Shigueo; Lopes,André César; Dios,Rodrigo de Vilhena Perez; Gudin,Filipe Macedo.
Abstract In the state of Mato Grosso do Sul, which is composed by four macroregions, Cerrado, Chaco, Atlantic Forest and Pantanal, there are 39 species and 24 genera of Tachinidae based on the literature. The subfamily Tachininae, with 15 species occurring in the State, has the highest representativeness, while the other subfamilies, Exoristinae, Phasiinae, and Dexiinae, with respectively 14, 7 and 3 species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Diversity; Neotropical region; Biota-MS Program.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000200241

Terrestrial isopod diversity in the subtropical neotropics: Itapuã State Park, southern Brazil
Provedor de dados: 76
Autores: Almerão,Maurício P.; Mendonça Jr.,Milton de S.; Quadros,Aline F.; Pedó,Ezequiel; Silva,Luiz G. R.; Araujo,Paula Beatriz.
We analysed species abundance and composition during one year of sampling at Itapuã State Park, a conservation unit in the State of Rio Grande do Sul, southern Brazil. Samples were collected monthly from May 2003 to April 2004 along a 4 km forest trail divided in three transects along the slopes of a small hill. Terrestrial isopods were hand searched by three people for 40 minutes at two sampling sites along each transect, summing 240 minutes of sampling effort per transect per month. Six species distributed in six families were found. The collector curve stabilised when half the samples were taken, demonstrating sampling sufficiency: analytical estimates did not predict more species to be found in the trail. Atlantoscia floridana (van Name, 1940) was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Terrestrial isopods; Oniscidea; Crustacea; Soil fauna.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000400012

Variation of the ichthyofauna along the Goioerê River: an important tributary of the Piquiri-Paraná basin
Provedor de dados: 76
Autores: Tos,Claudenice Dei; Gomes,Luiz C.; Rodrigues,Maria A.
The construction of reservoirs is considered an important source of impacts on the fish fauna, severely altering the structure of the assemblage. This paper aimed to describe the structure of the fish assemblage of the Goioerê River, determining its longitudinal distribution and patterns of species dominance. The evaluation of its longitudinal variation in the diversity and abundance of the fish assemblage was conducted in July and October 2004 and January and May 2005. The collections were carried out near the headwaters (Gurucaia), middle stretch (Olaria), just above the falls (Paiquerê) and downstream (Foz). Forty-four species were captured. The Gurucaia fish assemblages differed significantly from Olaria, Paiquerê and Foz. The Olaria assemblages...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Fish community; Richness; Evenness; Goioerê River basin.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000100014

Structure of the ichthyofauna of adventitious streams in the South Pantanal
Provedor de dados: 76
Autores: Uieda,Virginia S.; Fujihara,César Y.
ABSTRACT: The ichthyofauna of the Taquari River, one of the main tributaries of the South Pantanal, has been studied since the 1970s; however, there is a gap on the studies about the ichthyofauna present on the small adventitious streams of this highly dendritic system. These streams are small tributaries that flow directly into large rivers (mainstem), at least three orders greater in magnitude. The aim of this study was to analyze the structure of the ichthyofauna of five adventitious streams of the Upper Taquari River, South Pantanal, evaluating its temporal variation (dry and wet season) and the relation to the habitat characteristics and the conservation of the streams. Thirty-seven species were collected, from which 14 are exclusive to the Paraguay...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lotic habitat; Diversity; Fish; Paraguay River basin; Upper Taquari River.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100219

Fish assemblages in two sandy beaches in lower Purus river, Amazonas, Brazil
Provedor de dados: 76
Autores: Duarte,Cleber; Py-Daniel,Lúcia H. Rapp; Deus,Cláudia Pereira de.
Fish assemblages from two sandy beaches in the lower Purus river (Amazonas, Brazil) were compared. Four sampling groups were represented by: day and night samples in sandy beach inside the Reserva Biológica de Abufari (biological reserve) and day and night samples in the Reserva de Desenvolvimento Sustentável Piagaçu-Purus (sustainable development reserve). Samples were collected during low water levels (November) in 2007. The fish were sampled by means of seines with mesh size of 5 mm between opposing knots, 11 m long and 6 m wide. A total of 112 fish species belonging to nine orders and 27 families was captured. The vast majority of the dominant forms consisted of small fishes (&lt; 100 mm SL) or juveniles. Samples collected in Abufari at night presented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon fish; Nictemeral; Protected areas; Diversity; Abundance.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000400006

Composition and structure of a Miridae (Hemiptera, Heteroptera) assemblage from a relict of deciduous rainforest in southern Brazil
Provedor de dados: 76
Autores: Barcellos,Aline; Schmidt,Letícia S; Ferreira,Paulo Sergio F.
A two-year study was carried out to evaluate the composition, abundance and species richness of Miridae from Parque Estadual do Turvo, municipality of Derrubadas, state of Rio Grande do Sul, Brazil. Samplings were made in the springs of 2003 and 2004 (October), and autumns of 2004 and 2005 (May), using a beating tray method, along two trails of the park. Sampling effort (hours x collectors) in the quantitative collections totaled 153 hours. Two-hundred mirid specimens of 50 species were collected. The most abundant mirid was Prepops setosipes (Reuter, 1910), representing 23% of the collected individuals, followed by Collaria capixaba Carvalho &amp;amp; Fontes, 1981 (10.5%) and Tropidosteptes cribratus (Stål, 1860) (7%), the latter recorded in all sampling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Mirids; Species richness; Subtropic.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000100016

Mudanças temporais na abundância e diversidade da fauna de peixes do infralitoral raso de uma praia, sul do Brasil
Provedor de dados: 76
Autores: Godefroid,Rodrigo S.; Spach,Henry L.; Santos,Cesar; MacLaren,Guilherme; Schwarz Jr.,Roberto.
Abundance and diversity of the fish fauna in the shallow infralittoral region of Atami Beach, Paraná, Brazil, were studied through monthly collections between July 1998 and June 1999. A total of 7553 fishes from 70 species and 26 families, mainly juvenile forms, was captured in the area. The mean captures in number of species, number of fish and biomass were larger from the end of spring to the middle of autumn; seasonal tendency in richness, diversity (number) and equitability indices were not observed. The largest mean dissimilarity in the composition of the ichthyofauna occurred between June and May in comparison to the period between July and October. The species that contributed most to this dissimilarity were Selene setapinnis (Mitchill, 1815),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Demersal fish; Temporal variation; Abundance; Diversity; Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000100017

Short-term spider community monitoring after cattle removal in grazed grassland
Provedor de dados: 76
Autores: Silva,Guilherme O. da; Ott,Ricardo.
ABSTRACT. At the Pampa Biome, grazing, like others disturbances, affects fauna and flora, creating heterogeneity in the environment. Little is known about how the diversity and richness of arthropods change during this impact. To improve the knowledge of how spider diversity is affected by grazing, experiments were realized at Pampa. The hypothesis is that abundance of spider will be different when comparing grazed and ungrazed areas. A paired block, with two areas of one hectare each, was established in three areas in the Environmental Protection Area of Ibirapuitã (APA Ibirapuitã), state of Rio Grande do Sul, Brazil. One of these hectares was closed with fences, excluding the catle grazing, in August of 2012. Samplings were realized in November of 2011,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical; Pampa; Diversity; Araneae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100233

Diversity and stability of fishes (Teleostei) in a temporary river of the Brazilian semiarid region
Provedor de dados: 76
Autores: Medeiros,Elvio S.F.; Maltchik,Leonardo.
The effects of hydrological disturbances by flooding and drought on the diversity and stability in a temporary river fish community in the Brazilian semiarid region were analyzed over the 1996 hydrological cycle. Twelve collections of fishes were made during the wet and dry phases, and 789 individuals of 16 species were collected. Diversity was measured using Simpson's Index (S) and community stability was analyzed by the variation in abundance using Kendall's W concordance test. Fish diversity in the Taperoá river was subjected to hydrological disturbances by flooding and drought. During the wet phase the diversity was higher (S = 0.855) than during the dry phase (S = 0.771). The community was considered stable during the whole annual hydrological cycle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Teleostei; Intermittent stream; Disturbance; Diversity; Stability.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000100016

Diversite et trajectoires d'evolution des exploitations.
Provedor de dados: 14
Autores: CARON, P.
Valorisation de la rnain-d'ceuvre familiale et autonomie de gestion des moyens de production sont les deux principales caractéristiques de l'agriculture familiale, qui font de I'exploitation agricole familiale un niveau d'organisation majeur. C'est à ce niveau que les producteurs définissent, pour eux et pour les leurs, des objectifs en fonction de Ia perception qu'ils ont de leur environnement et de leur situation dans cet environnement. C'est aussi à ce niveau qu'ils mobilisent, organisent et gerent les moyens de production, et qu'ils choisissent d'affecter les fruits de leur travail à l'investissement, à la consommation ou à I'épargne. Le petit producteur est depuis les années 80 l'objet de multiples attentions de Ia part des institutions publiques de...
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Diversidade; Trajetoria; Evolucao; Organizacao; Tipificacao; Brasil; Nordeste; Bahia; Massaroca; Pintadas; Familiar farms; Diversity; Trajectory; Development; Organization; Northeast; Agricultura Familiar; Classification; Evolution; Brazil.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134408

Fitossociologia de uma mata de galeria na Fazenda Sucupira do Cenargen, Brasilia/DF.
Provedor de dados: 14
Autores: SAMPAIO, A. B.; NUNES, R. V.; WALTER, B. M. T.
bitstream/item/177038/1/ID-2546.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Diversidade; Diversity; Gallery forest; Mata Ciliar; Vegetação; Phytosociology.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/182834

Structure et dynamique temporelle des communautés hydrothermales inféodées à la dorsale Juan de Fuca : utilisation d'une approche observatoire fond de mer
Provedor de dados: 5
Autores: Lelièvre, Yann.
Hydrothermal vents are distributed along mid-ocean ridges and back-arc basins. These ecosystems harbour a specialized fauna supported by a local chemosynthetic microbial production, made possible through the oxidation of reduced elements present in the hydrothermal fluid. While the relationships between faunal assemblages and habitats have been relatively well described around the globe, our knowledge on the temporal dynamics of these environments is still limited, particularly at time scale relevant to organisms (from few minutes to several years). Based on hydrothermal vent communities occurring on the Juan de Fuca Ridge, located in the northeast Pacific Ocean, this thesis aims at understanding the functioning and temporal dynamics of macrofaunal...
Tipo: Text
Palavras-chave: Écologie hydrothermale; Observatoire fond de mer; Diversité; Réseaux trophiques; Dynamique temporelle; Imagerie; Temporal dynamics; Imagery; Food webs; Hydrothermal ecology; Seafloor observatory; Diversity.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00497/60907/64256.pdf

The vesicomyid bivalve habitat at cold seeps supports heterogeneous and dynamic macrofaunal assemblages
Provedor de dados: 5
Autores: Guillon, Erwan; Menot, Lenaick; Decker, Carole; Krylova, Elena; Olu, Karine.
The high biodiversity found at cold seeps, despite elevated concentrations of methane and hydrogen sulfide, is attributed to multiple sources of habitat heterogeneity. In addition to geological and geochemical processes, biogenic habitats formed by large symbiont-bearing taxa, such as bivalves and siboglinid tubeworms, or by microbial mats drive the biodiversity of small-sized fauna. However, because these habitat-forming species also depend on geochemical gradients, the respective influence of abiotic and biotic factors in structuring associated macrofaunal communities is often unresolved. The giant pockmark Regab located at 3200 m depth on the Congo margin is characterized by different fluid-flow regimes, providing a mosaic of the most common biogenic...
Tipo: Text
Palavras-chave: Cold-seep; Macrofauna; Diversity; Dynamics; Vesicomyid clams; Gulf of Guinea.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00361/47210/47165.pdf

Living (stained) benthic foraminifera from the Mozambique Channel (eastern Africa): Exploring ecology of deep-sea unicellular meiofauna
Provedor de dados: 5
Autores: Fontanier, Christophe; Garnier, Eline; Brandily, Christophe; Dennielou, Bernard; Bichon, S.; Gayet, Nicolas; Eugene, Thibaut; Rovere, Mickael; Gremare, A.; Deflandre, B.
Live (Rose-Bengal stained) deep-sea foraminiferal faunas have been studied at four stations between 530–3200-m depth in the Mozambique Channel (eastern Africa) to understand how complex environmental conditions (e.g., organic matter, oxygenation) control their ecological structure (i.e., diversity, density, and microhabitats). Two upper-slope stations, located at 530- and 780-m depth off Madagascar, are bathed by well-oxygenated bottom waters. They are characterized by fine sediments enriched in highly degraded organic matter (low amino-acid bio-availability and reduced chlorophyllic freshness). Mineralization of organic compounds results in relatively moderate oxygen penetration depth (i.e., 15 and 30 mm) in sediment. Interestingly, foraminiferal species...
Tipo: Text
Palavras-chave: Mozambique Channel; Foraminifera; Diversity; Microhabitat; Organic matter.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00344/45505/45057.pdf

Spatial heterogeneity of macrofaunal communities in and near a giant pockmark area in the deep Gulf of Guinea
Provedor de dados: 5
Autores: Menot, Lenaick; Galeron, Joelle; Olu, Karine; Caprais, Jean-claude; Crassous, Philippe; Khripounoff, Alexis; Sibuet, Myriam.
The structure and familial-level composition of macrofaunal communities were examined within and at distance from the giant pockmark Regab in the Southern Gulf of Guinea, at 3200 m depth. The two main questions addressed in this study were (i) does habitat partitioning by large symbiont-bearing taxa. influence macrofaunal assemblages and their environment? and (ii) to what extent does the chemosynthesis-based ecosystem influence the structure and the composition of nearby macrobenthic communities? Along two radials, at sites from 250 to 1000 m away from the active centre of the cold seep, the abundance and composition of the macrofauna were typical of a deep-sea community at that depth. Except for a few cores sampled in or near dead vesicomyid fields at...
Tipo: Text
Palavras-chave: Cold seep; Diversity; Gulf of Guinea; Habitat heterogeneity; Macrofauna; Open slope; Siboglinid tubeworms; Vesicomyid clams.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00002/11282/8099.pdf

Variation in synonymous codon use and DNA polymorphism within the Drosophila genome
Provedor de dados: 5
Autores: Bierne, Nicolas; Eyre Walker, A.
A strong negative correlation between the rate of amino-acid substitution and codon usage bias in Drosophila has been attributed to interference between positive selection at nonsynonymous sites and weak selection on codon usage. To further explore this possibility we have investigated polymorphism and divergence at three kinds of sites: synonymous, nonsynonymous and intronic in relation to codon bias in D. melanogaster and D. simulans. We confirmed that protein evolution is one of the main explicative parameters for interlocus codon bias variation (r(2) similar to 40%). However, intron or synonymous diversities, which could have been expected to be good indicators of local interference [here defined as the additional increase of drift due to selection on...
Tipo: Text
Palavras-chave: Substitution rate; Selective constraints; Linkage; Hill Robertson interference; GC content; Drosophila; Diversity; Codon usage.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-4221.pdf

Effets de l'exploitation par la pêche sur la dynamique de diversité des peuplements de poissons démersaux : analyse comparée du rôle des interactions entre espèces dans le golfe de Gascogne et dans le golfe du Lion
Provedor de dados: 5
Autores: Blanchard, Fabian.
This work deals with the fishing effects on the diversity dynamics of demersal fish communities, focusing on the biotic interactions. Multispecies indices are used in order to characterize the demersal fish community dynamics of the Bay of Biscay and of the Gulf of Lions. These are the diversity indices, the temporal variability of the total biomass and of the slope of the number size spectra and the slope of the species-area curves (spatial segregation). The yearly bottom trawl surveys EVHOE, CHALIST and MEDITS, carried out in these two areas since 1983 by IFREMER for the stocks assessment provide the data. The differences between areas are related to a fishing index (mean value of the annual landings of demersal fish per surface area). Other areas are...
Tipo: Text
Palavras-chave: Gulf of Lions; Bay of Biscay; Medits; Chalist; Evhoe; Fishing effect; Diversity; Demersal fish; Golfe du Lion; Golge de Gascogne; Medits; Chalist; Evhoe; Descripteurs; Diversité des peuplements; Poissons démersaux.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/these-6670.pdf

Les virus de l'estuaire de la Charente el du bassin de Marennes-Oleron. Dynamiques spatio-temporelles et  interactions avec les communautés bactériennes
Provedor de dados: 5
Autores: Auguet, Jean-christophe.
This study is divided in two parts; one aim is to evaluate the in situ spalio-temporal dynamics of viral communities  in the Charante estuary in order to define the appropriate seasons to conduct in vitro viral enrichment experiments. These experiments, that constitute the second part of this study, were performed to assess the impact of freshwater viruses carried by the Charante River on the dynamics and composition of coastal bacterial communities. With abundance ranging from 1.4 x 107 to 208 x I07 VLPml-1. viruses are the most abundant component among plankton microorganisms in surface waters of the Charente estuary. Thre temporal dynamics of this component reflects the indirect influence of temperature through the control of bacterial abundance,...
Tipo: Text
Palavras-chave: Richesse spécifique; Composition clonale; Enrichissement vital; Infection lyrique; Structure des communautés; MET; PPGE; Dynamique temporelle; Gradient de salinité; Estuaire; Bactérioplancton; Virioplancton; Species richness; Clonal composition; Viral enrichment; Lytic infection; Community structure; Diversity; TEM; PEGE; Temporal dynamic; Gradient; Salinity; Estuary; Bacterioplankton; Virioplankton.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/these-3071.pdf

Diversity of Vibrio spp. isolated at ambient environmental temperature in the Eastern English Channel as determined by pyrH sequencing
Provedor de dados: 5
Autores: Tall, Amadou; Hervio-heath, Dominique; Teillon, Anna; Boisset-helbert, C.; Delesmont, R.; Bodilis, J.; Touron-bodilis, A.
Aims To describe the diversity of the culturable mesophilic and potentially pathogenic vibrios isolated at 22 and 37 degrees C on TCBS medium, in September 2009 from seawater and surface sediments. Methods and Results q-PCR assays previously selected for the identification of bacterial strains isolated at 37 degrees C were used in combination with the partial sequencing of two housekeeping genes, pyrH and toxR, to identify 315 strains isolated at 22 degrees C. The great majority of the 37 degrees C strains was identified by q-PCR assays, (five of the six species) with the predominance of Vibrio alginolyticus (85 center dot 9%) and V.harveyi (10 center dot 7%). The human pathogens V.parahaemolyticus and V.cholerae were rarely detected (two strains each)....
Tipo: Text
Palavras-chave: Coastal environment; Culturable Vibrio spp; Diversity; PyrH and toxR genes partial sequencing.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00144/25502/24832.pdf

Multiscale patterns in the diversity and organization of benthic intertidal fauna among French Atlantic estuaries
Provedor de dados: 5
Autores: Blanchet, Hugues; Gouillieux, Benoit; Alizier, Sandrine; Amouroux, Jean-michel; Bachelet, Guy; Barille, Anne-laure; Dauvin, Jean-claude; De Montaudouin, Xavier; Derolez, Valerie; Desroy, Nicolas; Grall, Jacques; Gremare, Antoine; Hacquebart, Pascal; Jourde, Jerome; Labrune, Celine; Lavesque, Nicolas; Meirland, Alain; Nebout, Thiebaut; Olivier, Frederic; Pelaprat, Corine; Ruellet, Thierry; Sauriau, Pierre-guy; Thorin, Sebastien.
Based on a parallel sampling conducted during autumn 2008, a comparative study of the intertidal benthic macrofauna among 10 estuarine systems located along the Channel and Atlantic coasts of France was performed in order to assess the level of fauna similarity among these sites and to identify possible environmental factors involved in the observed pattern at both large (among sites) and smaller (benthic assemblages) scales. More precisely this study focused on unraveling the observed pattern of intertidal benthic fauna composition and diversity observed at among-sites scale by exploring both biotic and abiotic factors acting at the among- and within-site scales. Results showed limited level of similarity at the among-site level in terms of intertidal...
Tipo: Text
Palavras-chave: Estuaries; Macrozoobenthos; Diversity; Structuring Factors; WFD.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00179/29016/27444.pdf

Macroalgal diversity for sustainable biotechnological development in French tropical overseas territories
Provedor de dados: 5
Autores: Stiger-pouvreau, Valerie; Zubia, Mayalen.
This review focuses on the diversity of French tropical overseas macroalgae and their biotechnological applications. After listing the specific diversity, i.e. 641 species in French Antilles in the Atlantic Ocean, 560 species in the Indian Ocean, and 1015 species in the South Pacific Ocean, we present the potential of their metabolites and their main uses. Among the great diversity of metabolites, we focus on carbohydrates, proteins, lipids, pigments and secondary metabolites, in particular terpenes and phenolic compounds. The main applications of reef macroalgae are described in human and animal consumptions, phycocolloids extraction, production of active ingredients for health, cosmetics, agriculture, and bioremediation. For each application, we list...
Tipo: Text
Palavras-chave: Biotechnological applications; Coral reef; Diversity; French territories; Seaweeds.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00605/71684/70125.pdf

Similar patterns of patterns of community organization characterize distinct groups of different trophic levels in the plankton of the NW Mediterranean Sea
Provedor de dados: 5
Autores: Raybaud, V.; Tunin-ley, A.; Ritchie, M. E.; Dolan, J. R.
Planktonic populations were sampled over a 4 week period in the NW Mediterranean, at a site subject to little vertical advection during the Dynaproc 2 cruise in 2004. The characteristics of the phytoplankton, the tintinnid community and the zooplankton have recently been described in detail. Based on these studies, we compared the characteristics of 3 well-circumscribed assemblages of different trophic levels: Ceratium of the phytoplankton, herbivorous tintinnids of the microzooplankton, and large (&gt; 500 mu m) omnivorous and carnivorous copepods of the metazoan zooplankton. In all three groups, diversity as H' or species richness, was less variable than concentration of organisms. Plotting time against species accumulation, the curves approached plateau...
Tipo: Text
Palavras-chave: Species abundance distributions; Diversity; Zooplankton; Microzooplankton; Phytoplankton; Biodiversity.
Ano: 2009
URL: https://archimer.ifremer.fr/doc/00208/31970/30411.pdf

Polychaete diversity at tropical Atlantic deep-sea sites: environmental effects
Provedor de dados: 5
Autores: Cosson-sarradin, Nathalie; Sibuet, Myriam; Paterson, Glj; Vangriesheim, Annick.
This study assesses how differences in nutrient flux and bottom currents affect the diversity and trophic structure of deep-sea polychaete communities from the tropical northeast Atlantic at 20 degrees to 21 degrees N latitude. Faunal assemblages were studied from 3 sets of USNEL box cores (0.25 m(2)) taken at depths of 1700, 3100 and 4600 m. In terms of primary productivity, the cores were taken beneath water which is eutrophic, mesotrophic and oligotrophic, respectively. Total polychaete abundance, abundance of dominant species, and faunal similarity and diversity were compared among the 3 sites. Polychaete abundance decreased with increasing depth. Community structure reflected environmental characteristics as well as the influence of coastal upwelling....
Tipo: Text
Palavras-chave: Deep sea; Tropical Atlantic; Diversity; Polychaete community; Environmental conditions.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00179/28978/27398.pdf

Fishing effects on diversity, size and community structure of the benthic invertebrate and fish megafauna on the Bay of Biscay coast of France
Provedor de dados: 5
Autores: Blanchard, Fabian; Le Loc'H, Francois; Hily, Christian; Boucher, Jean.
Within the framework of the 'dynamic equilibrium model', we tested the hypothesis that fishing causes major disturbance to benthic communities on deeper bottoms of the continental shelf. Benthic megafauna on the Bay of Biscay coast of France was sampled on fishing grounds subject to various conditions of exploitation. Samples were taken at around 100 m depth to avoid strong natural disturbances. Species diversity and the largest body mass class of invertebrates were smaller in strongly exploited areas than in moderately exploited ones. Biomass size spectra in strongly exploited areas were characterised by a comparatively large biomass of small invertebrates, hence the K-dominance curve of abundance was either above the biomass curve, or the curves...
Tipo: Text
Palavras-chave: Benthic communities; Community dynamics; Disturbance; Diversity; Size spectrum.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/00000/10896/7578.pdf

Community structure and temperature dynamics within a mussel assemblage on the Southern East Pacific Rise
Provedor de dados: 5
Autores: Sarrazin, Jozee; Walter, Cecile; Sarradin, Pierre-marie; Brind'Amour, Anik; Desbruyeres, Daniel; Briand, Patrick; Fabri, Marie-claire; Van Gaever, S; Vanreusel, A; Bachraty, Charleyne; Thiebaut, E.
The composition, biomass and diversity of the fauna in a Bathymodiolus thermophilus mussel assemblage colonizing diffuse flow areas on the SEPR is described and compared with biological characteristics of other hydrothermal assemblages. The spatio-temporal dynamics of temperatures over fine scales within the mussel habitat are characterized using newly-developed statistical approaches. Temperature data obtained from two adjacent habitats (a cirriped assemblage and a bare substratum) are compared. The results of the temperature data show that the mean temperature and the temperature variations were significantly higher in the mussel assemblage (mean temperature: 4.12 +/- 1.85 degrees C) in comparison with 2.40 +/- 0.14 degrees C in the cirriped assemblage...
Tipo: Text
Palavras-chave: East Pacific Rise; Temperature dynamics; Biomass; Diversity; Bathymodiolus thermophilus; Mussel assemblage; Hydrothermal vents.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-3570.pdf

Variability in natural behaviour, and observed reactions to an ROV, by mid-slope fish species
Provedor de dados: 5
Autores: Lorance, Pascal; Trenkel, Verena.
The behaviour of eight large benthopelagic fish taxa was analysed using video records collected with an ROV on the mid-slope of the Bay of Biscay. The studied species were roundnose grenadier (Coryphaenoides rupestris), orange roughy (Hoplostethus atlanticus), deep-sea scorpionfish (Trachyscorpia cristulata echinata), and black scabbardfish (Aphanopus carbo), as well as individuals belonging to the families Alepocephalidae, Chimaeridae, and Scyliorhinidae, and to the order Squaliformes. Some of the observed fish were grouped at the family taxonomical level due to visual identification to species being unreliable. Assumed natural (undisturbed) behaviour was categorised in terms of (i) body position with respect to the bottom sea floor, (ii) locomotion and...
Tipo: Text
Palavras-chave: ROV; Life strategies; Fish; Diversity; Continental slope; Behaviour; Bay of Biscay.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1228.pdf

Dragons of the Deep Sea: Kinorhyncha Communities in a Pockmark Field at Mozambique Channel, With the Description of Three New Species
Provedor de dados: 5
Autores: Cepeda, Diego; Pardos, Fernando; Zeppilli, Daniela; Sánchez, Nuria.
Cold seep areas are extremely reduced habitats with spatiotemporal variation of hydrocarbon-rich fluid seepage, low oxygen levels, and great habitat heterogeneity. Cold seeps can create circular to ellipsoid shallow depressions on the seafloor called pockmarks. We investigated two selected pockmarks, characterized by different gas emission, and two sites outside these geological structures at the Mozambique Channel to understand whether and how their environmental conditions affect the kinorhynch fauna in terms of density, richness, and community composition. A total of 11 species have been found living in the studied area, of which three are new species: Fissuroderes cthulhu sp. nov., Fujuriphyes dagon sp. nov., and Fujuriphyes hydra sp. nov. Densities...
Tipo: Text
Palavras-chave: Cold seeps; Deep sea; Ecology; Kinorhynchs; Meiofauna; Diversity; Taxonomy.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00648/75992/76894.pdf

First insights into macro-and meiofaunal colonisation patterns on paired wood/slate substrata at Atlantic deep-sea hydrothermal vents
Provedor de dados: 5
Autores: Cuvelier, Daphne; Beesau, Julie; Ivanenko, Viatcheslav; Zeppilli, Daniela; Sarradin, Pierre-marie; Sarrazin, Jozee.
In 2006, paired wood and slate panels, each equipped with a temperature probe, were deployed on three different localities on and around the Eiffel Tower edifice (Lucky Strike vent field, Mid-Atlantic Ridge) within close proximity of visible hydrothermal activity. Recovery of these panels took place in 2008. For this two-year deployment period, the composition of colonising organisms (both macro-and meiofauna) was assessed, along with image analyses of the deployment sites in 2006 and 2008. Very few significant differences in colonisation between organic (wood) and inorganic (slate) panels were revealed. Rather, the locality of deployment and the local environmental conditions and hydrothermal activity were found to influence taxonomic composition....
Tipo: Text
Palavras-chave: Colonisation; Organic and inorganic substrata; Mid-Atlantic Ridge; Hydrothermal; Recruitment; Diversity; Temperature.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00180/29090/27505.pdf

Deep-sea nematode assemblage has not recovered 26 years after experimental mining of polymetallic nodules (Clarion-Clipperton Fracture Zone, Tropical Eastern Pacific)
Provedor de dados: 5
Autores: Miljutin, Dmitry M.; Miljutina, Maria A.; Arbizu, Pedro Martinez; Galeron, Joelle.
We investigated nematode assemblages inhabiting the 26-year-old track created by experimental deep-sea mining of polymetallic nodules, and two adjacent, undisturbed sites, one with nodules and one without nodules. The aim was to compare density, assemblage structure, and diversity indices in order to assess the process of recovery of the nematode assemblage inhabiting the disturbed site. This experimental dredging was conducted in 1978 by the Ocean Minerals Company (USA) in the area of a French mining claim in the Clarion-Clipperton Fracture Zone (Tropical Eastern Pacific) at a depth of about 5000 m. The nematode assemblage had not returned its initial state 26 years after the experimental dredging: the total nematode density and biomass within the...
Tipo: Text
Palavras-chave: Body volume; Deep-sea; Density; Disturbance; Diversity; Dredging; Mining; Nematode; Nodule; Recolonization; Recovery.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00047/15867/13321.pdf

Etude des amibes marines et de leurs interactions avec les vibrios pathogènes d’huître
Provedor de dados: 5
Autores: Robino, Etienne.
Free living amoebae inhabit aquatic environments and use phagocytosis of bacteria for their nutrition. According to the hypothesis of coincidental evolution of virulence, the cellular and molecular mechanisms of phagocytosis being preserved from amoebae to the immune cells of animals, the predation exerted by amoebae could favor the emergence of pathogenic bacteria resistant to phagocytosis. Since 2008, Crassostrea gigas oysters have suffered from over-mortality in France. This poly-microbial disease involves the Herpes OsHV-1 μvar virus which causes an immunosuppression of oysters that are then colonized by various opportunistic pathogenic bacteria including vibrios inducing the death of the animal. V. tasmaniensis LGP32 is a facultative intracellular...
Tipo: Text
Palavras-chave: Amibes libres; Vibrios pathogènes; Phagocytose; Évolution fortuite; Diversité; Free-Living amoebae; Pathogenic vibrios; Phagocytosis; Coincidental evolution; Diversity.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00692/80419/83555.pdf

Phytoplankton diversity during the spring bloom in the northwestern Mediterranean Sea
Provedor de dados: 5
Autores: Percopo, Isabella; Siano, Raffaele; Cerino, Federica; Sarno, Diana; Zingone, Adriana.
The section of the Liguro-Provencal basin north of the Balearic Islands is one of the most productive sites in the whole Mediterranean Sea, with intense phytoplankton bloom lasting about 2 months in late winter-early spring. The phytoplankton species composition of the area was investigated using light and electron microscopy to analyze bottle and net samples collected at several stations in spring 2000 and 2003. Serial dilution cultures established from bottle samples were also examined. A total of 168 phytoplankton taxa was identified, consisting of 73 Coscinodiscophyceae, 47 Dinophyceae, 25 Coccolithophyceae and 4 Prymnesiophyceae, 5 Prasinophyceae, 3 Chrysophyceae, 2 Cryptophyceae, 2 Dictyochophyceae, 1 Euglenophyceae, 1 Pelagophyceae, 1...
Tipo: Text
Palavras-chave: Check-list; Diversity; NW Mediterranean Sea; Phytoplankton; Serial dilution cultures.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00038/14916/12245.pdf

Spatial imprints of plate tectonics on extant richness of terrestrial vertebrates
Provedor de dados: 5
Autores: Descombes, Patrice; Leprieur, Fabien; Albouy, Camille; Heine, Christian; Pellissier, Loic.
Aim  In interaction with past climate changes, it is likely that plate tectonics contributed to the shaping of current global species diversity, but so far this has not been statistically quantified at the global level. Here, we tested whether plate tectonics since the breakup of Gondwana left an imprint on current patterns of species richness of amphibians, birds and mammals. Location  Global. Methods  We reconstructed the absolute positions of continental plates since the Early Cretaceous and used this information to derive variables of latitudinal shifts and potential exchanges among landmasses that could have modulated species richness. Using a multi-model inference approach combining both contemporary and historical variables, we quantified the...
Tipo: Text
Palavras-chave: Amphibian; Bird; Continental drift; Diversity; Indo-Pacific; Madagascar; Mammal; Plate tectonics; Southeast Asia; Wallace line.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00373/48413/48711.pdf

Habitats et communautés benthiques du bassin oriental de la Manche : état des lieux au début du XXIe siècle
Provedor de dados: 5
Autores: Foveau, Aurelie.
This study is devoted in providing an updated knowledge on the macrobenthic community structure and biodiversity in the eastern English Channel in the early 2000s. Results obtained were compared with results obtained by L. Cabioch and colleagues for the period of 1971-1976. The distribution of macrobenthic communities is highly governed by the sedimentary cover. The Folk classification was used for sedimentology and mapping of bottom type characterization for the two study periods. A relative stability of the sedimentary cover was observed wherein 69% of the study area showed slight or no change in sedimentary cover. This is mainly due to the hydrodynamics in the area which is the dominant structuring factor in the eastern English Channel. Variations were...
Tipo: Text
Palavras-chave: Bassin oriental de la Manche; Couverture sédimentaire; Communautés benthiques; Diversité; Modélisation d’habitats; Comparaison; Eastern English Channel; Sedimentary cover; Benthic communities; Diversity; Habitat modeling; Comparison.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00083/19474/17089.pdf

Isolation and physiological characterization of two novel, piezophilic, thermophilic chemolithoautotrophs from a deep-sea hydrothermal vent chimney
Provedor de dados: 5
Autores: Takai, Ken; Miyazaki, Masayuki; Hirayama, Hisako; Nakagawa, Satoshi; Querellou, Joel; Godfroy, Anne.
P&gt;Two novel, thermophilic piezophiles, capable of chemolithoautotrophic growth, are successfully cultivated and isolated from a black smoker chimney at the TAG field (Mid Atlantic Ridge: MAR) by using a piezophilic cultivation technique. Both strains (strains 106 and 108) represent dominant cultivated populations of the microbial communities in the chimney surface habitat. Strain 106 represents typically thin, long spiral cells under the piezophilic growth condition but short bent cells under the non-piezophilic condition. It is a strictly chemolithoautotrophic gammaproteobacterium using reduced sulfur compounds as the electron donors, and nitrate and O-2 as the electron acceptors. Based on the 16S rRNA gene sequence, strain 106 would represent a novel...
Tipo: Text
Palavras-chave: Sp. nov.; Ecological signifiance; Hydrostatic pressure; Subsurface biosphere; Base composition; High temperature; Membrane lipids; Gen. nov.; Microorganisms; Diversity.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6652.pdf

Evaluation de l’état écologique des masses d’eau de transition dans le cadre de la DCE. Etude de la pertinence du suivi des peuplements du microphytobenthos estuarien
Provedor de dados: 5
Autores: Ribeiro, Lourenço; Le Bris, Anthony; Hernandez Farinas, Tania; Buchet, Remi; Dutertre, Mickaël; Metzger, Edouard; Rosa, Philippe; Gernez, Pierre; Lerouxel, Astrid; Barille, Laurent.
In order to establish the ecological status of water bodies, the European Water Framework Directive (WFD) is based on the evaluation of a number of biological quality elements, as well as physical parameters supporting the biology. In estuaries, phytoplankton monitoring was not considered relevant because of the high turbidity characterizing the large metropolitan estuaries and the French overseas departments (Guyana). In this work, we considered the possibility of using microphytobenthos (MPB) as a biological indicator of the ecological status of estuaries. This activity report summarizes the actions undertaken in 2017 under an AFB / Université de Nantes convention, which is structured around two main axes: the first axis is based on the analysis of the...
Tipo: Text
Palavras-chave: DCE; Diatomées benthiques; Diversité; Estuaires; Facteurs naturels; Gradient de perturbation; Loire; Bio-indication; Microphytobenthos; Pressions anthropiques; Télédétection.; Anthropogenic pressures; Benthic diatoms; Bio-indication; Diversity; Estuary; Loire; Microphytobenthos; Natural factors; Perturbation gradient; Remote sensing; WFD.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00446/55725/57376.pdf

Diversity patterns and activity of uncultured marine heterotrophic flagellates unveiled with pyrosequencing
Provedor de dados: 5
Autores: Logares, Ramiro; Audic, Stephane; Santini, Sebastien; Pernice, Massimo C.; De Vargas, Colomban; Massana, Ramon.
Flagellated heterotrophic microeukaryotes have key roles for the functioning of marine ecosystems as they channel large amounts of organic carbon to the upper trophic levels and control the population sizes of bacteria and archaea. Still, we know very little on the diversity patterns of most groups constituting this evolutionary heterogeneous assemblage. Here, we investigate 11 groups of uncultured flagellates known as MArine STramenopiles (MASTs). MASTs are ecologically very important and branch at the base of stramenopiles. We explored the diversity patterns of MASTs using pyrosequencing (18S rDNA) in coastal European waters. We found that MAST groups range from highly to lowly diversified. Pyrosequencing (hereafter '454') allowed us to approach to the...
Tipo: Text
Palavras-chave: Diversity; Heterotrophic-flagellates; MAST; Pyrosequencing; Stramenopiles.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00374/48501/48815.pdf

Distribution quantitative de la macrofaune benthique du peuplement des cailloutis dans le détroit du Pas de Calais (Manche orientale, France)
Provedor de dados: 5
Autores: Migne, A; Davoult, D.
Because of strong tidal currents, the bottom of the Dover Strait consists of coarse sediment which is colonized by a pebble community. A quantitative study, based on 0.1 m(2) quadrat samples taken by divers, was conducted on this community to establish the richness of benthic macrofauna (in terms of biomass and diversity) and to provide conclusive data on global community structure (spatial and temporal heterogeneity, trophic structure). Eight samples were taken between June 1992 and June 1993, eight replicates being taken on each sampling visit. One hundred and one species were identified, in 10 zoological groups, and a mean biomass of 281 g.m(-2) (ash free dry weight) was calculated. The Shannon diversity index was low (H' = 1.24) because of the strong...
Tipo: Text
Palavras-chave: Macrobenthos; Biomass; Trophic structure; Diversity; Spatial heterogeneity.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00093/20409/18076.pdf

Les Escherichia Coli potentiellement pathogenes dans l’environnement littoral : cas des STEC et des EPEC
Provedor de dados: 5
Autores: Baliere, Charlotte.
The contamination of coastal areas by potentially pathogenic enteric bacteria is of concern for the sustainability of some uses, such as shellfish farming, recreational shellfish harvesting and bathing. The contamination of these environments may occur through the land-spreading of livestock wastes, animal feces deposited on pastures, wastewaters from slaughterhouses or from municipal wastewater treatment plants. The presence of these bacteria in coastal environment may present a potential risk to human health. In fact, shellfish-borne outbreaks or human infections may occur by the consumption of shellfish from contaminated areas or the ingestion of water during bathing in contaminated waters, respectively. To date, few studies focusing on the presence and...
Tipo: Text
Palavras-chave: STEC; EPEC; Coquillages; Diversité; Virulence; Persistance; STEC; EPEC; Shellfish; Diversity; Virulence; Persistence.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00312/42322/41653.pdf

Species richness and distribution of benthic tidal flat fauna of the Banc d'Arguin, Mauritania
Provedor de dados: 5
Autores: Wijnsma, G; Wolff, Wj; Meijboom, A; Duiven, P; De Vlas, J.
The Banc d'Arguin in Mauritania, West Africa, is an area of tidal flats and shallow inshore waters bordering the sandy desert of the Sahara. The project Banc d'Arguin 1985-1986 investigated predominantly benthic biomass and production, the same data allow investigation of the species diversity and the distribution of the tidal flat fauna of the Banc d'Arguin. We sieved and analysed 410 core samples (diameter 10 cm) from 82 locations with 0.6 mm mesh size. A total of 111 taxa were identified. Polychaeta were most diverse with 42 species belonging to 20 families. Other large species groups were Gastropoda (20 species, 14 families), Amphipoda (14 taxa, 8 families) and Bivalvia (15 species, 10 families). Densities ranged from 152 to 5635 ind. m(-2), with an...
Tipo: Text
Palavras-chave: Banc d'Arguin; Bethos; Diversité; Limicole; Banc d'Arguin; Benthos; Diversity; Shorebirds.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43623/43309.pdf

Visual censuses around drifting fish aggregating devices (FADs): a new approach for assessing the diversity of fish in open-ocean waters
Provedor de dados: 5
Autores: Gaertner, J; Taquet, Marc; Dagorn, L; Merigot, B; Aumeeruddy, R; Sancho, G; Itano, D.
This study provides a baseline measure of pelagic fish species diversity around fish aggregating devices (FADs) in the Western Indian Ocean. Using data from visual censuses made by SCUBA divers around drifting FADs we (1) analysed 11 diversity indices describing 4 main components of pelagic diversity: number of species, evenness, taxonomic diversity and rarity and (2) discussed the viability of using visual censuses around FADs to monitor temporal and spatial changes in diversity patterns of pelagic fishes in the future. Our results not only show that a single index, such as species richness or the Shannon-Wiener index, cannot provide a complete description of pelagic fish diversity around FADs, but also that some components of diversity appear to be...
Tipo: Text
Palavras-chave: Indian Ocean; Drifting FADs; Diversity; Pelagic fishes.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4674.pdf

Long-range PCR and high-throughput sequencing of Ostreid herpesvirus 1 indicate high genetic diversity and complex evolution process
Provedor de dados: 5
Autores: Bai, Chang-ming; Morga, Benjamin; Rosani, Umberto; Shi, Jie; Li, Chen; Xin, Lu-sheng; Wang, Chong-ming.
Ostreid herpesvirus 1 (OsHV-1) is an important pathogen associated with mass mortalities of cultivated marine mollusks worldwide. Since no cell line allows OsHV-1 replication in vitro, it is difficult to isolate enough high-purity viral DNA for High-Throughput Sequencing (HTS). We developed an efficient approach for the enrichment of OsHV-1 DNA for HTS with long-range PCR. Twenty-three primer pairs were designed to cover 99.3% of the reference genome, and their performances were examined on ten OsHV-1 infected samples. Amplicon mixtures from six successfully amplified samples were sequenced with Illumina platform, and one of them (ZK0118) was also sequenced with the PacBio platform. PacBio reads were assembled into 2 scaffolds compared to 9−68 scaffolds...
Tipo: Text
Palavras-chave: Long-range PCR; OsHV-1; High-throughput sequencing; Evolution; Diversity.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00464/57566/64184.pdf

Diversity in Xanthophyll Cycle Pigments Content and Related Nonphotochemical Quenching (NPQ) Among Microalgae: Implications for Growth Strategy and Ecology
Provedor de dados: 5
Autores: Lacour, Thomas; Babin, Marcel; Lavaud, Johann.
Xanthophyll cycle‐related non‐photochemical quenching, which is present in most photoautotrophs, allows dissipating excess light energy. Xanthophyll cycle‐related NPQ depends principally on xanthophyll cycle pigments composition and their effective involvement in non‐photochemical quenching. Xanthophyll cycle‐related NPQ is tightly controlled by environmental conditions in a species/strain specific manner. These features are especially relevant in microalgae living in a complex and highly variable environment. The goal of this study was to perform a comparative assessment of non‐photochemical quenching ecophysiologies across microalgal taxa in order to underline specific involvement of non‐photochemical quenching in growth adaptations and strategies. We...
Tipo: Text
Palavras-chave: Diatoxanthin; Diversity; Microalgae; Nonphotochemical quenching; Photoacclimation; Pigments; Xanthophyll cycle; Zeaxanthin.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00590/70243/68267.pdf

Point, alpha and beta diversity of carnivorous fish along a depth gradient
Provedor de dados: 5
Autores: Lorance, Pascal; Souissi, Sami; Uiblein, Franz.
The catch from bottom longline stations sampled from a series of research cruises around Lanzarote and Fuerteventura (Canary Islands, NE Atlantic) was analysed in terms of fish distribution, density and diversity. The distribution of the number of species and individuals caught per station appeared to fit well the Poisson and Exponential distribution function, respectively. In particular, the parameter of the Poisson's distribution appeared to provide an index of the point (at station scale) diversity, and its confidence interval, allowing for statistical comparisons. The relationships between point diversity, the alpha diversity (in the depth strata) and the beta diversity (along the depth gradient) were investigated. Around the islands, the density and...
Tipo: Text
Palavras-chave: Canary Islands; Probability distributions; Density; Diversity; Demersal fishes; Longline.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/2002/publication-566.pdf

Microbial Diversity and Biosignatures: An Icy Moons Perspective
Provedor de dados: 5
Autores: Jebbar, Mohamed; Hickman-lewis, Keyron; Cavalazzi, Barbara; Taubner, Ruth-sophie; Rittmann, Simon K.-m. R.; Antunes, Andre.
The icy moons of the outer Solar System harbor potentially habitable environments for life, however, compared to the terrestrial biosphere, these environments are characterized by extremes in temperature, pressure, pH, and other physico-chemical conditions. Therefore, the search for life on these icy worlds is anchored on the study of terrestrial extreme environments (termed “analogue sites”), which harbor microorganisms at the frontiers of polyextremophily. These so-called extremophiles have been found in areas previously considered sterile: hot springs, hydrothermal vents, acidic or alkaline lakes, hypersaline environments, deep sea sediments, glaciers, and arid areas, amongst others. Such model systems and communities in extreme terrestrial environments...
Tipo: Text
Palavras-chave: Extremophiles; Prokaryotes; Metabolism; Diversity; Adaptation; Space explorat.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00606/71771/70275.pdf

Spatio-seasonal patterns of demersal fish communities on the French Guiana Coast
Provedor de dados: 5
Autores: Le Joncour, Anna; Blanchard, Fabian; Tagliarolo, Morgana.
Estuarine and coastal areas are often considered as hotspots due to their high diversity and ecological importance. However, communities living on those areas are often submitted to fishery and climate change pressures causing modifications on fish assemblages. French Guiana’s coastal shelf is characterised by warm waters with high turbidity and low salinity caused by the large river discharges from the Amazon and nearby estuaries. The high productivity of these areas supports fisheries and aquaculture activities. However, the structure and dynamics of coastal fish populations in French Guiana have seldom been studied. The aim of this study was to understand the effect of environmental conditions, as well as the influence of the coast and nearby estuaries...
Tipo: Text
Palavras-chave: French Guiana; Coastal community; Estuary; Diversity; Tropical waters; Fisheries management.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00607/71929/73534.pdf

Cyanobacterial populations that build 'kopara' microbial mats in Rangiroa, Tuamotu Archipelago, French Polynesia
Provedor de dados: 5
Autores: Richert, Laurent; Golubic, Stjepko; Le Guedes, Roland; Herve, Annie; Payr, Claude.
Cyanobacterial populations, the primary producers and builders of 'kopara' microbial mats were studied in four selected ponds along the rim of the Rangiroa Atoll, French Polynesia using a polyphasic approach. Seven isolates were maintained in uni-cyanobacterial cultures, characterized morphotypically and phylogenetically by evaluating sequences of the 16S rRNA gene of about 620 base pairs in length. Cyanobacteria in natural populations were analyzed microscopically, characterized morphotypically, and compared with cultured strains. Three of the isolates were identified in the field samples: Lyngbya aestuarii, Johannesbaptistia pellucida and Chroococcus submarinus were present in the mats only as minor components, whereas the species of Schizothrix that...
Tipo: Text
Palavras-chave: 16S rRNA; Polyphasic approach; Phylogeny; Microbial mats; Microbial ecology; Kopara; Diversity; Cyanobacteria; Culture.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2050.PDF

Photo-protective compounds in red macroalgae from Brittany: Considerable diversity in mycosporine-like amino acids (MAAs)
Provedor de dados: 5
Autores: Lalegerie, Fanny; Lajili, Sirine; Bedoux, Gilles; Taupin, Laure; Stiger-pouvreau, Valerie; Connan, Solène.
To cope with the biotic and abiotic stresses experienced within their environment, marine macroalgae have developed certain defence mechanisms including the synthesis of photo-protective molecules against light and particularly harmful UV radiation. The aim of this study was to screen selected red algae, a highly diverse phylogenetic group, for the production of photo-protective molecules. The pigment content and composition (i.e. chlorophyll-a, phycobiliproteins and carotenoids) and the composition of mycosporine-like amino acids (MAAs) were studied in 40 species of red macroalgae collected in Brittany (France), at two distinct periods (i.e. February and July 2017). A high inter-specific variability was demonstrated in terms of pigment content and MAA...
Tipo: Text
Palavras-chave: Algae; Diversity; HPLC; MAAs; Metabolites; Photo-protection; Pigments; Rhodophyta; Screening.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00488/59929/63133.pdf

Diversity and stability of an estuarine trophic network
Provedor de dados: 5
Autores: Lobry, Jeremy; David, V; Pasquaud, S; Lepage, M; Sautour, B; Rochard, E.
Estuarine areas provide highly valuable ecosystem benefits for human populations, despite being under intense demographic, economic and ecological pressures. Hence, an understanding of the structure and function of estuarine ecosystems is essential for understanding the persistence and stability of these ecosystems and their response to perturbations. This study synthesises available data and knowledge about the Gironde estuary (SW France) in a mass-balanced trophic model to illustrate potential key patterns in the functioning of the estuarine ecosystem and key elements of its stability. In order to evaluate the total direct and indirect impact on the whole community of the 2 main sources of anthropogenic perturbations in the estuarine area, mortalities...
Tipo: Text
Palavras-chave: Gironde estuary; Ecopath; Diversity; Stability; Network analysis; Food web; Estuarine ecosystem.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4290.pdf

Evolution saisonnière des populations de diatomées benthiques dans les lagunes aménagées de Certes
Provedor de dados: 5
Autores: Malissen, M.o.; Lasserre, P.
In lagoons and estuarine ecosystems, the benthic microflora contributes considerably to the primary production of the area and consists largely of diatoms Monthly samplings have been made from December 1976 to March 1978 in a shallow station characterized by the lack of macrophytes. Two sets of monthly sam­plings were made allowing in theone hand a qualitative analysis and on the other hand a quantitative study by cellular counts. The diatom populations show a cyclic evolution with two peaks : one in February 1977 and the other in September 1977. This cycle is confirmed by the di­versity and dominance analysis. Seasonal evolution is characterized by the domi­nance of one or more species with well marked succession of dominant species (Nitzschia Navicula et...
Tipo: Text
Palavras-chave: Diatomées benthiques; Variations saisonnières; Diversité; Lagunes; Bassin d'Arcachon; Benthic diatoms; Seasonal variations; Diversity; Lagoons; Arcachon Bay.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00306/41679/40888.pdf

Modification de l'équilibre démographique de la meiofaune dans les lagunes aménagées de Certes
Provedor de dados: 5
Autores: Castel, J.; Lasserre, P.
Monthly sampling for a 2-year period allowed comparisons between the communities of meiofauna living in fish ponds ("reservoirs a poissons de Certes") and those inhabiting a contiguous tidal pool ("lac de tonne"). Nematods and copepods constitute the bulk of the meiofaunal populations. The community structure of co­pepods is considered in detail.The communities of copepods are clearly separated between the two areas. In terms of abundance, diversity and species persistence, the meiofauna is more stable in the intertidal pool than in the fish ponds. When the seasons are well marked, the community structure of the cope­pods in the fish ponds is nearly equilibrated in spring, with a maximum of diver­sity in May-June. During high eutrophication periods, in...
Tipo: Text
Palavras-chave: Lagunes; Diversité; Distribution différentielle; Meiofaune; Copépodes; Bassin d'Arcachon; Lagoons; Diversity; Differential distribution; Meiofauna; Copepods; Arcachon Bay.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00306/41681/40890.pdf

Analyse des captures des pêcheries marines et lagunaires d'Egypte en liaison avec la construction du haut barrage d'Assouan
Provedor de dados: 5
Autores: Bebars, Mi; Lasserre, G; Hoai, Tl.
Annually exploited communities from the Nile delta and two nearby lagoons (Manzalah and Edkou) were monitored from 1962 to 1989. The changes in community structure were analysed as a function of two events: fishing pressure growth (motorized fishing vessels) which increased by a factor of 19 between 1952 and 1962; and the construction of the Aswan Dam, which was built between 1965 and 1969, reducing the flow of the Nile by 90 %. Before the construction of the dam, increased sea fishing pressure led to a decline in landings from 33,832 tons in 1962 to 8,522 tons in 1969, but with no structural change in the exploited community. However, following completion of the dam in 1969, the community structure changed and a significant correlation was detected...
Tipo: Text
Palavras-chave: Impact; Aswan Dam; Yield; Fisheries; Diversity; Lagoon.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00093/20406/18073.pdf

Colonization patterns along the equatorial West African margin: Implications for functioning and diversity maintenance of bathyal and abyssal communities
Provedor de dados: 5
Autores: Menot, Lenaick; Crassous, Philippe; Desbruyeres, Daniel; Galeron, Joelle; Khripounoff, Alexis; Sibuet, M.
In the framework of the deep-sea environmental programme BIOZAIRE (Ifremer-Total), colonization trays were deployed for 283-433 days at three sites along the equatorial West African margin: ZA at 1300-m depth, ZC at 4000-m depth far from the Congo canyon and ZD at 4000-m depth close to the Congo canyon. The experiments aimed at determining the influence of depth and local environmental settings on macrofaunal colonization patterns and organic carbon degradation rates. The trays were filled with glass beads and this artificial substrate was enriched with ground particulate organic matter in a gradient of 0%, 0.34%, 1.02% and 3.43% organic carbon. The highest rates of organic carbon degradation ranged, according to the duration of the experiments, from 1.59...
Tipo: Text
Palavras-chave: Diversity; Organic enrichment; Macrofauna; Deep sea; Colonization; Biozaire.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7323.pdf

Exploring the Phylogeny and Species Diversity of Chelidoperca (Teleostei: Serranidae) From the Western Pacific Ocean by an Integrated Approach in Systematics, With Descriptions of Three New Species and a Redescription of C. lecromi Fourmanoir, 1982
Provedor de dados: 5
Autores: Lee, Szu-hsuan; Lee, Mao-ying; Matsunuma, Mizuki; Chen, Wei-jen.
With 11 species, the genus Chelidoperca is a small group of teleost fishes belonging to the Serranidae. They are bottom-dwelling fishes living on continental shelves/slopes in offshore areas or on remote seamounts/banks at depths ranging from around 40-400 m mostly in the tropical Indo-West Pacific. Over the past few years, efforts have been made to resolve the taxonomy of Chelidoperca, and subsequently four new species were described. However, these recent advances were made with a traditional approach (i.e., morphology) and limited examinable materials, usually preserved specimens, from ichthyological collections. Further investigations are still needed to address the gaps in our knowledge about their diversity, phylogeny, and biogeography. In this...
Tipo: Text
Palavras-chave: Fishes; New species; Distribution; Integrated taxonomy; Diversity; West-Pacific; Tropical Deep-Sea Benthos.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00620/73231/72839.pdf

Eastern English Channel fish assemblages: measuring the structuring effect of habitats on distinct sub-communities
Provedor de dados: 5
Autores: Vaz, Sandrine; Carpentier, Andre; Coppin, Franck.
Multivariate and spatial analyses are used to identify and locate fish, cephalopod, and macrocrustacean species assemblages in the eastern English Channel from 1988 to 2004. Four sub-communities with varying diversity levels were identified in relation to depth, salinity, temperature, seabed shear stress, sediment type, and benthic community nature. From 1997 to 2004, some 25% of overall community structure variance could be related to the available environmental descriptors and 20% to persistent factors such as depth, seabed shear stress, sediment, and macro-invertebrate community type. Although there may be significant interannual shifts in overall community structure and composition, the sub-communities identified persisted over time, reflecting the...
Tipo: Text
Palavras-chave: Structuring environment; Spatial patterns; Fish community; Eastern English Channel; Diversity.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2829.pdf

Tracing carbon assimilation in endosymbiotic deep-sea hydrothermal vent Mytilid fatty acids by C-13-fingerprinting
Provedor de dados: 5
Autores: Riou, V.; Bouillon, S.; Serrao Santos, R.; Dehairs, F.; Colaco, A.
Bathymodiolus azoricus mussels thrive at Mid-Atlantic Ridge hydrothermal vents, where part of their energy requirements are met via an endosymbiotic association with chemolithotrophic and methanotrophic bacteria. In an effort to describe phenotypic characteristics of the two bacterial endosymbionts and to assess their ability to assimilate CO2, CH4 and multi-carbon compounds, we performed experiments in aquaria using C-13-labeled NaHCO3 (in the presence of H2S), CH4 or amino-acids and traced the incorporation of C-13 into total and phospholipid fatty acids (tFA and PLFA, respectively). 14:0; 15:0; 16:0; 16:1(n - 7) c+t; 18:1(n - 13) c+t and (n - 7) c+t; 20:1(n - 7); 20:2(n - 9,15); 18:3(n - 7) and (n - 5,10,13) PLFA were labeled in the presence of...
Tipo: Text
Palavras-chave: Mid atlantic ridge; Mussel bathymodiolus azoricus; Methanotrophic bacteria; Marine invertebrates; Diversity; Organic compounds; Lipid composition; Dual symbiosis; Methane; Biomarkers.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00207/31868/30275.pdf

Diversite de populations microbiennes thermophiles d'une cheminée hydrothermale océanique profonde : cultures d'enrichissement en bioréacteur et isolement d'espèces nouvelles
Provedor de dados: 5
Autores: Postec, Anne.
To explore the microbial diversity at deep sea vents, molecular techniques based on the analysis of the gene coding the 16S ribosomal RNA permitted to highlight a large archaeal and bacterial diversity. Nevertheless, the diversity of the hydrothermal microorganisms cultivated to date remains much lower than the diversity described with molecular tools. Innovative methods should therefore be used in order to cultivate new microorganisms, and also determine their metabolic properties and their potential role in the ecosystem. That was the purpose of this study: a bioreactor gas-lift was used to perform enrichment cultures in continuous, during 50 days, in thermophilic (60°C) and hyperthermophilic (90°C) conditions. A hydrothermal chimney sample (Rainbow...
Tipo: Text
Palavras-chave: Strain isolation and characterization; Hybridization; Sequencing; Cloning; DGGE; Gas lift bioreactor; Enrichment cultures; Deep sea hydrothermal vents; Bacteria; Archaea; Diversity; Isolement et caractérisation de souche; Hybridation; Séquençage; Clonage; DGGE; Bioréacteur gas lift; Cultures d'enrichissement; Sources hydrothermales océaniques profondes; Bacteria; Archaea; Diversité.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/these-367.pdf

Tidal cycle control of biogeochemical and ecological properties of a macrotidal ecosystem
Provedor de dados: 5
Autores: Cadier, Mathilde; Gorgues, Thomas; Lhelguen, Stephane; Sourisseau, Marc; Memery, Laurent.
In some regions, tidal energy can be a key factor in the generation of variability in physical and biogeochemical properties throughout the water column. We use a numerical model resolving tidal cycles and simulating diversity in phytoplankton to assess the impact of tidal mixing on vertical stability and phytoplankton community (total biomass and diversity) in a macrotidal sea (Iroise Sea, France). Two different time scales have been considered: semi-diurnal and spring/neap tidal cycles. Our results show that the latter is the one primarily influencing the phytoplankton growth conditions by modifying the vertical stratification. During spring tide, the growth is rather light-limited whereas neap tide conditions lead to vertical stabilization and better...
Tipo: Text
Palavras-chave: Macrotidal ecosystem; Spring; Neap tidal cycle; Semidiurnal cycle; Phytoplankton communities; Diversity; Competition.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00395/50612/51325.pdf

In situ structuring of virioplankton through bacterial exoenzymatic activity: interaction with phytoplankton
Provedor de dados: 5
Autores: Ory, Pascaline; Palesse, S.; Delmas, Daniel; Montanie, Helene.
The abundance and composition of microbial communities were investigated during 2007 in Marennes Oleron Bay (France) in order to characterize the biological relationships governing the planktonic food web. Compared to the results of previous years, there was a lower abundance and a lower magnitude of variations in autotrophic and heterotrophic microbial entities in 2007. Using a Spearman rank correlation analysis, a significant link for biological abundance was only noted between bacteria and ciliates. However, an interesting relationship was highlighted between chlorophyll a and bacterial aminopeptidase and beta-glucosidase exoenzymatic activities. Two characteristic periods of virus-bacteria uncoupling were observed in spring and autumn 2007. Using...
Tipo: Text
Palavras-chave: Virus; Bacteria; Phytoplankton; Diversity; Aminopeptidase.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00050/16099/13571.pdf

Diversité et différentiation génétique chez l'huître plate européenne : de la population à l'individu (Actes)
Provedor de dados: 5
Autores: Boudry, Pierre; Launey, Sophie; Diaz-almela, A.; Naciri-graven, Yamama; Ledu, Christophe; Mira, S.; Taris, Nicolas; Bonhomme, Francois; Lapegue, Sylvie.
PCR-based DNA markers enable the study of diversity and differentiation of marine organisms at different stages of their life cycle. Our study of European fiat oyster (Ostrea edulis) populations aimed to describe their spatial and temporal dynamics. First, we analyzed adults sampled over the natural range of the species. An Atlantic/Mediterranean differentiation pattern was observed. Similar patterns of variation were found using allozymes, microsatellites and mitochondrial DNA, aIl which support an isolation by distance model. High variability was observed in the range of diversity between populations using a mitochondrial marker, a reflection of small effective population sizes in sorne locations. A 10fold quantitative difference was observed in Fst,...
Tipo: Text
Palavras-chave: Recruitment; Diversity; Molecular markers; Population genetics; Ostrea edulis; Flat oyster; Dynamique de recrutement; Diversité génétique; Microsatellites; Marqueurs moléculaires; Génétique des populations; Ostrea edulis; Huître plate.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/acte-2851.pdf

Marine zooplanktonic diversity: a view from the South Atlantic
Provedor de dados: 5
Autores: Boltovskoy, D; Correa, N; Boltovskoy, A.
Approximately 7000 marine zooplanktonic species have been described so far for the World Ocean; in the South Atlantic the presence of 40% of these has been confirmed, and an additional 20-30% are expected to be recorded in the future. The overall number of described species is very low when compared with other communities, and yet it may not be too far from the final, complete inventory. Very ample geographic distributional ranges, compositional similarity between the major oceanic basins, and declining species description rates suggest that the undescribed fraction of marine zooplankton is nowhere as large as those suggested for the biosphere as a whole. It is anticipated that the highest proportions of new species will be among the groups associated....
Tipo: Text
Palavras-chave: Zooplancton; Diversité; Atlantique Sud; Zooplancton; Diversity; South Atlantic.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00322/43310/42964.pdf

Biogeography of Micronekton Assemblages in the Natural Park of the Coral Sea
Provedor de dados: 5
Autores: Receveur, Aurore; Vourey, Elodie; Lebourges-dhaussy, Anne; Menkes, Christophe; Menard, Frederic; Allain, Valerie.
Mesopelagic resources are central to the ecosystem but remain poorly studied mainly due to the lack of observations. This paper investigates the assemblages of micronekton organisms and their habitat in the Natural Park of the Coral Sea around New Caledonia (southwest Pacific) using data from 141 pelagic trawls. A total of 67,130 micronekton individuals (fish, crustaceans, and mollusks) were collected with 252 species identified among 152 genus and 76 families. In the analyses, we focused on 22 species; each were present in more than 33 trawls (i.e., in more than 25% of the total number of trawls) and studied their spatial distribution and vertical dynamic behavior. Community structure was investigated through region of common profile (RCP), an innovative...
Tipo: Text
Palavras-chave: Diversity; Southwest Pacific Ocean; Mesopelagic zone; Region of common profile; Diel vertical migration; Pelagic trawl.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00644/75563/76480.pdf

Echinoderms communities in the Tunantal area, Gulf of Cariaco, Venezuela
Provedor de dados: 5
Autores: Gomez-maduro, Maria Cecilia; Hernandez-avila, Ivan.
Echinoderms are relevant in the structure of marine benthic assemblages, both due their diversity and their ecological niche. However, studies related with occurrence, abundance and patterns of distribution of echinoderms in Venezuela are still scarce. In the present study we describe the echinoderms in shallow-waters habitats (corals patches, Thalassia beds, sandy bottom, rocky subtidal shore, and mouth of river) at Tunantal bay, Golfo de Cariaco, Venezuela, an area that face threats related with the increase of urban development. Samples were performed during September-October 2010 and February-April 2011, using quantitative (1 m(2) plots) and qualitative diving observations. Measurements include density, number of species, evenness, Shannon diversity...
Tipo: Text
Palavras-chave: Caribbean; Shallow environments; Echinometra; Assemblage; Diversity.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00439/55011/56440.pdf

Structure et importance des peuplements zooplanctoniques dans la baie d'Arcachon : milieux ouverts et lagunes aménagées de Certes
Provedor de dados: 5
Autores: Castel, J.; Courties, C.
Specific composition and distribution of the zooplankton in Arcachon Bay varie along a salinity gradient from oceanic to neritic and lagoonal condi­tions. A peak of density and biomass is recorded in spring due to an increase of holoplanktonic species as well as larvae of benthic Invertebrates. A second maxi­mum of abundance is observed in autumn. The community structure of copepods and polychaets larvae is considered in detail. The diversity (Shannon index, Sanders's rarefaction) decreases from the mouth of the Bay to the inner neritic water mass. Demographic parameters indi­cate that the populations structure is affected by the salinity gradient. Biomass increases significantly from the oceanic water to the inner neritic water mass while the species...
Tipo: Text
Palavras-chave: Zooplancton; Copépodes; Polychètes; Diversité; Distribution différentielle; Bassin d'Arcachon; Zooplankton; Copepods; Polychaets; Diversity; Differential distribution; Arcachon Bay.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00306/41680/40889.pdf

A preliminary revision of knowledge status of felids in Argentina
Provedor de dados: 81
Autores: Lucherini,Mauro; Soler,Lucía; Luengos Vidal,Estela.
Argentina is the host of 10 wild felids (28% of the world total). Although the Cat Specialist Group Action Plan has classified the conservation status of Argentine cats as relatively good, the ranking was based on a largely incomplete database for at least 80% of the species. Here we review the current status of knowledge and research effort of Argentine cats, compare it with their distribution, habitat association and conservation status and provide guidelines for their future research. Between 1990 and 2000, cat research has received increasing attention in Argentina. Twenty-four projects have been carried out, but only 13 studies are still in progress. A rank of research priority has been calculated for each felid and ecoregion. Our analysis showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Carnivores; Conservation; Diversity; Ecoregions; Felids; Latin America; Leopardus tigrina; Oncifelis guigna; Oreailurus jacobita.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832004000100002

Sexual selection on land snail shell ornamentation: a hypothesis that may explain shell diversity
Provedor de dados: 16
Autores: Schilthuizen, M.
Background: Many groups of land snails show great interspecific diversity in shell ornamentation, which may include spines on the shell and flanges on the aperture. Such structures have been explained as camouflage or defence, but the possibility that they might be under sexual selection has not previously been explored.   Presentation of the hypothesis: The hypothesis that is presented consists of two parts. First, that shell ornamentation is the result of sexual selection. Second, that such sexual selection has caused the divergence in shell shape in different species.   Testing the hypothesis: The first part of the hypothesis may be tested by searching for sexual dimorphism in shell ornamentation in gonochoristic snails, by searching for increased...
Tipo: Article / Letter to the editor
Palavras-chave: Mollusca; Land snails; Sexual selection; Shells; Diversity; 42.73.
Ano: 2003
URL: http://www.repository.naturalis.nl/record/224794

Epitypification of Fusarium oxysporum – clearing the taxonomic chaos
Provedor de dados: 16
Autores: Lombard, L.; Sandoval-Denis, M.; Lamprecht, S.C.; Crous, P.W.
Fusarium oxysporum is the most economically important and commonly encountered species of Fusarium. This soil-borne fungus is known to harbour both pathogenic (plant, animal and human) and non-pathogenic strains. However, in its current concept F. oxysporum is a species complex consisting of numerous cryptic species. Identification and naming these cryptic species is complicated by multiple subspecific classification systems and the lack of living ex-type material to serve as basic reference point for phylogenetic inference. Therefore, to advance and stabilise the taxonomic position of F. oxysporum as a species and allow naming of the multiple cryptic species recognised in this species complex, an epitype is designated for F. oxysporum. Using multi-locus...
Tipo: Article / Letter to the editor
Palavras-chave: Cryptic species; Diversity; Human and plant pathogens; Species complex; Subspecific classification.
Ano: 2019
URL: http://www.repository.naturalis.nl/record/673170

Inventory and conservation of endangered, endemic and economically important flora of Hamiguitan Range, southern Philippines .
Provedor de dados: 16
Autores: Amoroso, V.B.; Obsioma, L.D.; Arlalejo, J.B.; Aspiras, R.A.; Capili, D.P.; Polizon, J.J.A.; E.B. Sumile.
This research was conducted to inventory and assess the flora of Mt Hamiguitan. Field reconnaissance and transect walk showed four vegetation types, namely: dipterocarp, montane, typical mossy and mossy-pygmy forests. Inventory of plants showed a total of 878 species, 342 genera and 136 families. Of these, 698 were angiosperms, 25 gymnosperms, 41 ferns and 14 fern allies. Assessment of conservation status revealed 163 endemic, 34 threatened, 33 rare and 204 economically important species. Noteworthy findings include 8 species as new record in Mindanao and one species as new record in the Philippines. Density of threatened species is highest in the dipterocarp forest and decreases at higher elevation. Species richness was highest in the montane forest and...
Tipo: Article / Letter to the editor
Palavras-chave: Assessment; Diversity; Philippines protected area; Vegetation types.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/525755

The largest type study of Agaricales species to date: bringing identification and nomenclature of Phlegmacium (Cortinarius) into the DNA era
Provedor de dados: 16
Autores: Liimatainen, K.; Niskanen, T.; Dima, B.; Kytövuori, I.; Ammirati, J.F.; Frøslev, T.G.
Cortinarius is a species-rich and morphologically challenging genus with a cosmopolitan distribution. Many names have not been used consistently and in some instances the same species has been described two or more times under separate names. This study focuses on subg. Phlegmacium as traditionally deﬁned and includes species from boreal and temperate areas of the northern hemisphere. Our goals for this project were to: i) study type material to determine which species already have been described; ii) stabilize the use of Friesian and other older names by choosing a neo- or epitype; iii) describe new species that were discovered during the process of studying specimens; and iv) establish an accurate ITS barcoding database for Phlegmacium species. A total...
Tipo: Article / Letter to the editor
Palavras-chave: Basidiomycota; Diversity; DNA barcoding; ITS; Taxonomy; Typiﬁcation.
Ano: 2014
URL: http://www.repository.naturalis.nl/record/532330

New studies of decapod crustaceans from the Upper Jurassic lithographic limestones of southern Germany
Provedor de dados: 16
Autores: Schweigert, Günter; Garassino, Alessandro.
The Upper Jurassic lithographic limestones of southern Germany have long been known for their exceptional preservation of decapod crustaceans (Glaessner, 1965), similar to the Upper Cretaceous of Lebanon (Hakel, Hadjoula) and the still poorly known Callovian strata at La Voulte-sur-Rhône (France). In these non-bioturbated limestones, the decay of decapod skeletons is reduced, so that besides the heavily mineralized chelae and carapace often even delicate structures such as pleopods and antennae are preserved. Recently, new decapod material has been obtained from both scientific and commercial excavations, in part in reopened lithographic limestone quarries.
Tipo: Article / Letter to the editor
Palavras-chave: Crustacea; Decapoda; Lithographic limestones; Upper Jurassic; Solnhofen; Fossil record; Diversity.
Ano: 2003
URL: http://www.repository.naturalis.nl/record/534281

Culturable mycobiota from Karst caves in China, with descriptions of 20 new species
Provedor de dados: 16
Autores: Zhang, Z.F.; Liu, F.; Zhou,, X.; Liu, X.Z.; Liu, S.J.; Cai, L.
Karst caves are distinctly characterised by darkness, low to moderate temperatures, high humidity, and scarcity of organic matter. During the years of 2014–2015, we explored the mycobiota in two unnamed Karst caves in Guizhou province, China, and obtained 563 fungal strains via the dilution plate method. Preliminary ITS analyses of these strains suggested that they belonged to 246 species in 116 genera, while 23.5 % were not identified to species level. Among these species, 85.8 % (211 species) belonged to Ascomycota; 7.3 % (18 species) belonged to Basidiomycota; 6.9 % (17 species) belonged to  Mucoromycotina. The majority of these species have been previously known from other environments, mostly from plants or animals as pathogens, endophytes or via a...
Tipo: Article / Letter to the editor
Palavras-chave: Diversity; ITS DNA barcodes; Morphology; Systematics; Troglobitic fungi.
Ano: 2017
URL: http://www.repository.naturalis.nl/record/629939

The manifold characters of orbicules: structural diversity, systematic significance, and vectors for allergens
Provedor de dados: 16
Autores: Vinckier, S.; Cadot, P.; Smets, E.
In the anthers of flowering plants, gymnosperms, and seed ferns, tiny (¡1 mm) granules might occur on the radial and innermost tangential wall of secretory tapetum cells. These sporopollenin granules develop simultaneously with the pollen exine and are called orbicules or Ubisch bodies. The present paper focuses on two quite different topics associated with orbicules. The morphological and ultrastructural diversity of orbicules in the order Gentianales is summarized, and it is demonstrated that orbicules are a plesiomorphic feature in the order. Furthermore, orbicule characters seemed to be correlated with evolutionary trends in pollen dispersal unit and tapetum type features. In the second part, we report on our investigation of Corylus avellana L....
Tipo: Article / Letter to the editor
Palavras-chave: Orbicules; Morphology; Diversity; Gentianales; Plesiomorphic feature; Pollen; Corylus avellana L.
Ano: 2005
URL: http://www.repository.naturalis.nl/record/407306

Larger Foraminfera as marine environmental indicators
Provedor de dados: 16
Autores: Renema, W.
Tipo: Article / Letter to the editor
Palavras-chave: Foraminifera; Spermonde Shelf; Sulawesi; Cabilao; Philippines; Recent; Palaeogene; Diversity.
Ano: 2002
URL: http://www.repository.naturalis.nl/record/219196

The phylogenetic position of Artematopodidae (Coleoptera: Elateroidea), with description of the first two Eurypogon species from China
Provedor de dados: 16
Autores: Kundrata, R.; Bocakova, M.; Bocak, L.
The Artematopodidae is a species-poor beetle family with contentious relationships to byrrhoid and elateroid families. Recent molecular phylogenetic analyses brought ambiguous results based on a single sequenced species. We investigated the taxonomic placement of Artematopodidae within Elateriformia using ribosomal (18S, 28S) and mitochondrial (rrnL, cox1) molecular markers and three artematopodid species. Our analyses placed Artematopodidae close to Omethidae+Telegeusidae in a basal position of broadly defined Elateroidea. Additionally, we described the first artematopodid species from China – Eurypogon jaechi sp. nov. and E. heishuiensis sp. nov. These species are reported from mountains of Yunnan and can be easily distinguished from their Palaearctic...
Tipo: Article / Letter to the editor
Palavras-chave: MtDNA; RDNA; Diversity; Elateriformia; New species; Palaearctic Region; Phylogeny; Taxonomy; 42.75; 42.64.
Ano: 2013
URL: http://www.repository.naturalis.nl/record/462591

Malaysian limestone orchids status: diversity, threat and conservation
Provedor de dados: 16
Autores: G. Rusea; M.Y.L. Lim; S.N. Phoon; W.S.Y. Yong; C.H. Tang; H.E. Khor; J.O. Abdullah; J. Abdullah.
To date, a total of 288 species from 96 genera were identified from the limestone areas in Perlis and Padawan-Bau, Sarawak, of which many of these are restricted to limestone habitat and either endemic to Perlis or to Sarawak. Knowledge and data obtained from the field observation over the past 8 years leads us to report that at least 15 species endemic to limestone has become rare in the wild in Perlis, Bau and Padawan Sarawak. This was mainly attributed by: i) lack of emphasis by the government on understanding and protecting biodiversity in this kind of habitat; ii) lack of scientists willing to do research in dangerous and disaster prone limestone habitat; and iii) lack of knowledge and awareness among local communities on the importance of conserving...
Tipo: Article / Letter to the editor
Palavras-chave: Conservation; Diversity; Limestone orchids; Malaysian; Threat.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/525224

‘Cort short on a mountaintop’ – Eight new species of sequestrate Cortinarius from sub-alpine Australia and affinities to sections within the genus
Provedor de dados: 16
Autores: Danks, M.; Lebel, T.; Vernes, K.
During the course of research on mammal mycophagy and movement in the Northern Tablelands of New South Wales, Australia, extensive collections of sequestrate fungi were made, including numerous cortinarioid taxa. Historically any novel taxa would have been described in the cortinarioid sequestrate genera Descomyces, Hymenogaster, Protoglossum, Quadrispora, Thaxterogaster or Timgrovea based on broad morphological similarities of the sporocarps and spore ornamentation. However, consistent with other recent analyses of nuclear DNA regions, taxa from sequestrate genera were found to have affinities with Cortinarius and Descolea or Hebeloma, and to be scattered across many sections within Cortinarius. None of the historical sequestrate cortinarioid genera are...
Tipo: Article / Letter to the editor
Palavras-chave: Diversity; Systematics; Taxonomy; Thaxterogaster.
Ano: 2010
URL: http://www.repository.naturalis.nl/record/531690

Biogeography of Mindoro mosses
Provedor de dados: 16
Autores: Linis, V.C.
The moss flora of Mindoro Island was updated based on the 2004–2006 expeditions conducted by the author. The island’s moss flora now consists of 282 species in 128 genera and 39 families, which is higher than Palawan but far less than those of Luzon and Mindanao. Generally, the flora is most abundant in the eastern rainy part of the island, especially along mid-elevations on the east-facing slope of the central mountain range in the transition zone between montane and mossy forests. Moss diversity is also greater in riverine forests than in inland forests at low elevations. Only three moss taxa, Rhaccocarpus alpinus, Dicranoloma daymannianum and Distichophyllum noguchianum, have their Philippine range restricted to the island. Distichophyllum noguchianum...
Tipo: Article / Letter to the editor
Palavras-chave: Biogeography; Bryophytes; Diversity; Mindoro; Mosses; The Philippines.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/525299

The distribution and diversity of whales and dolphins (Cetacea) in the southern North Sea: 1970-2005
Provedor de dados: 16
Autores: Meij, S.E.T. van der; Camphuysen, C.J.
Between 1970 and 2005 sightings data of cetaceans in the southern North Sea were collected as part of the Marine Mammal Database of the Dutch Seabird Group. The data include incidental sightings and reports as well as results from systematic surveys and seawatching data. They are therefore difficult to correct for fluctuations in observer effort. The material was evaluated firstly to see which species occur in Dutch waters and, secondly, to see if any spatial and temporal trends in abundance can be observed. In this study the harbour porpoise (Phocoena phocoena) is excluded from the analysis, except in the discussion, where the results are put into context with data about strandings and overall abundance. The status of the 17 different species that have...
Tipo: Article / Letter to the editor
Palavras-chave: Whales; Dolphins; Cetecea; Balaenoptera; Megaptera; Physeter; Hyperoodon; Mesoplodon; Globicephala; Tursiops; Lagenorhynchus; Delphinus; Stenella; Grampus; Sightings; The Netherlands; North Sea; Status; Distribution; Diversity; 42.84; 42.65; 42.94.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/431764

Fauna and stratification of male orchid bees (Hymenoptera: Apidae) and their preference for odor baits in a forest fragment
Provedor de dados: 82
Autores: Ferreira,MG; Pinho,OC de; Balestieri,JBP; Faccenda,O.
This is a study of the population fluctuation of euglossine species, as well as their preferences for scent baits (cineole, eugenol, vanillin and methyl salicylate) in two forest strata (canopy and understory) at the Reserva Florestal do Azulão, a forest fragment located in the municipality of Dourados, MS, Brazil (22°12'S, 54°55'W). We collected a total of 529 males from four genera and eight species. Diversity and equitability for both strata (understory: H' = 1.195 and J' = 0.6139; canopy: H' = 1.193 and J' = 0.6131) did not show a significant difference and a high similarity index was found (P = 87.5%). On the other hand, abundance was substantially higher in the canopy (n = 358) than in the understory (n = 171). From the scents used, eugenol attracted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Equitability; Floral reward; Richness; Seasonality.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000600002

Convergence in the variation of local and regional galling species richness
Provedor de dados: 82
Autores: Carneiro,Marco A.A.; Fernandes,G.W.; De Souza,O.F.F.
We investigate the local and regional determinants of galling insect richness on the dioecious shrub Baccharis concinna Barroso (Asteraceae) in the southeastern portion of the Espinhaço Mountains in Brazil. The total number of galling species and the richness of galling Cecidomyiidae (Diptera) were influenced by plant gender. Male plants supported a higher richness of galling insects than female plants, supporting the hypothesis of sex-biased herbivory at the community level. The total number of galling species and the richness of galling cecidomyiids showed a peak at intermediate altitudes. The richness of all galling species and galling cecidomyiids were strongly influenced by habitat. Plants in xeric habitats supported more galling species than plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Altitudinal gradient; Baccharis concinna; Diversity; Ecological community; Herbivore.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000400003

Sazonalidade e uso de ambientes por espécies de Tabanidae (Diptera) na Amazônia Central, Brasil
Provedor de dados: 82
Autores: Ferreira-Keppler,Ruth L; Rafael,José A; Guerrero,José C H.
Adults of Tabanidae may become serious pests wherever they occur due to their attack to humans and others animals. Tabanids were captured near ground, water surface and at 25 m high on primary forests and forest gaps of anthropogenic origin, to understand their abundance, seasonality, diversity and similarity on such environments. Collections were carried out in the Base II of the War Instruction Center in the Jungle (CIGS) located at 54 km from Manaus municipality, Amazonas state. Two Malaise flight interception traps and four attraction traps (two suspended at 25 m high and two above the water surface of igarapé) were installed in forest gap and primary forest, areas for 10 consecutive days, during 15 months. A total of 2,643 specimens of 66 species were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clearing and forest; Diversity; Fly interception trap.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400028

Thrips species (Thysanoptera) collected at Parque Estadual de Itapuã, Viamão, RS, Brazil
Provedor de dados: 82
Autores: Pinent,Silvia M.J.; Romanowski,Helena P.; Redaelli,Luiza R.; Mound,Laurence A.
The order Thysanoptera comprises mostly phytophagous or fungivorous species, with a few species that are predators. Recent studies have emphasized the diversity of behavioural patterns amongst these diminutive insects. From the 5,500 species known worldwide, about 10% are recorded from Brazil, mostly tropical areas. In this work we surveyed the Thysanoptera fauna of a southern locality, 800 km south of the Tropic of Capricorn. The study site was ''Parque Estadual de Itapuã'' (30°22'S 51°02'W), Viamão, RS, and thrips were sampled from wild flowers, branches, grass and litter, from June 1999 to May 2001. A total of 83 species in 32 genera was found, but only 29 of these species could be identified, emphasizing the poor knowledge of the insect fauna of...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Insecta; Thysanopterofauna; Diversity.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000400012

Staphylinidae (Coleoptera) Associated to Cattle Dung in Campo Grande, MS, Brazil
Provedor de dados: 82
Autores: KOLLER,WILSON W.; GOMES,ALBERTO; RODRIGUES,SÉRGIO R.; MENDES,JÚLIO.
This work was carried out in order to determinate the local fimiculous Staphylinidae species due to these predators and or parasites importance on the natural control of the dung associated bovine parasites. For that, fecal masses 1, 2 and 3 days old were weekly collected on a pasture of Brachiaria decumbens Stapf, from May 1990 through April 1992. The feces were conditioned in 15-liter opaque plastic buckets, containing lateral and top openings, where flasks were fastened for capturing Staphylinidae beetles present in these masses, during a 40-day period. After this period the soil and fecal masses from the buckets were examined and the remaining insects collected. A total of 13215 specimens were collected, belonging to 34 species. The following twelve...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Dung beetle; Pasture; Diversity.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000400019

Abundance and species richness of Coreoidea (Hemiptera: Heteroptera) from Parque Estadual do Turvo, Southern Brazil
Provedor de dados: 82
Autores: Barcellos,Aline; Schmidt,Letícia S.; Brailovsky,Harry.
The coreoid fauna from Neotropics is poorly known, especially in terms of community studies. Aiming at contributing to this knowledge, a two-year study was carried out at Parque Estadual do Turvo, Municipality of Derrubadas, state of Rio Grande do Sul, Brazil, to evaluate the composition, abundance and species richness of Coreoidea. Samplings were conducted in the springs of 2003 and 2004 (October), and autumns of 2004 and 2005 (May), using beating tray method, along two trails of the park. Sampling effort (hours X collectors) totaled 153h. A total of 282 individuals of Coreoidea were collected, distributed in 28 species of Alydidae, Coreidae and Rhopalidae. The most abundant species was the coreid Cebrenis supina Brailovsky, representing 16% of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alydidae; Coreidae; Rhopalidae; Diversity; Survey.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000400008

An improved bait method for collecting hymenoptera, especially social wasps (Vespidae: Polistinae)
Provedor de dados: 82
Autores: Noll,Fernando B; Gomes,Bruno.
In this work, an alternative method for the capture of neotropical social wasps is described, which may supplement or replace the procedures commonly used in wasp surveys. The method was tested in a seasonal semideciduous forest in the northwest of São Paulo State, collecting a larger number of species and a greater abundance of social wasps and of other Hymenoptera than other methods also used in the same area, namely Malaise traps, bottle traps and meat baits. The proposed method was adapted from Wille (1962) who used an attractive solution based on water and honey for bee attraction. In here, the attractive solution was based on water, salt and crystal sugar, and was effective in attracting bees and solitary wasps, but mainly social wasps, which is the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Epiponini; Survey; Semidecidual seasonal forest.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000400006

Dung beetle communities: a neotropical-north temperate comparison
Provedor de dados: 82
Autores: Radtke,Meghan G; Fonseca,Cláudio R V da; Williamson,G Bruce.
Dung beetle communities have been compared across north temperate latitudes. Tropical dung beetle communities appear to be more diverse based on studies using different methodologies. Here, we present results from a standardized sampling protocol used to compare dung beetle communities across five neotropical forests in Brazil and Ecuador and two warm, north temperate forests in Mississippi and Louisiana. Species richness in the tropical forests was three to seven times higher than the temperate forests, as would be expected by studies of other taxa across tropical and temperate latitudes. Average body size in the temperate forests was larger than the tropical forests, as predicted by Bergmann's rule. Dung beetle abundance and volume per trap-day were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Diversity; Scarabaeidae; Temperate forest; Tropical forest.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000100004

Coleoptera associated with undisturbed cow pats in pastures in Southeastern Brazil
Provedor de dados: 82
Autores: Mendes,Júlio; Linhares,Arício X.
Coleoptera associated to undisturbed cattle droppings in pastures present great diversity and abundance. Several species are of primary veterinary importance for they may act as natural enemies of pest insects that breed in this habitat. To survey the diversity and abundance of Coleoptera associated to undisturbed cattle droppings, four undisturbed cattle dung pats naturally dropped in pastures and 5 cm of the soil immediately beneath them were collected almost all weekly from april 1992 to april 1994 in a farm located in the vicinity of São Carlos, State of São Paulo, Southeastern Brazil. Beetles were collected from the pats both using Berlese funnels and by allowing the beetles to emerge for 30 to 40 days. A total of 24,332 specimens belonging to 13...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle dung; Dung beetle; Diversity; Biological control.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000600001

Faunistic analysis of Anastrepha spp. (Diptera: Tephritidae) on a guava orchard under organic management in the municipality of Una, Bahia, Brazil
Provedor de dados: 82
Autores: Dutra,Vivian S; Santos,Mírian S; Souza Filho,Zilton A; Araujo,Elton L; Silva,Janisete G.
We carried out a study to characterize fruit fly populations on an organic guava orchard (Psidium guajava cv. Paluma) in the municipality of Una, southern region of the state of Bahia, Brazil, using faunistic analysis of the adult fruit fly specimens captured in McPhail traps from January 2004 through March 2007. A total of 22,673 specimens of Anastrepha (15,306 females and 7,367 males) were captured. Thirteen species of Anastrepha were recorded. A. fraterculus and A. obliqua were the more frequent and dominant species, accounting for 90.1% of all females captured in the traps. A. fraterculus was the predominant species (more frequent, constant and dominant). The high value of the Simpson index (0.62) and the low values of Shannon-Wiener (0.83) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Fruit fly; Diversity; McPhail trap; Organic fruit crop.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000100015

Changes in Brazilian Drosophilidae (Diptera) assemblages across an urbanisation gradient
Provedor de dados: 82
Autores: Gottschalk,Marco S.; De Toni,Daniela C.; Valente,Vera L.S.; Hofmann,Paulo R.P.
The present study aims to characterise the assemblages of Drosophilidae sampled from four sites subject to different levels of urbanisation, in the city of Florianópolis, South Brazil. Five samples were collected between August 2000 and August 2001 and five between August 2002 and August 2003 in each site. A gradual change in the dominant species was observed in the urbanisation gradient, with an increase in relative abundance of exotic species in urban areas. Among the native species, the relative abundance of Drosophila capricorni Dobzhansky &amp;amp; Pavan had an expressive decrease. In the other hand the richness in the low urbanisation site increased, probably due to the presence of urban gardens. The diversity index did not vary significantly among...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Zaprionus; Ecology; Diversity; Richness.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000600005

Coleópteros necrófilos (Scarabaeidae, Silphidae y Trogidae) de Malinalco, Estado de México, México
Provedor de dados: 82
Autores: Trevilla-Rebollar,Antonio; Deloya,Cuauhtémoc; Padilla-Ramírez,Jorge.
Collections were made during one year, between August 2005 and July 2006, in Malinalco, State of Mexico, in three sites of tropical deciduous forest, a pasture and a induced forest of pine-oak, established in a altitudinal gradient ranging from 1,253 m to 2,300 m. The total of 7,680 specimens Scarabaeidae, Silphidae and Trogidae were captured through NTP-80, representing 18 genera and 38 species. Onthophagus and Canthon contained 46% of the richness of Scarabaeidae. The more distant sites were complementary in their species composition. The lowest complementarity occurred between sites with tropical deciduous forest. It revises the material collected through pitffal traps and light traps funnel type, increasing the list of 38 to 50 species in the study...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Complementarity; Faunistic similarity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400005

A new species of Microglanis (Siluriformes: Pseudopimelodidae) from the Pacific slope of Ecuador
Provedor de dados: 83
Autores: Tobes,Ibon; Falconí-López,Ana; Valdiviezo-Rivera,Jonathan; Provenzano-Rizzi,Francisco.
ABSTRACT A new species of catfish is described from the Esmeraldas River Basin, Pacific slope, northern Ecuador. Tentatively included in Microglanis, represents the second species of the genus inhabiting the Trans-Andean region. The new species is distinguished from known congeners by a unique combination of external characteristics: head and body color pattern, uniform, pale brown, yellowish or grayish, without any kind of blotches, bands or dots, only a lunate transverse band, dark or black, at caudal-fin origin; adipose-fin origin and forward without lighter or luminous areas. Compared with M. variegatus, the new species has morphometric differences, such as the distances between dorsal and pelvic fins, and between posterior nostrils. Some osteological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Richness; Systematic; Taxonomy; Trans-Andean region.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000200211

Seasonal and longitudinal variation in fish assemblage structure along an unregulated stretch of the Middle Uruguay River
Provedor de dados: 83
Autores: Massaro,Marthoni Vinicius; Pachla,Lucas Adriano; Bastian,Rodrigo; Pelicice,Fernando Mayer; Reynalte-Tataje,David Augusto.
ABSTRACT Diversity patterns and their causes remain important questions, especially for ecosystems that preserve natural conditions. This is the case of fish diversity in large Neotropical rivers. In this context, we investigated fish diversity patterns along an extensive unregulated river section (ca. 450 km) in the Middle Uruguay River Basin. Sampling was conducted seasonally between May 2017 and March 2018, at six sites (patches) with contrasting environmental conditions. We collected 3,008 individuals belonging to 90 species. Nine were migratory, which summed relevant biomass in local assemblages (20 to 60%). We observed spatial variation in assemblage structure, but weak seasonal effects. Overall, biomass was similar among sites, but richness tended...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Floodplain; Migratory fish; Riparian vegetation; River channel.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000500210

New species of the Corumbataia cuestae group (Siluriformes: Loricariidae) from the Rio Tocantins basin, with comments on its phylogenetic relationships
Provedor de dados: 83
Autores: Thimotheo,Mateus Giovanni Rocha; Benine,Ricardo Cardoso; Oliveira,Claudio; Silva,Gabriel de Souza da Costa e.
Abstract A new species of Corumbataia is described from Rio Maranhão, Rio Tocantins basin, central Brazil. The new species is distinguished from all congeners by the presence of a small, naked area on snout tip; by having the abdomen covered with small platelets forming a shield which reaches the lateral mid-ventral plates; by the anterior profile of the head rounded in dorsal view; by the lower lip not reaching the transversal line of the pectoral girdle; and by the presence of 28 or 29 vertebrae. High genetic divergence in mitochondrial cytochrome c oxidase subunit I (COI) further supports the validity of this new species. Our phylogenetic analysis shows a derived subclade in Corumbataia, herein named as the Corumbataia cuestae group, composed of the new...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytochrome C Oxidase; Diversity; Freshwater fishes; Hypoptopomatinae; Central Brazil.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000400207

Patterns in fish species composition and assemblage structure in the upper Salado River lakes, Pampa Plain, Argentina
Provedor de dados: 83
Autores: Rosso,Juan José; Quirós,Rolando.
The Pampa Plain, in the central region of Argentina, is mostly drained by the Salado River. The fish fauna of this river is mostly known from field collections in lower reach lakes. Consequently, we aimed to explore the composition and structure of the fish assemblages in the upper Salado River lakes. Patterns in dominance and persistence of species and assemblage level attributes were correlated with environmental and human activity-derived (NO3:NH4) variables. Overall, 19,913 individuals of 17 species included in 5 orders and 11 families were collected. Several species are first records for the upper Salado River lakes. There was a marked proliferation of species in the family Characidae. Conversely, the remainder 10 families were only represented by one...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental gradients; Persistence; Dominance; Diversity; Regional biogeography.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100016

Evidence for the true type-locality of Rhamdia quelen (Siluriformes: Heptapteridae), and the geographical origin and invalid neotype designation of four of its synonyms
Provedor de dados: 83
Autores: Koerber,Stefan; Reis,Roberto E.
ABSTRACT Historical information on the probable type-locality of Pimelodus quelen and of its four junior synonyms that share the same neotype, Pimelodus namdia, Pimelodus sebae, Heterobranchus sextentaculatus, and Silurus rivularis, is presented and discussed. The neotype designation for those four species is deemed invalid for not complying with the provisions of the International Code of Zoological Nomenclature, making it technically possible to revalidate any of the four taxa from the synonymy of Rhamdia quelen without having to address the International Commission of Zoological Nomenclature. The type-locality of both Curimata gilbert and Callichthys asper are also restricted to rio Macacu at the village of Japuíba, State of Rio de Janeiro, Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catfish; Diversity; Nomenclature; Synonymy; Taxonomy.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100215

Riffle and pool fish communities in a large stream of southeastern Brazil
Provedor de dados: 83
Autores: Langeani,Francisco; Casatti,Lilian; Gameiro,Helena Seixas; Carmo,André Bellucco do; Rossa-Feres,Denise de Cerqueira.
The structure of the fish communities of a pool and a rapid in the ribeirão Santa Bárbara is described. This stream of 5th order is a direct tributary of the rio Tietê in the system of the upper rio Paraná. Thirty three species, from nine families and three orders, were referred in the two mesohabitats: the pool with 31 species, and the rapid with 18. Orders Characiformes, Siluriformes, and Perciformes presented the greatest number of species in the two mesohabitats. The families Characidae and Loricariidae were the most specious, followed by Cichlidae in the pool, and by Parodontidae in the rapid. Most species were accidental, 17 in the pool, and 10 in the rapid, and only six were constant in the two mesohabitats. The greatest diversity and evenness...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seasonality; Spatial distribution; Upper rio Paraná system; Niche breadth; Diversity; Adventitious streams.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000200009

A new species of whiptail armored catfish, genus Pseudohemiodon (Siluriformes: Loricariidae) from the Orinoco River basin, Llanos region of Colombia and Venezuela
Provedor de dados: 83
Autores: Rojas-Molina,Yecid Andrey; Provenzano-Rizzi,Francisco; Ramírez-Gil,Hernando.
ABSTRACT A new species of whiptail armored catfish belonging to the genus Pseudohemiodon is described. The new species inhabits aquatic systems of the Orinoco River basin, mostly in the Llanos region of Colombia and Venezuela. Previously, it had identified as P. laticeps erroneously. The genus Pseudohemiodon includes seven known species inhabit Amazon and Paraná-Paraguay-Uruguay rivers basins. The new species is distinguished from congeners by the combination of the following characters: abdomen totally covered; area in front of gill opening without plates, ventrally; dorsal body color pattern without transversal dark bands, mostly in the caudal peduncle; head with straight sides; head and caudal peduncle narrower.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Freshwater fishes; South America; Systematic; Taxonomy.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000200213

Spatial and seasonal patterns in fish assemblage in Córrego Rico, upper Paraná River basin
Provedor de dados: 83
Autores: Takahashi,Erico L. H; Rosa,Fabricio R. T.; Langeani,Francisco; Nakaghi,Laura S. O.
The upper Paraná River basin drains areas of intensive industry and agriculture, suffering negative impacts. The Córrego Rico flows through sugar cane fields and receives urban wastewater. The aim of this work is to describe and to compare the fish assemblage structure in Córrego Rico. Six standardized bimonthly samples were collected between August 2008 and June 2009 in seven different stretches of Córrego Rico. Fishes were collected with an experimental seine and sieves, euthanized, fixed in formalin and preserved in ethanol for counting and identification. Data were recorded for water parameters, instream habitat and riparian features within each stretch. Non-metric multidimensional scaling, species richness and diversity analysis were performed to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dam effects; Diversity; Ecology; Mogi Guaçu River.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100143

Size spectra, body width and morphotypes of intertidal nematodes: an ecological interpretation
Provedor de dados: 27
Autores: Tita, G.; Vincx, M.; Desrosiers, G.
Nematode species from three intertidal assemblages (St Lawrence Estuary, Quebec, Canada) were studied in order to form an ecological interpretation of three allometric attributes: body width, size spectra, and morphotypes. The three assemblages were characterized by a very similar sediment grain median (Md) but different silt-clay proportions: A1 (upper-tidal level; Md=122 µm; silt=34.8%), A3 (mid-tidal level; Md=182 µm; silt=12.8%), and A5 (lower-tidal level; Md=122 µm; silt=6.8%). Silt-clay proportions were an influential factor in determining the mean nematode body width, used as a morphological discriminant between burrowing and interstitial organisms. A plot of the number of species vs the body width-classes showed two peaks: between 19.3 and 22.6 µm...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Benthos; Biomass; Diversity; Meiobenthos; Transport.
Ano: 1999
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7340

Nematodes as indicators pollution: a case study from the Swartkops River system, South Africa
Provedor de dados: 27
Autores: Gyedu-Ababio, T.; Furstenberg, J.P.; Baird, D.J.; Vanreusel, A.
Nematodes from the sediments of the Swartkops estuary in Port Elizabeth, South Africa were investigated at 10 selected sites along a salinity gradient in the subtidal region at neap tide. The relation between nematode density, genera, community structure and environmental parameters including concentrations of seven heavy metals, Mn, Ti, Cr, Pb, Fe, Sn and Zn in the sediment were investigated. The nematode community structure was significantly influenced by the chlorophyll a concentration and sediment particle-size distribution. The number of genera had significant negative correlation with chlorophyll a and two heavy metals, Fe and Zn in the sediment. The habitat preferences of the genera were also assessed. A combination of the Shannon-Wiener Diversity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Check lists; Density; Diversity; Ecology; Meiobenthos; Pollution; Sediment; Sediments; Nematoda [Nematodes].
Ano: 1999
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7328

Análise faunística de gafanhotos na Floresta Nacional de Chapecó, Santa Catarina
Provedor de dados: 190
Autores: Lutinski, Cladis Juliana; Lutinski, Junir Antonio; Costa, Maria Katia Matiotti  da; Garcia, Flavio Roberto Mello.
Realizou-se a análise faunística de gafanhotos coletados em três constituições vegetais da Flona de Chapecó. Coletas semanais foram realizadas em áreas de eucalipto, mata nativa e pinus durante o período de dezembro de 2003 a dezembro de 2004. Utilizaram-se armadilhas do tipo “pitfall”, rede de varredura, guarda-chuva entomológico e “malaise”. A fauna encontrada nas diferentes áreas foi caracterizada por meio dos índices de abundância, constância, dominância e frequência. Dezoito espécies foram comuns para as três áreas. As espécies Staurorhectus logicornis logicornis, Cylindrotettix sp. e Ommexecha virens ocorreram apenas em eucaliptos e pínus, enquanto, Scotussa lemniscata e Zoniopoda tarsata ocorreram para eucaliptos e mata nativa enquanto Amblytropidia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecology; Diversity; Acridinae; Sustainable development Ecologia; Diversidade; Acridinae; Desenvolvimento sustentável.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/191

TRAP-NESTING BEES AND WASPS (HYMENOPTERA, ACULEATA) IN A SEMIDECIDUAL SEASONAL FOREST FRAGMENT, SOUTHERN BRAZIL
Provedor de dados: 84
Autores: OLIVEIRA,PRISCILA S.; GONÇALVES,RODRIGO B.
ABSTRACT Trap-nesting bee and wasp inventories are common in Brazil but many phytophysiognomies are still poorly studied. The main objective of this study is to survey trap-nesting bees and wasps in a Semidecidual Seasonal Forest fragment. Also, we test the differences on nesting between interior and edge transects. A sum of 1,500 trap nests was made with bamboo cane internodes and two consecutive years were monitored. In the first year 46 nests were occupied by Pachodynerus grandis (19 nests), Pachodynerus guadulpensis (19), Centris analis (two), and Centris tarsata, Megachile fiebrigi, Megachile guaranitica, Megachile susurrans, Trypoxylon sp and Zethus smithii with one nest each. No statistical differences were found between interior and edge transects...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apidae; Crabronidae; Diversity; Eumeninae; Nesting.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492017001300149

Coleopterous galls from the Neotropical region
Provedor de dados: 84
Autores: Maia,Valéria Cid.
Data on Neotropical coleopterous galls were compiled from the literature, which showed that 82 galls have so far been recorded among 77 plant species. The Fabaceae and Asteraceae plant families display the greatest richness in galls. Most galls are induced on stems or buds, while leaves constitute the second most attacked plant organ. Only 16 coleopteran gallers have been identified at the species level; most records are presented at the order level. The identified species belong to four families: Apionidae, Buprestidae, Curculionidae and Erirhinidae. The galls are found in Argentina, Brazil, Belize, Chile, Colombia (probably), Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama and Venezuela. Eighteen species of Coleoptera are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coleoptera; Diversity; Galler; Inquiline; Neotropics.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492012001500001

Structure of Drosophilidae Assemblage (Insecta, Diptera) in Pampa Biome (São Luiz Gonzaga, RS)
Provedor de dados: 84
Autores: Poppe,Jean Lucas; Valente,Vera Lúcia da Silva; Schmitz,Hermes José.
The Brazilian Pampa (the southernmost end of the country) is currently a highly modified environment because of increasing agricultural activities. In many places, only small parts of grasslands remain inside an agricultural landscape. Drosophilidae (Diptera) have been widely used as a potential bioindicators to monitor the effects of anthropogenic changes in natural environments. However, the fauna of Drosophilidae in the Pampa Biome from natural and disturbed environments, still remains largely unknown. The present study represents one of the first attempts to fill this gap, showing results from monthly collections in the municipality of São Luiz Gonzaga (28º24'28"S, 54º57'39"W), in the Brazilian Pampa. A species inventory was carried out in two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pampa Biome; Drosophilidae; Diversity; Bioindicator.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492012001600001

Seasonal fluctuation in the population of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) and co-occurrence with other Coccinellids in the Federal District of Brazil
Provedor de dados: 84
Autores: Harterreiten-Souza,Érica Sevilha; Togni,Pedro Henrique Brum; Milane,Paloma Virgínia Gambarra Nitão; Cavalcante,Kelly Ramalho; Medeiros,Maria Alice de; Pires,Carmen Silvia Soares; Sujii,Edison Ryoiti.
The multicolored Asian lady beetle, Harmonia axyridis (Pallas, 1773), was first recorded in Brazil in 2002 in Paraná state and subsequently observed in Santa Catarina, Rio Grande do Sul and Minas Gerais. This species can spread to new areas and become dominant in the local community, reducing the density and diversity of native species, mainly Coccinellidae. The objective of this work was to record for the first time the occurrence of H. axyridis in the Federal District and its co-occurrence with other Coccinellidae species. The individuals were collected directly from plants at an organic farm in Taguatinga and in experimental fields of Embrapa Hortaliças, located in the Federal District, from August 2008 to January 2010. We collected 881 Coccinelids, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological Control; Diversity; Exotic species; Invasion; Predator.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492012001100001

First standardized inventory of ants (Hymenoptera: Formicidae) in the natural grasslands of Paraná: New records for Southern Brazil
Provedor de dados: 84
Autores: Franco,Weslly; Feitosa,Rodrigo Machado.
Abstract Despite the large number of studies investigating ant diversity in Brazilian biomes, no ant-related studies have been carried out in Campos Gerais, a grassland physiognomy in Paraná state. The present study is the first inventory of the ant fauna in one of the few conservation units protecting the Campos Gerais landscape, the Guartelá State Park (PEG). Sixty samples were collected from different habitats within PEG using pitfall traps. Qualitative samples of leaf litter were collected from forest fragments and submitted to Winkler extractors. In addition, manual qualitative sampling was carried out in the various physiognomies within the PEG. A total of 163 species was collected and sorted into 43 genera and nine subfamilies. Five genera and 28...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Survey; Campos Gerais; Distribution; Taxonomic Novelties; Conservation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100211

Annotated checklist of the millipede family Chelodesmidae Cook, 1895 from São Paulo state, Brazil (Diplopoda: Polydesmida)
Provedor de dados: 84
Autores: Bouzan,Rodrigo Salvador; Iniesta,Luiz Felipe Moretti; Pena-Barbosa,João Paulo Peixoto; Brescovit,Antonio Domingos.
Abstract A checklist of the family Chelodesmidae Cook, 1895 (order Polydesmida) from state of São Paulo, Brazil has been performed based on literature and examined material from the collection of the Instituto Butantan, São Paulo (IBSP). A total of 15 genera (7 tribes and 5 genera considered incertae sedis) with 64 species are listed. Among these species, 30 presented a single one record in the state, 19 with more than one record and four recorded for the first time for the state of São Paulo, and 11 species occurring in other Brazilian states. The most distributed species is Brasilodesmus paulistus paulistus (Brölemann, 1902) with 52 records of occurrence. In addition, a complete bibliography list of the chelodesmidan fauna from the state is compiled, as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical; Chelodesminae; Diversity; Atlantic forest; Cerrado.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100205

What do we know about Neotropical trap-nesting bees? Synopsis about their nest biology and taxonomy
Provedor de dados: 84
Autores: Costa,Camila Cristina Ferreira da; Gonçalves,Rodrigo Barbosa.
Abstract Cavity-nesting bees are enigmatic because they are difficult to observe in the wild, hence trap-nests (man-made cavities) provide the means by which these bees may be studied. Trap-nests is an efficient methodology to study these bees and are common worldwide. These traps have been used for a variety of reasons, including inventories, to examine pollen load, to study habitat disturbance, and bee conservation. However Neotropical trap-nesting bees’ taxonomy and biology are still poorly known and here we provide a review about these subjects. We searched for trap-nest bee studies in the Neotropical Region using Google Scholar and ISI Web of Science at any time in the past to December 2017. We found 109 independent studies, most of which were from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bee hotels; Diversity; Methodology; Nesting behavior; Systematics.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100226

The Herpetofauna from Ilha Grande (Angra dos Reis, Rio de Janeiro, Brazil): updating species composition, richness, distribution and endemisms
Provedor de dados: 84
Autores: Rocha,Carlos Frederico Duarte; Telles,Felipe Bottona da Silva; Vrcibradic,Davor; Nogueira-Costa,Paulo.
Abstract Ilha Grande is a large continental island (total area of 19,300 ha) situated at the southern coast of the state of Rio de Janeiro, in southeast Brazil, within the Atlantic Forest Biome. Here we provide an update to the previous knowledge of the fauna of amphibians and reptiles occurring in Ilha Grande, based on primary data from our own fieldwork and on secondary data (from institutional collections and from the literature). We report the occurrence at Ilha Grande of a total of 74 species, being 34 amphibians (all of them anurans) and 40 reptiles (27 snakes, 11 lizards, one amphisbaenian and one crocodylian). Our survey added 14 species to the herpetofaunal list of Ilha Grande (three of amphibians and eleven of reptiles) and removed one species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anura; Reptile; Atlantic Rain Forest; Diversity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100224

Richness of hymenopterous galls from South America
Provedor de dados: 84
Autores: Maia,Valéria Cid.
An overview of hymenopterous galls from South America is presented here based on literature as well as on data from the insect gall collection of the Museu Nacional/UFRJ. Seventy-three galls have been recorded on 71 host plants. Myrtaceae and Fabaceae are the plant families with the greatest number of galled species and gall morphotypes. Gall richness per plant species varied from one to two. The stem and bud were the most galled plant organs. The gallers comprise eight hymenopteran families, the best-represented being Eulophidae, Eurytomidae, and Cynipidae. Geographic records are restricted to six countries, and the majority is from Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Geographical distribution; Insect plant interaction.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492012021500001

Earthworm communities in organic and conventional coffee cultivation
Provedor de dados: 86
Autores: Bartz,Marie Luise Carolina; Brown,George Gardner; Pasini,Amarildo; Fernandes,Juliana de Oliveira; Curmi,Pierre; Dorioz,Julie; Ralisch,Ricardo.
The objective of this work was to evaluate the effect of organic and conventional coffee crops on biomass, population density and diversity of earthworms, in Lerroville, district of Londrina County, Paraná state, Brazil. Earthworm communities were sampled in three areas with organic coffee cultivation (CO1, CO2 and CO3), two with conventional coffee (CC1 and CC2), and a native forest fragment (MT). The soil of the areas CO1, CC1, and MT was classified as Nitossolo Vermelho (Rhodic Kandiudox), while CO2, CO3, and CC2 were on Latossolo Vermelho (Rhodic Hapludox). Eight samples were taken in each area on two occasions, winter and summer, using the Tropical Soil Biology and Fertility (TSBF) method in the 0-20 cm soil layer. The earthworms were handsorted and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass; Conventional cultivation; Diversity; Oligochaeta; Organic cultivation; Population density.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800019

Faunistic analysis of Carabidae and Staphylinidae (Coleoptera) in five agroecosystems in northeastern São Paulo state, Brazil
Provedor de dados: 86
Autores: Cividanes,Francisco Jorge; Barbosa,José Carlos; Ide,Sérgio; Perioto,Nelson Wanderlei; Lara,Rogéria Inês Rosa.
The objective of this study was to determined species composition and community structure of Carabidae and Staphylinidae in five areas of forest fragment and soybean/corn crops or orange orchard, from December 2004 to May 2007. Beetles were captured in pitfall traps distributed along two parallel transects of 200 m in length, placed across crop land/forest boundary fragment, with 100 m each. The Shannon-Wiener diversity and evenness indexes and Morisita similarity index were calculated. The carabids Abaris basistriatus Chaudoir, Calosoma granulatum Perty, Megacephala brasiliensis Kirby, Odontochila nodicornis (Dejean) and Selenophorus seriatoporus Putzeys. are dominant and are widely distributed in northeastern São Paulo state, Brazil. Point-scale species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; Glycine max; Zea mays; Diversity; No-tillage; Similarity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800023

Seed biometric parameters in oil palm accessions from a Brazilian germplasm bank
Provedor de dados: 86
Autores: Camillo,Julcéia; Braga,Valentine Carpes; Mattos,Jean Kleber de Abreu; Lopes,Ricardo; Cunha,Raimundo Nonato Vieira da; Padilha,Joseane; Scherwinski-Pereira,Jonny Everson.
The objective of this work was to evaluate the morphological diversity of oil palm seeds and to cluster the accessions according to their morphological characteristics. Forty-one accessions from the oil palm germplasm bank of Embrapa Amazônia Ocidental were evaluated - 18 of Elaeis oleifera and 23 of E. guineensis. The groups were formed based on morphological characteristics, by principal component analysis. In E. oleifera, four groups were formed, tied to their region of origin, but with significant morphological differences between accessions from the same population. For tenera-type E. guineensis seeds, three widely divergent groups were formed, especially as to external parameters, which differentiated them from the other ones. The parameter endocarp...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elaeis guineenses; Elaeis oleífera; American oil palm; Diversity; Dura; Tenera.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000800604

Variability of nodulation traits in Andean and Mesoamerican common bean gene pools
Provedor de dados: 86
Autores: Knupp,Adriano Moreira; Ferreira,Enderson Petrônio de Brito; Araújo,Adelson Paulo.
Abstract: The objective of this work was to evaluate the genotypic diversity for nodulation in common bean (Phaseolus vulgaris) genotypes of Andean and Mesoamerican gene pools present in the core collections of Embrapa, in Brazil. Evaluations were carried out in two stages: the first one with 879 genotypes, taking the cultivar 'Ouro Negro' as reference; and the second one with 116 genotypes with greater nodulation, to identify those showing stability in nodulation in the two stages. Rhizobium strains were inoculated in pre-germinated common bean seed. Plants received weekly a nutrient solution without N, and nodulation was evaluated 35 days after planting. The percentage of genotypes that exceeded the reference cultivar was 22% for number of nodules, 46%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Biological nitrogen fixation; Diversity; Germplasm bank.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000400252

Phytosociological surveys: tools for weed science?
Provedor de dados: 87
Autores: Concenço,G.; Tomazi,M.; Correia,I.V.T.; Santos,S.A.; Galon,L.
In simple terms, a phytosociological survey is a group of ecological evaluation methods whose aim is to provide a comprehensive overview of both the composition and distribution of plant species in a given plant community. To understand the applicability of phytosociological surveys for weed science, as well as their validity, their ecological basis should be understood and the most suitable ones need to be chosen, because cultivated fields present a relatively distinct group of selecting factors when compared to natural plant communities. For weed science, the following sequence of steps is proposed as the most suitable: (1) overall infestation; (2) phytosociological tables/graphs; (3) intra-characterization by diversity; (4) inter-characterization and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed community; Density; Frequency; Dominance; Diversity; Similarity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200025

BANK OF WEED SEEDS IN AGROSYSTEMS IN THE BRAZILIAN CERRADO
Provedor de dados: 87
Autores: CARDOSO,I.S.; SOARES,M.P.; ARAÚJO,V.T.; CABRAL,P.H.R.; JAKELAITIS,A.; MADALÃO,J.C.
ABSTRACT The seed bank is the reserve of viable seeds found in the soil and is related to diversity and abundance of species that make up the weed populations. This study aimed to determine the seed bank in four distinct environments (grazing area, area of vegetables, annual crop area and perennial crop area) in two seasons (rainy and dry season). To determine the seed bank, each environment was divided into four sub-areas of 0.2 hectares, considering that each area was a repetition, totaling 16 experimental units. Samples of 0.8 kg were taken from each area, and each sample was distributed on a plastic tray and allowed to germinate in a greenhouse. The density of the individuals was determined by observing the number of emerging seedlings in the trays,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rainy season; Dry season; Shannon index; Relative importance; Diversity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300443

Weed Diversity in Corn with Different Plant Arrangement Patterns Grown Alone and Intercropped with Palisade Grass
Provedor de dados: 87
Autores: MELO,T.S.; MAKINO,P.A.; CECCON,G.
ABSTRACT: Composition and level of weed infestation interfere with crop yield and increase production costs. This study aimed to identify weed composition and infestation in corn grown with different plant populations, single, and intercropped with palisade grass. The phytosociological method was used to evaluate density, frequency, dominance, and infestation level of weeds in single and intercropped corn, a with conventional (0.90 m) and reduced (0.45 m) spacing, and low and high plant population in Dourados, MS, Brazil. Commelina benghalensis, Echinochloaspp., and Euphorbia heterophylla were the species most found in the treatments. Single corn with higher plant population decreased weed occurrence. Treatments with palisade grass under a reduced spacing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Urochloa; Plant population; Phytosociology; Diversity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100199

Phytosociological Survey of Sugarcane Crop Weeds in Different Agroecological Areas in Tucumán Province, Argentina
Provedor de dados: 87
Autores: CABRERA,D.C.; CHAILA,S.; SOBRERO,M.T.; VARELA,A.E.
ABSTRACT: Weeds constitute the main constraint on the productivity of sugarcane agroecosystems in Argentina. This work aimed to analyze the floristic and phytosociological composition of sugarcane weed communities in different agroecological areas in Tucumán. Fifteen plots from each area were sampled 60 to 90 days after crop shooting, by throwing a 0.5 m x 0.5 m quadrat metallic frame six times in random directions in each of the plots. Species found within the frame were identified. Later, fresh and dry biomass weight were calculated per quadrat sample and species. Frequency, density, dominance, importance value index, Shannon-Wiener and Simpson species diversity index and Jaccard similarity index were calculated. The unweighted pair group method with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sacharum officinarum L.; Importance value index; Diversity; Similarity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100226

Diversity, Globalisation and Market Stability
Provedor de dados: 31
Autores: Lasselle,   Laurence; Svizzero,   Serge; Tisdell,   Clement A.
Tipo: Working or Discussion Paper
Palavras-chave: Diversity; Globalisation; Heterogeneity of Behaviour; Instability; Environmental Economics and Policy; Financial Economics.
Ano: 2001
URL: http://purl.umn.edu/90501

DIVERSIFICAÇÃO DE ATIVIDADES NA PRODUÇÃO FAMILIAR NO PROJETO DE ASSENTAMENTO COLIBRI NO ACRE
Provedor de dados: 31
Autores: Ferreira,   Almecina Balbino; Oliveira,   Tadario Kamel; Sa,   Claudenor Pinho De.
O objetivo deste trabalho foi analisar a diversificação de atividades agrícolas na produção familiar do Projeto de Assentamento Colibri (P.A), no Acre. A primeira fase foi levantamento de campo, por meio da aplicação de questionário geral semi – estruturado, quando foram entrevistados aleatoriamente 44 (quarenta e quatro famílias) das 66 que residem no P.A, para a caracterização dos sistemas de produção agrícola.  A segunda fase foi aplicação de questionário para avaliação da porcentagem de renda bruta anual por produto em cada propriedade. Para tanto foram selecionados, aleatoriamente, 20 estabelecimentos. Em 10 estabelecimentos foi registrada a porcentagem de renda obtida por meio do consumo familiar, além do comercializado. A partir da porcentagem de...
Tipo: Conference Paper or Presentation
Palavras-chave: Diversidade; Produção agrícola; Tipologia; Renda e agricultura familiar; Diversity; Agricultural Production; Tipologia; Income and familiar Agriculture; Farm Management.
Ano: 2008
URL: http://purl.umn.edu/108826

Diversity of Communities and Economic Development: An Overview
Provedor de dados: 31
Autores: Ranis,   Gustav.
This paper reviews the literature on the impact of ethnic diversity on economic development. Ethnically polarized societies are less likely to agree on the provision of public goods and more likely to engage in rent seeking activities  providing lower levels of social capital. Initial conditions are important determinants of adverse development outcomes.  The role of decentralization, democracy and markets as potential remedies are discussed.  The paper then presents a number of preliminary hypotheses on the relationship between diversity and instability in order to stimulate future research.
Tipo: Working or Discussion Paper
Palavras-chave: Africa; Diversity; Economic Growth; Instability; Institutional and Behavioral Economics; International Development; Political Economy; O11; O40; O43; O55.
Ano: 2011
URL: http://purl.umn.edu/115713

Determinants of Rice Variety Diversity on Household Farms in the Terai Region of Nepal
Provedor de dados: 31
Autores: Joshi,   Ganesh R.; Bauer,   Siegfried.
Crop genetic resources are the building block of sustainable agricultural development as these can be used to develop crop varieties adaptable to heterogeneous environmental conditions. Nepal is considered the center of origin and diversity for Asian rice, which still has many landraces. However, there has been continuous loss of genetic diversity and concern over it has grown in recent years. The main objective of this paper is to identify the determinants of variety diversity on-farm in the rainfed ecosystem of Nepal by using two-limit Tobit procedure. The diversity on farm appeared to be quite high evaluated based on the number of named varieties grown by the farmers. Majority of the farmers cultivated both modern varieties and landraces simultaneously...
Tipo: Conference Paper or Presentation
Palavras-chave: Diversity; Market; Nepal; Rice; Variety; Crop Production/Industries.
Ano: 2006
URL: http://purl.umn.edu/25422

Diversity of Communities and Economic Development: An Overview
Provedor de dados: 31
Autores: Ranis,   Gustav.
This paper reviews the literature on the impact of ethnic diversity on economic development. Ethnically polarized societies are less likely to agree on the provision of public goods and more likely to engage in rent seeking activities  providing lower levels of social capital. Initial conditions are important determinants of adverse development outcomes.  The role of decentralization, democracy and markets as potential remedies are discussed.  The paper then presents a number of preliminary hypotheses on the relationship between diversity and instability in order to stimulate future research.
Tipo: Working or Discussion Paper
Palavras-chave: Africa; Diversity; Economic Growth; Instability; International Development; O11; O40; O43; O55.
Ano: 2009
URL: http://purl.umn.edu/54531

Horizontal and vertical tree community structure in a lowland atlantic rain forest, southeastern Brazil
Provedor de dados: 88
Autores: Guilherme,Frederico Augusto G.; Morellato,L. Patrícia C.; Assis,Marco A.
The horizontal and vertical tree community structure in a lowland Atlantic Rain Forest was investigated through a phytosociological survey in two 0.99 ha plots in the Intervales State Park, São Paulo State. All trees &gt; 5 cm diameter at breast height were recorded. 3,078 individuals belonging to 172 species were identified and recorded. The Shannon diversity index was H' = 3.85 nat.ind.-1. The Myrtaceae family showed the greatest floristic richness (38 species) and the highest density (745 individuals) in the stand. Euterpe edulis Mart. had the highest importance value (33.98%) accounting for 21.8% of all individuals recorded. The quantitative similarity index was higher than the qualitative index, showing little structural variation between plots....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Multivariate analysis; Phytosociology; Tree stratification; Tropical forest.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000400012

Impacts of the Belo Monte hydroelectric dam construction on pioneer vegetation formations along the Xingu River, Pará State, Brazil
Provedor de dados: 88
Autores: Cunha,Denise de Andrade; Ferreira,Leandro Valle.
There is an important pioneer vegetation formation along the Xingu River in the area where the Belo Monte hydroelectric dam is being constructed that is highly adapted to a seasonally fluctuating water levels. The aim of this study was to examine the habitat and flora of the pioneer formations in the Belo Monte area. The area was divided in three sections for study purposes (Reservoir, Low Flow, and Control) that were expected to experience different degrees of impact from the dam project. The calculations of habitat losses were based on satellite imagery classifications, and a total of 111 plots were established in the three areas for vegetation sampling. Habitat losses of the pioneer formations will total 89.7% when the project is fully functional....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Habitat loss; Low flow reservoir; Richness.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000200005

Análise da estrutura de fragmentos florestais no Planalto Paulistano - SP
Provedor de dados: 88
Autores: DISLICH,RICARDO; CERSÓSIMO,LUCIANA; MANTOVANI,WALDIR.
Neste trabalho é descrita a variação encontrada na estrutura de fragmentos florestais no Planalto Paulistano, sob diversos aspectos e em diferentes escalas de tamanho. Um censo do componente arbóreo dominante (PAP  &gt; ou =  50 cm) em duas áreas (0,5 ha e 0,2 ha) no interior de um fragmento florestal, a Reserva da Cidade Universitária "Armando de Salles Oliveira" (CUASO), Butantã, São Paulo, SP (aproximadamente 23°34'S, 46°43'W) incluiu 227 indivíduos de 50 espécies. Foi encontrada dominância absoluta total (Do) de 20,1 m².ha-1, índice de Shannon (H´) de 3,04 nats.ind-1 e equabilidade de Pielou (J´) de 77,79%. Em cada área, foram encontradas regiões de concentração de espécies pioneiras, secundárias e climácicas. As duas áreas apresentaram diferenças na...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ombrophilous dense forest; Fragments; Structure; Diversity.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000300011

Estrutura sinusial dos componentes herbáceo e arbustivo de uma floresta costeira subtropical
Provedor de dados: 88
Autores: MÜLLER,SANDRA CRISTINA; WAECHTER,JORGE LUIZ.
As sinúsias herbáceas e arbustivas são componentes de comunidades florestais pouco pesquisados nas regiões tropicais e subtropicais. Neste trabalho foram estudadas a composição florística e a estrutura fitossociológica destas sinúsias em uma floresta arenosa (restinga) da Planície Costeira do Rio Grande do Sul, Brasil. Os dados fitossociológicos foram obtidos em 30 parcelas de 2 x 2 m. Em cada parcela anotou-se a presença e a altura máxima das espécies herbáceas e arbutivas, e a cobertura foi estimada pela escala de Causton. A composição florística total da área compreende 61 espécies, 52 gêneros e 33 famílias. As famílias que apresentaram mais de duas espécies foram: Poaceae, Commelinaceae, Orchidaceae, Piperaceae, Rubiaceae e Asteraceae. As formas de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbs; Shrubs; Restinga; Diversity; Life-forms.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000400005

Fungos microscópicos da Mata Atlântica de Paranapiacaba, São Paulo, Brasil
Provedor de dados: 88
Autores: Schoenlein-Crusius,Iracema Helena; Milanez,Adauto Ivo.
(Fungos microscópicos da Mata Atlântica de Paranapiacaba, São Paulo, Brasil). Na Mata Atlântica de Paranapiacaba, no estado de São Paulo, 1770 ocorrências de diferentes táxons de fungos foram registradas de julho de 1988 a maio de 1990. Para a água do riacho foram reportadas 319 ocorrências, 405 para o solo, 565 em folhas submersas de Alchornea triplinervia (Spreng.) M. Arg. e 481 em folhas dispostas sobre o solo. Mastigomycotina representou 316 ocorrências com 20 espécies, Zygomycotina 266 ocorrências com 13 espécies, Deuteromycotina 1107 ocorrências com 82 táxons e Ascomycotina 81 ocorrências com oito espécies. Os fungos foram isolados pelos métodos da lavagem de discos de folhas, placa de solo e iscagem utilizando substratos quitínicos, queratínicos e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungi; Atlantic rainforest; Diversity.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041998000100007

Green algal interactions with physicochemical parameters of some manmade ponds in Zaria, northern Nigeria
Provedor de dados: 88
Autores: Chia,Mathias Ahii; Bako,Sunday Paul; Alonge,Samson O; Adamu,Abu Kasim.
Green algal species and their association with physicochemical parameters in some manmade ponds in Zaria, Nigeria were studied from November 2005 to August 2006. Phytoplankton and water samples were collected, preserved and analyzed using standard methods. A total of 27 green algal species divided into 16 families were recorded. Shannon diversity indices ranged from 1.75 to 2.39 in all ponds, dominance index from 0.14 to 0.23 and species evenness 0.56 to 0.64. Closterium sp. and Rhizoclonium hookeri Kuetz. were positively associated with the concentration of Fe, however they were negatively correlated (sensitive) to alkalinity, total dissolved solids and electrical conductivity. Stichococcus bacillaris Naegeli, Staurastrum rotula Nordst. and Sphaeroplea...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyta; Diversity; Ecology; Lenthic water bodies; Trace metals.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042011000300004

Colonização de clareiras naturais na floresta atlântica no sudeste do Brasil
Provedor de dados: 88
Autores: Tabarelli,Marcelo; Mantovani,Waldir.
RESUMO - (Colonização de clareiras naturais na floresta Atlântica no sudeste do Brasil). Em duas florestas na encosta atlântica no sudeste do Brasil, foi analisada a colonização vegetal de 23 clareiras naturais (34-256 m²). Nos dois locais de estudo, as clareiras pequenas foram as mais abundantes, cobrindo a maior parte da superfície ocupada por este tipo de perturbação (100-66%). As clareiras apresentaram padrão comum de colonização, caracterizado pela dominância de indivíduos e espécies tolerantes à sombra, principalmente aquelas de sub-bosque. Não observou-se relação entre tamanho das clareiras, composição de guildas de regeneração e a abundância das espécies dominantes. Os resultados sugerem que a floresta atlântica possui riqueza reduzida de espécies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Treefall gaps; Colonization; Diversity; Atlantic forest.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000100006

Floristic composition, diversity and structure of the "cerrado" sensu stricto on rocky soils in northern Goiás and southern Tocantins, Brazil
Provedor de dados: 88
Autores: Felfili,Jeanine Maria; Fagg,Christopher William.
The "cerrado" sensu stricto is a savanna woodland physiognomy which occupies most of central Brazil, with the degree of canopy cover varying from 10% to 60% at a site with trees reaching up to seven meters high. It occurs mostly on deep and well-drained soils but can also be found on shallower ones. The diversity and structure of the "cerrado" sensu stricto on shallow and rocky Cambisols and Litosols were studied here. Sixteen 20 x 50 m² plots were sampled in a random design over patches of this vegetation in northern Goiás State and southern Tocantins. All stems from 5 cm diameter at 30 cm from the ground level were measured. Vouchers were collected and deposited at the IBGE herbarium. A total of 87 species in 65 genera and 33 families were found....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Diversity; Rock outcrops; Savanna; Woody vegetation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000300004

Planktic Cyanobacteria from upper Tietê basin reservoirs, SP, Brazil
Provedor de dados: 88
Autores: Sant'Anna,Célia L.; Melcher,Silvia S.; Carvalho,Maria do Carmo; Gelmego,Marcina P.; Azevedo,Maria Teresa de P.
Considering the great ecological and sanitary importance of the cyanobacteria and the need of detailed information about these organisms in Brazilian water bodies, the present study aims at contributing towards the knowledge of the cyanobacterial flora of five reservoirs belonging to the upper Tietê Basin, São Paulo: Billings, Guarapiranga, Jundiaí, Pirapora, Ponte Nova and Taiaçupeba. In the past several years, these reservoirs have been submitted to severe environmental deterioration and have repeatedly presented cyanobacterial blooms, including those of toxic species. The samples were collected between 1997 and 2003 either with plankton net (20 µm mesh) or van Dorn's bottle, and preserved with lugol solution or formaldehyde. Some species were isolated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Diversity; Planktic Cyanobacteria; Reservoirs.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000100002

First record of Reticulocaulis mucosissimus I. A. Abbott (Naccariaceae, Rhodophyta) for the western Atlantic Ocean
Provedor de dados: 88
Autores: Guimarães,Silvia Maria P. B.; Amado-Filho,Gilberto Menezes.
Espírito Santo State lies in the transition region (18°-21° S) between the tropical and subtropical marine-algal provinces and is considered the richest area of the Brazilian flora. The subtidal substratum presents extensive areas of rhodoliths associated with a diversified marine biota. A detailed exploration using Scuba diving technique has revealed many little-known and previously unreported taxa that are new to the Brazilian coast. Among the algae recently discovered, Reticulocaulis mucosissimus I. A. Abbott was found at a depth of 25 meters, thus consisting of the second member of the infrequently encountered family Naccariaceae growing in the same region. This work has revealed additional distribution records of this species not yet reported from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Diversity; Espírito Santo State; Naccariaceae; Reticulocaulis mucosissimus.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000400006

Floristic and vegetation structure of a granitic grassland in Southern Brazil
Provedor de dados: 88
Autores: Ferreira,Pedro Maria de Abreu; Müller,Sandra Cristina; Boldrini,Ilsi Iob; Eggers,Lilian.
A floristic and structural survey of a natural grassland community was conducted on Morro do Osso, a granitic hill in Porto Alegre, RS, Brazil. Structural data were surveyed in 39 one square meter plots placed over two major grassland areas. An accidental fire has occurred in one of the areas approximately one year prior to our survey, leading to further analysis of parameters differences between sites. The floristic list contains 282 species, whereas the structural survey has found 161 species. Families with highest accumulated importance values were Poaceae, Asteraceae and Fabaceae. The diversity and evenness indexes were 4.51 nats ind-1 and 0.86, respectively. Cluster analysis denoted two groups coinciding with the areas distinguished by the fire...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campos; Diversity; Fire; Relict vegetation; Similarity; Threatened species.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000100004

Occurrence of Yeast Species in Soils under Native and Modified Vegetation in an Iron Mining Area
Provedor de dados: 90
Autores: Moreira,Geisianny Augusta Monteiro; Vale,Helson Mario Martins do.
ABSTRACT Soils of the Quadrilátero Ferrífero are rich in mineral resources, especially gold and iron. Soil management and mining activities greatly impact soil biology. However, studies addressed to the diversity of microorganisms and their ecological role in the recovery of these areas are scarce. This study aimed to assess the yeast occurrence in soils with natural vegetation (Atlantic Forest, neotropical savanna, and iron outcrop) and areas with anthropogenic modifications (Eucalyptus stand and rehabilitated area) in the Quadrilátero Ferrífero region. We isolated and identified a total of 68 yeast. Partial sequencing of the 26S ribosomal gene revealed the presence of six genera: Saitozyma, Pseudozyma, Meyerozyma, Debaryomyces, Lipomyces, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Fungi; Land use; Mining.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100418

Anthropization Effects on the Filamentous Fungal Community of the Brazilian Catimbau National Park
Provedor de dados: 90
Autores: Cruz,Roberta; Ramos,Sérgio Murilo Sousa; Fonseca,Julyanna Cordoville; Motta,Cristina Maria de Souza; Moreira,Keila Aparecida.
ABSTRACT The Caatinga biome features an exclusive endemic biodiversity, and is characterized by the presence of xerophytic, deciduous vegetation, high temperatures, and low rainfall. This important park has undergone anthropization, especially through extraction of firewood and timber and growing plants for raising goats. The objectives of this study were to compare the communities of filamentous fungi present in the preserved area and in the anthropized soil of the Catimbau National Park in Buíque, PE, Brazil, and to evaluate the impacts of anthropization on such communities. A total of 12 collections of soil samples were made, six in the preserved area and six in the anthropic area, and the physicochemical properties of the soil samples were analyzed....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Diversity; Aspergillus; Gongronella; Penicillium.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100419

Isolation, Characterization and Symbiotic Efficiency of Nitrogen-Fixing and Heavy Metal-Tolerant Bacteria from a Coalmine Wasteland
Provedor de dados: 90
Autores: Ferreira,Paulo Ademar Avelar; Dahmer,Sabrina de Fatima Barbosa; Backes,Tais; Silveira,Andressa de Oliveira; Jacques,Rodrigo Josemar Seminoti; Zafar,Mohsin; Pauletto,Eloy Antonio; Santos,Marco Antônio Oliveira dos; Silva,Krisle da; Giachini,Admir José; Antoniolli,Zaida Inês.
ABSTRACT: Areas affected by coal mining can be recovered by revegetation with leguminous plants associated with nitrogen-fixing bacteria. This study addressed the isolation and characterization of native nitrogen-fixing bacteria from coalmine wasteland under different vegetation restoration approaches using Macroptilium atropurpureum (DC) Urb and Vicia sativa L. as trap plants. The bacteria were characterized and identified on the basis of 16S rRNA sequences. Additionally, nitrogen-fixing strains were characterized for tolerance to high heavy metal and low pH levels, as well as for their effect on growth, nodulation, and symbiotic efficiency of M. atropurpureum and V. sativa. Soil samples were taken from the rhizosphere of eight areas, between 6 and 20...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; 16S rRNA; Rhizobium; Bradyrhizobium; Burkholderia.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100420

First record of Anastrepha parishi Stone (Diptera, Tephritidae) and its host in Brazil
Provedor de dados: 92
Autores: Jesus,Cristiane Ramos de; Oliveira,Manoela Nobre de; Souza Filho,Miguel Francisco de; Silva,Ricardo Adaime da; Zucchi,Roberto Antonio.
Anastrepha parishi Stone, 1942 was reared in fruits of Oenocarpus bacaba Martius, 1823 (Arecaceae) collected in Pracuúba, State of Amapá. This is the first record of an Anastrepha species in a native species of Arecaceae.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Arecaceae; Diversity; Fruit fly; Oenocarpus bacaba.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000100023

Insects associated with the composting process of solid urban waste separated at the source
Provedor de dados: 92
Autores: Morales,Gladis Estela; Wolff,Marta.
Sarcosaprophagous macroinvertebrates (earthworms, termites and a number of Diptera larvae) enhance changes in the physical and chemical properties of organic matter during degradation and stabilization processes in composting, causing a decrease in the molecular weights of compounds. This activity makes these organisms excellent recyclers of organic matter. This article evaluates the succession of insects associated with the decomposition of solid urban waste separated at the source. The study was carried out in the city of Medellin, Colombia. A total of 11,732 individuals were determined, belonging to the classes Insecta and Arachnida. Species of three orders of Insecta were identified, Diptera, Coleoptera and Hymenoptera. Diptera corresponding to 98.5%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compost; Diptera; Diversity; Urban entomology.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000400017

A survey of necrophagous blowflies (Diptera: Oestroidea) in the Amazonas-Negro interfluvial region (Brazilian Amazon)
Provedor de dados: 92
Autores: Amat,Eduardo; Marinho,Marco Antonio Tonus; Rafael,José Albertino.
ABSTRACT The fauna of blowflies (Calliphoridae and Mesembrinellidae) in three localities of primary Amazon forest coverage in the Amazonas-Negro interfluvial region was assessed. A total of 5066 blowflies were collected, with Chloroprocta idiodea being the most abundant species (66.3%). A difference in species richness between the localities ZF2 and Novo Airão was observed. Comparison among sampled sites revealed no considerable variation in fauna composition, except for the species Eumesembrinella benoisti (Séguy 1925) and Hemilucilia sp., whose occurrence was observed only in a single locality. Apparently, Amazon rivers are not efficient geographical barriers to influence the current composition of necrophagous blowfly assemblages. Also, most of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blowfly assemblage; Calliphoridae; Diversity; Forensic entomology; Mesembrinellidae.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262016000100057

Social wasps of two Cerrado localities in the northeast of Maranhão state, Brazil (Hymenoptera, Vespidae, Polistinae)
Provedor de dados: 92
Autores: Silva,Suzanna de Sousa; Azevedo,Gisele Garcia; Silveira,Orlando Tobias.
Social wasps of two Cerrado localities in the northeast of Maranhão state, Brazil (Hymenoptera, Vespidae, Polistinae). Results are presented of a survey of social wasps from two savanna localities 30 km apart from each other in the northeastern part of the Brazilian state of Maranhão, Brazil: village of Bom Jesus (municipality of Urbano Santos) and village of Tabocas (municipality of Barreirinhas). Two hundred and twenty-seven nests of 31 species of 13 genera were found and mapped. Polybia rejecta was the species with the largest average density of colonies/ha in both areas. The similarity (Jaccard's index) between the Tabocas and Bom Jesus faunas was 41.9%. Twenty-seven species of plants were utilized as nesting substrate. In Tabocas, Qualea parviflora...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Diversity; Inventory; Social hymenopterans.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000400017

Checklist of Ephemeroptera (Insecta) from São Mateus River Basin, Espírito Santo, Brazil
Provedor de dados: 92
Autores: Angeli,Kamila Batista; Rozário,Ezinete Moreira M. do; Salles,Frederico Falcão.
ABSTRACTIn order to expand the knowledge on the composition of Ephemeroptera from large rivers, we present, herein, the first survey of mayflies from the São Mateus River Basin, Espírito Santo State. Adults were collected biannually in 2012 and 2013 with the aid of Pennsylvania light trap in eleven points distributed in the main river of the river basin, São Mateus River and its two main tributaries, Cotaxé River (Braço Norte) and Cricaré River (Braço Sul). Thirty-three species were identified (22 nominal and 11 morphospecies) in 24 genera and five families. One genus and one species are reported for the first time from Brazil, three species from Southeastern Region of Brazil, and two species from the state. Five species and one genus not previously...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adult stage; Aquatic insects; Diversity; Neotropical region; Main river.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000300197

Terrestrial arthropods from tree canopies in the Pantanal of Mato Grosso, Brazil
Provedor de dados: 92
Autores: Marques,Marinêz Isaac; Adis,Joachim; Santos,Geane Brizzola dos; Battirola,Leandro Dênis.
Terrestrial arthropods from tree canopies in the Pantanal of Mato Grosso, Brazil. This study represents a contribution to the knowledge of the diversity of arthropods associated to the canopy of Vochysia divergens Pohl (Vochysiaceae). Three trees individuals were sampled during two seasonal periods in this region: a) by spraying one tree canopy during high water (February); b) by fogging two tree canopies during low water (September/October). The 15,744 arthropods (183.2±38.9 individuals/m²) obtained from all three trees (86 m²) represented 20 taxonomic orders, 87.1% were Insecta, and 12.9% Arachnida. The dominant groups were Hymenoptera (48.5%; 88.9 individuals/m²), mostly Formicidae (44.5%; 81.4 individuals/m²), followed by Coleoptera (14.0%; 25.5...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arthropods; Canopy; Diversity; Pantanal.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262006000200007

Biodiversity within the subfamily Alyssinae (Hymenoptera, Braconidae) in the Natural Park Peñas de Aya (Spain)
Provedor de dados: 92
Autores: Peris-Felipo,Francisco Javier; Jiménez-Peydró,Ricardo.
Biodiversity within the subfamily Alyssinae (Hymenoptera, Braconidae) in the Natural Park Peñas de Aya (Spain). The study of parasitoid Hymenoptera is of significance for the assessment of diversity in a given area because of their role in the regulation of insects populations. The present work analyses diversity within Alysiinae (Hymenoptera, Braconidae) in the Forested Estate of Artikutza, located in the Natural Park Peñas de Aya, western Pyrenees, Spain. Collection of specimens was spread over two years and was carried out in two different habitats: mixed forest and beech forest. A total of 2,270 specimens, belonging to 22 separate genera, were captured. Subsequently, alpha, beta and gamma diversities were analysed, and the beech forest was proven to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Forest system; Parasitoids; Protected area; Pyrenees.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300015

Diversity of social wasps (Hymenoptera, Vespidae, Polistinae) in three fragments of semideciduous seasonal forest in the northwest of São Paulo State, Brazil
Provedor de dados: 92
Autores: Gomes,Bruno; Noll,Fernando B.
Human exploitation of the forest in the northwest of São Paulo State has generated enormous fragmentation of that forest. Such disturbance has reduced the populations of insects in general. This work was a survey of social wasps (Hymenoptera, Vespidae; Polistinae) in three areas in different stages of regeneration: Paulo de Faria - SP (435 ha), Pindorama - SP (128 ha) and Neves Paulista - SP (1 ha). These three areas were chosen for comparative purposes. To capture the wasps, it was used: active collecting with attractant liquid (solution of water, salt and sugar) with the aid of a dorsal spray bag. During the period from July to December 2006, 414 social wasps were collected in Paulo de Faria, constituting seven species belonging to four genera; 111...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Hymenoptera; Polistinae; Vespidae.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000300018

Interaction between Tephritidae (Insecta, Diptera) and plants of the family Asteraceae: new host and distribution records for the state of Rio Grande do Sul, Brazil
Provedor de dados: 92
Autores: Savaris,Marcoandre; Lampert,Silvana; Lorini,Lisete M.; Pereira,Paulo R.V.S.; Marinoni,Luciane.
Twenty species of Tephritidae (Diptera) are recorded in association with capitula of plants in the family Asteraceae. The Tephritidae genus Tetreuarestais registered for Rio Grande do Sul for the first time. Five species of Tephritidae are newly recorded for Rio Grande do Sul, and new hosts are recorded for the following fly species: Dioxyna chilensis (Macquart), Plaumannimyia dolores (Hering), Plaumannimyia imitatrix (Hering), Plaumannimyia miseta(Hering), Plaumannimyia pallensHering, Tomoplagia incompleta (Williston), Tomoplagia matzenbacheriPrado, Norrbom &amp; Lewinsohn, Tomoplagia reimoseriHendel, Xanthaciura biocellata(Thomson) and Xanthaciura chrysura(Thomson).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Fruit flies; Occurrence; Taxonomy; Tephritinae.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000100014

Local distribution of blackfly (Diptera, Simuliidae) larvae in two adjacent streams: the role of water current velocity in the diversity of blackfly larvae
Provedor de dados: 92
Autores: Figueiró,Ronaldo; Nascimento,Érika Silva do; Gil-Azevedo,Leonardo Henrique; Maia-Herzog,Marilza; Monteiro,Ricardo Ferreira.
This study aimed to evaluate the influence of water velocity speed on the local distribution and taxocenosis structure of blackfly larvae. The larvae were collected from two adjacent streams located in the municipality of Angra dos Reis (RJ): Caputera River and one of its tributaries. Riffle litter patches were sampled randomly using a 30 x 30 cm quadrat. Four blackfly species were found: Simulium incrustatum s. l. Lutz, 1910; Simulium (Inaequalium) sp. ; Simulium pertinax s. l. Kollar, 1832 and Simulium subpallidum s. l. Lutz, 1909. Among these species, Simulium pertinax s. l. was clearly associated with higher water current speeds, while Simulium subpallidum s. l. showed association with lower water velocities, and Simulium (Inaequalium) sp. had a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Co-occurrence; Diversity; Neotropical.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000300020

Spatial and temporal dynamics of drosophilid larval assemblages associated to fruits
Provedor de dados: 92
Autores: Mata,Renata Alves da; Valadão,Henrique; Tidon,Rosana.
The study of organisms and their resources is critical to further understanding population dynamics in space and time. Although drosophilids have been widely used as biological models, their relationship with breeding and feeding sites has received little attention. Here, we investigate drosophilids breeding in fruits in the Brazilian Savanna, in two contrasting vegetation types, throughout 16 months. Specifically, larval assemblages were compared between savannas and forests, as well as between rainy and dry seasons. The relationships between resource availability and drosophilid abundance and richness were also tested. The community (4,022 drosophilids of 23 species and 2,496 fruits of 57 plant taxa) varied widely in space and time. Drosophilid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diptera; Diversity; Drosophila; Drosophilidae; Neotropical.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000100050

Carabid beetle assemblages in three environments in the Araucaria humid forest of southern Brazil
Provedor de dados: 92
Autores: Moraes,Rodrigo Milton; Mendonça Jr,Milton de Souza; Ott,Ricardo.
Carabid beetle assemblages in three environments in the Araucaria humid forest of southern Brazil. Carabidae is composed mainly by ground-dwelling predator beetles. It is the fourth most diverse group within Coleoptera, but its diversity in the Neotropical region is understudied. Here we describe and analyze the diversity of carabid beetles in a region of subtropical rain forest dominated by Araucaria angustifolia with different landscapes. Three areas were chosen in an environmental integrity gradient: primary forests, secondary forests and old Pinus plantations. Pitfall traps were taken monthly, in a total of 14 samples per area. 1733 adult carabid beetles, belonging to 18 species, were sampled. There were differences in richness and abundance between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carabidae; Coleoptera; Diversity; Insecta; Pitfall trap.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000100011

Is the capture success of orchid bees (Hymenoptera, Apoidea) influenced by different baited trap designs? A case study from southern Brazil
Provedor de dados: 92
Autores: Sydney,Nicolle Veiga; Gonçalves,Rodrigo Barbosa.
Orchid bees are increasingly applied on Neotropical biomonitoring and bioindication studies due to the relative easiness of sampling and identification when compared to other bee groups. A considerable number of orchid bee community studies have been adopting baited traps as a sampling method, especially for replication purposes. However, the trap attributes are variable, and hitherto no evaluation of different designs was carried out. Here, five attributes of baited traps were tested: trap volume, number of entrance holes, presence of landing platform, kind of landing platform, and fixation content. We use Mann-Whitney tests to access differences in richness and abundance capture rates for each trap design. We found that volume, number of entrance holes,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Euglossine; Methodology evaluation; Sampling.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000100032

Butterflies (Lepidoptera, Papilionoidea and Hesperioidea) of the "Baixada Santista" region, coastal São Paulo, southeastern Brazil
Provedor de dados: 92
Autores: Francini,Ronaldo Bastos; Duarte,Marcelo; Mielke,Olaf Hermann Hendrik; Caldas,Astrid; Freitas,André Victor Lucci.
Butterflies (Lepidoptera, Papilionoidea and Hesperioidea) of the "Baixada Santista" region, coastal São Paulo, southeastern Brazil. A list with 538 species of butterflies recorded in the Baixada Santista, São Paulo ( SE Brazil) is presented. Standard sampling protocols (i.e. with entomological nets) were followed. Baited traps were installed for fruit feeding species. Data from the literature and entomological collections were also considered in the total estimated species richness. The species richness recorded in the Baixada Santista region represents about 16% of the Brazilian butterfly fauna, and 34% of the known butterfly fauna for the state of São Paulo. The present list contains an appreciably higher number of species in comparison to other lists...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Conservation; Diversity; Neotropical region.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000100010

Gall-inducing insects of an Araucaria Forest in southern Brazil
Provedor de dados: 92
Autores: Toma,Tiago Shizen Pacheco; Mendonça Júnior,Milton de Souza.
Gall-inducing insects of an Araucaria Forest in southern Brazil. Diversity of galling insects is reported for the first time in an Araucaria Forest site. We address gall characteristics, host plant identification and the inducer identification and provide additional information about sites of gall occurrence in a mosaic of continuous forest and natural forest patches. After 40h of sampling we found 57 species of five insect orders, the majority of them Diptera (Cecidomyiidae), galling 43 host plant species, which in turn belonged to 18 host plant families. Stem and buds together, compared to leaves, harbored more galls, which were mostly glabrous, isolated, fusiform and green. Myrtaceae, Asteraceae and Melastomataceae were the most representative host...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Forest patch; Host plant; Insect galls; Insecta.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000200014

Mosquito community composition in dynamic landscapes from the Atlantic Forest biome (Diptera, Culicidae)
Provedor de dados: 92
Autores: Guedes,Mário Luís Pessôa; Navarro-Silva,Mário Antônio.
Mosquito community composition in dynamic landscapes from the Atlantic Forest biome (Diptera, Culicidae). Considering that some species of Culicidae are vectors of pathogens, both the knowledge of the diversity of the mosquito fauna and how some environment factors influence in it, are important subjects. In order to address the composition of Culicidae species in a forest reserve in southern Atlantic Forest, we compared biotic and abiotic environmental determinants and how they were associated with the occurrence of species between sunset and sunrise. The level of conservation of the area was also considered. The investigation was carried out at Reserva Natural do Morro da Mina, in Antonina, state of Paraná, Brazil. We performed sixteen mosquito...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Insecta; Malaria; Shannon trap; Tropical rain forest.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262014000100014

Ant fauna (Hymenoptera, Formicidae) associated to arboreal nests of Nasutitermes spp: (Isoptera, Termitidae) in a cacao plantation in southeastern Bahia, Brazil
Provedor de dados: 92
Autores: Santos,Pollyanna Pereira; Vasconcellos,Alexandre; Jahyny,Benoit; Delabie,Jacques Hubert Charles.
Ants are among the most common arthropods that colonize termite nests. The aim of this study was to identify the ant fauna associated to termite nests found in a cacao plantation in the county of Ilhéus, Bahia, Brazil, with emphasis on the fauna that uses the nests as foraging and/or nesting environment. For this purpose, 34 active, decadent and abandoned nests of Nasutitermes corniger, N. ephratae and Nasutitermes sp., with different volumes and degrees of activity, were dissected. A total of 54 ant species, belonging to 23 genera and five subfamilies, was found in the constructions. The active, decadent and abandoned termite nests presented, respectively, six, eight and 48 ant species. Crematogaster acuta and Ectatomma tuberculatum were the most frequent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural forest system; Diversity; Nesting; Theobroma cacao.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300016

Seasonal and spatial species richness variation of dung beetle (Coleoptera, Scarabaeidae s. str.) in the Atlantic Forest of southeastern Brazil
Provedor de dados: 92
Autores: Hernández,Malva I. Medina; Vaz-de-Mello,Fernando Z.
The knowledge on Atlantic Forest scarab beetle fauna is quite limited. This biome is strongly degraded and these insects can be used as bioindicators since they are sensitive to forest destruction and show distinct organizational patterns in forest fragments or in areas that have been deteriorated by human activity. Thus, a study of the Scarabaeidae (sensu stricto) dung beetles fauna that inhabit Serra do Japi, São Paulo, Brazil (23º12'-23º22' S and 46º53'-47º03'W) was carried out; the monthly species richness was analyzed in six areas during one year and the vegetation's structural physiognomy was described. The areas included a conserved and a degraded valley, a northward and a southward hillside, a hilltop, and an area of secondary forest growing under...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dung Beetles; Diversity; Ecology; Richness; Scarabaeidae.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000400010

Necrophagous diptera associated with wild animal carcasses in southern Brazil
Provedor de dados: 92
Autores: Silva,Ândrio Z. da; Hoffmeister,Camila H; Anjos,Vanessa A. dos; Ribeiro,Paulo B; Krüger,Rodrigo F.
Necrophagous Diptera associated with wild animal carcasses in southern Brazil. The aim of this study was to acquire a better knowledge concerning the diversity of necrophagous Diptera that develop on wild animal carcasses. For this purpose, the decomposition of six wild animal carcasses was observed in order to collect and identify the main species of necrophagous flies associated with the decomposition process. The carcasses were found on highways near the cities of Pelotas and Capão do Leão in the initial stage of decomposition, with no significant injuries or prior larval activity. Four wild animal models were represented in this study: two specimens of Didelphis albiventris Lund, 1840; two Tupinambis merianae Linnaeus, 1758; one Nothura maculosa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calliphoridae; Community; Diversity; Flies; Insecta.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262014000400006

Dung beetle assemblages (Coleoptera, Scarabaeinae) in Atlantic forest fragments in southern Brazil
Provedor de dados: 92
Autores: Campos,Renata C.; Hernández,Malva I. Medina.
Dung beetle assemblages (Coleoptera, Scarabaeinae) in Atlantic forest fragments in southern Brazil. The beetles of the subfamily Scarabaeinae are important organisms that participate in the cycle of decomposition, especially in tropical ecosystems. Most species feed on feces (dung) or carcasses (carrion) and are associated with animals that produce their food resources. Dung beetles are divided into three functional groups: rollers, tunnelers and dwellers. This present work aims to study the diversity of dung beetle communities inhabiting fragments of the Atlantic Forest, with the purpose of describing the ecology of the species in southern Brazil. This study was conducted in the region of Campos Novos, in Santa Catarina, where twenty sites of Atlantic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cycle of decomposition; Diversity; Ecology; Feeding guild; Insecta.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000100008

Genetic polymorphism among natural populations of Anacardium humile A. ST-HIL
Provedor de dados: 94
Autores: Santos,Silvia Correa; Carvalho,Raquel dos Santos; Davide,Livia Maria Chamma.
Abstract  The genus Anacardium presents nine species, of these, three have sub-bush size, common in the Cerrado of the Center-West of Brazil. The objective of this work was to evaluate the genetic variability of the species, collected in eleven provenances, using RAPD markers. Genomic DNA from 122 accessions was extracted and amplified with 25 decamer primers. The results indicated polymorphism, ranging from 77.71% to 96.18%. The distribution of genetic diversity among and within populations shows that 27.14% of the variability is found between populations and 37.44% within the populations, suggesting the existence of genetic variability that may be related to the reproductive strategies adopted by the species throughout its evolution. The index of...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Genetic variability; Diversity; Native species; Cerrado.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000100802

Thrips species associated with varieties of the native cerrado fruit tree Hancornia speciosa
Provedor de dados: 94
Autores: Silva,Jéssica Ferreira; Pereira,Jaqueline Magalhães; Rocha,Charlles Brandão Silva; Peres,André Júnio Andrade; Lima,Élison Fabrício Bezerra.
Abstract  Studies of insects associated with the fruit tree Hancornia speciosa Gomes (Apocynaceae), a native of the Brazilian Cerrado popularly known as “mangabeira”, are generally restricted to reports from seedling nurseries. Thrips predominate among insects that attack this crop. This study investigated the species of Thysanoptera that use this native fruit as a host, and which variety they prefer. The H. speciosa varieties speciosa s.str., cuyabensis, gardneri and pubescens were obtained from the collections of the ex-situ germplasm bank of native species at the Escola de Agronomia, Universidade Federal de Goiás, Goiânia, Brazil. Evaluations were conducted from January through December 2016. A total of 1679 individual thrips were identified. Thrips...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thysanoptera; Mangabeira; Foliar trichomes; Diversity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000500404

Type specimens of Limnophorini (Diptera: Muscidae) deposited in the Museum für Naturkunde, Humboldt-Universität zu Berlin (Berlin, Germany)
Provedor de dados: 103
Autores: Couri,Márcia; Pont,Adrian.
ABSTRACT The type specimens of 153 species of Limnophorini in the Museum für Naturkunde, Berlin, Germany, were revised. Differential diagnoses, notes on the types, and photographs of some of them (habitus and labels) are provided.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Morphology; Taxonomy.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100313

Effects of habitat heterogeneity on epiedaphic Collembola (Arthropoda: Hexapoda) in a semiarid ecosystem in Northeast Brazil
Provedor de dados: 103
Autores: Ferreira,Aila Soares; Rocha,Isabel Medeiros dos Santos; Bellini,Bruno Cavalcante; Vasconcellos,Alexandre.
ABSTRACT The spatial distribution of abiotic resources and environmental conditions can vary at small scales within terrestrial ecosystems, influencing the composition of soil fauna. Epiedaphic springtails (Collembola) of a semiarid Caatinga ecosystem were studied to determine if factors related to vegetation structure, such as species richness, aerial biomass, litterfall, and soil characteristics (pH, granulometry and soil organic matter), influence species richness and abundance of this group. A total of 5,513 individuals were collected of 15 species distributed in 13 genera and 9 families. The most abundant species were Temeritas sp., with 2,086 (38% of the total abundance) individuals, and Neotropiella meridionalis (Arlé, 1939), with 1,911 (35% of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Diversity; Soil dynamics; Soil mesofauna; Neotropical Region.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100324

Fish habitat associations along a longitudinal gradient in a preserved coastal Atlantic stream, Brazil
Provedor de dados: 103
Autores: Wolff,Luciano Lazzarini; Hahn,Norma Segatti.
ABSTRACT Habitat conditions at multiple scales are one of the major factors structuring ichthyofauna. Thus, we analyzed the fish habitat associations along the headwater-mouth gradient of a coastal Atlantic stream. We categorized the sampling sites into habitat units, so that in the middle reach these categories were statistically differentiated into riffles, runs and pools. Samplings were carried out quarterly from May 2009 to February 2010 using electrofishing. Principal component analysis (PCA) indicated an environmental gradient from higher water velocity and rocky bottom to deeper and sandy areas in the headwater-mouth direction. A total of 1,495 individuals belonging to 27 species were captured, being 13, 18 and 22 from headwater, middle and mouth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic gradient; Diversity; Ichthyofauna; Mesohabitat; Multiple scales.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100335

Interconnectedness during high water maintains similarity in fish assemblages of island floodplain lakes in the Amazonian Basin
Provedor de dados: 103
Autores: Freitas,Carlos Edwar de C.; Siqueira-Souza,Flávia K.; Guimarães,Alan Rezk; Santos,Fabiane A.; Santos,Ivanildo L.A.
We conducted a study to test the hypothesis that interconnectedness among island floodplain lakes and the adjacent Solimões River during the flood stage of the hydrologic cycle is enough to maintain similarity in fish species assemblages. Gill net samples were collected during high and low water periods for three consecutive years (July 2004 to July 2006) in four lakes on Paciência Island. Two lakes, Piranha and Ressaca, are connected to the river all year, and the other two, Preto and Cacau, which are in the center of the island, are isolated during low water periods. The abundance, species richness and evenness of the fish assemblages in these lakes did not differ according to their relative positions or the season of the hydrological cycle, which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian; Diversity; Flood pulse; Floodplain lakes.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600014

Cerrado ground-dwelling ants (Hymenoptera: Formicidae) as indicators of edge effects
Provedor de dados: 103
Autores: Brandão,Carlos Roberto F.; Silva,Rogério R.; Feitosa,Rodrigo M.
Large-scale agricultural production in Brazil preferentially occupies plateaus reclaimed from areas originally covered by Cerrado (savanna). Depending on the region, a percentage of the pristine vegetation coverage must be preserved by law, resulting in the creation of fragmented legal Cerrado reserves. The geometry of these relatively small legal reserves creates new habitat edges and ecotones, whose effects on the invertebrate fauna are poorly understood. This study aimed to assess the effects of abrupt edges resulting from soy production on ground-dwelling ant assemblages in the Brazilian Cerrado. The study sites are located within the Amazon region, in the state of Maranhão, northern Brazil, but were covered by Cerrado on a relatively low plateau,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Consevation; Diversity; Legal reserves; Savanna; Soy production.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300012

Spider assemblage (Arachnida: Araneae) associated with canopies of Vochysia divergens (Vochysiaceae) in the northern region of the Brazilian Pantanal
Provedor de dados: 103
Autores: Battirola,Leandro D.; Batistella,Daniel A.; Rosado-Neto,Germano H.; Brescovit,Antonio D.; Marques,Marinêz I.
ABSTRACT This study describes the composition and temporal variation of the spider assemblage (Arachnida: Araneae) associated with canopies of Vochysia divergens Pohl. (Vochysiaceae) in the northern region of the Brazilian Pantanal. Three V. divergens plants were sampled in 2004, at each seasonal period of the northern Pantanal (high water, receding water, dry season and rising water), using thermonebulization of the canopies with insecticide, totaling 396 m2 of sampled canopies. Analysis of abundance and richness of spider families were based on Non-Metric Multidimensional Scaling (NMDS) and Variance Analysis (ANOVA and MANOVA). A total of 7,193 spiders were collected (6,330 immatures; 88.0%; 863 adults, 12.0%) distributed in 30 families. Araneidae (1,676...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Invertebrates; Diversity; Forest canopy; Seasonality; Wetlands.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000400700

Community structure and population dynamics of small mammals in an urban-sylvatic interface area in Rio de Janeiro, Brazil
Provedor de dados: 103
Autores: Gentile,Rosana; Cardoso,Thiago S.; Costa-Neto,Sócrates F.; Teixeira,Bernardo R.; D’Andrea,Paulo S.
ABSTRACT The Atlantic Forest is one of the most disturbed Brazilian biomes, with 183 out of 298 species of mammals occurring in the state of Rio de Janeiro. In this study, we aimed to characterize the diversity, community structure, and habitat use of small mammals in the FIOCRUZ Atlantic Forest Campus (CFMA), including areas of Pedra Branca State Park (PBSP, subunit Pau da Fome), state of Rio de Janeiro. We also compared species diversity and composition between two moments 15 years apart (2001 and 2012-2015) and analyzed the population dynamics of the marsupial Didelphis aurita (Wied-Neuwied, 1826). Small mammal captures were made in different habitats: sylvatic-urban interface areas near human dwellings, disturbed forest, and preserved forest areas....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Diversity; Habitat disturbance; Marsupials; Rodents.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100323

A new species of Mucrosomia (Collembola: Isotomidae) from Brazil
Provedor de dados: 103
Autores: Mendonça,Maria Cleide de; Queiroz,Gabriel Costa.
A new species of Collembola, Mucrosomia alticola sp. nov., is described and illustrated based on material from "Parque Nacional da Serra dos Órgãos" (State of Rio de Janeiro) and from "Parque Nacional da Serra do Caparaó" (State of Minas Gerais). This is the first record of a species of Mucrosomia for Brazil. The genus has, up to date, only three species and can be diagnosed by the absence of eyes and pigmentation, PAO present, tenent hair pointed, Abd V and VI fused, manubrium with 1+1 chaetae on anterior side, long dens and a remarkable mucro with five teeth. The presence of chaetae on ventral thorax, between segments II-III, supports the new species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anurophorinae; Diversity; Neotropics; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000200012

Horizontal and vertical distribution of mesozooplankton species richness and composition down to 2,300 m in the southwest Atlantic Ocean
Provedor de dados: 103
Autores: Bonecker,Sérgio L.C.; Araujo,Adriana V. de; Carvalho,Pedro F. de; Dias,Cristina de O.; Fernandes,Luiz F.L.; Migotto,Alvaro E.; Oliveira,Otto M.P. de.
We describe the species richness, distribution and composition of mesozooplankton over the continental shelf and slope, and in the water masses in the Campos Basin, southwest Atlantic Ocean. We analyzed the mesozooplankton from two oceanographic cruises (rainy and dry seasons, 2009) with samples taken in five different water masses from the surface to 2,300 m depth. In the Subsurface Water (SS), in both sampling periods, more species were recorded over the slope (rainy: 100; dry: 128) than the continental shelf (rainy: 97; dry: 104). Over the slope, species richness decreased with increasing depth: the highest values were observed in the South Atlantic Central Water (SACW), and the lowest values in the North Atlantic Deep Water (NADW), in both sampling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deep sea; Diversity; Southeastern Brazil; Zooplankton.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000500005

Why we shouldn’t blame women for gender disparity in academia: perspectives of women in zoology
Provedor de dados: 103
Autores: Slobodian,Veronica; Soares,Karla D.A.; Falaschi,Rafaela L.; Prado,Laura R.; Camelier,Priscila; Guedes,Thaís B.; Leal,Laura C.; Hsiou,Annie S.; Del-Rio,Glaucia; Costa,Eliza R.; Pereira,Karla R.C.; D’Angiolella,Annelise B.; Sousa,Shirliane de A.; Diele-Viegas,Luisa M.
ABSTRACT The following letter, from a network of women zoologists, is a reply to the article of AlShebli et al. (2020), which suggests that female protégés reap more benefits when mentored by men and concludes that female mentors hinder the success of their female protégés and the quality of their impact. This contribution has two parts. First, we highlight the most relevant methodological flaws which, in our opinion, may have impacted the conclusions of AlShebli et al. (2020). Second, we discuss issues pertaining to women in science, bring a perspective of Women in Zoology and discuss how current diversity policies are positively changing our field.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Academic settings; Diversity; Gender gap; Gendered metrics; STEM; Women in science.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702021000100101

Biodiversity of decapod crustaceans in the estuarine floodplain around the city of Belém (Pará) in Brazilian Amazonia
Provedor de dados: 103
Autores: Cavalcante,Danielle Viveiros; Silva,Bianca Bentes da; Martinelli-Lemos,Jussara Moretto.
The present study focused on the decapod fauna of the fluvial-estuarine environment of the Guajará Bay, in the Brazilian state of Pará, where specimens were collected monthly from six sites, from May 2006 to April 2007. A total of 6,793 specimens were captured, belonging to 11 species of crab and shrimp: eight palaemonids - Macrobrachium amazonicum (Heller, 1862), Macrobrachium surinamicum Holthuis, 1948, Macrobrachium carcinus (Linnaeus, 1758), Macrobrachium rosenbergii (De Man, 1879), Macrobrachium spp. 1-4 -, one portunid - Callinectes bocourti A. Milne-Edwards, 1879 -, and two trichodactylids - Sylviocarcinus devileii H. Milne-Edwards, 1853 and Sylviocarcinus pictus (Milne-Edwards, 1853). While no significant differences were found in the ecological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Decapoda; Diversity; Estuary.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000300003

Vertical structure of an assemblage of bats (Mammalia: Chiroptera) in a fragment of Atlantic Forest in Southern Brazil
Provedor de dados: 103
Autores: Carvalho,Fernando; Fabián,Marta E.; Menegheti,João O.
Few studies have focused the vertical structure of bat assemblages, and how it influences community composition. The goal of this study was to analyze the vertical structure of an assemblage of bats in a forest fragment in southern Brazil. Bats were sampled using mist-nets placed at three heights (understory, below-canopy, and canopy). Forest strata were compared with respect to their species richness and diversity. The latter was estimated using the Shannon-Wiener index (H'), and the statistical significance of differences among strata was assessed using t tests. We used an index of Constancy (C) to determine the frequency of a given species in each vegetation stratum, such that a species was considered as "frequent" (C &amp;gt; 50), "less frequent" (25...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Phyllostomidae; Richness; Stratification; Vespertilionidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000500004

Species of fruit flies (Diptera: Tephritidae): in a transect of the Amazonian Rainforest in Oiapoque, Amapá, Brazil
Provedor de dados: 103
Autores: Trindade,Rose B. Rodrigues; Uchôa,Manoel A.
Species of fruit flies (Tephritidae) were surveyed in a transect of the Amazonian Rainforest in the district of Clevelândia do Norte, municipality of Oiapoque, state of Amapá, Brazil. This study describes the diversity of fruit fly species sampled inside this transect (2.2 linear km). Eleven McPhail traps were serviced weekly from June 2002 to June 2003. A total of 55 samples were obtained, totaling 125 specimens of Tephritidae. Anastrepha Schiner, 1868 was the most abundant and diverse genus, with 18 species caught. Two new species, A. oiapoquensis Norrbom &amp;amp; Uchôa, 2011 and A. siculigera Norrbom &amp;amp; Uchôa, 2011, were discovered in this survey. Anastrepha coronilli Carrejo &amp;amp; González, 1993 (n = 40) was the most abundant species. Six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anastrepha; Diversity; McPhail traps; Northern Brazil.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000500013

Denied density-dependent seedling recruitment in a fragmented forest does not decrease seedling diversity
Provedor de dados: 97
Autores: VALDIVIA,CARLOS E; SIMONETTI,JAVIER A.
Negative density-dependent relationships in plant communities are currently claimed as an important mechanism for the maintenance of plant diversity. However, anthropogenic perturbations such as forest fragmentation might modify such relationships. We evaluated density-dependent relationships between seed and seedling abundance of a tree assemblage in a fragmented forest for estimating seed-to-seedling transitions and their effects on seedling richness. In continuous forest, two out of four and one out of four species presented significant or a tendency to exhibit negative seedling recruitment which is in agreement with other temperate and tropical forests. In forest fragments (1-6 ha), however, this relationship was uncoupled. Seedling richness and...
Tipo: Journal article
Palavras-chave: Density-dependent recruitment; Diversity; Forest fragmentation; Seedlings; Seeds.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000200012

Communities of soil macrofauna in green spaces of an urbanizing city at east China
Provedor de dados: 97
Autores: BAO-MING,GE; ZHEN-XING,LI; DAI-ZHEN,ZHANG; HUA-BIN,ZHANG; ZONG-TANG,LIU; CHUN-LIN,ZHOU; BO-PING,TANG.
We evaluated the diversity of soil macrofauna communities inhabiting urban green spaces in Yancheng City, an urbanizing city located east of China. In the end of April 2011, the taxonomic richness, abundance and composition of soil macrofauna communities were assessed and compared among five types of green space (poplar forest, rapeseed farm, grassland in park, lawn and nursery garden) and three depth layers in the soil, with taxonomic resolution attained at the order level. Taxonomic richness (orders) and abundance were significantly different among green spaces. Diversity indices (Margalef's taxonomic richness R and Shannon-Weaver diversity index H') were higher in poplar forest, grassland in park and nursery garden than in rapeseed farm and lawn....
Tipo: Journal article
Palavras-chave: China; Diversity; Soil layer; Urbanization; Yancheng City.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000200008

Fish community structure in San Agustín Bay, Huatulco, Mexico
Provedor de dados: 97
Autores: RAMÍREZ-GUTIÉRREZ,MARTÍN; TAPIA-GARCÍA,MARGARITO; RAMOS-SANTIAGO,EDUARDO; ULLOA,RAÚL.
San Agustín bay is one of the most important bays in the Huatulco National Park because it includes the broadest coral reef surface of this park, which supports a great diversity of fish species. The importance of the present work is that describes quantitatively, for first time, the fish assemblage of this reef area. Visual censuses were realized on transects, according to the coral reef size, on coral and rocky reefs, and coral rubble environments. 64 species, 46 genus and 29 families were registered. Seasonal variation in fish assemblage was observed; reflecting the influence of pelagic shoaling species associated with the Gulf of Tehuantepec upwelling, during the dry season. Thus species were Selar crumenophthalmus, Caranx caninus, and Sardinops...
Tipo: Journal article
Palavras-chave: Huatulco National Park; Coral reef; Diversity; Density; Community.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000400003

Composition and structure of aquatic insect assemblages of Yungas mountain cloud forest streams in NW Argentina
Provedor de dados: 99
Autores: Von Ellenrieder,Natalia.
Thirty three lotic environments in the Yungas mountain cloud forest of NW Argentina were sampled both in undisturbed forest areas and sites altered by human activities. Aquatic insects of 143 taxa in 55 families were collected. Cluster analysis suggested altitude as one of the main structuring variables of aquatic insect communities in these streams, and its importance was confirmed by non-metric multidimensional scaling (NMS); the environmental parameters measured that were best correlated with the ordination were altitude, water temperature, latitude and channel variables (width, percentage of large and small woody debris, of undercut banks, cobble and coarse gravel). Multi response permutation procedures (MRPP) showed streams in well preserved areas to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Community structure; Indicator species; Biological metrics; Elmidae.
Ano: 2007
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802007000200008

New records of mosquito species (Diptera: Culicidae) from Catamarca and Santa Fe provinces, Argentina
Provedor de dados: 99
Autores: Laurito,Magdalena; Visintin,Andrés M.; Lorenzo,Pablo R.; Berrón,Clara I.; Diez,Natalia; Almirón,Walter R.
The geographical distribution of Culex acharistus, C. bidens, C. chidesteri, C. dolosus, C. interfor, C. maxi, C. saltanensis and Ochlerotatus scapularis is extended, increasing the number of mosquito species in the provinces of Catamarca, from 14 to 20, and Santa Fe, from 57 to 59.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Culex; Ochlerotatus; Distribution; Diversity.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802013000200009

Chironomid (Chironomidae: Diptera) checklist from Nahuel Huapi National Park, Patagonia, Argentina
Provedor de dados: 99
Autores: Donato,Mariano; Massaferro,Julieta; Brooks,Stephen J.
This paper presents the first inventory of modern and subfossil taxa of the Family Chironomidae (Insecta: Diptera) from Nahuel Huapi National Park in Patagonia, Argentina. The catalogued fauna contains 104 species in 48 genera and 6 sub-families for modern fauna and 52 morphotypes in 36 genera and 4 subfamilies for sub-fossil fauna.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chironomidae; Diversity; Modern fauna; Sub-fossil fauna; Southern Hemisphere.
Ano: 2008
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802008000100015

Synopsis of theAcanthosomatidae (Heteroptera) from Argentina
Provedor de dados: 99
Autores: Dellapé,Gimena.
A synopsis of the Argentinean Acanthosomatidae, including a key to genera, new distributional data and host plant records, and complementary information is provided. The tribe Blaudusini is recorded for the first time from Argentina. Currently, the family Acanthosomatidae is represented in Argentina by two subfamilies, three tribes, 14 genera, and 20 species. Most of the species are found in the Andean Patagonia, associated with native trees and shrubs from southern South America, such as Nothofagus Blume and Luma A. Gray, and with several species of berries.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pentatomoidea; Blaudusini; Diversity; Patagonia.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802016000100006

Preliminary survey and inventory of Calliphoridae and Sarcophagidae (Diptera) in the province of Corrientes, Argentina, with new records of species with forensic importance
Provedor de dados: 99
Autores: Dufek,Matias I.; Oscherov,Elena B.; Mulieri,Pablo R.
This is the first study dealing with the diversity and distribution of Calliphoridae and Sarcophagidae (Diptera) inhabiting the province of Corrientes, Argentina. The work was based on samplings at different locations within the Iberá Marshes and Mburucuyá National Park, bibliographic records, and the examination of materials deposited in several entomological collections. Seventeen species of Calliphoridae and 27 of Sarcophagidae were listed. Twenty five species are recorded for the first time from Corrientes. Four species, Argoravinia brasiliana (Lopes, 1988), Chrysomya putoria (Wiedemann, 1830), Oxyvinia excisa (Lopes, 1950) and Peckia (Euboettcheria) pascoensis (Lopes, 1990), are cited for the first time in Argentina. A list of species recorded with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calyptratae; Diversity; Forensic entomology; New records; Oestroidea.
Ano: 2015
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802015000100004

Genetic structure analysis of Mauritia flexuosa natural population from the Lençóis Maranhenses region using microsatellite markers
Provedor de dados: 63
Autores: Castro,Domingos Augusto Mendonça; Costa,Tatiana Santos; Cardoso,Ariane Santos; Ramos,Helaine Christine Cancela; López,Jorge Alberto; Diniz,Leandro Eugenio Cardamone.
ABSTRACT Buriti (Mauritia flexuosa L.f), a palm tree native to South America and widely distributed in Brazil, displays significant ecological, economic and biotechnological importance. However, the disorderly extractivism and environmental degradation of its endemic areas are leading to reductions in, and/or extinction of the buriti palm tree, causing ecological imbalance with significant economic losses for rural communities and genetic diversity. Consequently, populational genetic diversity studies have become relevant as a strategy for conserving the species. Therefore, this study evaluated the genetic structure of 10 populations from the Lençóis Maranhenses region, in the state of Maranhão, Brazil, using microsatellite markers. Results indicated that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Buriti; SSR; Preservation; Diversity; Variability.
Ano: 2022
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162022000101101

Biodiversity and distribution of arbuscular mycorrhizal fungi in Araucaria angustifolia forest
Provedor de dados: 63
Autores: Moreira,Milene; Baretta,Dilmar; Tsai,Siu Mui; Gomes-da-Costa,Sandra Maria; Cardoso,Elke Jurandy Bran Nogueira.
Araucaria angustifolia (Bert.) O. Ktze. is an endangered Brazilian coniferous tree that has been almost exterminated in the native areas because of uncontrolled wood exploitation. This tree has been shown to be highly dependent on arbuscular mycorrhizal fungi (AMF) and, therefore, AMF may be essential for forest sustainability and biological diversity. Root colonization, density and diversity of AMF spores were assessed in two Araucaria forest stands at the State Park of Alto Ribeira (PETAR), at two sampling dates: May and October. A comparison was made between a mature native stand composed of Araucaria trees mixed into a variety of tropical trees and shrubs, without any sign of anthropogenic interference (FN) and an Araucaria stand planted in 1987 (R),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian Pine; Diversity; Spore density; Root colonization; Multivariate analysis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400010

Arbuscular mycorrhizal fungal communities in native and in replanted Araucaria forest
Provedor de dados: 63
Autores: Moreira,Milene; Baretta,Dilmar; Tsai,Siu Mui; Cardoso,Elke Jurandy Bran Nogueira.
Araucaria angustifolia is an important Brazilian conifer, but it is endangered of extinction due to excessive logging. The objective of the present case study was to survey data on the diversity of AMF in Araucaria angustifolia forests, and to learn whether it is possible to discriminate between the AMF communities associated with natural, introduced, and impacted-by-anthropogenic-action ecosystems. Three ecosystems representative of the Campos do Jordão (São Paulo State, Brazil) region were selected, as follows: (i) a native climax forest, with predominance of Araucaria trees, without anthropogenic interference (NF), (ii) Araucaria forest introduced in 1959 (RE), and (iii) Araucaria forest introduced in 1958, submitted to accidental fire in July 2001...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AMF; Brazil Pine; Diversity; Spore density; Accidental fire.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000500013

Soil mesofauna in consolidated land use systems: how management affects soil and litter invertebrates
Provedor de dados: 63
Autores: Zagatto,Maurício Rumenos Guidetti; Zanão Júnior,Luiz Antônio; Pereira,Arthur Prudêncio de Araújo; Estrada-Bonilla,German; Cardoso,Elke Jurandy Bran Nogueira.
ABSTRACT: Soil mesofauna consists of small invertebrates that live in the soil or litter and are sensitive to climatic conditions, management systems, plant cover and physical or chemical soil attributes. These organisms are active in the cycling of nutrients, since they fragment the organic matter hereby accelerating microbial decomposition. The aim of this study was to evaluate the invertebrate community in no-tillage, conventional tillage, minimum tillage and secondary forest in regeneration to determine the relationship of mesofauna to litter, soil attributes, management and seasonality. Therefore, ten soil samples in each system and eight litter samples in no-tillage and the forest were taken over four seasons. These samples remained in Berlese...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; No-tillage; Multivariate analysis; Fauna density; Mites.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001200165

Impact of crop management systems on soil nematode communities in South Brazil
Provedor de dados: 63
Autores: Machado,Andressa Cristina Zamboni; Zagatto,Maurício Rumenos Guidetti; Skora Neto,Francisco; Silva,Santino Aleandro da; Zanão Júnior,Luiz Antonio.
ABSTRACT The analysis of nematode communities allows inferring consequences of management practices on the soil food web. We studied the taxonomic structure of nematode communities in preserved areas of the Atlantic forest (native forest = NF) in Ponta Grossa, Paraná State, Brazil, and in three different agroecosystems in neighboring areas to assess the effect of agricultural land use on nematode assemblages. Agroecosystems were located in a red latosol cropped during 30 years under conventional tillage (CT), no-tillage (NT), and minimal tillage (MT). We collected ten composite soil samples in each area in the summer. Nematodes were extracted by Baermann funnel and fixed with formalin. Subsequently, individuals were classified into taxonomic groups and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Diversity; Taxonomic structure; Soil indicators.
Ano: 2022
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162022000100701

สิทธิเกษตรกร: ผลกระทบจากร่างแก้ไขกฎหมายคุ้มครองพันธุ์พืช
Provedor de dados: 106
Autores: Somchai Ratanachueskul.
Agriculture has been one of the most important occupations in the Thai society from the past to the present. A considerable number of plant varieties in Thailand are partly derived from the farmers’ path of life and their customs—they exchange seeds and knowledge relating to such varieties. However, under unavoidable international trade and free market paradigm, agriculture businesses led by multinational corporations encourage and support modern agriculture by convincing farmers to cultivate for export using high yield varieties, and limiting farmers’ choice to grow crops. Under these circumstances, the principle factors of farmers’ cultivation, seeds and plant varieties among others, are transformed into private property and protected by an intellectual...
Tipo: PhysicalObject
Palavras-chave: Farmers'rights; Plant variety protection act; Plant conservation; Ownership; Seed; Diversity; Legal rights; สิทธิเกษตรกร; พ.ร.บ.คุ้มครองพันธุ์พืช; อนุรักษ์พันธุ์พืช; กรรมสิทธิ์ในเมล็ดพันธุ์; พันธุ์พืช; เมล็ดพันธุ์พืช; กฎหมายคุ้มครองพันธุ์พืช; ทรัพย์สินทางปัญญา; นักปรับปรุงพันธุ์พืช; การพัฒนาพันธุ์พืช; สิทธิทางกฎหมาย.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5734

การตรวจสอบความหลากหลายของสายพันธุ์เชื้อราสาเหตุโรคไหม้ของข้าวในประเทศไทย
Provedor de dados: 106
Autores: Poonsak Mekwatanakarn; Payorm Cobelli; Acharaporn Na Lampang Noenplab; Thanomjit Rithmontree; Kulchana Ketsuwan; Chanasirin Klinmanee; Sanguan Teang Deerith.
Rice blast disease is the major disease in rainfed lowland area of Thailand. The causal fungus of this disease is Pyricularia grisea Sacc. Variation of this fungus was higher than other rice pathogens. This report used near isogenic lines (NILs) to detect the variation, pathothype and virulence spectrum of the fungus in Thailand during 2002 - 2005. Trap blast nurseries consisted of 9 Thai local cultivars and 18 NILs were conducted at Ubon Ratchathani Rice Research Center, Khon Kaen Rice Research Center, Phrae Rice Research Center, Phitsanulok Rice Research Center, and Phatthalung Rice Research Center. Single conidia was isolated from infected rice leaves. Virulence spectrum of blast populations were screened on 18 NILs. Two thousand four hundred seventy...
Tipo: Collection
Palavras-chave: Rice; Blast disease; Pathotype; Near isogenic lines; Diversity; ข้าว; โรคไหม้; เชื้อสาเหตุ; สายพันธุ์เชื้อ; ยีนต้านทานเดี่ยว; ความหลากหลายของเชื้อ; เชื้อรา.
Ano: 2007
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5300

ความหลากหลายของสัตว์ไม่มีกระดูกสันหลังในระบบนิเวศข้าวไร่ ที่อำภอบ้านแฮด จังหวัดขอนแก่น
Provedor de dados: 106
Autores: Patchai Souksai; Yupa Hanboonsong.
The research studies an arthropod community in upland rice ecosystem at farmers’ field in Ban Had District, Khon Kaen Province, Northeast Thailand, was conducted during May to October 2011. Samples were collected using light traps, yellow sticky traps, sweep nets and visual observation methods. A total of 7,195 individual arthropods from 160 species were recorded in this study. Among the sampling methods, 140 species were recorded using light trap, followed by 108, 58 and 30 species collected by using yellow sticky trap, sweep net and visual observation, respectively. The arthropod community of this studies constituted of four guilds as phytophagous, predator, parasitoid and scavenger. The predator (60.93 % of total individuals and 47.17% of total species)...
Tipo: PhysicalObject
Palavras-chave: Arthropods; Upland rice ecosystem; Community structure; Diversity; Rice growth; Pest control program; Ban Had district; Khon Kaen province; Northeast; สัตว์ไม่มีกระดูกสันหลัง; ระบบนิเวศข้าวไร่; โครงสร้างประชากร; อนุกรมวิธาน; ความหลากหลาย; จ.ขอนแก่น.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5794

Variability of the anthracnose fungus Colletotrichum graminicola in sorghum genotype mixtures
Provedor de dados: 102
Autores: Valério,Henrique M.; Casela,Carlos R.; Resende,Maria A.; Santos,Fredolino G.
This paper reports partial results obtained on the variability of Colletotrichum graminicola developed in response to the host diversity generated by three-line combination of sorghum (Sorghum bicolor) genotypes. Nine sorghum lines were used in this study: CMSXS210B, CMSXS112B, CMSXS215B, CMSXS221B, CMSXS169R, CMSXS180R, CMSXS182R, CMSXS227R, and CMSXS116R. A total of 39 treatments on mixtures and pure stands of the component lines were evaluated in the field for the development of anthracnose, as a natural epidemic. Samples of the single spore isolates of the pathogen of each treatment indicated a reduction in the phenotypic diversity and an increase in the frequency of more complex races in genotype mixtures in relation to the pure stands of each genotype.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Sorghum bicolor; Diseases; Virulence; Diversity.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582004000500019

Molecular characterization of Brazilian strains of Xanthomonas campestris pv. viticola by rep-PCR fingerprinting
Provedor de dados: 102
Autores: Trindade,Loiselene C.; Lima,Mirtes F.; Ferreira,Marisa A. S. V.
Bacterial canker of grapevine (Vitis vinifera), caused by Xanthomonas campestris pv. viticola was first detected in Brazil in 1998, affecting grapevines in the São Francisco river basin, state of Pernambuco. The disease was also reported in Juazeiro, Bahia and later in Piauí and Ceará. Due to its limited geographical distribution and relatively recent detection in Brazil, very little is known about the pathogen's biology and diversity. Repetitive DNA based-PCR (rep-PCR) profiles were generated from purified bacterial DNA of 40 field strains of X. campestris pv. viticola, collected between 1998 and 2001 in the states of Pernambuco, Bahia and Piauí. Combined analysis of the PCR patterns obtained with primers REP, ERIC and BOX, showed a high degree of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Grapevine bacterial canker; Vitis vinifera; Repetitive DNA.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000100008

Diversidade de morcegos (Chiroptera, Mammalia) em fragmentos florestais no estado do Paraná, Brasil
Provedor de dados: 104
Autores: Reis,Nelio Roberto dos; Peracchi,Adriano Lúcio; Sekiama,Margareth Lumy; Lima,Isaac Passos de.
The bay of the Tibagi river, a place which goes through quick environmental alterations, has three forest fragments: the "Floresta Nacional do Irati" (3.572 ha), the "Reserva Biológica da Klabin" (11.116 ha) and the "Parque Estadual Mata dos Godoy" (680 ha). Here, Myotis ruber (E. Geoffroy, 1806) and Chiroderma doriae Thomas, 1891 can be found, these are threatened bats, and three species, Pygoderma bilabiatum (Wagner, 1843), Myotis levis (I. Geoffroy, 1824) and Rogheessa tumida H. Allen, 1866, which are presumably threatened. Using the same effort of capture in the three places, it was stated that the "Floresta Nacional do Irati" with low vegetation diversity, showed nine species of bats. The "Parque Estadual Mata dos Godoy", although it's five times...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chiroptera; Bats; Diversity; Forest fragments.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000300015

Diversidade de espécies e densidade de ninhos de abelhas sociais sem ferrão (Hymenoptera, Apidae, Meliponinae) em floresta de terra firme na Amazônia central
Provedor de dados: 104
Autores: Oliveira,Marcio L.; Morato,Elder F.; Garcia,Marcos V.B.
Stingless bees were collected between 1984 and 1990 in continuous forest, forest fragments and cleared areas 90 Km north of Manaus, Amazonas, Brazil. Several methods were employed. a total of 54 species of 21 genera were collected including two undescribed species of Plebeia Schwarz, 1938. The most abundant genera were Trigona Jurine, 1807; Melipona Illiger, 1806; Partamona Schwarz, 1939 and Tetragona Lepeletier, 1825. The most abundant species were Trigona crassipes (Fabricius, 1793) and T. fulviventris Guérin, 1835. Fruit fly traps baited with fragrances for euglossine bees showed to be an useful method for stingless bee collection too. The study area showed a great richness in relation to other regions of the world. However the density of nests found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Nest density; Conservation; Amazônia; Stingless bees.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000100004

Levantamento da fauna de abelhas silvestres na "zona da mata" de Minas Gerais: III. Mata secundária na região de Viçosa (Hymenoptera, Apoidea)
Provedor de dados: 104
Autores: Cure,José Ricardo; Thiengo,Marciana; Silveira,Fernando A.; Rocha,Luis B.
The outcome of a wild bee fauna survey in a secondary forest is reported. Sampling was carried out mainly on herbaceous and shrubby vegetation under and at the border of the forest. Results are compared with data collected with the same methodology from a previously surveyed grassland nearby. The secondary forest was richer in Anthophoridae and Apidae species, and less diverse in Megachilidae. Similarity between the two habitats was low. Several unidentified species of Ceratinula, Trichocerapis mirabilis and the stingless bees Melipona bicolor, M. quadrifasciata, M. marginata, Paratrigona subnuda, Scaptotrigona tubiba and S. xanthotricha, are among the species dependent on the forest environment to survive. Bee population densities in the forest understory...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apoidea; Diversity; Abundance; Neotropics.
Ano: 1992
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000200008

Richness and diversity of aphids (Homoptera, Aphididae) along an altitudinal gradient in the Serra do Mar, Paraná, Brazil
Provedor de dados: 104
Autores: Lazzarotto,Crisleide Maria; Lázzari,Sonia Maria Noemberg.
The lack of bioecological studies on aphids in regions with complex floristic and faunistic structure, such as the Atlantic Tropical Rain Forest, lead to the initiation of this research. The objectives were to determine species richness and diversity of aphids and to investigate the influence of altitude and environmental perturbations on aphid populations. The collections were made with yellow pan traps at 11 sites with altitudes from -10 m to 1000 m above sea level (a.s.l.), in the Serra do Mar, Paraná, Brazil, from December 1993 to December 1994. Richness and diversity of aphids were greatest at 85 m a.s.l. This site was characterized by three distinct floral communities: primary vegetation, secondaiy vegetation in successional stages, and secondary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Diversity; Equitability; Richness; Altitude.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000400016

Ephemeroptera, Plecoptera and Trichoptera assemblages in two Atlantic Rainforest streams, Southeastern Brazil
Provedor de dados: 104
Autores: Crisci-Bispo,Vera L.; Bispo,Pitágoras C.; Froehlich,Claudio G.
Assemblages of Ephemeroptera, Plecoptera and Trichoptera (EPT) of rocky substrates were studied in two streams of the Intervales State Park. Monthly collections with a Surber sampler (10 random sampling units, 1m²) were carried out from September 1999 to September 2000 and quarterly from December 2000 to September 2001 in the Bocaina and Água Comprida Streams. The EPT fauna in the Bocaina Stream was more diversified and more abundant than in the Água Comprida Stream. The EPT fauna was quite different in the two streams both in composition as in functional aspects. The results of this study indicate that there was not a clear seasonal pattern in the temporal variation of density.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic insects; Diversity; EPT; Lotic environments.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200007

Comments on plant-herbivore-parasitoid interactions in two cerrado areas of Southern Brazil
Provedor de dados: 104
Autores: Caldas,Astrid; Passos,Fernando de C.
This work describes some interactions between lepidopteran larvae and braconid parasitoids on a group of plants at two sites. There was no significant difference in parasitoid diversity between the sites (Shannon index, p&lt;0.05), and similarity was 62.5%, estimated through Sorensen's index. The diversity of hosts was also not different (p&lt;0.05), but the similarity of host diversity was only 28.5%. This suggests that the parasitoids have strategies for maintaining similar reproduction rates, population densities and communities in areas with different potential hosts.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Braconidae; Diversity; Community; Lepidoptera; Similarity.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200010

Family composition of Muscoidea communities in adjacent areas of secondary tropical forest and pasture field in Rio de Janeiro, Brazil
Provedor de dados: 104
Autores: Caldas,Astrid; Almeida,Josimar Ribeiro de; A'Almeida,José Mario.
The Muscoidea community of two adjacent areas was sampled. For eight months one area was of secondary tropical forest and the other was an open field used for cattle grazing. The main purpose of the study was to investigate if there would be any differences in abundance, family diversity, community composition and bait attractiveness. Results suggest that the change in the environment resulted in a reduction of overall abundance, but not a reduced diversity in terms of families. None of the families was led to a marked decrease or increase, as might be expected in a disturbed environment. The changes observed in the community composition were not significant for the distribution and abundance rank of the families within that community. The environmental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Muscoidea community; Abundance; Bait attractiveness; Deforestation; Diversity.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300027

Comunidade de Odonata (Insecta) em áreas naturais de Cerrado e monocultura no nordeste do Estado de São Paulo, Brasil: relação entre o uso do solo e a riqueza faunística
Provedor de dados: 104
Autores: Ferreira-Peruquetti,Patrícia S.; Fonseca-Gessner,Alaíde A.
Stream ecosystems may be strongly influenced in different ways by land use. The effects of land-cover patterns on Odonata community were studied in eight streams and seven lakes-dams of northeastern São Paulo State. The pattern analyzed was monoculture (sugar cane) vs. nature reserve in terms of Odonata species richness and similarity. Eighty-five Odonata species were sampled. The species richness was higher in the monoculture (33 species) than nature reserve (30 species) and 22 species were common to both areas. There was not verified relationship between land use and physical or chemical characteristics of the streams or lakes-dams water. These results suggest that some Odonata species are benefited and other affected by anthropogenic actions, although...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Diversity; Land use; Odonata; Species richness.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200008

Colonização ictiofaunística do Reservatório de Itaipu e áreas adjacentes
Provedor de dados: 104
Autores: Benedito Cecilio,Evanilde; Agostinho,Angelo Antonio; Júlio Jr,Horácio Ferreira; Pavanelli,Carla Simone.
Samples were taken from November 1983 to October 1989 in sites along the main body of the Itaipu reservoir and its area of influence to evaluate the impacts of this reservoir on ichthyofauna and to provide information about the colonization process in the dammed area. The ichthyofaunistic similarity between the sites was analysed during the studied period. Spatial and temporal variations of the ichthyofaunistic diversity were also done, using Shannon-Winer Index of Diversity, eveness and species richness, comparing the results with those obtained before the damming. After Itaipu Reservoir formation, it was observed significative alteration in specific abundance and ichthyofauna structure of the Paraná River, with an increase in species number in ali...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyofauna; Paraná river; Itaipu reservoir; Diversity; Similarity.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100001

Levantamento da fauna entomológica no estado do Paraná III: Saturniidae (Lepidoptera)
Provedor de dados: 104
Autores: Marinoni,Renato C.; Dutra,Renato R.C.; Casagrande,Mirna M.
In addition to the Survey of the Entomological Fauna in Paraná State, the family Saturniidae was studied in its ecological and faunistic aspects. The material was captured using one light trap installed in eight different sites of the State: Antonina, São José dos Pinhais, Colombo, Ponta Grossa, Telêmaco Borba, Jundiaí do Sul, Guarapuava and Fênix, from October 1986 to September 1987. The total number of specimens and means values of capture were analyzed. Indices of diversity and evenness were used to discuss richness and dominance of species in each locality. Besides using ecological indices, the data were also compared by Clustering Analysts, Principal Coordinate Analysis, Minimum Spanning Tree and Linear Correlation Coefficient. The results were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saturniidae; Faunistic; Diversity; Community structure; Paraná.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000200016

Diversity and abundance of litter frogs at altitudinal sites at Serra do Japi, southeastern Brazil
Provedor de dados: 104
Autores: Giaretta,Ariovaldo Antonio; Sawaya,Ricardo J.; Machado,Glauco; Araújo,Márcio S.; Facure,Kátia G.; Medeiros,Hermes F. de; Nunes,Renato.
It was sampled the litter frogs at altitudinal sites of a semideciduous mesophytic forest located at Sena do Japi (Jundiaí, São Paulo, 23º17'S, 47º00'W, 800-1300m altitude, 1500mm rain/year). Forty two plots of 8x8m were sampled in the dry/cold season of 1995: 21 at a Higher Site (HS) (1000m) and 21 at a Lower Site (LS) (850m). The plots were evenly located near, mid-distance, and far from the stream-bed. It was found a total of five species, three at each site. Eleutherodactylus guentheri comprised 83% of the individuals at HS and E. juipoca 67% at LS. The density of individuals was higher at HS and near the stream. The greater density at HS may be due to greater humidity there, provided by mist. The frogs may aggregate in wetter places (stream edges) in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachycephalus; Eleutherodactylus; Hyla; Litter frogs; Diversity; Southeastern Brazil.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000200008

Composição de gastrópodes terrestres em duas áreas do Centro de Estudos Ambientais e Desenvolvimento Sustentado (CEADS), Vila Dois Rios, Ilha Grande, Rio de Janeiro, Brasil: um estudo-piloto
Provedor de dados: 104
Autores: Santos,Sonia Barbosa dos; Monteiro,Daniele Pedrosa.
A survey of the Ilha Grande land snails was carried out in order to compare the diversity and similarity among two regions of secondary Atlantic Rain Forest. The diversity was estimated using the richness and the equitatibility; the alpha diversity was calculated using the Simpson index (γ). The Sörensen and Jaccard indexes were used to calculate the similarity. A quantitative survey of two 600 m² area, one in each studied region, recorded 336 individuals snails distributed in 23 species and 13 families. The region with more altered secondary forest showed higher richness (17) and diversity (γ = 3,6) than the region more preserved (richness = 14; γ = 2,78), but, the same equitatibility (0,20). The similarity was medium by Jaccard index (IJ = 0,52) and low...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Terrestrial gastropods; Diversity; Ecology; Rio de Janeiro; Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000500014

Abundância, riqueza e diversidade de abelhas Euglossinae (Hymenoptera, Apidae) em florestas contínuas de terra firme na Amazônia Central, Brasil
Provedor de dados: 104
Autores: Oliveira,Marcio Luiz de; Campos,Lúcio Antônio de Oliveira.
The fauna of Euglossinae bees were studied in two areas of "terra firme" continuous forest in the Central Amazon. Brazil. During one year (september/1989-august/1990) the collections were done fortnightly, using traps with eight kinds of seents baits. The traps were placed in the understory and in the tree crowns. The continuous forest of "terra firme" near Manaus are among those with the highest speeies richness of Euglossinae in the Neotropics. The species richness was higher than that found in other studies carried out in Brazil also. One study area had higher species richness and abundance, while species diversity was higher in another one. The diversity was different significally between the two areas.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apidae; Euglossinae; Abundance; Amazon; Diversity.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000300009

Structure of a bat assemblage (Mammalia, Chiroptera) in Serra do Caraça Reserve, South-east Brazil
Provedor de dados: 104
Autores: Falcão,Fábio de C.; Rebêlo,Victor Fontão; Talamoni,Sônia A.
The Serra do Caraça Reserve is situated in the southern portion of the Espinhaço Mountain Range, and contains areas of "campos de altitude", "cerrado" and atlantic forest. This study had as its objective the registering of the bats species that occur in the reserve. The data collection was carried out in one year through monthly samplings, using mist nets set on trails, and also through hand capture. A total of 246 individuals were collected (0.72 bats/net-hour), distributed across 15 species, belonging to the families Phyllostomidae (83.0%; nine species), Vespertilionidae (12.5%; three species) and Molossidae (4.5%; three species). The most abundant species were Sturnira lilium (E. Geoffroy, 1810) (n = 121, 60.5%), Myotis nigricans (Schinz, 1821) (n = 21,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bats; Chiroptera; Diversity; RPPN Serra do Caraça.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200027

A rapid assessment of the decapod fauna in the Rio Tahuamanu and Rio Manuripi Basins, with new records of shrimps and crabs for Bolivia (Crustacea, Decapoda, Palaemonidae, Sergestidae, Trichodactylidae)
Provedor de dados: 104
Autores: Magalhães,Célio.
Results of a decapad fauna survey canducted during the AquaRAP expeditian to Río Tahuamanu and Río Manuripi Basins, in the Departmentaf Panda, Balivia, in September, 1996 are presented. Ten species of shrimps and crabs, representing three families and six genera were faund. New recards for Balivia were Macrobrachium depressimanum Pereira, 1993, Macrobrachium brasiliense (Heller, 1862), Acetes paraguayensis Hansen, 1919, Sylviocarcinus devillei H. Milne-Edwards, 1853, Sylviocarcinus maldonadoensis (Pretzmann, 1978), and valdivia serrata White, 1847.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Balivia; Decapada; Diversity; Amazon Basin; Newrecord.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400014

Bats from Fazenda Intervales, Southeastern Brazil: species account and comparison between different sampling methods
Provedor de dados: 104
Autores: Portfors,Christine V.; Fenton,M. Brock; Aguiar,Ludmilla M. de S.; Baumgarten,Julio E.; Vonhof,Maarten J.; Bouchard,Sylvie; Faria,Deborah M. de; Pedro,Wagner A.; Rauntenbach,Naas I. L.; Zortea,Marlon.
Assessing the composition of an area's bat fauna is typically accomplished by using captures or by monitoring echolocation calls with bat detectors. The two methods may not provide the same data regarding species composition. Mist nets and harp traps may be biased towards sampling low flying species, and bat detectors biased towards detecting high intensity echolocators. A comparison of the bat fauna of Fazenda Intervales, southeastern Brazil, as revealed by mist nets and harp trap captures, checking roosts and by monitoring echolocation calls of flying bats illustrates this point. A total of 17 species of bats was sampled. Fourteen bat species were captured and the echolocation calls of 12 species were recorded, three of them not revealed by mist nets or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic rain forest; Bats; Bat detector; Chiroptera; Diversity; Echolocation; Sampling methods; Southeastern Brazil.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000200022

Diversidade da ictiofauna de poças de maré da praia do Cabo Branco, João Pessoa, Paraíba, Brasil
Provedor de dados: 104
Autores: Rosa,Ricardo S; Rosa,Ierecê L; Rocha,Luiz A.
A survey of the tidal pool fish community was carried out between february/1987 and january/1988, at Cabo Branco Beach, João Pessoa, Paraíba, Brazil. Specimens were collected monthly at low tide, using rotenone. A total of 3143 specimens was obtained. The most speciose families were Ophichthidae (14% of the total number of species), Mugilidae (11%) and Muraenidae (9%), and the most representative ones in number of individuais were Gobiidae (48%), Pomacentridae (13%) and Labrisomidae (10%). The main resident species were Bathygobius soporator (Valenciennes, 1837) and Abudefduf saxalilis (Linnaeus, 1758). The presence of a large number of juveniles in the pools indicated the importance of the studied sites as nursery áreas for several fish species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyofauna; Diversity; Paraíba; Brazil.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100019

Levantamento da fauna entomológica no Estado do Paraná. IV. Sphingidae (Lepidoptera): diversidade alfa e estrutura de comunidade
Provedor de dados: 104
Autores: Marinoni,Renato C.; Dutra,Renato R.C.; Mielke,Olaf H.H.
In addition to the Survey of the Entomological Fauna in Paraná State, the Sphingidae was studied in its ecological and faunistic aspects. The material was collected using one light trap installed in eight different sites of the State (Antonina, São José dos Pinhais, Colombo, Ponta Grossa, Telêmaco Borba, Jundiaí do Sul, Guarapuava, and Fênix), from October 1986 to September 1987. A total of 813 specimens and 55 species was captured. The highest values of diversity (Brillouin and Shannon) was observed in São José dos Pinhais and Jundiaí do Sul; the highest values of evenness (Berger &amp;amp; Parker, and Simpson) in São José dos Pinhais and Antonina. Besides using ecological indices, the data were also compared by Clustering Analysis and Linear Correlation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sphingidae; Diversity; Community structure; Paraná State.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000600023

Levantamento da fauna entomológica no estado do Paraná: II. Ctenuchidae (Lepidoptera)
Provedor de dados: 104
Autores: Marinoni,Renato C.; Dutra,Renato R.C.
In addition to the Survey of the Entomological Fauna in Paraná State, the Ctenuchidae were studied in its ecological and faunistic aspects. The material was collected using one light trap installed in eight different sites of the State: Antonina, São José dos Pinhais, Colombo, Ponta Grossa, Telêmaco Borba, Jundiaí do Sul, Guarapuava and Fênix, from October 1986 to September 1987. The total number of specimens and means values of capture were analyzed. Indices of diversity and evenness were used to discuss richness and dominance of species in each locality. Besides using ecological indices, the data were also compared by Clustering Analysis, Principal Coordinate Analysis and Linear Correlation Coefficient. The results were compared with meteorological and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ctenuchidae; Faunistic; Diversity; Community structure; Paraná State.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200014

Pteropoda (Gastropoda, Thecosomata e Gymnosomata) coligidos ao largo dos arquipélagos de São Pedro e São Paulo, costa nordeste, Brasil
Provedor de dados: 104
Autores: Oliveira,Valdeni Soares de; Larrazábal,Maria Eduarda L.
Pteropoda studies were carried out offshore São Pedro and São Paulo Archipelago (0º56'2"N e 29º20'6"W) to assess biodiversity and spatial distribution. A Bongo net (mesh size 300 micrometer) was hauled obliquely from a depth between 0 and 50 m and Oand 100 m by the REVIZEE-SCORE/NE I oceanographic expedition on board of the Brazilian Navy Oceanographic Ship Antares. Samples were collected at 16 stations from September to October 1995. A total of 880 organisms distributed in 20 species, 14 genera and 9 families were identified. At the layer 0-50 m, Creseis virgula (Rang (828) was the most frequent species (71.43%), followed by Limacina inflata (Orbigny, (836) and Cavolinia inflexa (Lesueur, 18(3) (64.28%, each). ln terms of relative abundance outranked L....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pteropoda; Diversity; Spatial distribution; North-east; Brazil.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500016

Ecologia de comunidade de Bethylidae (Hymenoptera, Chrysidoidea) da Reserva Ecológica do Roncador, Brasília, Distrito Federal, Brasil
Provedor de dados: 104
Autores: Azevedo,Celso Oliveira; Helmer,José Luiz.
Bethylidae specimens from the Reserve were studied in its ecological and faunistic aspects. The material was collected by Malaise and Window traps simultaneously in ten different areas of the Reserve during four years. The total number of genera and specimens were analyzed. Indices of diversity and evenness were used for characterizing the community ecology. Clustering analysis of localities and genera were provided. Nine genera of Bethylidae were found in the Reserve, being Pseudisobrachium Kieffer, 1904 and Apenesia Westwood, 1874 the most common ones. Window trap was more efficient than Malaise trap in terms of genus diversity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hymenoptera Bethylidae; Community ecology; Diversity; Cerrado.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400021

Diversidade de Euglossinae (Hymenoptera, Apidae) em dois fragmentos de Mata Atlântica localizados na região urbana de João Pessoa, Paraíba, Brasil
Provedor de dados: 104
Autores: Bezerra,Cleomar Porto; Martins,Celso Feitosa.
The use of fragrances to attract males of Euglossinae bees has been an important tool to increase the knowledge of the group. In the Northeastern of Brazil, studies on euglossine bees are still uncommon, mainly in urban areas. The goals of this study are to identify the Euglossinae species composition, to know the diversity and the community structure of Euglossinae species, verify their preferences for different fragrances and evaluate the phenology of these species, in two Atlantic Forest fragments of the city of João Pessoa, Paraíba state, Brazil. Bees were sampled at 15 days intervals, over the course of one year, from 8:00 to 17:00 hours, through the use of traps baited with seven types of fragrances. In both areas, 1082 individuals belonging to nine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euglossinae bees; Diversity; Community structure; Atlantic Forest.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000300018

Identification of arbuscular mycorrhizal fungi in plantain producing municipalities in department of Cordoba, Colombia
Provedor de dados: 109
Autores: Cabrales-Herrera,Eliecer Miguel; Barrera-Violeth,José Luis; Novoa-Yanez,Rafael.
Abstract Currently plantain cultivation makes excessive use of agrochemicals, condition that threatens a sustainable production system and leads to the degradation of the environment, reducing the quality of the products. Based on the foregoing, and in order to expand knowledge of the arbuscular mycorrhizal fungi associated with plantain cultivation, the aim of this study was to isolate and identify fungal morphotypes that form symbiosis with plantain (Musa AAB Simmonds cv. Hartón), in farms from seven municipalities of the department of Córdoba, Colombia. In each farm, soil samples from the first 20 cm of soil depth in the rhizosphere area were taken to the soil laboratory at Universidad de Córdoba, Colombia, where spores were extracted using the OHM and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endomycorrhizae; Musa AAB; Diversity; Dominance; Glomus; Morphotype.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100017

Metazoan parasite communities of Leporinus macrocephalus (Characiformes: Anostomidae) in cultivation systems in the western Amazon, Brazil
Provedor de dados: 36
Autores: MARTINS,Williane M. de O.; JUSTO,Marcia C. N.; CÁRDENAS,Melissa Q.; COHEN,Simone C.
ABSTRACT In the Amazon, the growing demand for fish has been boosting the expansion of fish farms. However, the intensification of cultivation can generate disequilibrium in the parasite-host environment, predisposing fish to parasitic infections. The objective of this study was to evaluate the community structure of metazoan parasites in cultivation systems of piauçu, Leporinus macrocephalus, in the state of Acre, Brazil. We examined 100 specimens from a semi-intensive cultivation system (earth tanks) and 100 from an extensive system (dams). Overall 66.5% of the hosts were parasitized. We collected 1,240 parasite specimens, classified in 15 metazoan taxa (10 monogenoidean, one digenean and four nematodes). The parasite prevalence was higher by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Digenea; Monogenoidea; Nematoda.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400301

Cross-scale determinants of palm species distribution
Provedor de dados: 36
Autores: Salm,Rodolfo; Salles,Nilson Vicente de; Alonso,Wladimir J.; Schuck-Paim,Cynthia.
We investigate palm species distribution, richness and abundance along the Mokoti, a seasonally-dry river of southeastern Amazon and compare it to the patterns observed at a large scale, comprising the entire Brazilian territory. A total of 694 palms belonging to 10 species were sampled at the Mokoti River basin. Although the species showed diverse distribution patterns, we found that local palm abundance, richness and tree basal area were significantly higher from the hills to the bottomlands of the study region, revealing a positive association of these measures with moisture. The analyses at the larger spatial scale also showed a strong influence of vapor pressure (a measure of moisture content of the air, in turn modulated by temperature) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Diversity; Moisture; Palms; Tropical forests.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672007000100002

Metazoan fauna parasitizing Peckoltia braueri and Pterygoplichthys pardalis (Loricariidae) catfishes from the northeastern Brazilian Amazon
Provedor de dados: 36
Autores: CARDOSO,Adriele Carolina Franco; OLIVEIRA,Marcos Sidney Brito; NEVES,Ligia Rigôr; TAVARES-DIAS,Marcos.
ABSTRACT This study investigated the metazoan parasite fauna in Peckoltia braueri and Pterygoplichthys pardalis from a tributary of the Amazon River system, in northern Brazil. In P. braueri, 630 parasites were collected, belonging to Unilatus unilatus, Nothogyrodactylus sp., Genarchella genarchella, Proteocephalus sp., Gorytocephalus elongorchis, Dolops longicauda and Hirudinea gen. sp., with a dominance of monogenean species. In P. pardalis, 120 parasites were collected, belonging to U. unilatus, Acanthostomum gnerii and Gorytocephalus elongorchis, and this acanthocephalan was the dominant species. In both hosts, the parasites presented clumped distribution, high prevalence, low abundance, low Shannon diversity, and low species richness, with a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digenea; Diversity; Helminths; Parasites; Freshwater fishes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200147

Environmental determinants for natural regeneration of gallery forest at the Cerrado/Amazonia boundaries in Brazil
Provedor de dados: 36
Autores: Marimon,Beatriz Schwantes; Felfili,Jeanine Maria; Lima,Edson de Souza; Duarte,Wânia M. Gonçalves; Marimon-Júnior,Ben Hur.
Natural regeneration and structure and their relationship to environmental variables were studied in three sections of a gallery forest, in Eastern Mato Grosso, Brazil (14º43′S and 52º21′W). The assumption was that natural regeneration is constrained by environmental determinants at all stages of development of the tree community. The objective was to analyse the forest structure and to verify the relationship between species distribution and abundance at different stages of regeneration and environmental variables. In each section, 47 contiguous (10x10m) permanent plots were established to sample trees (gbh≥15cm), following a systematic design. Seedlings (0.01 to 1m height), saplings (1.01 to 2m) and poles (from 2.01m height to gbh&lt;15cm) were sampled...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Diversity; Riparian forest; Soils; Tropics.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672010000100014

Diversity of metazoan parasites in Colossoma macropomum (Serrasalmidae) from the lower Jari River, a tributary of the Amazonas River in Brazil
Provedor de dados: 36
Autores: GONÇALVES,Bianca Barata; OLIVEIRA,Marcos Sidney Brito; BORGES,William Felix; SANTOS,Gracienhe Gomes; TAVARES-DIAS,Marcos.
ABSTRACT This study investigated the diversity of metazoan parasites in Colossoma macropomum from the Jari River, in the eastern Amazon, northern Brazil. We collected a total of 4966 parasites from 34 fishes, including monogeneans (Anacanthorus spathulatus, Mymarothecium boegeri, Notozothecium janauachensis and Linguadactyloides brinkmanni), nematodes (Spectatus spectatus larvae, Contracaecum sp. larvae andProcamallanus (Spirocamallanus) inopinatus), digeneans (Cladorchiidae metacercariae), acanthocephalans (Neoechinorhynchus buttnerae), crustaceans (Ergasilus turucuyus, Argulus multicolor, Perulernaea gamitanae and Braga patagonica), mites and leeches. The dominance was of monogenean species, found in the gills of the hosts. The parasites exhibited high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregation; Diversity; Endoparasites; Freshwater fish.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000300211

Patterns of mollusc distribution in mangroves from the São Marcos Bay, coast of Maranhão State, Brazil
Provedor de dados: 36
Autores: RODRIGUES,Carlos A. L.; RIBEIRO,Rannyele P.; SANTOS,Nayara B.; ALMEIDA,Zafira S.
ABSTRACT The diversity and distribution of molluscs from the Amazon Coast of Maranhão State, Brazil, are poorly understood. The aim of this study was to investigate how molluscs in two mangrove creeks (Buenos Aires and Tronco) at the São Marcos Bay, coast of the Maranhão State, respond to spatial and temporal variations in the environment. Sampling was performed in the intertidal area along three zones established using a straight line transect of 100 m. Abiotic variables of water and sediment were measured at each creek. We found 5,912 specimens belonging to 23 species and 15 families of epifaunal and infaunal molluscs. The patterns of their distribution in the two creeks were different. Salinity, dissolved oxygen, and rainfall were the main variables...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benthic fauna; Diversity; Littoraria; Melampus; Salt creek.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400391

Composition and structure of the fig wasp community in Amazonia
Provedor de dados: 36
Autores: CASTRO,Raquel Ribeiro de Souza; REZENDE,Alinne Costa Cavalcante; ROQUE,Rosemary Aparecida; JUSTINIANO,Silvia Cassia Brandão; SANTOS,Otilene dos Anjos.
An understanding of the complex ecological interaction between fig wasps and their host plants in Amazonia requires previous knowledge of their distribution and diversity. The objective of this study was to describe the composition and structure of the wasp community associated with four species of Ficus in the municipal area of Manaus, Amazonas, Brazil. A total of 600 syconia from four species were collected. The study species were: Ficus obtusifolia Kunth; Ficus citrifolia Mill; F. americana subspecies guianensis Desv. form mathewsii; and F. americana subspecies guianensis Desv. form parkeriana. Statistical analyses were used to examine the relationship between fig wasp diversity and syconium diameter, and the effect of non-pollinating wasps on numbers...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Figs; Diversity; Brazilian Amazon.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000400355

Cholini (Coleoptera: Curculionidae: Molytinae) housed in the Invertebrate Collection of the Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
Provedor de dados: 36
Autores: Barbosa,Márcio Luís Leitão; Ferreira,Isabela Andrade; Fonseca,Claudio Ruy Vasconcelos da; Gouveia,Fernando Bernardo Pinto.
In Brazilian Amazonia, Cholini (Coleoptera, Curculionidae, Molytinae) is represented by 53 species distributed in seven genera: Ameris Dejean, 1821; Cholus Germar, 1824; Homalinotus Sahlberg, 1823; Lobaspis Chevrolat, 1881; Odontoderes Sahlberg, 1823; Ozopherus Pascoe, 1872 and Rhinastus Schoenherr, 1825. This work documents the species of Cholini housed in the Invertebrate Collection of the Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil and gives the geographical and biological data associated with them. A total of 186 Cholini specimens were identified as belonging to 14 species (13 from Brazilian Amazonia) and five genera (Cholus, Homalinotus, Odontoderes, Ozopherus and Rhinastus). Only 24% of the Cholini species reported from Brazilian...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Biology; Collection; Diversity; Geographical distribution.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672011000300010

Bat survey of the lower Juruena River and five new records for the state of Mato Grosso, Brazil
Provedor de dados: 36
Autores: DALPONTE,Júlio C.; GREGORIN,Renato; ESTEVES-COSTA,Vanderléia A.; ROCHA,Ednaldo C.; MARCELINO,Rodrigo.
ABSTRACT The northern Brazilian state of Mato Grosso is considered an important biogeographical region, but has many sampling gaps. Apart from the well-documented non volant mammal community in the region, the bat fauna still poorly recorded. The aim of this study was to record the bat species of Juruena National Park, northern Mato Grosso, Brazil. Nineteen sites were sampled using mist-nets placed at ground level and near potential bat roosts. We collected 115 individuals belonging to 35 species and five families, which increased the number of species known for Mato Grosso´s Amazon from 86 to 91. The five new records were: Peropteryx kappleri, Peropteryx leucoptera, Lonchorhina inusitata, Tonatia saurophila, and Artibeus concolor. Our results pointed out...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Chiroptera; Diversity; Range extension; Southern Amazon.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000200227

Floristic composition and diversity of Amazonian rainforest bryophytes in the state of Acre, Brazil
Provedor de dados: 36
Autores: Costa,Denise Pinheiro da.
Bryophyte diversity in Amazonian Brazil is high, presently recorded at 514 species distributed among 36 families and 89 genera. Comparisions of species richness among the Amazonian states of Brazil suggests that the bryoflora of Acre is still underestimated, presently recorded at 106 species distributed among 33 families and 63 genera. After two field trips, the diversity increased 50% showing that the bryoflora is still poorly known. Collection data and comments on morphology, ecology and distribution are given for sixty-two species of bryophytes collected in the state of Acre, Brazil, which are new (fifty-two species) or interesting floristic records (ten species). Microlejeunea crenulifolia (Gottsche) Steph. and Stictolejeunea balfourdii Mitt. are new...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Bryophyte; Acre; Brazil.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672003000300006

Phenotypic and genotypic characterization and compatibility among genotypes to select elite clones of cupuassu
Provedor de dados: 36
Autores: ALVES,Rafael Moysés; SILVA,Carlos Rogério de Sousa; ALBUQUERQUE,Paulo Sérgio Bevilaqua de; SANTOS,Vinicius Silva dos.
ABSTRACT The expansion of the genetic base of cultivated materials is an ongoing activity of the cupuassu (Theobroma grandiflorum) breeding program. However, the parents involved need to be genotypically and phenotypically characterized to ensure compatibility of crossings, as well as to assist in the selection of more promising individuals for hybridization. This study aimed to identify and select T. grandiflorum clones that are compatible and genetically divergent using tools such as the estimates of genotypic, phenotypic, and combined distances, as well as the compatibility rates among clones. The genetic distance analysis of the clones was performed with 14 heterologous microsatellite primers of cocoa (Theobroma cacao) that amplify the DNA of cupuassu....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microsatellites; Tropical fruit; Diversity; Plant breeding; Theobroma grandiflorum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300175

Structural and successional variability of periphytic algal community in a Amazonian lake during the dry and rainy season (Rio Branco, Acre)
Provedor de dados: 36
Autores: França,Raquel C.S; Lopes,Maria Rosélia Marques; Ferragut,Carla.
The colonization process and successional patterns of a periphytic algal community were evaluated in a Amazonian Viveiro Lake (Rio Branco, Acre, Brazil). Sampling was performed over a period of 35 days; at four-day intervals for 20 days, and then at five-day intervals. Water sampling for physical, chemical and biological analyses was done during the dry and rainy season. Glass slides were used as artificial substrates for periphyton colonization. The structural community was evaluated through population density, algae class, diversity indices and descriptive species. Species richness, diversity and evenness increased as succession progressed. While density of Bacillariophyceae, Euglenophyceae and Zygnemaphyceae increased with succession, Cyanobacteria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Periphyton; Colonization; Succession; Diversity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672011000200010

STRUCTURE OF A POLYCHAETE COMMUNITY IN A MANGROVE IN THE NORTHERN COAST OF BRAZIL
Provedor de dados: 37
Autores: TAVARES CUTRIM,Allana Stéphanie; SANTOS SOUSA,Lorena Karine; PASSOS RIBEIRO,Rannyele; DE OLIVEIRA,Verônica Maria; SILVA DE ALMEIDA,Zafira da.
ABSTRACT Polychaetes play an important role in the structure and functioning of benthic communities in mangroves; however, knowledge about these organisms in the Maranhão Amazon coast is scarcity. This study analyzed the ecological aspects of polychaete community in the Quebra Pote mangrove in Maranhão State. Four sampling campaigns were carried out during both rainy and dry periods between November 2013 and July 2014, using 100 meters long transects set perpendicular to the waterline at three zones 50 m between them. A total of 521 organisms were identified belonging to ten families and 15 species; Nephtys simoni, Notomastus sp., and Paraonis sp. represented 58.92 % of all samples. Mobile deposit-feeders polychaetes were dominant and abundant. The Quebra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annelids; Diversity; Estuaries; Soft bottoms; Variation.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000300286

Environmental filters structure plant communities in the Brazilian Chaco
Provedor de dados: 39
Autores: Assunção,Vivian Almeida; Silva,Danilo Muniz da; Dalponti,Guilherme; Sartori,Ângela Lúcia Bagnatori; Casagrande,José Carlos; Mansano,Vidal de Freitas.
ABSTRACT  We characterized taxonomic and functional differences between two vegetation physiognomies in the Brazilian Chaco, namely chaco woodland (CW) and chaco forest (CF), in order to understand which abiotic and biotic mechanisms underlie the establishment of different physiognomies. We characterized the vegetation physiognomies by comparing woody species composition, richness and diversity and functional diversity between CW and CF plots. We also measured soil variables to characterize abiotic factors related to the different physiognomies. Species richness and diversity and soil nutrient values were higher in CF. Leaf succulence and nitrogen content were higher in CW, while height, leaf area, and specific leaf area were higher in CF. The standardized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Functional traits; Seasonally dry forests; Plant community; Physiognomy; Soil fertility.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400746

The diversity and distribution of Heliconia (Heliconiaceae) in Brazil
Provedor de dados: 39
Autores: Kress,John.
A review of the phylogenetic relationships of the Zingiberales is presented and the distribution patterns and diversity of Heliconia are discussed. Sixty-five species names have been applied to the heliconias that occur in Brazil. Of these 65 names, 28 are generally recognized synonyms. Of the remaining 37 species of Brazilian Heliconia, some controversy exists over the taxonomic status of at least eight. Two primary areas of distribution of species of Heliconia exist in Brazil: the Amazon basin (21 species) and the Atlantic coastal forest (20 species).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zingiberales; Heliconia; Diversity; Distribution.
Ano: 1990
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061990000100011

Species richness of pteridophytes in a montane Atlantic rain forest plot of Southern Brazil
Provedor de dados: 39
Autores: Dittrich,Vinícius Antonio de Oliveira; Waechter,Jorge Luiz; Salino,Alexandre.
A floristic survey of pteridophytes (ferns and fern allies) was carried out in a 1ha plot in the Pico do Marumbi State Park, Morretes, State of Paraná, Southern Brazil. The study area is covered with a closed ombrophilous forest (Brazilian Atlantic Forest) and lies approximately 630 m in elevation. All species and life-forms of pteridophytes growing in the plot were registered and most of them were collected for taxonomic identification. A total of 81 species, belonging to 17 families were registered. The richest were Polypodiaceae (12 species), Hymenophyllaceae (11) and Lomariopsidaceae (11). The richest genera were Asplenium (ten species), Elaphoglossum (10) and Trichomanes (six). Life-form composition was: epiphytes (49 species), terrestrials (28),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pteridophyta; Diversity; Species count; Floristics; Southern Brazil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062005000300013

The genus Thelypteris (Thelypteridaceae, Polypodiopsida) in the state of Mato Grosso, Brazil - II - subgenera Amauropelta (Kunze) A.R. Sm., Cyclosorus (Link) C.V. Morton and Steiropteris (C. Chr.) K. Iwats
Provedor de dados: 39
Autores: Ponce,Mónica; Kieling-Rubio,Maria Angélica; Windisch,Paulo Günter.
The family Thelypteridaceae presents considerable species richness throughout the hillside forests and coastal plains of Brazil, as well as in the forests of its southern plateau. This study was based on material collected in 24 trips to various regions within the state of Mato Grosso, as well as material deposited in the principal Brazilian herbaria and in other herbaria. The genus Thelypteris, represented in this study by the subgenera Amauropelta (Kunze) A.R. Sm., Cyclosorus (Link) Morton and Steiropteris (C. Chr.) K. Iwats., comprises 11 species in Mato Grosso and surrounding regions. Keys for identification, descriptions and references to illustrations of diagnostic characters are presented.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central-west Brazil; Diversity; Ferns; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300017

Species composition and plant use in old urban homegardens in Rio Claro, Southeast of Brazil
Provedor de dados: 39
Autores: Eichemberg,Mayra Teruya; Amorozo,Maria Christina de Mello; Moura,Leila Cunha de.
This study, based on the ethnobotanical approach, looked for to characterize the ancient urban home gardens in Rio Claro, municipality located in the Southeast of Brazil, carrying out a survey of the wealth of vegetal species and their uses, in 17 households selected randomly. The data had been collected by means of semistructured and structured interviews and by the gathering of plants. It was verified a total of 410 species, distributed in 97 botanical families, evidencing a high diversity of ligneous species, such as trees and shrubs (H' = 1,66 and J = 0.86). There were surveyed 257 species for ornamental use, as well as 98 for alimentary and 93 for medicinal uses. Considering the great number of species found for the main categories of use, it can be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Home garden; Ethnobotany; Diversity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000400016

Floristic overview of the epiphytic bryophytes of terra firme forests across the Amazon basin
Provedor de dados: 39
Autores: Oliveira,Sylvia Mota de; ter Steege,Hans.
Epiphytic bryophyte communities in terra firme forests of the Amazon region were investigated for the first time through standardized sampling across the Amazon basin. The sampling was carried out at nine localities, where bryophytes were collected in five height zones, from the forest floor to the canopy of eight canopy trees per locality. The sampling generated 3104 records, identifying 222 species and 39 morphospecies, within 29 families. The most common families were Lejeuneaceae (in 55%), Calymperaceae (in 8%), Leucobryaceae (in 4%) and Sematophyllaceae (in 4%). Richness and species composition did not show any geographical gradient. The bryoflora was significantly richer in the localities of Saül, in French Guiana, and Tiputini, in Ecuador, than in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epiphyte; Diversity; Liverworts; Mosses; Rain forest; Vertical gradient.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200010

A Synopsis of Sloanea (Elaeocarpaceae) in the Neotropical extra-Amazonian Region
Provedor de dados: 39
Autores: Sampaio,Daniela; Castro Souza,Vinicius.
ABSTRACT The genus Sloanea is comprised of 150 species, of which about 50 occur in Brazil among several vegetation types but mainly the Amazon and Atlantic forests. The present work provides a synopsis of the Neotropical species of Sloanea in the extra-Amazonian region based on a recent revision of the genus. In general, morphologically Sloanea comprises large trees endowed with buttressed roots; simple leaves; flowers with sepals that may or may not cover the reproductive organs in pre-anthesis phases; stamens with the connective prolonged into an awn that is acuminate, acute or aristate and fruit covered with rigid or flexible bristles or sometimes unarmed. This synopsis describes 17 species, and provides an identification key, illustrations and comments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Brazil; Diversity; Savanna; Taxonomy.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300371

Glomus halonatum Rose &amp;amp; Trappe (Glomeromycota) in South America: comments on the morphological characteristics of the species
Provedor de dados: 39
Autores: Goto,Bruno Tomio; Costa,Cynthia Maria Carneiro; Maia,Leonor Costa.
Ornamented glomerospores of an arbuscular mycorrhizal fungus were collected from an area of Atlantic Forest in Goiana (Pernambuco, Brazil). The area had been cultivated with Coffea canephora Pierre ex. Froehner [=Coffea robusta (L.) Linden)] and Bixa orellana L., then left fallow and today is covered by herbaceous raider species. After taxonomic analysis using current descriptive and terminological criteria, the species was identified as Glomus halonatum. A description, illustrations and comments about the species are presented.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glomeraceae; Glomeromycota; Glomus; Diversity; Taxonomy.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000400026

Unraveling algae and cyanobacteria biodiversity in bromeliad phytotelmata in different vegetation formations in Bahia State, Northeastern Brazil
Provedor de dados: 39
Autores: Ramos,Geraldo José Peixoto; Santana,Lucineide Maria; Medina,Anderson Matos; Bicudo,Carlos Eduardo de Mattos; Branco,Luis Henrique Zanini; Moura,Carlos Wallace do Nascimento.
ABSTRACT Knowledge of algal and cyanobacterial diversity of phytotelmata remains poorly-known, especially for bromeliads from different vegetation formations. We investigated the microalgae communities of four species of tank bromeliads from different vegetation formations in Bahia State, Northeast Brazil, highlighting the composition, richness and diversity of taxa. Sampling of water stored in bromeliads was carried out quarterly between 2014 and 2016, and abiotic variables and morphometric attributes of bromeliads were measured. A total of 89 taxa of algae and cyanobacteria were recorded for the four bromeliad species studied. The microalgae communities of the phytotelmata varied among vegetation formations, with one tank bromeliad, Alcantarea nahoumii,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Ecology; Microalgae; Microhabitat; Phytotelm; Richness; Tank bromeliads.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000400567

Floral glands in asclepiads: structure, diversity and evolution
Provedor de dados: 39
Autores: Demarco,Diego.
ABSTRACT Species of Apocynaceae stand out among angiosperms in having very complex flowers, especially those of asclepiads, which belong to the most derived subfamily (Asclepiadoideae). These flowers are known to represent the highest degree of floral synorganization of the eudicots, and are comparable only to orchids. This morphological complexity may also be understood by observing their glands. Asclepiads have several protective and nuptial secretory structures. Their highly specific and specialized pollination systems are associated with the great diversity of glands found in their flowers. This review gathers data regarding all types of floral glands described for asclepiads and adds three new types (glandular trichome, secretory idioblast and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Apocynaceae; Asclepiadoideae; Diversity; Evolution; Flower; Secretory structures.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300477

Bryophyte communities of restingas in Northeastern Brazil and their similarity to those of other restingas in the country
Provedor de dados: 39
Autores: Silva,Mércia Patrícia Pereira; Zickel,Carmen Sílvia; Pôrto,Kátia Cavalcanti.
ABSTRACT Restingas are a coastal component of the Atlantic Forest. They experience high temperatures and possess soils with a low capacity to retain water, low nutrient content and high salt concentrations. Studies on bryophytes of restingas have been mostly conducted in Southeastern Brazil, and so we aimed to characterize the bryophyte flora of seven areas of restinga in the Northeastern Region and to establish their floristic affinities with other restingas in Brazil. Fifty-five species were found in the studied restingas, the vast majority of which are generalist species with life forms of intermediate tolerance to desiccation and of corticicolous and terrestrial habitat. The number of species per area is low compared to the species richness of other...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Distribution; Diversity; Flora; Liverworts; Mosses.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300455

Dotyophycus pacificum I. A. Abbott (Liagoraceae, Rhodophyta) a new record for the Atlantic Ocean
Provedor de dados: 39
Autores: Nunes,José Marcos de Castro; Guimarães,Silvia Maria Pita de Beauclair; Bouzon,Zenilda L.; Horta,Paulo Antunes.
Specimens of Dotyophycus pacificum I. A. Abbott were found during a survey of Rhodophyta on the coast of Bahia state. The samples were taken from 23-36 meters depth and the specimens found were studied in detail and compared to other morphologically similar species. This is the first time that the genus Dotyophycus is cited for the Atlantic Ocean.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bahia; Brazil; Diversity; Subtidal.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000100028

Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia
Provedor de dados: 39
Autores: Irume,Mariana Victória; Morais,Maria de Lourdes da Costa Soares; Zartman,Charles Eugene; Amaral,Iêda Leão do.
This survey aimed to describe the floristic composition and structure of the epiphytic community occurring in a terra firme forest in the city of Coari, Brazil, in the Amazon region. Data collection was performed with a 1.5 ha plot method, with which upland, slope and lowland habitats were sampled. All angiosperm epiphytes and their host plants (diameter at breast height &gt; 10 cm) were sampled. We recorded 3.528 individuals in 13 families, 48 genera and 164 species. Araceae was the most prevalent family with regard to the importance value and stood out in all related parameters, followed by Bromeliaceae, Cyclanthaceae and Orchidaceae. The species with the highest epiphytic importance values were Guzmania lingulata (L.) Mez. and Philodendron linnaei...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon rainforest; Epiphytic groups; Composition; Diversity; Distribution.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200012

Structure of the tree stratum of three swamp forest communities in southern Brazil under different soil conditions
Provedor de dados: 39
Autores: Mancino,Luciana Carla; Overbeck,Gerhard Ernst; Baptista,Luís Rios de Moura.
Restinga forests are commonly known to be plant communities rather poor in tree species. This study aimed to describe and explain the association between the floristic-structural similarities and the environmental conditions in three Swamp Restinga Forest communities in southern Brazil. In 13 plots of 100 m2 each, we sampled all individual trees (circumference at breast height &gt;12 cm and height ≥3 m). We collected soil samples in each plot for chemical and textural analyses. Phytosociological parameters were calculated and different structural variables were compared between areas. The density of individuals did not differ between areas; however, the maximum height and abundance of species differed between the site with Histosols and the other two sites...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic rainforest; Diversity; Floristic; Restinga; Soil.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000100030

Species diversity, community structure and ecological traits of trees in an upper montane forest, southern Brazil
Provedor de dados: 39
Autores: Sühs,Rafael Barbizan; Hoeltgebaum,Marcia Patricia; Nuernberg-Silva,Anelise; Fiaschi,Pedro; Neckel-Oliveira,Selvino; Peroni,Nivaldo.
ABSTRACT Upper montane ecosystems in Brazil are little known, and their structural and functional aspects poorly understood. Our goals were to describe tree species diversity and community structure, and to characterize tree species in relation to their ecological traits, phytogeographic history and conservation status in an upper montane araucaria forest remnant. A total of 26 species belonging to 18 families were found in a 1-hectare permanent plot. The tree community mainly comprised trees with diameters of less than 20 cm and heights of between 6.5 and 9.5 m. Drimys angustifolia and Myrceugenia regnelliana had the highest importance values. Most species were shade tolerant while most individuals were pioneers. Most species and individuals presented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araucaria forest; Conservation; Diversity; Ecological traits; Floristics; Mixed rainforest; Permanent plots; Phytogeography; PPBio; Upper montane.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100153

Environmental degradation impact on native communities of arbuscular mycorrhizal fungi in an urban fragment of semideciduous plateau forest
Provedor de dados: 39
Autores: Carrenho,Rosilaine; Gomes-da-Costa,Sandra Maria.
Three forest reserves, with highly degraded areas, are open to visitors in Maringá, Paraná, Brazil. Impact caused by tree cutting, heavy traffic and visitors on the establishment of arbuscular mycorrhizal fungi (AMF) was evaluated in two areas with different degradation stages of the Dr. Luis Teixeira Mendes Forest Garden, a remnant of semideciduous forest. Soil samples were removed from three locations within each area; spores were isolated from the soil by wet sieving and sucrose centrifugation and mounted on permanent slides. Spores were counted and identified taxonomically under a microscope. Diversity, dominance, equitability and similarity indexes were calculated from abundance data. The degraded area had the highest number of spores and featured...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Glomeromycetes; Forest fragmentation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200013

Sporocarpic species of arbuscular mycorrhizal fungi (Glomeromycota), with a new report from Brazil
Provedor de dados: 39
Autores: Goto,Bruno Tomio; Maia,Leonor Costa.
The arbuscular mycorrhizal fungi (AMF) are widely distributed in terrestrial ecossystems; however the sporocarpic species are less documented on AMF surveys. Five of these species were found in natural areas of Atlantic Forest and in agricultural ecosystems of Northeast Brazil: Glomus glomerulatum, G. sinuosum, G. coremioides, G. fuegianum and G. taiwanensis, with the last one being registered for the first time in Brazilian soils.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glomerales; Glomeraceae; Glomus; Arbuscular mycorrhiza; Diversity.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062005000300025

Floristic and vegetation structure of a grassland plant community on shallow basalt in southern Brazil
Provedor de dados: 39
Autores: Pinto,Marcelo Fett; Nabinger,Carlos; Boldrini,Ilsi Iob; Ferreira,Pedro Maria de Abreu; Setubal,Robberson Bernal; Trevisan,Rafael; Fedrigo,Jean Kássio; Carassai,Igor Justin.
Few studies have adequately described the floristic and structural features of natural grasslands associated with shallow basalt soils in southern Brazil. This study was carried out on natural grazing land used for livestock production in the municipality of Santana do Livramento, in the Campanha region of the state of Rio Grande do Sul, Brazil. The aim of the study was to describe the floristic and structural diversity of the area. The floristic list obtained comprises 229 plant taxa from 40 botanical families, with a predominance of the families Poaceae (62), Asteraceae (28), Fabaceae (16) and Cyperaceae (12). The estimated diversity and evenness in the community were 3.00 and 0.874, respectively. Bare soil and rock outcrops accounted for 19.3% of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Richness; Pampa biome; Forage species; Environmental gradient.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100017

The role of temporal scale in linear edge effects on a submontane Atlantic forest arboreal community
Provedor de dados: 39
Autores: Couto-Santos,Ana Paula Lima do; Conceição,Abel Augusto; Funch,Ligia Silveira.
This study aims to detect the composition, abundance patterns, and successional stage distributions exhibited by arboreal species inside and at the linear edge of a submontane seasonal forest in the Chapada Diamantina (12°28'31'S, 41°23'14'W), Bahia, Brazil. The individual plants with breast height diameters ≥5 cm were sampled in 30 quadrats (10 m × 10 m), 15 in the forest edge and 15 inside the forest. Species were classified according to successional category. Phytosociological and diversity indices were calculated. Shannon indices were compared using Hutcheson's t-test, and the remaining parameters were analyzed by ANOVA. Linear edges exerted a high impact on the floristic composition, diversity, and abundance of species, though little interference was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chapada Diamantina; Diversity; Forest fragmentation; Successional categories; Vegetation structure.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200190

Communities of Mucorales (phylum Mucoromycota) in different ecosystems of the Atlantic Forest
Provedor de dados: 39
Autores: Lima,Diogo Xavier; Souza-Motta,Cristina Maria; Lima,Catarina Letícia Ferreira de; Souza,Carlos Alberto Fragoso de; Ribeiro,Jonathan Ramos; Santiago,André Luiz Cabral Monteiro de Azevedo.
ABSTRACT As primary decomposers of organic matter, mucoralean fungi have an important ecological role in edaphic systems in the Atlantic Forest. However, there is a knowledge gap regarding how communities of Mucorales are structured in soils of Atlantic Forest areas, and whether these communities are influenced by edaphic attributes in this domain. Thus, the current study aimed to understand the influence of edaphic attributes linked to species richness, abundance and composition of Mucorales in dense ombrophilous forest, ‘tabuleiro’ forest, sandbank and mangrove ecosystems located in Pernambuco, Brazil. Altogether, twenty-three taxa, including seven new records, were reported from soil samples from the ecosystems. Species composition was similar among the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Basal fungal order; Diversity; Ecology; Mucorales; Mucoromycota; Mucoromycotina; Soil; Taxonomy.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400796

Ethnobotany of rural people from the boundaries of Carlos Botelho State Park, São Paulo State, Brazil
Provedor de dados: 39
Autores: Hanazaki,Natalia; Souza,Vinícius Castro; Rodrigues,Ricardo Ribeiro.
In this article we describe and analyze the use of plant resources in a region nearby a conservation area. Data were collected through semi-structured interviews, in which we asked the interviewees to free list the plants known. Species cited were identified through collection of botanical samples, and field observations. Fifty-eight inhabitants were interviewed; banana farming, cattle ranching, and extracting palm hearts are their main economic activities. A total of 248 ethnospecies were mentioned, including over 200 botanical species. Plants were grouped into four habitats (A = well-preserved forest; B = disturbed forest in old successional stages; C = recently disturbed environments; D = cultivated areas and home gardens). Highest diversity is known...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Diversity; Ethnobotany; Traditional ecological knowledge; Disturbed areas.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000400014

Does fire determine distinct floristic composition of two Cerrado savanna communities on different substrates?
Provedor de dados: 39
Autores: Lenza,Eddie; Abadia,Ana Clara; Menegat,Hélio; Lúcio,Nadjarriny W.; Maracahipes-Santos,Leonardo; Mews,Henrique A.; Santos,Josias O. dos; Martins,Jhany.
ABSTRACT We surveyed two savanna sites, one on flat terrain with deep soil (DS), and the other on hilly terrain with rocky outcrops and shallow soil (RS), before and after an accidental fire. We found that the fire did not cause any significant changes in the species composition or diversity of either community, and did not result in floristic homogenization. However, we did record a reduction in the density of plants and in basal area in the DS savanna in comparison with the RS savanna, as well as a higher rate of basal sprouting, which indicates a trade-off between mortality and sprouting. We conclude that, whereas post-fire changes in vegetation structure were more pronounced in the DS savanna than in the RS, the difference in the underlying substrate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Fire; Fuel; Savanna; Species composition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200250

Corona development and floral nectaries of Asclepiadeae (Asclepiadoideae, Apocynaceae)
Provedor de dados: 39
Autores: Monteiro,Mariana Maciel; Demarco,Diego.
ABSTRACT Flowers of Asclepiadoideae are notable for possessing numerous nectaries and elaborate coronas, where nectar can accumulate but is not necessarily produced. Given the complexity and importance of these structures for reproduction, this study aimed to analyze the ontogeny of the corona, the structure and position of nectaries and the histochemistry of the nectar of species of Asclepiadeae. Two types of coronas were observed: androecial [C(is)] and corolline (Ca). The development of the C(is)-type of corona initiates opposite the stamens in all species examined with the exception of Matelea in which it begins to develop as a ring around the filament tube. Despite their morphological variation, coronas typically originate from the androecium. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asclepiads; Histochemistry; Ontogeny; Nectar; Structural; Diversity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300420

Estrutura da população de nematoides do solo em uma unidade de produção agroecológica no Estado do Rio de Janeiro, Brasil - doi: 10.4025/actasciagron.v33i2.4716
Provedor de dados: 1
Autores: Figueira, Adriana França; Universidade Federal Rural do Rio de Janeiro; Berbara, Ricardo Luis Louro; Universidade Federal Rural do Rio de Janeiro; Pimentel, João Pedro; Universidade Federal Rural do Rio de Janeiro.
Estudou-se a comunidade de nematoides do solo em quatro sistemas de manejo no Sistema Integrado de Produção Agroecológica (SIPA): pasto, capoeira, figo com Paspalum notatum e horta. As amostras de solo foram coletadas a cada quatro meses durante um ano. A comunidade de nematoides foi identificada e descrita com os parâmetros: riqueza de famílias, diversidade de Shannon-Weaner, de dominância de Simpson, além da diversidade trófica e dominância trófica. Os fitoparasitas e bacteriófagos dominaram as comunidades de nematoides nas áreas. Os onívoros foram menos abundantes em todos os sistemas estudados. O sistema pasto apresentou maior diversidade de famílias de nematoides enquanto que, no sistema capoeira se encontraram valores de diversidade baixos, porém...
Palavras-chave: Termo1 Solos; Termo2 agronomia Microfauna; Sistemas de cultivo; Diversidade Microfauna; Crop system; Diversity.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4716

Macrofauna invertebrada do solo em sistema integrado de produção agropecuária no Cerrado - DOI: 10.4025/actasciagron.v30i5.5974
Provedor de dados: 1
Autores: Silva, Rogério Ferreira da; UEMS; Aquino, Adriana Maria de; EMBRAPA; Mercante, Fábio Martins; EMBRAPA; Guimarães, Maria de Fátima; UEL.
O trabalho teve como objetivo avaliar a densidade e diversidade da macrofauna invertebrada do solo de um sistema de produção envolvendo a rotação lavoura e pecuária, sob plantio direto. O trabalho foi conduzido no Município de Dourados, Estado do Mato Grosso do Sul, num LATOSSOLO VERMELHO Distroférrico típico, em parcelas com monocultivo e preparo convencional do solo, sistema integrado lavoura/pecuária em plantio direto e pastagem contínua, e um fragmento de vegetação nativa. As avaliações foram realizadas em quatro épocas distintas: janeiro/2002, junho/2002, janeiro/2003 e julho/2003, conforme o método recomendado pelo programa “Tropical Soil Biology and Fertility” (TSBF). Os sistemas com menor interferência antrópica apresentaram maior abundância e...
Palavras-chave: 5.02.01.07-7 Solos Florestais rotação lavoura/pecuária; Plantio direto; Fauna do solo; Diversidade crop-livestock rotation; No-tillage; Soil fauna; Diversity.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5974

Poblaciones microbianas ruminales en novillas alimentadas con Leucaena leucocephala en el Bosque Seco Tropical colombiano.
Provedor de dados: 2
Autores: Angarita, Erika; Molina, Isabel; Villegas, Gonzalo; Mayorga, Olga; Chará, Julián; Barahona Rosales, Rolando.
La fermentación y metanogénesis ruminal son procesos metabolicos vitales para los bovinos y son llevados a cabo por poblaciones microbianas, las cuales se afectan por factores como la presencia de metabolitos secundarios, la composición nutricional y la degradabilidad de la dieta. El objetivo de este trabajo fue monitorear las poblaciones de bacterias totales, metanógenos totales y Butirivibrio fibrisolvens en el rumen de novillas raza Lucerna, alimentadas con dietas típicas de un sistema silvopastoril intensivo y un sistema tradicional. Para ello, se colectó contenido ruminal (CR) por vía oral a ocho novillas que consumían 100% Cynodon plectostachyus (control) y 76% C. plectostachyus + 24% Leucaena leucocephala siguiendo un diseño de sobre-cambio. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biológicas; Salud; Agrarias bacteria; Diversity; Legume; Methanogens; Real Time Polymerase Chain Reaction (RT-PCR). Bacteria; Diversidad; Leguminosa; Metanógenos; Reacción en Cadena de la Polimerasa en Tiempo Real (PCR-TR).
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24836

Emergence of Chironomidae (Insecta: Diptera) in a floodplain lake of the upper Paraná river, Mato Grosso do Sul State, Brazil   - doi: 10.4025/actascibiolsci.v36i1.19323
Provedor de dados: 3
Autores: Butakka, Cristina Márcia de Menezes; Universidade do Mato Grosso; Trivinho-Strixino, Susana; Universidade Federal de São Carlos; Pinha, Gisele Daiane; Universidade Estadual de Maringá; Takeda, Alice Michiyo; Universidade Estadual de Maringá.
To investigate the emergence of Chironomidae in different habitats of a floodplain lake of the upper Paraná river floodplain, four collection points were established: marginal regions (one with numerous macrophytes species, other dominated by only Polygonum sp.), central region and linking channel. Adults were captured by surface emergence traps assembled every three months, from May 2001 to March 2002. The traps remained for a period of about 48 hours, obtaining quantitative data for richness and abundance. 944 adults distributed into three subfamilies and 40 taxa were captured. The taxa identified at the species level were: Goeldichironomus neopictus, G. petiolicola, G. maculatus, Tanytarsus ligulatus, Parachironomus atroari, P. guarani and P. cayapo....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic insects; Habitats; Neotropical floodplain; Diversity; Emergence traps Ecologia e Biodiversidade.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19323

Floristic composition of the Seasonal Semideciduous Forest in Southern Brazil: Reserva Biológica das Perobas, State of Paraná
Provedor de dados: 3
Autores: Dettke, Greta Aline; Crespão, Laianne Mayara Pezenti; Siquerolo, Luciana Veríssimo; Siqueira, Edemilson Luiz; Caxambú, Marcelo Galeazzi.
 This study catalogued the vascular species found in the second largest continuous remnant of Seasonal Semideciduous Forest in the State of Paraná. A total of 425 species distributed among 295 genera and 101 families were identified. The most representative families are Fabaceae (27 species), Asteraceae (21), Bignoniaceae (19), Poaceae (19) and Orchidaceae (15). Two species are unique records in the State of Paraná, in the study area: Bulbophyllum rupicolum Barb.Rodr. (Orchidaceae) and Heladena multiflora (Hook. &amp; Arn.) Nied. (Malpighiaceae). The predominant life forms are herbs and trees, and terrestrial plants represented the majority of species. We recorded 11 exotic species. It is a large remnant and contains high specific diversity for the region,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.04.02-1 Atlantic Forest; Inventory floristic; Conservation; Diversity; Herbarium. Botânica.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35753

Community of protozoans and metazoans parasitizing Auchenipterus nuchalis (Auchenipteridae), a catfish from the Brazilian Amazon
Provedor de dados: 3
Autores: Dias, Marcos Tavares.
 This paper describes the first study on parasite diversity in Auchenipterus nuchalis Spix &amp; Agassiz, 1829 (Auchenipteridae). In 31 fish caught in a tributary of the Amazon River, 10,708 parasites were collected, such as Ichthyophthirius multifiliis, Piscinoodinium pilullare, Cosmetocleithrum striatuli, metacercariae of Posthodiplostomum sp, and larvae and adults of Procamallanus (Spirocamallanus) inopinatus. These parasite species showed aggregated dispersion, except for C. striatuli, which had a uniform dispersion. The component community of parasites showed a low Brillouin diversity (0.67 ± 0.27), low species richness (3.5 ± 0.8) and low evenness (0.43 ± 0.17), and it was characterized by the presence of species with high prevalence and abundance....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parasitologia Brazil; Diversity; Freshwater fish; Parasites. Zoologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32836

Structural and compositional shifts in Cerrado fragments in up to 11 years monitoring
Provedor de dados: 3
Autores: Cordeiro, Natielle Gomes; Pereira, Kelly Marianne Guimarães; Terra, Marcela de Castro Nunes Santos; Mello, José Márcio de.
The Cerrado has a wide diversity of fauna and flora, and the knowledge of its horizontal structure, in different time intervals allows the prediction of its structural and floristic characteristics. The aim of this study was to evaluate the changes in structure and composition of tree community in three fragments of Cerrado with low anthropization, in an interval of 11 years at Minas Gerais state. Rectangular plots of fixed size were sampled, measuring stem diameter and height of all living arboreal individuals with diameter at 1.30 meters above ground (DBH) ≥ 5 cm. The tree vegetation dynamics study of the areas was performed, as well as the floristic analysis and the diametric structure. Considering all fragments and years of measurement, the recruitment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tree community dynamics; Diversity; Ingrowth; Recruitment; Similarity; Vegetation. tree community dynamics; Diversity; Ingrowth; Recruitment; Similarity; Vegetation.
Ano: 2020
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/48357

Species composition and frequency of habitat use by medium and large-sized mammals in the Brazilian Cerrado Biome, State of Tocantins
Provedor de dados: 3
Autores: Santiago, Wagner Tadeu Vieira; Fonseca, Carlos; Zanzini, Antonio Carlos da Silva; Machado, Felipe Santana; Moura, Aloysio Souza de; Fontes, Marco Aurélio Leite.
The Cerrado biome is the second largest natural vegetation type existing in Brazil after the Amazon, covering 91% of the State of Tocantins, with 30% of the territory changed as a result of the expansion of economic development areas. The substitution of natural vegetation means habitat loss on species, and may put the survival of medium and large-sized mammal species under extinction risk. These species represent significant energy demands and high requirements of area within the habitat. This study aims to assess the species composition and the frequency of use of physiognomic types of vegetation by medium and large-sized mammals. The study was conducted from 2001 to 2011 using a set of complementary and alternative techniques in fragments of seven...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Utilization of habitat; Phytophysiognomies; Diversity.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/45684

Bats (Chiroptera, Phyllostomidae) in the urbanized area in South of Brazil - doi: 10.4025/actascibiolsci.v34i2.8783
Provedor de dados: 3
Autores: Prone, Bruno; Universidade Estadual de Maringá; Zanon, Cibele Maria Vianna; Universidade Estadual de Maringá; Benedito, Evanilde; Universidade Estadual de Maringá.
The present study aimed to inventory of bats species present in an urban area, located within the main campus of the State University of Maringá, northwestern Paraná State, and to present data on the diet, reproduction, and activity times of the captured species. Collections were performed monthly, between September 2007 and August 2008, and 377 individuals were captured, belonging to four species from the Phyllostomidae family: Artibeus lituratus (90%), Platyrrhinus lineatus (6.4%), Sturnira lilium (2.4%), and Carollia perspicillata (1.3%). The types of fruit ingested consisted especially of Cecropiaceae, Moraceae, Myrtaceae, Piperaceae and Solanaceae. Among the captured exemplars, 51% were female and 49% male. No pregnant females of A. lituratus or males...
Palavras-chave: Diversity; Capture time; Diet; Reproduction 2.05.00.00-9    Ecologia.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/8783

Estrutura fitossociológica de uma área de cerradão em Canarana, Estado do Mato Grosso, Brasil - DOI: 10.4025/actascibiolsci.v31i3.1625
Provedor de dados: 3
Autores: Kunz, Sustanis Horn; UFV; Ivanauskas, Natália Macedo; UFV; Martins, Sebastião Venâncio; UFV.
Diante da intensa fragmentação e da escassez de estudos realizados em cerradão, este trabalho apresenta a estrutura da comunidade arbórea de um trecho desta fitofisionomia no Planalto Central. Foram demarcados todos os indivíduos lenhosos que apresentaram diâmetro em nível do solo ≥ 5 cm, em dez parcelas de 20 x 50 m, perfazendo área amostral de 1 ha. Foram registrados 2.496 indivíduos, distribuídos em 95 espécies, e Protium heptaphyllum (Aubl.) Marchand apresentou maior valor de importância na comunidade, principalmente pela alta densidade. O índice de Shannon (3,85) e o índice de equabilidade de Pielou (0,84) foram considerados altos e semelhantes a outros encontrados em áreas próximas à deste estudo.
Palavras-chave: 2.00.00.00-6    Ciências Biológicas cerrado; Estrutura da comunidade vegetal; Diversidade Botânica cerrado; Plant community structure; Diversity.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1625

Bioassessment using benthic macroinvertebrates of the water quality in the Tigreiro river, Jacuí Basin - doi: 10.4025/actascibiolsci.v35i4.18934
Provedor de dados: 3
Autores: Copatti, Carlos Eduardo; Universidade Federal da Bahia; Ross, Marcelo; Universidade de Cruz Alta; Copatti, Bethânia Ross; Universidade Federal da Bahia; Seibel, Laidines Fagundes; Universidade de Cruz Alta.
This study aimed to evaluate the water quality in the Tigreiro river, Jacuí river Basin, using different approaches. Benthic macroinvertebrates were sampled in July 2010 (winter) and February 2011 (summer) at five sites. In this study were analyzed: microbiological, physical and chemical variables, benthic macroinvertebrates richness and diversity, rapid ecological assessment protocol and benthic biotic indices (% EPT, BMWP’-IAP, ASPT, SOMI). A total of 5,852 individuals were collected belonging to 31 taxa of three Phyla: Annelida, Mollusca and Arthropoda. Chironomidae was the most abundant taxon (63.70%). A reduction in richness, diversity H’ and evenness J’ was observed from the initial stretches to the end stretches of Tigreiro river. The use of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Limnologia Chironomidae; Diversity; Benthic biotic indices; Domestic effluents; % EPT Biodiversidade.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18934

Species richness of testate amoebae in different environments from the upper Paraná river floodplain (PR/MS) - doi: 10.4025/actascibiolsci.v33i3.7261
Provedor de dados: 3
Autores: Costa, Deise de Morais; Universidade Estadual de Maringá; Alves, Geziele Mucio; UEM; Velho, Luiz Felipe Machado; UEM; Lansac-Tôha, Fábio Amodêo; UEM.
This study evaluated the species richness of testate amoebae in the plankton from different environments of the upper Paraná river floodplain. Samplings were performed at subsurface of pelagic region from twelve environments using motorized pump and plankton net (68 &amp;micro;m), during four hydrological periods. We identified 67 taxa, distributed in seven families and Arcellidae, Difflugiidae and Centropyxidae were the most representative families. Higher values of species richness were observed in the lakes (connected and isolated) during the flood pulses. Centropyxis aculeata, Difflugia gramem and D. pseudogramem were frequent throughout the study period. Seasonal variability of species in the channels and isolated lakes was evidenced by beta...
Palavras-chave: Protozoa; Plankton; Diversity; Species composition Protozoa; Plankton; Diversity; Species composition.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7261

Variação temporal da comunidade fitoplanctônica em lagos urbanos eutróficos - doi: 10.4025/actascibiolsci.v33i4.5955
Provedor de dados: 3
Autores: Nabout, João Carlos; UFG; Nogueira, Ina Souza; UFG.
O objetivo desse trabalho foi averiguar a mudança sazonal e o sincronismo temporal de atributos da comunidade fitoplanctônica (diversidade e a densidade) de quatro reservatórios urbanos eutróficos (lago do Jardim Botânico, lago do parque Vaca Brava, lago das Rosas e lago do bosque dos Buritis) do município de Goiânia, Estado de Goiás. A diversidade foi estimada pelo índice de Shannon-Winner (H’) e a densidade foi pelo método de Utermöhl. Todos os quatro lagos apresentaram elevada diversidade fitoplanctônica, variando de H’ = 0,97 (bosque dos Buritis) a H’ = 4,29 (lago do Jardim Botânico), além disso, a diversidade foi significativamente distinta entre os quatro lagos estudados (F = 4,74; p &lt; 0,001, n = 4). A densidade fitoplanctônica foi elevada, sendo...
Palavras-chave: Ecologia; Botanica; Taxonomia de criptógamos Densidade; Diversidade; Sincronismo; Lagos artificiais; Fatores locais; Sazonalidade Density; Diversity; Synchronism; Artificial lakes; Local factors; Seasonality.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5955

Colonization of benthic invertebrates on artificial and natural substrate in a Neotropical lotic environment in Southern Brazil
Provedor de dados: 3
Autores: Camargo, Nilce Svarcz Jungles de; Lehun, Atsler Luana; Rosa, Jonathan; Bueno-Krawczyk, Ana Carolina de Deus.
The objective of this research was to validate the colonization process on natural and artificial substrates by benthic invertebrates in a tropical stream in South Brazil. The samples were performed in July and August-2012, and 32 samplers were used, being 16 natural and 16 artificial substrates. In each sample, two replicas were taken for each substrate at the 2th, 4th, 7th, 14th, 21th 28th, 35th and 42th days of colonization. The organisms were identified to the lowest possible taxonomic level. In both substrates 3,070 benthic invertebrates were detected, of which 1,753 individuals were collected on the natural substrate, and 1,317 on the artificial substrate. From the identified taxa 8.5% were not dominant (Anacroneuria, Orthocladiinae, Tupiara,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community structure; Diversity; Tropical stream; Limnology; Simulium. Community structure; Diversity; Tropical stream; Limnology; Simulium.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/45872

First record of Fanniidae (Diptera) from New Caledonia
Provedor de dados: 42
Autores: COURI,MÁRCIA S.; SOUSA,VIVIANE R.
Abstract: The family Fanniidae is newly recorded to New Caledonia. Adult male and female of Fannia capitalis Pont are illustrated as well as the peculiar male terminalia, the female ovipositor, and the egg. Male phallic process and egg are described for the first time.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Fannia morphology; New record; Terminalia.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500613

A review of the Quaternary Scelidotheriinae (Mammalia, Xenarthra, Tardigrada) from the Tarija-Padcaya basin, Bolivia
Provedor de dados: 42
Autores: MIÑO-BOILINI,ÁNGEL R.; CARLINI,ALFREDO A.; ZURITA,ALFREDO E.; SOIBELZON,ESTEBAN; RODRÍGUEZ-BUALÓ,SANTIAGO M.
ABSTRACT The Mylodontidae Scelidotheriinae (Mammalia, Xenarthra, Tardigrada) are a diversified clade of South American fossil ground sloths, with a wide geographic distribution, especially in high and middle latitudes. According to the last revision, the Quaternary diversity includes the genera Scelidotherium, Catonyx, and Valgipes. The clade Scelidotheriinae is well represented in the Pleistocene of the Tarija-Padcaya basin, and the first mention of these ground sloths correspond to the middle of the XIX Century. Since then, several species (i.e., Scelidotherium tarijensis, Scelidodon tarijensis, Scelidotherium capellini) have been reported as inhabiting the Tarija-Padcaya basin during the Pleistocene. Despite the abundance of fossil records of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catonyx; Diversity; Pilosa; Pleistocene; South America.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400505

Effective microorganisms inoculant: Diversity and effect on the germination of palisade grass seeds
Provedor de dados: 42
Autores: SANTOS,LIDIANE F. DOS; LANA,ROGÉRIO P.; SILVA,MARLIANE C.S. DA; VELOSO,TOMÁS G.R.; KASUYA,MARIA CATARINA M.; RIBEIRO,KARINA G.
Abstract  Effective microorganisms (EM) are inoculants formed by fungi and bacteria isolated from soil. EM are commonly used by farmers on agronomic crops to stimulate plant growth, but their composition and their benefits has been controverted. This study aimed to analyze the diversity of microorganisms growing in three EM inoculants, as well as to evaluate their efficiency in the germination of palisade grass seeds. The total DNA of the three EM inoculants was extracted, the 16S rRNA and ITS genes were amplified by PCR and sequenced on the Illumina MiSeq platform. Germination tests were conducted with three type of the EM, in three concentration and two times of the immersion. The bacterial group was the most abundant in EM, followed by fungi. Bacterial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Dormancy; Sequencing; Sulfuric acid.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000201002

Are we close to knowing the plant diversity of the Amazon?
Provedor de dados: 42
Autores: HOPKINS,MICHAEL J.G.
Abstract: Amazonia is often cited as having the most diverse flora on the planet. However, the total number of species of higher plants in the region has been largely a matter of guesswork. Some recent publications have estimated the total number of species present, which indicate a lower overall diversity than was estimated in the past. However, analysis of the sampling density across the region, and data from various sources suggest that there may be reason why the recent figures may be considerable underestimates. I believe that much more investment in extensive collecting of quality plant specimens is needed to encounter the very large number of rare and local species that might never have been collected. Unfortunately the tendencies of investment in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Amazonia; Species discovery; Plants.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000600616

Temporal variation of bacterial population and response to physical and chemical parameters along a petrochemical industry wastewater treatment plant
Provedor de dados: 42
Autores: ANTUNES,THEMIS C.; BALLARINI,ANA E.; SAND,SUELI VAN DER.
Abstract: The petrochemical industry has played a considerable role in generation and release of waste in the environment. Activated sludge and facultative lagoons are commonly used for domestic and industrial wastewater treatment due to their low-cost and minimal need for operational requirements. Microorganisms present in wastewater treatment plant (WWTP) are responsible for most nutrient removal. In this study, microbiological and physicochemical parameters were used to estimate changes in bacterial community in a petrochemical industrial WWTP. The activated sludge was the place with higher heterotrophic bacterial quantification. Denitrifying bacteria was reduced at least 5.3 times throughout all collections samples. We observe a decrease in the total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria; Diversity; Wastewater treatment; Facultative lagoon; Activated sludge.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300616

Community structure of the ichthyofauna associated with seagrass beds ( Halodule wrightii) in Formoso River estuary - Pernambuco, Brazil
Provedor de dados: 42
Autores: Pereira,Pedro H.C.; Ferreira,Beatrice P.; Rezende,Sérgio M.
Seagrass beds are used by juvenile fishes in different ways, generally as nursery sites, shelter from predators, reducing competition and increasing availability of food resources, thus establishing a relationship of connectivity with other ecosystems. In the present study, the community structure of the ichthyofauna associated with seagrass beds on the Formoso River (Pernambuco - Brazil) was evaluated during the winter of 2008. Twenty-seven manual trawls (15 daytime and 12 nighttime) were performed, and a total of 358 fishes belonging to 18 families, 21 genus and 25 species were collected. The Catch Per Unit Effort (CPUE) by trawling average was 13.5 and 4.95 individuals per species per trawl. The most abundant families were Scaridae (n = 111),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Connectivity; Seagrass beds; Reef fishes; Diversity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000300009

Community structure of metazoan parasites in Hemibrycon surinamensis (Characidae) from the Matapi River in the State of Amapá, Brazil
Provedor de dados: 42
Autores: SOUSA,BRIANI O.; OLIVEIRA,MARCOS S.B.; MARCOS,TAVARES-DIAS.
Abstract Abstract: The aim of this study was to investigate the community of metazoan parasites in Hemibrycon surinamensis from the Matapi River, State of Amapá, Brazil. Among the 31 examined fish, 77.4 % were parasitized by Jainus hexops, Tereancistrum ornatus (Monogenea), Contracaecum sp. (Nematoda), Clinostomus marginatum and Posthodiplostomum sp. (Digenea). However, the dominance was of monogeneans J. hexops and T. ornatus, and among the endoparasites, the predominance was of species at the larval stage. The parasites showed random dispersion. Brillouin diversity index varied from 0 to 0.9, evenness from 0 to 0.7 and species richness from 0 to 3 parasites per host. Low levels of parasitic infection were observed and discussed. The results indicate that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ectoparasites; Freshwater fish; Diversity; Monogeneans.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300614

Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism
Provedor de dados: 42
Autores: RODRIGUES,BRUNO V.B.; AGUIAR-NETO,MANOEL B.; OLIVEIRA,UBIRAJARA DE; SANTOS,ADALBERTO J.; BRESCOVIT,ANTONIO D.; MARTÍNS,MARLÚCIA B.; BONALDO,ALEXANDRE B.
ABSTRACT A list of spider species is presented for the Belém Area of Endemism, the most threatened region in the Amazon Basin, comprising portions of eastern State of Pará and western State of Maranhão, Brazil. The data are based both on records from the taxonomic and biodiversity survey literature and on scientific collection databases. A total of 319 identified species were recorded, with 318 occurring in Pará and only 22 in Maranhão. About 80% of species are recorded at the vicinities of the city of Belém, indicating that sampling effort have been strongly biased. To identify potentially high-diversity areas, discounting the effect of variations in sampling effort, the residues of a linear regression between the number of records and number of species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Araneae; Diversity; Fragmentation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401543

A new species and new records of Leptogium (Ach.) Gray (Collemataceae, Peltigerales) from Rio Grande do Sul State with an identification key for the genus
Provedor de dados: 42
Autores: KITAURA,MARCOS J.; KOCH,NATÁLIA M.; LUCHETA,FABIANE; KÄFFER,MÁRCIA I.; SCHMITT,JAIRO L.; PEDROSO,JULIANA; MARTINS,SUZANA A.; RODRIGUES,ANDRESSA S.; CANÊZ,LUCIANA S.
Abstract Abstract: Specimens of Leptogium collected in ten localities from the State of Rio Grande do Sul were studied. Sixteen species were found of 28 records mentioned to the state, which represents around 57% of the Leptogium diversity known for Rio Grande do Sul. Leptogium exaratum is proposed as a new species. Leptogium atlanticum, L. milligranum and L. vesiculosum are reported for the first time to the state. The lectotype of L. javanicum is reported here and detailed descriptions are provided to the examined specimens. An identification key is showed with all the 28 mentioned species of Leptogium. It is the first published taxonomic key for Leptogium from Rio Grande do Sul, the State with the highest diversity of this genus in Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Checklist; Diversity; HAS herbarium; HURG herbarium; Inflated apothecia.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100607

Community ecology of parasites in four species of Corydoras (Callichthyidae), ornamental fish endemic to the eastern Amazon (Brazil)
Provedor de dados: 42
Autores: FERREIRA,MAKSON M.; PASSADOR,RAFAEL J.; TAVARES-DIAS,MARCOS.
Abstract Abstract: This study compared the parasites community in Corydoras ephippifer, Corydoras melanistius, Corydoras amapaensis and Corydoras spilurus from tributaries from the Amapari River in State of Amapá (Brazil). A total of 151 fish of these four ornamental species were examined, of which 66.2% were parasitized by one or more species, and a total of 732 parasites were collected. Corydoras ephippifer (91.2%) and C. spilurus (98.8%) were the most parasitized hosts, while C. amapaensis (9.6%) was the least parasitized. A high similarity (≅ 75%) of parasite communities was found in the host species. Hosts were parasitized by Procamallanus (Spirocamallanus) inopinatus, Camallanus sp. and metacercariae of digeneans. The parasites had an aggregated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Diversity; Helminths; Parasites; Freshwater fish.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100608

Temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical river
Provedor de dados: 42
Autores: FARIA,DENISE M. DE; COSTIN,JÚLIO C.; TREMARIN,PRISCILA I.; LUDWIG,THELMA A.V.
Abstract: Diatom growth strategies, which are used as a proxy to analyze disturbances and environmental impacts, can also provide reliable information about environmental gradients. In this study, we used diatom communities and biological traits to assess the structure of epilithic diatoms after an oil spill in a large tributary of the Iguaçu River (Paraná, Brazil). Epilithon and water samples were taken on July 12th, 2004, and after an unexpected oil spill, on the following days: 09/19, 10/03, and 10/13/2004. We observed that the spill caused a distinct shift in both diatom composition and guild group. Diversity decreased and pollution-tolerant diatoms of the motile group became dominant in response to the elevated nutrient levels and reduced light....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diatom guilds; Disturbance; Diversity; Epilithon; Growth forms.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300609

Geographic and Gender Diversity in the Brazilian Academy of Sciences
Provedor de dados: 42
Autores: FERRARI,NATHÁLIA C.; MARTELL,RAQUEL; OKIDO,DANIELA H.; ROMANZINI,GRASIELE; MAGNAN,VIVIANE; BARBOSA,MARCIA C.; BRITO,CAROLINA.
ABSTRACT Recent studies have shown that diversity in race and gender is important to improve competitiveness, creativity and innovation. However, many studies have shown that the universe of science is not diverse in none of these criteria. In this work, we quantify the gender and geographic diversity in the Brazilian science. We study in detail the profile of the titular members of the most prestigious academic institution of Brazil, the Brazilian Academy of Sciences (ABC). Our analysis shows that the members of the ABC concentrates 80% in the Southeast region and that the overwhelming majority is composed by men. We show that female and male researchers have roughly the same amount of publication per year but women produce more human resources. Using the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Gender balance; Women in science; Excellence in science.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502543

The influence of fire on the assemblage structure of foraging birds in grasslands of the Serra da Canastra National Park, Brazil
Provedor de dados: 42
Autores: Reis,Matheus G.; Fieker,Carolline Z.; Dias,Manoel M.
Grasslands are the most threatened physiognomies of the Cerrado biome (Brazilian savanna), a biodiversity hotspot with conservation as a priority. The Serra da Canastra National Park protects the most important remnants of the Cerrado's southern grasslands, which are under strong anthropogenic pressure. The present study describes the structure of bird assemblages that directly use food resources in burned areas, comparing areas affected by natural fire to the areas where controlled fires were set (a management strategy to combat arson). The tested null hypothesis was that different bird assemblages are structured in a similar manner, regardless of the post-fire period or assessed area. Between December/2012 and January/2015, 92 species were recorded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado biome; Diversity; Environmental management; Prescribed burning; Wildfire.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300891

Regarding the real diversity of Glyptodontidae (Mammalia, Xenarthra) in the late Pliocene (Chapadmalalan Age/Stage) of Argentina
Provedor de dados: 42
Autores: ZURITA,ALFREDO E.; TAGLIORETTI,MATÍAS; DE LOS REYES,MARTÍN; CUADRELLI,FRANCISCO; POIRE,DANIEL.
ABSTRACT A large diversity of Glyptodontidae has been proposed as characterizing the Chapadmalalan Age (Pliocene). Most of these taxa were recognized on the basis of partial dorsal carapaces and/or caudal tubes, whereas the main diagnostic characteristic is a particular morphology of the exposed surface of the osteoderms. From a biostratigraphic point of view some species are biostratigraphically important. The Upper Chapadmalalan is based on the Paraglyptodon chapadmalensis biozone. Both the re-evaluation of the type and referred materials and new significant findings from the Chapadmalal and El Polvorín Formations indicate that the diversity of Pliocene Glyptodontidae is more limited than previously supposed. The particular morphology of the exposed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Glyptodonts; Osteoderms; Pliocene; Southern South America.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300809

Biodiversity of Coreoidea and Pentatomidae (Heteroptera) from Atlantic forest protected areas. Insights into their conservation.
Provedor de dados: 42
Autores: DELLAPÉ,GIMENA; COLPO,KARINE D.; MELO,MARÍA C.; MONTEMAYOR,SARA I.; DELLAPÉ,PABLO M.
ABSTRACT Although the majority of threatened species are likely to be tropical insects, knowledge of the diversity, ecological role and impact of insect biodiversity loss on ecosystem processes is very limited. Specimens belonging to four families of Heteroptera: Pentatomidae, Coreidae, Alydidae and Rhopalidae, were collected from a protected area in the Paraná Forest, the largest ecoregion of the Atlantic Forest, in Argentina. The assemblages were characterized and the biodiversity estimated, and they were compared with the assemblages found in five other protected areas in the Brazilian Atlantic Forest. In our study area, Pentatomidae had the greatest richness and diversity; Coreidae was the second most diverse family, with highest sampling deficit,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemiptera; Insects; Conservation; Diversity; Paraná Forest; South American Atlantic Forest.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100109

Evaluation of foliar fungal endophyte diversity and colonization of medicinal plant Luehea divaricata (Martius et Zuccarini)
Provedor de dados: 48
Autores: Bernardi-Wenzel,Juliana; García,Adriana; Filho,Celso J R; Prioli,Alberto J; Pamphile,João A.
Endophyte microorganisms are organisms that live inside plants without causing any apparent damage to their hosts. Since all plants exhibit endophyte microorganisms, it is believed that mutual association is of great importance in nature. Luehea divaricata (Martius &amp;amp; Zuccarini), known popularly in Brazil as agoita-cavalo, is a big-sized tree with a wide distribution in the country that possesses medicinal qualities for: dysentery, leucorrhea, rheumatism, blennorrhoea, tumors, bronchitis, and depuration. This research aims at isolating and molecularly characterizing fungi isolates from L. divaricata by sequence analysis of ITS1-5.8S-ITS2 rDNA. Further, the colonization of endophyte in the host plant by Light and Scanning Electron Microscopy will...
Tipo: Journal article
Palavras-chave: Endophyte fungi; Luehea divaricata; Diversity; RDNA sequencing; Scanning Electron Microscopy.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000400001

Organic acids, sugars, vitamin C content and some pomological characteristics of eleven hawthorn species (Crataegus spp.) from Turkey
Provedor de dados: 48
Autores: Gundogdu,Muttalip; Ozrenk,Koray; Ercisli,Sezai; Kan,Tuncay; Kodad,Ossama; Hegedus,Attila.
BACKGROUND: The Hawthorn (Crateagus sp.) mostly occurs around the temperate region of the world with a high number of species, producing a fruit with numerous beneficial effects for human health. The aim of the study was to determine organic acid and sugar contents in the fruit of a number of hawthorn species grown in Erzincan province of Turkey. RESULTS: Citric acid was the predominant organic acid in all hawthorn species and C. pseudoheterophylla had the highest citric acid content (23.688 g/100 g). There were not statistically significant differences among hawthorn species (except C. atrosanguinea Pojark) in terms of fumaric acid content. C. pontica C.Koch had a higher content of vitamin C (9.418 mg/100 g) compared to other species. Fructose was the...
Tipo: Journal article
Palavras-chave: Crataegus; Diversity; Fruit characteristics; Organic acids.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100021

Insect galls on Myrtaceae: richness and distribution in brazilian restingas
Provedor de dados: 49
Autores: Maia,Valéria Cid.
Abstract: Inventories in Brazilian restingas have been indicating that Myrtaceae are the plant family with the greatest richness of insect galls. A compilation of published data plus new records was elaborated with the aim of stablishing the number of gall morphotypes on this family in this physiognomy of the Atlantic Forest, producing a list of galled species, pointing out the predominant gall features, evaluating the taxonomical knowledge of the gallers, listing the associated fauna, and based on host plant endemisms and monophagy proposing the endemism of some galling species. Myrtaceae harbor 111 morphotypes of insect gall (about 75% induced by Cecidomyiidae, Diptera) on 25 host plant species, 15 endemic. Eugenia L. highlights as the plant genus with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Diversity; Endemism; Plant-insect interaction.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100601

Amphibians of varzea environments and floating meadows of the oxbow lakes of the Middle Purus River, Amazonas, Brazil
Provedor de dados: 49
Autores: Ramalho,Werther Pereira; Andrade,Murilo Sousa; Matos,Lucicléia Railene Assis de; Vieira,Lisandro Juno Soares.
Despite the historical knowledge on amphibians of the Purus River basin, basic information on assemblages is fragmented, with gaps in knowledge existing at various scales, which limits conservation strategies. This study provides information on the composition, richness and abundance of the amphibian fauna in varzea environments and floating meadows of the oxbow lakes of the Middle Purus River between the Boca do Acre and Pauiní municipalities, Amazonas, Brazil. We sampled six oxbow lakes using forty-seven 200-meter transects, distributed among the "floating meadows," "high varzea" and "low varzea," from April to January 2014. We recorded 59 species, with the family Hylidae being predominant. This amphibian fauna represents approximately 19% of the species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Floodplain; Flood pulse; Diversity; Conservation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000100201

Fauna of mosquitoes (Diptera: Culicidae) in Goytacazes National Forest and surrounding area, State of Espírito Santo, Southeastern Brazil
Provedor de dados: 49
Autores: Virgens,Thieres Marassati das; Rezende,Helder Ricas; Pinto,Israel Souza; Falqueto,Aloísio.
Abstract Mosquitoes comprehend a group with a major impact on public health, because some species transmit parasites vertebrate hosts. Comparative studies between preserved environment and disturbed areas provide important epidemiological information, due to the major knowledge on species populational dynamics and the possibility of a contact between vector species and human population. This work aims to characterize and compare the fauna of mosquitoes in the Goytacazes National Forest (GNF) and surrounding area, in the State of Espírito Santo, in Brazil. Collections occurred simultaneously in a preserved environment and in a peridomicile, from 15:00 to 18:00, between July 2008 and May 2009. In each environment, it was used a modified trap of Shannon type....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Disease Vector; Diversity; Richness; Yellow Fever.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000100204

Composition and diversity of mosquitoes (Diptera: Culicidae) in urban parks in the South region of the city of São Paulo, Brazil
Provedor de dados: 49
Autores: Carvalho,Gabriela Cristina de; Ceretti-Junior,Walter; Barrio-Nuevo,Karolina Morales; Wilk-da-Silva,Ramon; Christe,Rafael Oliveira; Paula,Marcia Bicudo de; Vendrami,Daniel Pagotto; Multini,Laura Cristina; Evangelista,Eduardo; Camargo,Amanda Alves; Souza,Laura Freitas; Wilke,André Barretto Bruno; Medeiros-Sousa,Antonio Ralph; Marrelli,Mauro Toledo.
Abstract Many parks in the city of São Paulo contain remnants of Atlantic Forest. Of the 30 municipal parks in the South of the city, we investigated two in this study (Santo Dias Park and Shangrilá Park) in order to survey their mosquito fauna and investigate the presence of potential bioindicators of environmental conditions and vectors of human pathogens. Mosquitoes were collected monthly between March 2011 and February 2012 using aspirators, Shannon and CDC traps for adult mosquitoes and larval dippers and suction samplers for immature forms. Sampling effort was evaluated by plotting a species accumulation curve, and total richness was estimated using the first-order jackknife. To compare the diversity between the two parks Shannon and Simpson...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Mosquitoes; Composition; Urban parks.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200304

Biological survey of a cloud forest in southwestern Mexico: plants, amphibians, reptiles, birds, and mammals
Provedor de dados: 49
Autores: Almazán-Núñez,R. Carlos; Alvarez-Alvarez,Edson A.; Ruiz-Gutiérrez,Fernando; Almazán-Juárez,Ángel; Sierra-Morales,Pablo; Toribio-Jiménez,Sarahi.
Abstract: Cloud forest ecosystems contain unique flora and fauna characterized by high levels of richness and endemism. However, this ecosystem is one of the most threatened because of land-use changes stemming from anthropogenic activities. Therefore, biological inventories are necessary to adequately assess the effects of land-use changes on species now and in the future. In this study, we conducted an inventory of plants and terrestrial vertebrates (amphibians, reptiles, birds, and mammals) in three fragments of cloud forest in southwestern Mexico. Field work was carried out for 15 days per biological group during distinct time periods (2005-2008). Conventional methods of species capture and observation were employed to record species. Recorded species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cloud forest; Conservation; Diversity; Terrestrial vertebrates; Flora; Species richness.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000200306

Orchid Bees of forest fragments in Southwestern Amazonia
Provedor de dados: 49
Autores: Storck-Tonon,Danielle; Morato,Elder Ferreira; Melo,Antonio Willian Flores de; Oliveira,Marcio Luiz de.
Bees of the tribe Euglossini are known as orchid-bees. In general, areas with more vegetation cover have greater abundance and diversity of these bees. This study investigated the effects of forest fragmentation on assemblages of the euglossine bees in the region of Rio Branco municipality, State of Acre, and surrounding areas. Ten forest fragments with varying sizes were selected for the study and were classified as urban or rural. The bees were sampled between December 2005 and August 2006. A total of 3,675 bees in 36 species and 4 genera were collected. In general abundance and richness of bees did not differ statistically between urban and rural fragments. The index of edge in fragments was a predictor of richness and diversity of bees. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euglossini; Conservation; Diversity; Acre State.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100015

Bignoniaceae in the Raso da Catarina Ecoregion, Bahia, Brazil
Provedor de dados: 49
Autores: Silva,Luiza Regina; Silva-Castro,Milene Maria da; Conceição,Adilva de Souza.
Abstract: This work presents a floristic survey of the family Bignoniaceae in the Raso da Catarina Ecoregion, Bahia, Brazil, considered as the main family of the Brazilian forests lianas. The samples analyzed were collected from September 2012 to May 2014. The analyses were supplemented with botanical collections kept in the herbaria: ALCB, HRB, HUEFS, IPA and PEUFR. The identifications were made based mainly on specialized bibliographies, protologues, photos of type collections and consulting of the collections in the herbaria that were visited. 11 genera and 20 species of the family were recorded. Fridericia Mart. and Handroanthus Mattos were the most representative genera (5spp.), followed by Jacaranda Juss (2spp.). The other genera presented only one...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Semiarid; Caatinga; Taxonomy; Diversity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000400306

Bats in forest remnants of the Cerrado savanna of eastern Mato Grosso, Brazil
Provedor de dados: 49
Autores: Sousa,Ricardo Firmino de; Venere,Paulo Cesar; Faria,Karina de Cassia.
In the state of Mato Grosso, studies aiming to investigate the diversity and richness of bats are still scarce. In the present study, the chiropteran fauna of eastern Mato Grosso (Brazil) was investigated at four sites representing the Cerrado savanna biome with different degrees of anthropogenic impact, in the municipality of Nova Xavantina. Surveys were conducted between January and December, 2010, with a total of 48 nights of mist-netting. A total of 423 bats were captured, representing 25 species distributed in five families. A greater abundance of individuals was recorded at all sites during the rainy season, with considerable variation being observed over the course of the year in species richness and composition, and the abundance of bats. Species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chiroptera; Conservation; Species richness; Diversity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200236

Burseramyia braziliensis, a new species of gall midge (Diptera, Cecidomyiidae, Asphondyliini) associated with Swartzia langsdorffii Raddi (Fabaceae)
Provedor de dados: 49
Autores: Maia,Valéria Cid; Fonseca,Karina Figueiredo.
Burseramyia braziliensis Maia &amp;amp; Fonseca, a new species of Cecidomyiidae (Diptera) that induces leaf galls on Swartzia langsdorffii Raddi (Fabaceae) is described and illustrated (larva, pupa, male and female) based on material from restinga areas of Bertioga, São Paulo, Brazil. Until now, Burseramyia was known from one galling species, Burseramyia burserae Möhn, 1960, restricted to El Salvador. The genus is easily recognizable by the shape of the gonostylus (equally subdivided into toothed and setose portions). The new species differs from the previously described species mainly in the number and shape of terminal papillae (larva), shape of hypropoct (male) and method of pupation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Gall; Neotropical; Restinga; Taxonomy.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000400004

O gênero Mimosa L. (Leguminosae: Mimosoideae) na APA Serra Branca/Raso da Catarina, Bahia, Brasil
Provedor de dados: 49
Autores: Dourado,Diego Augusto Oliveira; Conceição,Adilva de Souza; Santos-Silva,Juliana.
This work consists of a floristic survey of the genus Mimosa L. in APA Serra Branca/Raso da Catarina, located in Jeremoabo, Bahia, Brazil. We analyzed specimens collected from June/2010 to October/2011 and collections deposited in the ALCB, HRB, HUEFS, and MBM herbaria. We registered 11 species distributed in two sections: Mimosa sect. Batocaulon DC. (Mimosa acutistipula (Mart.) Benth. var.acutistipula, M. adenophylla var. mitis Barneby, M. arenosa (Willd.) Poir. var. arenosa, M. caesalpiniifolia Benth., M. lewisii Barneby, M. misera Benth., M. piscatorum Barneby, M. quadrivalvis var. leptocarpa (DC.) Barneby, and M. tenuiflora (Willd.) Poir.) and Mimosa sect. Mimosa (M. pudica var. tetrandra (Humb. &amp; Bonpl. ex Willd.) DC. And M. sensitive L. var....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Diversity; Floristic; Jeremoabo; Semiarid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400225

Diversity and habitat use by snakes and lizards in coastal environments of southernmost Brazil
Provedor de dados: 49
Autores: Santos,Maurício Beux dos; Oliveira,Mauro Cesar Lamim Martins de; Tozetti,Alexandro Marques.
This study examined species composition differences among snake and lizard assemblages from coastal dunes and restinga habitats in southernmost Brazil. Animals were collected between April 2009 and March 2010 using pitfall traps, artificial shelters, and time-constrained searches in grasslands areas susceptible to flooding. Species richness was higher in the restinga, but lower than the observed in other Brazilian biomes, possibly associated with more unstable microclimate conditions and low habitat complexity (vertical and horizontal distribution of the vegetation) in this habitat. This hypothesis is supported by the fact that the most abundant species of both snakes and lizards have fossorial habits. The assemblage of snakes is apparently mainly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Lizards; Restinga; Sand dunes; Snakes.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000300008

Mosquito (Diptera: Culicidae) fauna in parks in greater São Paulo, Brazil
Provedor de dados: 49
Autores: Paula,Marcia Bicudo de; Fernandes,Aristides; Medeiros-Sousa,Antônio Ralph; Ceretti-Júnior,Walter; Christe,Rafael; Stroebel,Regina Claudia; Pedrosa,Leila; Almeida,Rosa Maria Marques de Sá; Carvalho,Gabriela Cristina de; Pereira,Uellinton Damasceno; Jacintho,Marcelo Cassiano de Oliveira; Natal,Delsio; Marrelli,Mauro Toledo.
Municipal parks in the city of São Paulo, which are used for leisure purposes, contain remnants of the flora of the Atlantic Forest, as well as lakes and springs, and are home to mammals, birds and arthropods, some of which can be vectors of disease. The eastern side of the city has the largest population in São Paulo and twenty-four municipal parks. The aim of this study was to investigate Culicidae fauna in two parks on this side of the city and to determine which of the Culicidae species identified have the potential to act as bioindicators and vectors of human pathogens. Culicidae were collected monthly between March 2011 and February 2012 in Carmo Park and Chico Mendes Park with battery-powered aspirators, Shannon traps and CDC traps for adult...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Culicids; Mosquitoes; Municipal parks.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000300204

Continental ichthyofauna from the Paraíba do Norte River basin pre-transposition of the São Francisco River, Northeastern Brazil
Provedor de dados: 49
Autores: Ramos,Telton Pedro Anselmo; Lima,Jéssica Alcoforado de Sena; Costa,Silvia Yasmin Lustosa; Silva,Márcio Joaquim da; Avellar,Raizze da Costa; Oliveira-Silva,Leonardo.
Abstract: Freshwater ichthyofauna from Brazil Northeast region was considered as being poorly known until recent years, with a considerable number of publications becoming available in the last decade. The present study provides an inventory of freshwater fish species from the Paraíba do Norte River basin located in Paraíba State, Brazil. This inventory is intended to contribute to the of knowledge to the regional fish diversity, pre-transposition of the São Francisco River. Collecting data was obtained from ichthyological databases of both national and foreign institutions. A total of 47 freshwater fish species are registered within the Paraíba do Norte River basin, represented by 38 genera, 20 families and six orders. Characiformes, comprising 47% (22...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freshwater fishes; Neotropical Region; Diversity; Identification key.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000400207

Fern and lycophyte flora of Acre state, Brazil
Provedor de dados: 49
Autores: Prado,Jefferson; Hirai,Regina Yoshie; Moran,Robbin Craig.
Abstract This paper provides keys, illustrations, short descriptions, and voucher specimen citations for the ferns and lycophytes of Acre, Brazil. We recognize a total of 212 species in 66 genera and 28 families. Of these, the lycophytes are represented by 14 species, 4 genera, and 2 families, and the ferns by 8 varieties, 1 subspecies, 198 species, 62 genera, and 26 families. The total represents an increase of 22 species and two varieties compared to a checklist published in 2009. The six most species-rich genera are Adiantum (21 spp.), Asplenium (14), Selaginella (12), Trichomanes (11), Lindsaea, and Microgramma (9 each). None of the species treated here are endemic to Acre. A new combination is made for Meniscium chrysodioides Fée var. goyazense.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Diversity; Floristics; Pteridophytes; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400304

Temporal and spatial variations in tidepool fish assemblages of the northeast coast of Brazil
Provedor de dados: 49
Autores: Cunha,Francisca Edna de Andrade; Monteiro-Neto,Cassiano; Nottingham,Mara Carvalho.
Temporal and spatial variations and environmental factors influencing the structure of tidepool fish assemblages were quantitatively investigated at Iparana beach, northeast Brazilian coast. The majority of the tidepool fishes sampled were suprabenthic juvenile individuals of great mobility. We recorded during monthly diurnal underwater visual censuses a total of 4,750 fish from 26 species, represented mainly by partial residents from the families Scaridae, Haemulidae, Gerreidae and Pomacentridae. The number of species and individuals showed significant variability among tidepools as a response to variations in their volume and type of substrate cover. The greatest species abundance and richness associated with rocks covered with algae suggested that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tidepool fishes; Environmental factors; Seasonality; Diversity; Abundance.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000100016

Identification key for lycophytes and ferns from the Picinguaba and Santa Virgínia Nuclei, Parque Estadual da Serra do Mar, Ubatuba, SP, Brazil
Provedor de dados: 49
Autores: Nóbrega,Giseli Areias; Aidar,Marcos Pereira Marinho; Paciencia,Mateus; Prado,Jefferson.
Abstract This work contributes to the knowledge of the fern and lycophytes diversity in the Picinguaba and Santa Virginia Nuclei, Parque Estadual da Serra do Mar (PESM), Ubatuba, São Paulo, Brazil, as well as to provide subsidies to identification of the found taxa in these areas. In total, 30 collecting expeditions were conducted and the vouchers were deposited at UEC Herbarium. We have identified 135 species distributed in 53 genera and 19 families for both areas. The most representative families were Polypodiaceae (28 species) and Dryopteridaceae (19 species), whereas Asplenium (12 species), Blechnum and Elaphoglossum (8 species each) were the most important genera. Epiphytic species predominated (62 overall), probably due to the presence of favorable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floristics; Taxonomy; Diversity; Atlantic Rain Forest.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000400801

Edge effects and the impact of wildfires on populations of small non-volant mammals in the forest-savanna transition zone in Southern Amazonia
Provedor de dados: 49
Autores: Mendes-Oliveira,Ana Cristina; Santos,Paulo Guilherme Pinheiro dos; Carvalho-Júnior,Oswaldo de; Montag,Luciano Fogaça de Assis; Lima,Renata Cecília Soares de; Maria,Suzanne Lúcia Silva de; Rossi,Rogério Vieira.
The impact of fire and edge effects on the community of small non-volant mammals was investigated in transitional Amazon forest within a matrix of soybean plantations. The animals were live trapped on 24 line transects, of which 16 were distributed in unburned areas and 8 in a burned area. A total of 11 species was recorded, including six rodents and five marsupials. The abundance and richness of small mammals appeared to decrease in burned areas, although this impact appeared to mask edge effects. In the absence of fire impacts, a positive relationship was found between mammal abundance and the distance from the forest edge. The impact of the edge effect on the diversity of small mammals appears to be influenced by the type of anthropogenic matrix and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cricetidae; Didelphidae; Diversity; Soybean matrix; Experimental fire.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000300004

A brief inventory of sand flies (Diptera, Psychodidae) from the National Forest of the Rio Preto, state of the Espírito Santo, southeastern Brazil
Provedor de dados: 49
Autores: Pinto,Israel de Souza; Tonini,João Filipe Riva; Ferreira,Adelson Luiz; Falqueto,Aloísio.
The inventories on sand flies are usually conducted for a long period in leishmaniasis-endemic regions. Thus, there is little data on the sand fly fauna in areas where no leishmaniasis cases have been reported. Therefore, we conducted an inventory to study the sand fly fauna in the National Forest of Rio Preto (NFRP). We carried out a brief inventory by using four CDC light traps in 2009 during winter and summer. We collected 1,403 sand flies belonging to 11 genera and 22 species. As expected, we did not find in the NFRP region sand flies species that have been reported as vectors of Leishmania. However, we found some species of sand flies with few records and that rarely have been reported in southeastern Brazil. Nevertheless, the diversity and species...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Phlebotominae; Diversity; Inventory; Atlantic Forest; Leishmaniasis.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000100025

How many species of drosophila (Diptera, Drosophilidae) remain to be described in the forests of São Paulo, Brazil?: species lists of three forest remnants
Provedor de dados: 49
Autores: Medeiros,Hermes Fonsêca de; Klaczko,Louis Bernard.
This paper describes the composition and abundance of Drosophila species found in three forest remnants in the State of São Paulo. A well-standardized sampling procedure applied on four collecting trips to the same sites on four areas resulted on 944 samples. All males collected were identified by analyses of the genitalia, this being the only data set used. One hundred and twenty five species were detected amongst the 29,289 males analyzed. From them 57,6% could be identified as described species. Thirteen of the species found were absent from the previous species list for the state of São Paulo State, thus represent an increase of 13% on the number known. We argue that the majority of the 53 unidentified species are in fact undescribed. The sites studied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composition; Diversity; Richness; Inventory; Atlantic forest; Neotropical region.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032004000100005

Snakes from coastal islands of State of São Paulo, Southeastern Brazil
Provedor de dados: 49
Autores: Cicchi,Paulo José Pyles; Sena,Marco Aurélio de; Peccinini-Seale,Denise Maria; Duarte,Marcelo Ribeiro.
There are relatively few studies on snake fauna from coastal islands of the State of São Paulo (SSP), Southeastern Brazil and the number of species housed in Brazilian institutional zoological collections is relatively limited. In Brazil, for the first time, a snake inventory for eighteen islands of coastal SSP is presented. Here we record data from sampling on eleven islands as well information on vouchered species in the main herpetological collections. Thirty-six species from four families: one Boidae, thirty Colubridae, one Elapidae and four Viperidae from eighteen islands are listed as well as the thirteen new island records for snakes. Relative abundance categories were used for species rarity: common, infrequent and rare; 44.4% of the snakes with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snakes; Coastal islands; Inventory; Conservation; Diversity.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000200026

The genus Chamaecrista Moench in a fragment of the Ecological Station Raso da Catarina, Bahia, Brazil
Provedor de dados: 49
Autores: Correia,Cláudia Letícia de Souza Barros; Conceição,Adilva de Souza.
Abstract Chamaecrista has a Pantropical distribution, with some occurrences in Australia and temperate areas, and includes about 330 species, of which 266 occur in the Americas. The genus is represented in Brazil by 256 species, of which 97 are cited for the northeast Region. The Ecological Station Raso da Catarina (ESRC) is one of the largest areas of protected Caatinga and occupies about 105,282.00 ha., delimited by the coordinates 09°39’0.30” to 09°50’98.2” S and 38°26’57.5” to 38°29’32.6” W. The floristic survey of Chamaecrista in the ESRC included analysis of specimens collected from March 2010 and October 2011. The analyses were supplemented with dried collections from the following herbaria: ALCB, EAC, HRB, HUEFS and MBM. The genus is represented in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floristics; Taxonomy; Semiarid; Caatinga; Diversity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200302

The harvestmen fauna (Arachnida: Opiliones) of the Parque Estadual Carlos Botelho, and the Floresta Nacional de Ipanema, São Paulo, Brazil
Provedor de dados: 49
Autores: Resende,Leonardo Palloni Accetti; Pinto-da-Rocha,Ricardo; Bragagnolo,Cibele.
The harvestmen fauna of the Floresta Nacional de Ipanema (FLONA Ipanema) and Parque Estadual Carlos Botelho (PE Carlos Botelho) were inventoried using nocturnal manual collection and sifting of litter. Fourteen species were recorded from the FLONA Ipanema, a richness and diversity higher than those previously reported for other localities in Atlantic Semi-deciduous Forest. The PE Carlos Botelho, with 38 recorded species, is the third richest site for harvestmen in the state of São Paulo. The estimates of species richness place the FLONA Ipanema with a richness of locations near the Coastal Atlantic Rain Forest. A similarity analysis showed that the areas possess only a few species in common, indicated by the very low of similarities indexes, showing the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Atlantic Semi-deciduous Forest; Coastal Atlantic Rain Forest; Conservation units.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400016

Taxonomic Distinctness of the subterranean fauna from Peruaçu Caves National Park, state of Minas Gerais, eastern Brazil
Provedor de dados: 49
Autores: Monte,Bruno Gabriel Oliveira; Bichuette,Maria Elina.
Abstract: Limiting factors of subterranean environments, high relative air humidity and, especially, permanent darkness, represent ecological filters for organisms and biodiversity patterns of surface and subterranean communities display wide disparities. Subterranean diversity and singularity are, thus, better expressed when the common presence of rare and endemic species are considered. Our study aimed to describe the diversity of the cave fauna from 14 caves from Peruaçu Caves National Park (PCNP), eastern Brazil. We analyzed the regional diversity using the index that includes the average taxonomic distinction (TD - Δ +, AvTD). We recorded 1,674 individuals belonging to 10 Classes and 237 morphotypes, 11 troglobitic and two troglomorphic and possible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Gruta Olhos d’ Água cave; Troglobites; Subterranean environment.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100210

Checklist of the fishes from Jamari River basin, in areas under influence of dams, Rondônia, Brazil
Provedor de dados: 49
Autores: Oliveira,Rianne Caroline de; Deprá,Gabriel de Carvalho; Zawadzki,Cláudio Henrique; Silva,João Carlos Barbosa da; Graça,Weferson Júnio da.
Abstract: The Madeira River is the most extensive tributary of the Amazon River and has the largest diversity of fishes in the world. On its right bank, the Madeira River receives the Jamari River, in which the first hydroelectric power plant (HPP) in State of Rondônia, Samuel HPP, was built. Besides this, other dams were built in the Jamari River and its tributaries, however, the available information in the scientific literature about the ichthyofaunistic diversity of this basin is rare. This work aims to provide an ichthyofaunistic inventory in a region of the Jamari river basin, in the State of Rondônia, where three small hydropower plants (SHPs) were implemented. The ichthyofauna was sampled in 16 expeditions between August 2015 and December 2018....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Species list; Madeira River; Amazon basin; Freshwater fish.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100304

Benthic macroinvertebrate community structure and seasonal variation in a neotropical stream in the State of Alagoas, Brazil
Provedor de dados: 49
Autores: Linares,Marden Seabra; Faccioli,Gregorio Guirado; Freitas,Liriane Monte.
This paper presents a study on the macrobenthic community in the Salvia stream, a headwater stream that runs through a conserved Atlantic forest fragment in the state of Alagoas, Brazil, and identifies the environmental factors that most influence the community structure. Ten sampling sites were chosen, conducting each collection during the rainy season of 2010 and the dry season of 2011. At each site the macroinvertebrates were collected using a D net (0.250 mm mesh). Water samples were collected and taken to the laboratory to analyze Dissolved Oxygen, Conductivity, pH and Alkalinity. Water temperature, surface current speed and depth were measured at the site. Canonical Correspondence was used to analyze the effect of environmental factors on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic insects; Diversity; Environmental factors; Lotic environment; Zoobenthic fauna.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300050

Bats of Buraco das Araras natural reserve, Southwestern Brazil
Provedor de dados: 49
Autores: Cunha,Nicolay Leme da; Fischer,Erich; Carvalho,Luiz Felipe Alves da Cunha; Santos,Carolina Ferreira.
The doline Buraco das Araras is a peculiar environment and important destiny for ecotourism in the Serra da Bodoquena region, Mato Grosso do Sul, Brazil. Here we describe the bat fauna of the doline and surrounding areas, and report its use as dayroost by the bat Nyctinomops laticaudatus. Bats were mist-netted during two field expeditions, in November 2007 and January 2008. We captured 153 individuals of 10 species, mainly N. laticaudatus (n = 90) and Artibeus planirostris (n = 28). This is the first record of N. laticaudatus in the Serra da Bodoquena region; it was captured only in January when leaving the doline in dense flocks at dusk. Phyllostomus hastatus, Micronycteris sanborni, and Molossops temminckii are also new records for the Serra da Bodoquena...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dayroost; Cerrado; Diversity; Doline; Nyctinomops laticaudatus.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000400019

Ichthyofauna of the “Cachoeira de São Roberto” and fishes of lower Preto River, upper Paraná River basin, Brazil
Provedor de dados: 49
Autores: Santos,Ana Cláudia; Gonçalves,Carla Cristina; Carvalho,Fernando Rogério.
Abstract Rheophilic environments typically houses fish species with specific ecological requirements. Thus, the suppression of these environments can lead to damaging impacts to local and regional fauna. In this work the ichthyofauna of the “Cachoeira de São Roberto” was inventoried, with a historical review of fish collected in the lower Preto River basin. The sampling sites included two reaches (named R1 and R2): R1 in the “Cachoeira de São Roberto” and R2 refers to two km upstream. The fishes were sampled bimonthly during one year (April 2013 to February 2014) using small and dip nets. Voucher specimens were catalogued in the Fish Collection of “Departamento de Zoologia e Botânica do Instituto de Biociências, Letras e Ciências Exatas, Universidade...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Rheophilic environment; Small Hydroelectric Plants; Threatened species.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100301

Butterflies of Amazon and Cerrado remnants of Maranhão, Northeast Brazil
Provedor de dados: 49
Autores: Martins,Lucas Pereira; Araujo Junior,Elias da Costa; Martins,Ananda Regina Pereira; Colins,Mairla Santos; Almeida,Gabriela Cristina Fonseca; Azevedo,Gisele Garcia.
Abstract Species inventories are important tools to evaluate biodiversity losses and contribute to the conservation of endangered areas. The Amazon and Cerrado are the largest Brazilian biomes and represent some of the most threatened regions of the country. Due to its location between these biomes, the state of Maranhão, Northeast Brazil, possesses a great variety of habitats and a high local diversity. Nonetheless, few faunistic inventories of diversified groups have been performed in the state. In the specific case of butterflies, a well-known biological indicator, no inventories have been published in the past years. This study aimed to expand the knowledge on the composition of butterflies in Amazon and Cerrado remnants of Maranhão. Butterflies were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tropical forest; Diversity; Lepidoptera; Neotropical region; Savanna.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300303

Anastrepha species (Diptera: Tephritidae), their hosts and parasitoids in the extreme north of Brazil
Provedor de dados: 49
Autores: Marsaro Júnior,Alberto Luiz; Adaime,Ricardo; Ronchi-Teles,Beatriz; Lima,Camila Ribeiro; Pereira,Paulo Roberto Valle da Silva.
This work was carried out in five municipalities of the State of Roraima, Brazil, aiming to record the occurrence of Anastrepha species, their host plants and parasitoids. Fleshy fruits of 21 species of 10 families were sampled from September/2007 to September/2008. We collected 10 species of Anastrepha (Anastrepha bahiensis Lima and Anastrepha montei Lima were reported for the first time in Roraima) and five species of parasitoids (4 Braconidae and 1 Figitidae). Doryctobracon areolatus (Szépligeti) was the most abundant parasitoid.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fruit flies; Diversity; Amazon; Anastrepha bahiensis; Anastrepha montei.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000400012

Ichthyofauna of the Una river in the Paraíba do Sul Paulista River Valley, Southeastern of Brazil
Provedor de dados: 49
Autores: Honorio,Juliano Rodrigues; Martins,Itamar Alves.
Abstract: This study focus on an inventory of the ichthyofauna of the Una river, a tributary of the Paraíba do Sul river, located in the region of Paraíba do Sul River Valley, in the State of São Paulo. Sampling was carried out in three sampling areas along the channel of the Una river between April 2016 and March 2017. For the collection of fish specimens, was used angling, fyke nets, cast nets, dragnets and hand nets. A total of 1.534 specimens were collected, which corresponds to five different orders, 14 families, 26 genera and thirty species. The study revealed that the most significant number of reported species are from the orders Siluriformes and Characiformes. The Characidae family was the most representative concerning the wealth of species and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Introduced species; New occurrence records; Diversity; Endemic species.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000400304

Snake assemblage of Ilha de São Sebastião, southeastern Brazil: comparison to mainland
Provedor de dados: 49
Autores: Centeno,Fernanda da Cruz; Sawaya,Ricardo Jannini; Marques,Otavio Augusto Vuolo.
We provide a checklist of snake species from Ilha de São Sebastião (Ilhabela), the largest coastal island in Brazil located on the northern coast of São Paulo state. We also compare snake diversity (including richness and relative abundance of species) of Ilhabela and the nearest mainland municipality, São Sebastião. We obtained the data from the herpetological collections of the Instituto Butantan and Museu de Zoologia of Universidade de São Paulo, including records from 1939 to 2005. We recorded twenty snake species from Ilhabela (N = 376 individuals), and the dominant species was the viperid Bothrops jararaca with 55% of dominance. In São Sebastião we recorded 27 species (N = 625), and Bothrops jararaca was also the dominant species, but with 25% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snakes; Island; Diversity; Richness; Dominance; Atlantic Forest.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000300005

Boraginales Juss. ex Bercht. &amp;amp; J.Presl in the Ecoregion Raso da Catarina, Bahia, Brazil
Provedor de dados: 49
Autores: Vieira,Diego Daltro; Melo,José Iranildo Miranda de; Conceição,Adilva de Souza.
Raso da Catarina is one of the eight Ecoregions recognized for the Caatinga biome. This work includes the taxonomic study of Boraginales Juss. ex Bercht. &amp; J.Presl in the Ecoregion Raso da Catarina, Bahia state, Brazil. The samples analyzed were collected from March 2009 to July 2013. The analyses were supplemented with dried collections kept in the herbaria: ALCB, IPA, HRB, HST, HTSA, HUEFS, HVASF, PEUFR and UFP. Two families, five genera and 16 species were recorded. The Cordiaceae family was represented by genera Cordia L. [C. glabrata (Mart.) A.DC., C. rufescens A.DC., C. superba Cham. and C. trichotoma (Vell.) Arráb. exSteud.] and Varronia P.Browne [V. curassavica Jacq., V. globosa Jacq., V. leucocephala (Moric.) J.S.Mill. and V. leucomalloides...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floristic; Taxonomy; Semiarid; Caatinga; Diversity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000300206

Distribution of frogs in riparian areas of an urban forest fragment in Central Amazonia
Provedor de dados: 49
Autores: Tsuji-Nishikido,Bruno Minoru; Menin,Marcelo.
This study aimed to evaluate how environmental variables (width of valley, stream size, forest edge distance, and leaf-litter depth) affect the abundance and richness of species of frog species in riparian areas of an urban forest fragment in Central Amazonia. The study was conducted at the campus of the Universidade Federal do Amazonas, Manaus, Brazil, between May 2008 and April 2009, when three nocturnal and diurnal samples were taken from ten plots. A total of 17 species belonging to seven families were registered. The number of species recorded per plot varied from seven to 14. We detected a relationship between the edge distance and richness: the plots with lower richness were located near the fragment border. The variables had no significant effect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Anura; Edge effects; Diversity; Environmental variables.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000200007

Butterflies (Lepidoptera: Papilionoidea) from the campos rupestres of Serra de São José, Minas Gerais, Brazil
Provedor de dados: 49
Autores: Henriques,Nathália Ribeiro; Beirão,Marina do Vale; Brasil,Ello; Cornelissen,Tatiana.
Abstract We provide the first inventory of butterfly species (Lepidoptera: Papilionoidea) in Serra de São José, Minas Gerais, Brazil. Serra de São José has elevations ranging from 800 m to 1,400 m above sea level; the butterflies were sampled using traps and entomological nets in seven plots along the altitudinal gradient. We recorded 647 butterflies belonging to 112 species and six families. We also recorded one threatened species and three endemic species for the Cerrado domain, which suggests that Serra de São José is an important refuge for butterfly conservation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Conservation; Diversity; Inventory; Species richness; Threatened species.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000300305

Taxonomy of Aspidosperma Mart. (Apocynaceae, Rauvolfioideae) in the State of Pará, Northern Brazil
Provedor de dados: 49
Autores: Pereira,Andreza Stephanie de Souza; Simões,André Olmos; Santos,João Ubiratan Moreira dos.
Aspidosperma Mart. is one of the most important genera from Apocynaceae Juss. occurring in Brazil. It is present in many plant formations and has species with both medicinal and economic value. From a taxonomic point of view, many of its species are difficult to identify, especially those occurring in the Amazonian region. In order to complement the information already available with regard to the taxonomy and distribution of the genus, the goal of this work was to provide a taxonomic study of the Aspidosperma species occurring in the state of Pará, northern Brazil. This study was based on the analysis of vouchers from the BHCB, HBRA, IAC, IAN, INPA, MG, R, RB and UEC herbaria, as well as scanned images of vouchers from Brazilian and foreign herbaria, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspidospermeae; Diversity; Eastern Amazon; Floristic; Morphology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000200301

Coleoptera associated with pig carcass exposed in a forest reserve, Manaus, Amazonas, Brazil
Provedor de dados: 49
Autores: Mise,Kleber Makoto; Souza,Alex Sandro Barros de; Campos,Claudimir de Menezes; Keppler,Ruth Leila Ferreira; Almeida,Lúcia Massutti de.
The Coleoptera fauna of forensic importance associated with Sus scrofa Linnaeus, 1758 carcass decomposition in Ducke Reserve, Manaus, Brazil, was determined. A total of 41 species, belonging to six families and 11 subfamilies were collected. Staphylinidae presented the higher richness with 17 species sampled, followed by Histeridae, with 11 and Scarabaeidae with nine species. Euspilotus azureus (Sahlberg, 1823) (Histeridae), Aleochara sp. (Staphylinidae) and Oxelytrum cayennense (Stürm, 1826) (Silphidae) occurred in all stages of decomposition. Omalodes lucidus Erichson, 1824 and Scapomegas auritus Marseul, 1855 (Histeridae) are recorded for the first time in the Amazon, being also reported for the first time associated with a decomposing carcass. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beetles; Forensic entomology; W records; Diversity; Amazon Rain Forest.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000100027

Frugivorous butterflies from the Atlantic Forest in Southern Brazil (Lepidoptera: Nymphalidae)
Provedor de dados: 49
Autores: Bordin,Sandra Mara Sabedot; Monteiro,Marcelo; Ferreira,Valéria Wesner; Lutinski,Junir Antonio; Rodrigues,Everton Nei Lopes.
Abstract: This study aimed to present a list of the species of frugivorous butterflies occurring in Atlantic Forests, in the Conservation Units: National Forest of Chapecó (FLONA), Ecological Station of Mata Preta (ESEC) and State Park of Araucárias (PAEAR) and adjacent forest fragments, located in the western region of the state of Santa Catarina. Three samplings were conducted between December 2017 and March 2018, totaling 24 days of collection in each sampling area. Van Someren-Rydon traps were used to capture frugivorous butterflies. There were 4,231 frugivorous butterflies belonging to four subfamilies, 12 tribes and 49 species. In all, 37 species of frugivorous butterflies were sampled in FLONA and 29 in adjacent forest fragments. In ESEC, 29 species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation; Diversity; Ecology; Forest fragmentation; Species richness.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000400310

New group, new species and new records from Brazil of the atropos, brasilianus and giganteus groups (Blattaria, Blaberidae, Blaberinae)
Provedor de dados: 49
Autores: Lopes,Sonia Maria; Oliveira,Edivar Heeren de.
This paper presents 20 species of the genus Blaberus (Blaberidae) included in the atropos, brasilianus and giganteus groups. A new group is defined, and 12 new species are described. The genitalia of the eight known species are described. The descriptions are based on the morphology of the head, thorax and abdomen, illustrating the structures of the genitalia and variations in the form of the structures, some within the same species. New records for five known species are discussed. All material is deposited in the collection of the Museu Nacional of Rio de Janeiro.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blattaria; Morphology; Diversity; New taxon; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200081

Turtles of the Tiputini Biodiversity Station with remarks on the diversity and distribution of the Testudines from Ecuador
Provedor de dados: 49
Autores: Cisneros-Heredia,Diego F.
Ten species of Testudines, from four different families: Chelidae, Kinosternidae, Podocnemididae, and Testudinidae, are reported from the Tiputini Biodiversity Station (Universidad San Francisco de Quito), northeastern Amazonian Ecuador; including the second report from Ecuador of Batrachemys heliostemma. These ten species are sympatric but not completely syntopic, thus I comment on their diversity and habitat preferences patterns. The general distribution of some turtles from Amazonian Ecuador is discussed, providing additional records and distribution maps for Chelus fimbriatus, Platemys platycephala, Batrachemys heliostemma, Batrachemys raniceps, Mesoclemmys gibba, Phrynops geoffroanus, Kinosternon scorpioides, and Geochelone denticulata. The presence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reptilia; Testudines; Chelidae; Kinosternidae; Podocnemididae; Testudinidae; Chelus fimbriatus; Platemys platycephala; Batrachemys heliostemma; Batrachemys raniceps; Mesoclemmys gibba; Phrynops geoffroanus; Kinosternon scorpioides; Geochelone denticulata; Podocnemis expansa; Podocnemis unifilis; Peltocephalus dumerilianus; Diversity; Habitat preferences; Distribution; Checklist; Amazonia; Ecuador.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000100011

Characterization of insect galls, gall makers, and associated fauna of Platô Bacaba (Porto de Trombetas, Pará, Brazil)
Provedor de dados: 49
Autores: Maia,Valéria Cid.
Seventy six morphotypes of insect galls were found on 38 plant species and one subspecies distributed among 27 genera and 22 families in Platô Bacaba (Porto de Trombetas, Pará, Brazil). The majority of these galls (about 80%) occurred on leaves and 20% on stems. Burseraceae was the plant family with the greatest number of gall morphotypes (N = 23), followed by Fabaceae (N = 11) and Melastomataceae (N = 6). Protium Burm. f. (N = 17), Inga Miller (N = 8), and Tetragastris Gaertn (N = 6) were the plant genera, and Protium sagotianum Marchand (N = 7), Tetragastris panamensis (N = 6), and Miconia stenostachya DC. (N = 5) were the plant species that supported the highest diversity of galls. The galling inducers belong to Diptera (Cecidomyiidae) and Lepidoptera...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian Forest; Cecidomyiidae; Diptera; Diversity; Insect galls; Gallers.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000400003

Turbelários límnicos (Platyhelminthes) em ecossistemas de arroz irrigado da Planície Costeira do sul do Brasil
Provedor de dados: 49
Autores: Vara,Dioneia Conceição da; Leal-Zanchet,Ana Maria.
Turbellarians occur in a variety of wetlands, being also abundant in temporary water bodies. Several turbellarians are top predators in their microhabitats, many of them feeding on zooplankton. However, they are seldom taken into account in biodiversity studies. Information on turbellarian diversity in Brazilian freshwater ecosystems mainly came from taxonomical studies. In southern Brazil, there are a high number of wetlands, most of them represented by rice fields. Despite their impact on natural areas, these managed ecosystems can play an important role in freshwater biodiversity conservation. The aim of the present work was to report on an inventory done in irrigated rice fields of three areas of the Coastal Plain of southern Brazil, viz. Cachoeirinha,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microturbellarians; Triclads; Diversity; Inventory; Temporary wetlands.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400241

New species of Eublaberus Hebard, 1920, new records for the genus and description of the male of E. variegatus R. S. Albuquerque, 1972 (Blaberidae, Blaberinae)
Provedor de dados: 49
Autores: Lopes,Sonia Maria; Oliveira,Edivar Heeren de; Khouri,Andrea.
A new species of Eublaberus (E. serranus sp. nov), also a new record for the genus in Southern Brazil, is described based on the male genitalia. The name Eublaberus variegata is corrected to Eublaberus variegatus Rocha e Silva Albuquerque, and the male of the species is described. Illustrations of the genitalia of the two species mentioned are presented and a key to species is also given.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blattaria; Morphology; Diversity; New taxon; Taxonomy.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200101

Ant community richness and composition across a gradient from Eucalyptus plantations to secondary Atlantic Forest
Provedor de dados: 49
Autores: Suguituru,Silvia Sayuri; Silva,Rogério Rosa; Souza,Débora Rodrigues de; Munhae,Catarina de Bortoli; Morini,Maria Santina de Castro.
Secondary forests and exotic tree plantations are expanding across tropical landscapes. However, our current understanding of the value of these human-dominated forest landscapes for invertebrate biodiversity conservation is still very poor. In this paper, we use the leaf-litter ant fauna to assess invertebrate diversity in one commercially managed Eucalyptus plantation (four years old), two abandoned plantations of different regeneration ages (16 and 31 years), and one neighboring secondary Atlantic Forest in Southeastern Brazil. There was a clear gradient in species richness from the secondary forest to the managed Eucalyptus plantation; richness and diversity peaked in secondary forest and in the older regenerating Eucalyptus plantation. Significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Formicidae; Habitat modification; Eucalipt plantations; Diversity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000100034

Phanerogamic flora of the Catimbau National Park, Pernambuco, Brazil
Provedor de dados: 49
Autores: Athiê-Souza,Sarah M.; Melo,José Iranildo Miranda de; Silva,Luan Pedro da; Santos,Leidiana Lima dos; Santos,Juliana Silva dos; Oliveira,Luciana dos Santos Dias de; Sales,Margareth Ferreira de.
Abstract: Specimens of phanerogamic plants from the Catimbau National Park, located in northeastern Brazil, were collected during extensive fieldwork and analyzed together with information gathered from the specialized literature. A total of 613 species was recorded, belonging to 366 genera and 85 families. The largest families were Fabaceae, Poaceae, Euphorbiaceae, Asteraceae, Convolvulaceae, Malvaceae, Myrtaceae, Apocynaceae, Malpighiaceae, and Cyperaceae, comprising almost 60% of the species. The level of endemism found was below that projected in the literature, as only four known species are unique to the study area. The area is, however, home to a varied flora with high richness and numerous rare or threatened species, demonstrating the importance of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation; Diversity; Flora; Northeastern Brazil.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100302

Spatial and temporal variation of fish larvae in a hypersaline bay of the Colombian Caribbean
Provedor de dados: 50
Autores: Gallego Zerrato,Juan José; Giraldo,Alan.
ABSTRACT Spatial distribution patterns and the diversity of organisms are the result of evolution, biogeography and the interaction between the local abiotic and biotic factors that operate at different temporal and spatial scales. This paper describes the spatial and temporal dynamics of the assembly of larval stages of fish in Bahía Portete and evaluates the relationship between spatial and temporal variation in abundance and local oceanographic conditions. Oceanographic and biological information was obtained from two sampling campaigns in July (dry season) and November (rainy season) 2015 to incorporate these contrasting climatic conditions. During each sampling campaign a mesh of 21 stations was performed, distributed in a systematic way in the Bay....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Portete Bay; Diversity; Assembly; Guajira; Ichthyoplankton.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612018000100117

Copepods, hydromedusae and siphonophores: Diversity and distribution in the Gerlache Strait, Antarctic Peninsula
Provedor de dados: 50
Autores: Dorado-Roncancio,Edgar Fernando; Cedeño-Posso,Cristina.
ABSTRACT Project Biodiversity and oceanographic conditions of the strait of Gerlache “Biogerlache-Antarctica”, aims to carry out the characterization of the Antarctic fauna of the strait, generating new contributions to the biological inventories of Antarctica. Present work focuses on the biodiversity of the zooplanktonic community, specifically on copepods, hydromedusae and siphonophorae collected during the III Antarctic Expedition of Colombia “Admiral Padilla” (2016-2017). Sampling was carried out in seven oceanographic stations located along the Gerlache strait, with vertical trawls between the maximum depth of the station and the surface. 4100 organisms belonging to 38 species of the phylum Arthropoda (Orders Calanoid and Cyclopoid) and 10 species of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antarctic Ocean; Zooplankton; Diversity; Metridia gerlachei; Dimophyes arctica.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000300169

Two new records of the family Lobariaceae (Lichenized Ascomycota: Peltigerales) from Argentina
Provedor de dados: 51
Autores: PASSO,ALFREDO; VIDAL-RUSSELL,ROMINA; SCERVINO,JOSE MARTÍN; MESSUTI,MARÍA INÉS.
As part of long term studies focused in the lichenized mycobiota diversity from southern Argentina, two species of the family Lobariaceae (Peltigerales), Pseudocyphellaria pluvialis and Sticta longipes, are registered for the frst time in Argentina. These species were previously reported as endemic from southern Chile. Brief descriptions, illustrations and information about the distribution and ecology of the species are provided.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Distribution; Diversity; Pseudocyphellaria; Sticta; South America.
Ano: 2018
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722018000100001

Genetic variability in clones of 'Prata Anã' bananas based on phenotypic and molecular markers
Provedor de dados: 53
Autores: Rodrigues,Francisco Ermelindo; Librelon,Samira Santiago; Nietsche,Silvia; Costa,Márcia Regina; Pereira,Marlon Cristian Toledo.
The objective of this study was to examine the molecular and phenotypic variability of 'Prata Anã' banana clones cultivated in northern Minas Gerais State. For the phenotypic and molecular characterization, the clones were collected from five properties. The morphological characterization of 20 clones was accomplished through a qualitative evaluation of 74 descriptors. For the molecular evaluations, 45 clones were collected, and 14 Random Amplified Polymorphic DNA primers were used. Among the 74 morphological descriptors evaluated in the 20 'Prata Anã' banana tree clones, 53 descriptors presented in the same homogeneous class for all clones. The presence of anthocyanin in the pseudostem (ANT) and the shape (BUS) and flexion (FLX) of the bunch clearly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp.; Morphological variation; Diversity; Clonal population; RAPD.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000200005

Effects of plant cover on the macrofauna of Spartina marshes in northern Brazil
Provedor de dados: 52
Autores: Braga,Cesar França; Beasley,Colin Robert; Isaac,Victoria Judith.
Data on macrofauna density and diversity, and the height and density of Spartina brasiliensis, were obtained from salt marsh beds of a tropical estuary in northern Brazil. Sampling was carried out at four distinct times of the year, during the wet and dry seasons and in the transition periods between these. Sampling was also carried out in salt marshes of three size classes, small, medium and large. Variables were analyzed in relation to time of year and salt marsh size class. Overall, 46 taxa were found, with polychaetes, isopods and the gastropod Neritina virginea dominating the fauna. Macrofauna density and diversity were positively correlated with culm density, indicating a possible role in protection from predation. All the three variables were higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrofauna; Spartina; Density; Diversity; Seasonality; Tropical estuary.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600013

Coprophilous fungi from Brazil
Provedor de dados: 52
Autores: Richardson,Michael J.
Thirty-two species of coprophilous fungi were recorded from seven dung samples collected from the state of Matto Grosso do Sul, Brazil, and incubated in moist chambers. Descriptions of some of the more interesting fungi are given, and aspects of their biodiversity and ecology are discussed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascomycetes; Coprophilous fungi; Diversity; Species richness.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000300010

Limnological characteristics and seasonal changes in density and diversity of the phytoplanktonic community at the Caçó pond, Maranhão State, Brazil
Provedor de dados: 52
Autores: Dellamano-Oliveira,Maria José; Senna,Pedro Américo Cabral; Taniguchi,Glória Massae.
Seasonal changes of the phytoplanktonic community and limnological abiotic characteristics of Caçó pond (Maranhão State, Brazil) was evaluated from two field researches during the rainy (April 1999) and dry (November 1999) seasons. Measurements of twelve chemical and physical variables and phytoplankton collections were carried out at eight sampling stations. The Chlorophyceae and Cyanobacteria groups were in highest fractions during the rainy and dry seasons, respectively. The limnological abiotic variables showed a homogenous spatial distribution. The cluster analysis, using Bray-Curtis distance, distinguished two major groups, represented by the most common and abundant species in both the periods. The results showed that the climate regime, due to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seasonality; Phytoplankton; Diversity; Tropical region.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400019

Genetic Diversity of Some Capparis L. Species Growing in Syria
Provedor de dados: 52
Autores: Al- Safadi,Bassam; Faouri,Hussam; Elias,Rana.
This work investigated the genetic diversity and relationships among Capparis species growing in Syria using IRAP and ISSR techniques. Forty-seven samples of three Capparis species genotypes were collected from 21 different locations in Syria. The genotypes were morphologically identified based on the descriptions available in the literature. When IRAP technique was used, an average of 71.5% of the amplified fragments were polymorphic compared to 82.04% in ISSR. Morphological characterization along with the cluster and PCoA analyses of the data divided the studied genotypes into three groups. The groups included genotypes identified as Capparis spinosa L, C. sicula Duh., and C. aegyptia Lam. Based on the morphological description, molecular studies and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capparis; Diversity; ISSR; IRAP; Syria.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600916

Diel Variations and Ecological Aspects in Fish Assemblages of a Sandy Beach in the Semi-Arid Region of Northeast Brazil.
Provedor de dados: 52
Autores: Dantas,Natália Carla Fernandes Medeiros; Silva Júnior,Carlos Antônio Beserra; Lippi,Daniel Lino; Feitosa,Caroline Vieira.
ABSTRACT For the demersal fish that inhabit sandy beaches, the variation between day and night periods represents a determinant factor in their behavior, especially for species that live in shallow waters. This research aims at determining whether there are differences in the fish assemblage structure of the sandy beach of São Cristóvão, RN, Brazil, between diurnal and nocturnal periods. Samplings were carried out in 2011, during spring high tide period, with an otter trawl net. Dissimilarity between diurnal and nocturnal fish assemblages was confirmed by PERMANOVA results. No statistical differences were observed for richness and diversity of fish assemblage between day and night periods. The first and third order carnivores were the significantly more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Demersal ichthyofauna; Density; Diversity; Total length; Day; Night.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100347

Ardra profiles of bacteria and archaea in mangrove sediments with different levels of contamination in the estuarine complex of Paranaguá, Brazil
Provedor de dados: 52
Autores: Ribeiro,Catherine Gérikas; Steffens,Maria Berenice Reynaud; Etto,Rafael Mazer; Galvão,Carolina Weigert; Martins,César de Castro; Pedrosa,Fábio de Oliveira; Kolm,Hedda Elisabeth.
The mangrove's sediments from the coastal areas under human activities may contain significant contaminations by hydrocarbons, even when there are no visual evidences of it. The microorganisms are essential to these ecosystems, especially in the control of their chemical environment. Sediment samples were collected in two regions under different environment conditions (pristine and contaminated) of the Paranaguá Estuarine Complex (Paranaguá Bay and Laranjeiras Bay), Brazil. Aliphatic hydrocarbons were determined by the GC-FID to assess the status of contamination of the studied areas. The total DNA was extracted from these samples. The 16S rRNA gene was amplified by the PCR reactions with the pair of primers 21F and 958R for the archaeal domain, and 27F...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Mangroves; Archaea; Bacteria; 16S rRNA; ARDRA; Aliphatic hydrocarbons.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200013

Diversity of Endophytic and Epiphytic Bacteria From Sugarcane in Khuzestan, Iran
Provedor de dados: 52
Autores: Rezamahalleh,Hossein Moazzen; Khodakaramian,Gholam; Hassanzadeh,Nader.
Abstract Diverse microorganisms are living as endophytes in plant tissues and as epiphytes on plant surfaces in nature. Commercial formulations of bacteria antagonist to plant pathogenic microbes and ice nucleation active bacteria have been utilized as an environmentally safe method to manage plant disease and to prevent frost damage respectively. Bacteria were isolated from the leaf and sheath of sugarcane (CP69-1026 CP57-614, CP48-103, CP73-21, and CP70-1143 cultivars) verities grown in the ﬁeld in Khuzestan province, Iran. Bacteria were found in both sheaths and leaves of sugarcane plants which they were signiﬁcantly higher in density in leaves and which most were endophytic. The bacterial strains were 10 groups on the basis of the biochemical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 16S rRNA; Diversity; Endophytic bacteria; Sugarcane; Khuzestan.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100429

Majoid crabs community (Crustacea: Decapoda) from infralittoral rocky/sandy bottom of Anchieta Island, Ubatuba
Provedor de dados: 52
Autores: Biagi,Renata; Melo,Gustavo A. S.
The aim of the present study was to characterize the composition of Majoidea crabs inhabiting the infralittoral rocky/sandy bottom of Anchieta Island (Ubatuba), from north coast of São Paulo State. Crabs were collected monthly during 1999 and 2000 by using SCUBA and cages. The occurrence of eight species of majoids (Epialtus brasiliensis, Mithraculus forceps, Mithrax braziliensis, Mithrax hispidus, Mithrax tortugae, Pelia rotunda, Pitho lherminieri and Stenorhynchus seticornis) was registered and corresponded to 24.2% of total of majid crabs recorded in the coast of São Paulo State. Mithraculus forceps, Mithrax tortugae and Stenorhynchus seticornis were most abundant in samples and constituted populations that belonged to the brachyuran community of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachyura; Majoidea; Diversity.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000200015

Phenotypic Diversity of Apple (Malus sp.) Germplasm in South Serbia
Provedor de dados: 52
Autores: Mratinić,Evica; Akšić,Milica Fotirić.
To determine the overall degree of polymorphism, detect similarities among the accessions and collect highly valued genotypes of native apples, 21 characters of 18 autochthonous apple cultivars were studied for three years. Particular individual accessions were selected from the south region of Serbia according to economically valuable characters and tested in situ. Agronomic evaluation of germplasm accessions revealed considerable diversity among different accessions for all the characters studied. The analysis of variance revealed significant differences among the accessions and among years for some characters as well. Cluster analysis distinguished Malus sp. accessions into three distinct groups. Despite of the significant differences among the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apple; Cluster analysis; Diversity; Genetic resources.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000300004

Diversity and seasonal changes in the ichthyofauna of rocky tidal pools from Praia Vermelha and São Roque, Santa Catarina
Provedor de dados: 52
Autores: Barreiros,João P.; Bertoncini,Áthila; Machado,Leonardo; Hostim-Silva,Maurício; Santos,Ricardo Serrão.
A survey of the tidal pool fish community was carried out between April 1998 and May 1999, at the beaches of Praia Vermelha (PV) and São Roque (SR), Santa Catarina, Brazil. The pool of PV was bigger and closer to the subtidal. Specimens were collected monthly at low tide, using quinaldine. In PV we collected 1287 fish belonging to 19 species and in SR 553 fish were caught corresponding to 11 species. In both pools, dominant species were Bathygobius soporator (Gobiidae), Abudefduf saxatilis (Pomacentridae), Parablennius pilicornis (Blenniidae), Gobiesox barbatulus (Gobiesocidae), Labrisomus nuchipinnis (Labrisomidae) and Epinephelus marginatus (Serranidae). Summer months had higher abundance and diversity values, and correspond to a recruitment season for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyofauna; Rocky tidal pools; Diversity; Santa Catarina; Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000200017

Variaciones espaciales y temporales del fitoplancton en un lago subtropical de Argentina
Provedor de dados: 57
Autores: ZALOCAR DE DOMITROVIC,YOLANDA; ASSELBORN,VIVIANA M.; CASCO,SYLVINA L.
Species composition, biomass and diversity of the phytoplankton in a subtropical lake (27°29'S; 58°45'W) were studied from February 1995 to March 1996. One or two samples were taken monthly in the limnetic and the littoral area. Cell counts were done by the Utermöhl method (1958). Phytoplankton biomass varied among 2.38 and 45.59 mm³.m-2 with a mean value of 12.11 (±10.52) mm³.m-2. The population density oscillated among 0.3x10(6) and 4.7x10(6) ind.cm-2. Cyanophyta was the dominant group all the year contributing among 25% and 83% of the total biomass. Cylindrospermopsis raciborskii, Aphanizomenon sp. and Microcystis aeruginosa were the dominant species. The Chlorophyta, second group in importance, contributed among 8% and 50% being Botryococcus braunii...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Subtropical lake; Phytoplankton; Composition; Biomass; Diversity.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081998000300003

Diversity and habitat preference of aquatic insects along the longitudinal gradient of the Macaé River basin, Rio de Janeiro, Brazil
Provedor de dados: 57
Autores: BAPTISTA,D. F.; BUSS,D. F.; DORVILLÉ,L. F. M.; NESSIMIAN,J. L.
Diversity and habitat preference of macroinvertebrates were studied in Macaé River basin, Rio de Janeiro State, Brazil, along its longitudinal gradient. We selected stream reaches corresponding to 1st, 2nd, 4th, 5th and 6th orders. A Surber sampler was used to collect four macroinvertebrates samples of each substrate (sand, litter in pool areas, stones, and litter in riffle areas) during the three sampling periods, defined based on the rain regime: April (end of the rainy season), July (dry season), and October (beginning of the rainy season). We identified 46,431 specimens corresponding to 117 taxa. Analysis of diversity numbers (both for family or genus level) indicated that all insect taxonomic orders had higher numbers on 2nd order stream reach, except...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Aquatic insects; Longitudinal gradient; Tropical river; Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000200007

Biogeographic and species richness patterns of Gastropoda on the southwestern Atlantic
Provedor de dados: 57
Autores: FLOETER,S. R.; SOARES-GOMES,A.
Patterns of richness and biogeography of Gastropoda molluscs were determined based on lists of species from five sites along the southwestern Atlantic. The analysis of the distribution patterns of these sites confirmed the existence of a broader transition zone between southern Espírito Santo State (21°S) and Rio Grande do Sul State (32°S). This zone is very heterogeneous, presenting a low endemism rate and a significant number of species common to the near provinces, and does not show enough consistency to be considered as an independent biogeographic province as proposed by Palacio (1980). Observing the distribution of species along the southwestern Atlantic we find an increase in the proportion of species with greatest latitudinal ranges (occurring from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogeography; Gastropoda; Southwestern Atlantic; Diversity.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400006

The ichthyofauna of the marginal lagoons of the Sorocaba River, SP, Brazil: composition, abundance and effect of the anthropogenic actions
Provedor de dados: 57
Autores: SMITH,W. S.; BARRELLA,W.
The marginal lagoons of the Sorocaba River fulfil important functions in their lotic ecosystems and for its fish communities, providing shelter, food, and area for fish early stages of development. The lagoons are also an escape from the river pollution since the physical-chemical characteristics of their water are more stable than the river water. Nevertheless, these lagoons are under a series of impacts that contribute to reduce their diversity and stability such as water pollution, deforesting and river dumping. These impacts decrease habitat availability, and modify the fish community structure by reducing the number of species in the Sorocaba River, the floodplains and its marginal lagoons.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish community; Marginal lagoons; Diversity; Pollution; Sorocaba River.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000400012

CD81 binding regions of hepatitis C virus remain conserved after liver transplantation
Provedor de dados: 55
Autores: Lyra,Andre C.; Fan,Xiaofeng; Di Bisceglie,Adrian M.
CD81 is a surface-associated protein expressed in the membranes of mammalian cells. It has been suggested that CD81 interacts with hepatitis C virus E2 protein, and thus might facilitate the entry of HCV into hepatocytes. The envelope-binding site appears to involve amino acids (aa) 480-493 and 544-551 within the E2 glycoprotein. Little is known about the quasispecies genetic diversity of these two regions. We studied four patients who underwent transplantation for HCV-related cirrhosis and who developed recurrent hepatitis C. We evaluated HCV quasispecies diversity in serum samples obtained at the time of transplantation and at several time points thereafter. Quasispecies diversity was assessed by cloning and sequencing of viral isolates, with computer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis C virus; CD81; Diversity.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000200002

Multidrug efflux systems in Escherichia coli and Enterobacter cloacae obtained from wholesome broiler carcasses
Provedor de dados: 58
Autores: Moreira,Maria Aparecida S.; Rodrigues,Patrícia P.C.F.; Tomaz,Rafael S.; Moraes,Célia A. de.
Members of the Enterobacteriaceae family are present in the intestines of man and animals as commensals or are important disease causing agents. Bacteria bearing multidrug efflux systems (MDR) are able to survive adverse ecological niches. Multiresistant Escherichia coli and Enterobacter cloacae isolates from wholesome broiler carcasses were investigated for the presence of MDR. Lowering of Minimal Inhibitory Concentration for antimicrobials in the presence of a proton-motive force (PMF) uncoupler was tested as a potential display of the MDR phenotype. PCR amplification of the genes encoding AcrA and AcrB, components of a MDR system was performed. Diversity of each species was ascertained by Pulsed-Field Gel Electrophoresis (PFGE) of DNA digested with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multiresistance; Antimicrobials; Enterobacteriaceae; Proton-motive force; Diversity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000200007

The diversity, extracellular enzymatic activities and photoprotective compounds of yeasts isolated in Antarctica
Provedor de dados: 58
Autores: Vaz,Aline B. M; Rosa,Luiz H; Vieira,Mariana L. A; Garcia,Virginia de; Brandão,Luciana R; Teixeira,Lia C. R. S; Moliné,Martin; Libkind,Diego; van Broock,Maria; Rosa,Carlos A.
The diversity of yeasts collected from different sites in Antarctica (Admiralty Bay, King George Island and Port Foster Bay and Deception Island) and their ability to produce extracellular enzymes and mycosporines were studied. Samples were collected during the austral summer season, between November 2006 and January 2007, from the rhizosphere of Deschampsia antarctica, ornithogenic (penguin guano) soil, soil, marine and lake sediments, marine water and freshwater from lakes. A total of 89 isolates belonging to the following genera were recovered: Bensingtonia, Candida, Cryptococcus, Debaryomyces, Dioszegia, Exophiala, Filobasidium, Issatchenkia (Pichia), Kodamaea, Leucosporidium, Leucosporidiella, Metschnikowia, Nadsonia, Pichia, Rhodotorula, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yeasts; Antarctica; Diversity; Extracellular enzymes; Mycosporines.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300012

Characterization saprobic fungi on leaf litter of two species of trees in the Atlantic Forest, Brazil
Provedor de dados: 58
Autores: Costa,Loise Araujo; Gusmão,Luís Fernando Pascholati.
Abstract We investigated the composition and structure of fungal communities associated with leaf litter generated by Clusia nemorosa and Vismia guianensis that belong to phylogenetically-related botanical families and exist together in a remnant of the Atlantic Forest in Bahia, Brazil. Samplings were conducted during wet (June 2011) and dry (January 2013) seasons in Serra da Jibóia. The fungi were isolated using particle filtration and the 1,832 isolates represented 92 taxa. The wet season yielded the largest number of isolates (1,141) and taxa (76) compared with the dry season (641 isolates and 37 taxa). The richness and diversity of fungal species associated with C. nemorosa (64 taxa, Simpson=0.95)were higher compared with those of V.guianensis (59...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungal communities; Seasonality; Rainforest; Diversity; Fungal ecology.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401027

Assessment of cowpea rhizobium diversity in Cerrado areas of northeastern Brazil
Provedor de dados: 58
Autores: Zilli,Jerri Édson; Valisheski,Romano Roberto; Freire Filho,Francisco Rodrigues; Neves,Maria Cristina Prata; Rumjanek,Norma Gouvêa.
In order to contribute for the optimization of biological nitrogen fixation (BNF) associated with cowpea in Cerrado areas in the Northeast region of Brazil, this work aimed to analyze the diversity of rhizobial populations in eight areas of Cerrado, during a soybean and rice-cowpea rotation. Morphological traits (mucous production and colony morphology), genotypic analyzes (ARDRA 16S) and intrinsic resistance to antibiotics were determined for a collection of isolates captured using cowpea as a host-plant. The morphological data showed a inverse correlation (p &lt; 0.05) between the number of legume (soybean and cowpea) crops, according to the history of each area, and rhizobium diversity, estimated by the Shannon-Weaver index. ARDRA data showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Bradyrhizobium; Cerrado; Cowpea; Antibiotic.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000300002

Characterization of indigenous rhizobia from Caatinga
Provedor de dados: 58
Autores: Teixeira,Fernanda Cíntia Pires e; Borges,Wardsson Lustrino; Xavier,Gustavo Ribeiro; Rumjanek,Norma Gouvêa.
The aim of this study was to characterize rhizobial isolates from Cratylia mollis Mart. ex Benth, Calliandra depauperata Benth. and Mimosa tenuiflora (Willd.) Poir. by means of rhizobial colonies morphology and restriction analysis of the 16S ribosomal gene (16S rDNA-ARDRA). Nodules were collected in the field and from plants cultivated in a greenhouse experiment using Caatinga soil samples. Sixty seven isolates were described by morphological analysis. Forty seven representative isolates were used for ARDRA analysis using seven restriction enzymes. We observed high diversity of both slow and fast-growing rhizobia that formed three morpho-physiological clusters. A few fast-growing isolates formed a group of strains of the Bradyrhizobium type; however, most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cratylia mollis; Mimosa tenuiflora; Calliandra depauperata; PCR-ARDRA; Diversity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100029

Dynamics and diversity of the bacterial community during the spontaneous decay of açai (Euterpe oleracea) fruits
Provedor de dados: 58
Autores: Moura,Fábio Gomes; Graças,Diego Assis das; Santos,Agenor Valadares; Silva,Artur Luiz da Costa da; Rogez,Hervé.
Abstract The biodiversity and evolution of the microbial community in açai fruits (AF) between three geographical origins and two spontaneous decay conditions were examined by applying culture-independent methods. Culture-independent methods based on 16S rRNA from fifteen samples revealed that Proteobacteria, Firmicutes, Actinobacteria, Bacteroidetes and Acidobacteria were the most abundant phyla. At the genus level, Massilia (taxon with more than 50% of the sequences remaining constant during the 30 h of decay), Pantoea, Naxibacter, Enterobacter, Raoultella and Klebsiella were identified, forming the carposphere bacterial microbiota of AF. AF is fibre-rich and Massilia bacteria could find a large quantity of substrate for its growth through cellulase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food; Microbial contamination; High-throughput partial 16S rRNA gene sequencing; Diversity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500025

Bacterial diversity in rice-field water in Rio Grande do Sul
Provedor de dados: 58
Autores: Reche,Maria Helena Lima Ribeiro; Fiuza,Lídia Mariana.
Bacteria are the most diverse living beings on earth and only a fraction of them have been identified. This paper aims at the analysis of the diversity of mesophilic and heterotrophic bacteria found in samples of irrigation water from rice-fields areas in Rio Grande do Sul State, Brazil. Sample collection was carried out in five rice crop regions areas and followed by isolation, multiplication and bacterial characterization. The species' identification was based on biochemical tests (API-System, bioMérieux). Bacterial diversity was determined by the Shannon &amp;amp; Weaner and Pielou index. The results regarding bacterial diversity revealed 26 species. The most abundant representatives belonged to the Bacillus, Corynebacterium, Staphylococcus and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria; Diversity; Water; Rice-field.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000300009

Seasonality and host preference of arbuscular mycorrhizal fungi of five plant species in the inner Mongolia steppe, China
Provedor de dados: 58
Autores: Su,Yuan-Ying; Sun,Xin; Guo,Liang-Dong.
The seasonal change and host preference of arbuscular mycorrhizal (AM) colonization and community composition of five common plant species Agropyron cristatum, Anemarrhena asphodeloides, Cleistogenes squarrosa, Leymus chinensis, and Stipa grandis in the Inner Mongolia steppe were investigated. The AM root length colonization rates were different among the five plant species and were generally high in early (May and June) and late (September) growth seasons and low in August. A total of 18 AM fungal species representing five genera were isolated from rhizosphere soils of the five plant species, and most AM fungi had not host specificity, except that Acaulospora sp., Glomus constrictum, G. diaphanum and Glomus sp. showed a certain degree of host preference....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seasonal dynamics; Arbuscular mycorrhizal fungi; Diversity; Grassland.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100008

Chromobacterium sp. from the tropics: detection and diversity of phytase activity
Provedor de dados: 58
Autores: Costa,Patrícia S; Nascimento,Andréa M.A; Lima-Bittencourt,Cláudia I; Chartone-Souza,Edmar; Santos,Fabrício R; Vilas-Boas,Adlane.
Phytases are a group of enzymes that catalyze phytic acid hydrolysis with release of phosphorus (P). The ability of Chromobacterium sp. to produce phytase was detected in 115 out of 118 candidate bacteria isolated from different Brazilian biomas. This is the first report revealing the genus Chromobacterium as phytase producer.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromobacterium sp; Diversity; Phytase; Phytate; Tropical bacteria.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100011

Use of molecular approach to verify the influence of a eutrophic lagoon in the nearby ocean's bacterioplankton communities
Provedor de dados: 58
Autores: Taketani,Rodrigo Gouvêa; Araujo,Fábio Vieira; Weerelt,Margaretha Denise Maria van; Sanchez-Nunez,Maria Leonisa; Aniszewski,Erick; Rosado,Alexandre Soares.
Rodrigo de Freitas lagoon is an eutrophic aquatic environment. The waters from the lagoon are released to the sea at Ipanema and Leblon beaches, through Jardim de Alah channel. In this work, the influence of these waters on the bacterial communities of these beaches was investigated. Eleven sampling stations were set between the lagoon and the beaches, and the samples were analyzed by molecular and microbiological parameters. PCR-DGGE of the DNA extracted from the samples was performed using rpoB primers. Preliminary results indicate that all used approaches could reveal the influence of the lagoon on the beaches bacterial communities.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: DGGE; Diversity; Bacterioplankton; Eutrophic lagoon.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500017

Microscopic fungi in the Atlantic Rainforest in Cubatão, São Paulo, Brazil
Provedor de dados: 58
Autores: Schoenlein-Crusius,Iracema Helena; Milanez,Adauto I.; Trufem,Sandra F.B.; Pires-Zottarelli,Carmen L.A.; Grandi,Rosely A. Piccolo; Santos,Maria L.; Giustra,Kátia C.
This article presents a survey of fungi obtained from soil, water and mixed leaf litter samples taken from the Atlantic Rainforest in the municipality of Cubatão, in the State of São Paulo, during the years of 1993 to 1995. Using different techniques for the isolation of microscopic fungi, a total of 280 taxa was obtained (66 zoosporic fungi, 40 Mucorales, 45 Glomales, 125 anamorphs, three Ascomycota and one Basidiomycota), with 23 species being reported for the first time in Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungi; Diversity; Atlantic Rainforest; Brazil.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000300014

Thermophilic bacteria in Moroccan hot springs, salt marshes and desert soils
Provedor de dados: 58
Autores: Aanniz,Tarik; Ouadghiri,Mouna; Melloul,Marouane; Swings,Jean; Elfahime,Elmostafa; Ibijbijen,Jamal; Ismaili,Mohamed; Amar,Mohamed.
The diversity of thermophilic bacteria was investigated in four hot springs, three salt marshes and 12 desert sites in Morocco. Two hundred and forty (240) thermophilic bacteria were recovered, identified and characterized. All isolates were Gram positive, rod-shaped, spore forming and halotolerant. Based on BOXA1R-PCR and 16S rRNA gene sequencing, the recovered isolates were dominated by the genus Bacillus (97.5%) represented by B. licheniformis (119), B. aerius (44), B. sonorensis (33), B. subtilis (subsp. spizizenii (2) and subsp. inaquosurum (6)), B. amyloliquefaciens (subsp. amyloliquefaciens (4) and subsp. plantarum (4)), B. tequilensis (3), B. pumilus (3) and Bacillus sp. (19). Only six isolates (2.5%) belonged to the genus Aeribacillus represented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermophilic bacteria; Hot springs; Diversity; 16S rRNA gene sequencing; Hydrolytic enzymes.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200443

Microbial interactions: ecology in a molecular perspective
Provedor de dados: 58
Autores: Braga,Raíssa Mesquita; Dourado,Manuella Nóbrega; Araújo,Welington Luiz.
ABSTRACT The microorganism-microorganism or microorganism-host interactions are the key strategy to colonize and establish in a variety of different environments. These interactions involve all ecological aspects, including physiochemical changes, metabolite exchange, metabolite conversion, signaling, chemotaxis and genetic exchange resulting in genotype selection. In addition, the establishment in the environment depends on the species diversity, since high functional redundancy in the microbial community increases the competitive ability of the community, decreasing the possibility of an invader to establish in this environment. Therefore, these associations are the result of a co-evolution process that leads to the adaptation and specialization,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial interaction; Diversity; Microbe-host interaction; Molecular interaction.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000500086

Abundance and diversity of ammonia-oxidizing bacteria in relation to ammonium in a Chinese shallow eutrophic urban lake
Provedor de dados: 58
Autores: Qiu,Shanlian; Chen,Guoyuan; Zhou,Yiyong.
The measures of most-probable-number and restriction fragment length polymorphism analysis were used to analyze the abundance and diversity of ammonia-oxidizing bacteria in sediment of a Chinese shallow eutrophic urban lake (Lake Yuehu). Among the 5 sampling sites, ammonia concentration in interstitial water was positively proportional not only to the content of organic matter, but also to ammonia-oxidizing bacteria numbers (at a magnitude of 10(5) cells g-1 dry weight) in sediment significantly. Furthermore, the diversity of ammonia-oxidizing bacteria were determined by means of PCR primers targeting the amoA gene with five gene libraries created and restriction pattern analysis. The 13 restriction patterns were recorded with 4 ones being common among all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia-oxidizing bacteria; Abundance; AmoA; Diversity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100031

Effects of open drainage ditch design on bacterial and fungal communities of cold waterlogged paddy soils
Provedor de dados: 58
Autores: Qiu,Shanlian; Wang,MK; Wang,Fei; Chen,Jichen; Li,Xiaoyan; Li,Qinghua; Lin,Cheng; Lin,Xinjian.
A field experiment established in 1980 was conducted to evaluate the effects of open drainage ditch applied for water removal on bacterial and fungal communities of cold waterlogged paddy soils in 2011. In this experiment, traditional plate counting and temperature gradient gel electrophoresis were employed to characterize the abundance and diversity of soil bacterial and fungal communities. Four different distances from the open drainage ditch, 5, 15, 25 and 75 m with different degrees of drainage were designed for this study. Maximum populations of culturable aerobic bacteria and fungi were at 15-m distance while minimum populations were at 75-m distance. Significant differences (p &lt; 0.05) in fungal populations were observed at all distances from open...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Bacterial and fungal communities; Diversity; Open drainage ditch.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300050

Phenotypic, genetic and symbiotic characterization of Erythrina velutina rhizobia from Caatinga dry forest
Provedor de dados: 58
Autores: Rodrigues,Dalila Ribeiro; Silva,Aleksandro Ferreira da; Cavalcanti,Maria Idaline Pessoa; Escobar,Indra Elena Costa; Fraiz,Ana Carla Resende; Ribeiro,Paula Rose de Almeida; Ferreira Neto,Reginaldo Alves; Freitas,Ana Dolores Santiago de; Fernandes-Júnior,Paulo Ivan.
Abstract Erythrina velutina ("mulungu") is a legume tree from Caatinga that associates with rhizobia but the diversity and symbiotic ability of "mulungu" rhizobia are poorly understood. The aim of this study was to characterize "mulungu" rhizobia from Caatinga. Bacteria were obteined from Serra Talhada and Caruaru in Caatinga under natural regeneration. The bacteria were evaluated to the amplification of nifH and nodC and to metabolic characteristics. Ten selected bacteria identified by 16S rRNA sequences. They were tested in vitro to NaCl and temperature tolerance, auxin production and calcium phosphate solubilization. The symbiotic ability were assessed in an greenhouse experiment. A total of 32 bacteria were obtained and 17 amplified both symbiotic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological nitrogen fixation; "Mulungu"; Diversity; Inoculant; 16S rRNA.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000300503

Bacterial diversity in relatively pristine and anthropogenically-influenced mangrove ecosystems (Goa, India)
Provedor de dados: 58
Autores: Fernandes,Sheryl Oliveira; Kirchman,David L.; Michotey,Valérie D.; Bonin,Patricia C.; LokaBharathi,P.A.
To appreciate differences in benthic bacterial community composition at the relatively pristine Tuvem and the anthropogenically-influenced Divar mangrove ecosystems in Goa, India, parallel tag sequencing of the V6 region of 16S rDNA was carried out. We hypothesize that availability of extraneously-derived anthropogenic substrates could act as a stimulatant but not a deterrent to promote higher bacterial diversity at Divar. Our observations revealed that the phylum Proteobacteria was dominant at both locations comprising 43-46% of total tags. The Tuvem ecosystem was characterized by an abundance of members belonging to the class Deltaproteobacteria (21%), ~ 2100 phylotypes and 1561 operational taxonomic units (OTUs) sharing &amp;gt; 97% similarity. At...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria; Denitrification; Diversity; Mangroves; Sediments.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400006

Genetic and metabolic diversity of pink-pigmented facultative methylotrophs in phyllosphere of tropical plants
Provedor de dados: 58
Autores: Balachandar,D.; Raja,P.; Sundaram,SP.
Diversity of Pink-Pigmented Facultative Methylotrophs (PPFMs) in phyllosphere of cotton, maize and sunflower was determined based on differential carbon-substrate utilization profile and Random Amplified Polymorphic DNA data. Results indicate that six diversified groups of PPFMs are found in these crops. Sunflower and maize phyllosphere harbor four different groups of methylobacteria while cotton has only two groups.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Methylobacterium; Phyllosphere; PPFM; RAPD.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000100017

Genetic Structure and Diversity of Four Chilean Sheep Breeds
Provedor de dados: 117
Autores: de la Barra,Rodrigo; Uribe,Héctor; Latorre,Etel; San Primitivo,Fermín; Arranz,Juan.
Chilean sheep breeds have a significant founder effect since they descend from very few parents, in some cases population inbreeding has increased and in others there have been significant differentiation processes as compared to their original population. The objective of this study was to estimate the current status of genetic diversity in sheep herds, which comprise the main sheep breeds in Chile, using molecular methods. Animals from four breeding herds were sampled and analyzed. The breeds studied were Corriedale, Suffolk Down, Romney Marsh and Chilota, these are the predominant numerical pure breeds in Chile. From each breed population 40 animals were sampled. Genetic characterization was done using nine microsatellite molecular markers (SSR)...
Tipo: Journal article
Palavras-chave: Microsatellite; Diversity; Sheep; Chile.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000400016

Genetic variability of Passiflora spp. from commercial fields in the Federal District, Brazil
Provedor de dados: 65
Autores: Castro,Ana Paula Gomes de; Faleiro,Fábio Gelape; Carvalho,Daniel Diego Costa; Fonseca,Kenia Gracielle da; Vilela,Marina de Fátima; Junqueira,Nilton Tadeu Vilela; Cares,Juvenil Enrique.
This study aimed to characterize the genetic variability in commercial accessions of passion fruit from the Federal District, Brazil, by RAPD markers. Genetic analyses were done with leaf samples of 30 accessions. DNA samples were amplified by RAPD technique, and respective markers converted into a binary matrix, from which the genetic distances between the accessions were estimated. Clustering analyis based on genetic distances allowed to detect a wide range of genetic variabillity among the accessions of sour passion fruit, and to separate them from the two sweet passion fruit. The graphical positioning of 'BRS Ouro Vermelho' confirms its potential to improve the genetic variability of commercial varieties of sour passion fruit. Dispersal of genetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Passion fruit; Plant breeding; RAPD analysis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000600013