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| Registros recuperados: 69 | |
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| 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 |
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| Szpeiner,Alfonsina. |
| In 30 surveys across Cordoba city and surroundings (Argentina) I recorded, from November 2001 to May 2002, a total of 109 ornamental plants infested with aphid colonies. Surveys were conducted in the local botanical garden as well as homestead gardens and nurseries. Seventeen species of aphids were identified, 4 of which are new species in the area, from 47 ornamental plants. In a total of 59 plant/aphid associations, 38 new associations were found. I present the first record of aphids colonizing Cactaceae in Argentina. Most aphid colonies were medium and a high proportion (more than 40%) showed alate individuals. The most frequent aphid species, Aphis gossypii Glover and Aphis craccivora Koch were especially associated with the most frequent damages:... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aphids; Ornamental plants; Richness; Damages; Urban areas. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802008000100006 |
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| Vieira,Thiago B.; Tejerina-Garro,Francisco L.. |
| The aim of this study was to test whether the richness observed and the biomass per trophic group of fish assemblages vary depending on the order (1st and 2nd) of the streams located in three different basins of the Upper Paraná River Basin, Central Brazil. Samples were collected between April and September, 2009, in 27 streams of the Meia Ponte, Piracanjuba and Santa Maria River basins. A total of 4,879 specimens were collected distributed in 59 species and 19 families. The statistical analyses carried out indicate that the observed richness and biomass of omnivore fish were influenced by the interaction of two factors: stream order and basin. The 2nd order streams located in the Santa Maria basin presented significant differences in the observed richness... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trophic guilds; Omnivores; Richness; Biomass. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000200007 |
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| Chi Poot, Roger Antonio. |
| El presente trabajo se realizó en La Mojonera, Zacualtipán, Hidalgo, con la finalidad de determinar el efecto del manejo del bosque de Pinus patula sobre la riqueza de avifauna, durante la transición invierno-primavera 2004-2005. Se definieron tres condiciones del bosque de acuerdo a su historial de manejo. La Condición Uno (C1) pertenece a un bosque no intervenido por el proceso de corta (bosque natural); la Condición Dos (C2) estuvo constituida por rodales mayores a 12 años; y la Condición Tres (C3) por rodales menores de 12 años de edad. Para el muestreo de la vegetación, se establecieron 21 parcelas de 400 m2 (20X20m). En cada parcela se etiquetaron todos los individuos de especies arbóreas con DAP≥2 cm. Se identificaron, se registró su DAP, altura,... |
| Tipo: Tesis |
Palavras-chave: Manejo del bosque; Avifauna; Abundancia; Riqueza; Maestría; Forestal; Forest management; Avian communities; Abundance; Richness. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1549 |
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| 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 < 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 |
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| Cavarzere,Vagner; Moraes,Gabriel Parmezani; Silveira,Luís Fábio. |
| Boracéia Biological Station, near the city of Salesópolis, SP, is located in one of the most well-defined centers of endemism in eastern Brazil - the Serra do Mar Center. While the station was established only in 1954 under the auspices of the Museu de Zoologia da Universidade de São Paulo, the avifauna of this locality had already attracted the attention of ornithologists by the 1940s, when the first specimens were collected. Here we describe the ornithological history of the Boracéia Biological Station with a review of all the bird species recorded during more than 68 years, including recent transect and mist-netting records. Boracéia's records were found in museums, literature and unpublished reports that totaled 323 bird species when recent data is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Montane Atlantic forest; Transect counts; Mist-net; Richness; Ornithological collection. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492010001300001 |
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| Araújo,Túlio Raimundo de; Ribeiro,Ariana Cella; Doria,Carolina Rodrigues da Costa; Torrente-Vilara,Gislene. |
| Belmont Stream is the main tributary of the Madeira River in the area immediately downriver from the Santo Antonio Fall. Samplings were carried out using gill nets in the mouth of this stream between May 2005 and April 2006 and resulted in a list of 74 species. The analyses included values of composition, constancy of occurrence, species richness, abundance, Catch Per Unit of Effort and trophic structure about the ten most abundant species. Characiformes and Siluriformes were dominant order in the samples and Curimatidae (popularly known as "branquinhas") was the most abundant family, represented by Psectrogaster rutiloides (32.57% of the collected specimens), Potamorhina altamazonica (10.72%), and Potamorhina latior (7.79%). The most of species were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Richness; Dominance; CPUE; Migratory route; Amazon. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300001 |
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| Viana,Blandina Felipe; Kleinert,Astrid Matos Peixoto; Neves,Edinaldo Luz das. |
| Community of Euglossini (Hymenoptera, Apidae) from the coastal sand dunes of Abaeté, Salvador, Bahia, Brazil. The Euglossini community structure was analyzed by attracting males with the scents eucalyptol, eugenol, vanillin, benzyl benzoate and methyl salicylate, and by netting bees on flowers. The samplings took place three times a month along one year from 6:00 a.m. to 6:00 p.m. The scent baits attracted 670 individuals belonging to seven species of three genus. The predominant species were Euglossa cordata (Linnaeus, 1758) (76.6%) and Eulaema nigrita Lepeletier, 1841 (21.8%). Euglossini males visited the scents along the whole year, being more abundant in May and in August. The most efficient fragrance was eucalyptol, attracting 624 individuals of five... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Community structure; Euglossini; Richness; Scent baits; Sand dunes. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000400008 |
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| Rodrigues,Everton N. L.; Mendonça Jr.,Milton de S.; Rodrigues,Patrícia E. S.; Ott,Ricardo. |
| The Araneidae is a speciose family including web-spinning spiders that are very abundant in various terrestrial ecosystems. Several studies demonstrate that changes in vegetation surrounding rivers, streams and brooks affect the associated araneofauna. The aim of this research was to compare differences found in diversity (abundance and richness), composition and phenology of Araneidae spiders sampled in different habitats in four riparian forest catchments in southern Brazil. Samples were taken from riparian forests in four rivers of Rio Grande do Sul State: Piratini, Camaquã, Sinos and Maquiné rivers, each in a different hydrographic basin. Samples were taken twice seasonally on each basin during two years, sampling the araneofauna of the tree-shrub... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spiders; Habitats; Rio Grande do Sul; Abundance; Richness. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000100053 |
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| Gadelha,Sian de Souza; Penteado-Dias,Angelica Maria; Silva,Alexandre de Almeida e. |
| Braconidae is a highly diversified family of Hymenoptera and usually known by their role in biological control both in agricultural and natural ecosystems. Despite of that, little is known about its diversity in the Amazon region. The present work inventoried the braconid fauna of an Open Ombrophylous Forest with Palm Trees of the Parque Natural Municipal de Porto Velho, RO. Insects were collect from June/2008 to May/2009 using six Malaise traps in different parts of the reserve. A total of 377 wasps were captured, 17 subfamilies and 56 genera identified. Braconinae, Microgastrinae, Doryctinae and Rogadinae subfamilies were very abundant, and also the genera Aleiodes, Bracon, Capitonius, Compsobracon, Heterospilus, Hymenochaonia, Opius, Pedinotus, Rogas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ichneumonoidea; Parasitoid wasps; Richness; Western Amazon. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000400011 |
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| Vargas-Mena,Juan Carlos; Cordero-Schmidt,Eugenia; de Medeiros Bento,Diego; Rodriguez-Herrera,Bernal; Medellín,Rodrigo A; Venticinque,Eduardo M. |
| Caves are important roosts for bats in karstic areas and play a critical role in the protection of bat populations. In the state of Rio Grande do Norte, in northeastern Brazil, cave-dwelling bats are poorly studied. Moreover, the state contains more than 900 caves, mainly in the Caatinga biome, that may offer important roosts for local bat populations. Thus, to gain a first insight into the richness, diversity, and colony size of cave-bats in the state, we sampled 13 caves through active search and captures with mist nets. Sixteen species from five families were recorded, and the biggest colonies belonged to Pteronotus gymnonotus and Phyllostomus discolor. Furna Feia cave was the richest, with 10 species. Our results showed that Rio Grande do Norte is home... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Assemblage; Caatinga; Cave-dwelling bats; Colony size; Richness. |
| Ano: 2018 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832018000100016 |
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| Registros recuperados: 69 | |
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