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| Registros recuperados: 133 | |
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| MOURA JÚNIOR,Edson Gomes de; PAIVA,Raíssa Maria Sampaio de; FERREIRA,Angélica Cândida; PACOPAHYBA,Lucília Dias; TAVARES,Aldaléa Sprada; FERREIRA,Fernando Alves; POTT,Arnildo. |
| Field collection and herbaria data did not allow to quantify the diversity of aquatic plants from Northern Brazil, so we could not detect biogeographic patterns. Therefore, our objectives were to identify and quantify the aquatic macrophytes of North Brazilian states, analyzing herbaria data plataforms (SpeciesLink and Flora do Brasil). The checklist was produced by bibliographic search (articles published between 1980 and 2000), herbaria collections of the platforms SpeciesLink and Flora do Brasil and field expeditions, where we utilized asystematic sampling. We also analyzed the floristic similarity of aquatic macrophytes among Northern Brazil, wetlands of distinct Brazilian regions and the Neotropics. We recorded 539 species, of which 48 are endemic to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Floristics; Life forms; Podostemaceae; Species richness. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000200111 |
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| LOURIDO,Gilcélia Melo; MOTTA,Catarina da Silva; GRAÇA,Márlon Breno; RAFAEL,José Albertino. |
| ABSTRACT Sphingidae attracted to light were systematically collected in an Amazonian forest canopy. Sampling occurred at a height of 34 m in an upland primary rainforest plateau in the Cueiras River basin, located within the Experimental Station of Tropical Silviculture, Manaus municipality, Amazonas, Brazil. The hawkmoths were collected using a vertical white sheet illuminated by a 250 W mixed mercury light and a 20 W black-light (BLB) fluorescent tube. Monthly collections were carried out from January to December 2004, during three nights of lunar transition from third quarter moon to new moon between 6 p.m. and 6 a.m. We sampled 1748 specimens, represented by 1485 males and 263 females, belonging to 52 species and 21 genera. Xylophanes comprised the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon rainforest; Flight activity; Forest canopy; Species composition; Species richness. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000200117 |
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| DEMARCHI,Layon Oreste; SCUDELLER,Veridiana Vizoni; MOURA,Livia Carvalho; DIAS-TERCEIRO,Randolpho Gonçalves; LOPES,Aline; WITTMANN,Florian Karl; PIEDADE,Maria Teresa Fernandez. |
| ABSTRACT The Amazonian white-sand vegetation presents a set of unique features, such as the dominance of a few species, high endemism and low species richness, which differentiate it from other Amazonian forests. Soil parameters have long been recognized as the main drivers of white-sand vegetation (WSV) characteristics. However, how they influence the composition, richness and structure of this vegetation type is still poorly understood. In this study we investigated the variation in floristic composition between patches and the soil-vegetation relations in three central Amazonian WSV patches. We tested whether slight differences in soil properties are linked with differences in floristic composition, species richness and forest structure in adjacent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Species richness; Oligotrophic ecosystems; Dominance; Sum of bases. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000100046 |
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| Leite,Amanda Barreto Xavier; Menezes,Aline Anjos de; Souto,Leandro de Sousa; Aptroot,André; Lücking,Robert; Santos,Viviane Monique dos; Cáceres,Marcela Eugenia da Silva. |
| The present study tested the hypothesis that species richness and composition of epiphytic microlichens can be used to support the phytosociological differentiation between Caatinga and Brejos de Altitude, as exemplified by the Muralha Reserve (Caatinga) and the Parque Estadual Mata do Pau Ferro (Brejo de Altitude), in the state of Paraíba, Brazil. A total of 755 lichen samples were collected, comprising 18 families, 42 genera and 111 species of epiphytic, corticolous microlichens. Overall species richness was higher in the Caatinga, with 67 species, compared to the Brejo, with 46 species. Species richness per sample was significantly higher in the Caatinga compared to the Brejo. Taxonomic composition also differed significantly between the two areas, with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Corticolous microlichens; Mata Pau-Ferro; Reserva Muralha; Species composition; Species richness. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400457 |
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| Gastauer,Markus; Meira Neto,João Augusto Alves. |
| Ecological theory predicts that, in mature ecosystems, species richness, the number of individuals and the biomass of individuals will remain in a relatively stable state of equilibrium. The aim of this study was to test that theory. In 2001 and 2010, we conducted censuses of all trees with a circumference at breast height > 10 cm in a one-hectare plot in a seasonal semideciduous old-growth forest in southeastern Brazil. We compared the two censuses in terms of species richness and diversity, computing growth, recruitment and mortality rates, as well as gains and losses of basal area. Between 2001 and 2010, species richness declined from 224 to 218 species and the basal area increased from 37.86 to 40.16 m² ha-1. Overall turnover (the mean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Community dynamics; Habitat loss; Immigration rate; Landscape fragmentation; Species richness. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200004 |
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| Lautert,Mayara; Temponi,Lívia Godinho; Viveros,Raquel S.; Salino,Alexandre. |
| This study surveyed lycophyte and fern species in four forest fragments in western Paraná, Brazil, and compared them to 15 other fragments with different plant formations from the Atlantic Forest biome in southern Brazil. In total, five lycophyte species (in two families and two genera) and 98 species and two varieties of ferns (in 16 families and 38 genera) were registered in the four fragments. The most represented families were Pteridaceae (23 spp.), Polypodiaceae (18 spp.), Aspleniaceae (13 spp.), and Thelypteridaceae (11 spp.). Asplenium (12 spp.), Thelypteris (10 spp.), and Blechnum (seven spp.) were among the most represented genera. The occurrence of Dicksonia sellowiana was noteworthy because it was associated with seasonal semideciduous forest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Araucaria forest; Pteridophytes; Semideciduous forest; Similarity; Species richness. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400499 |
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| Lima,Renato Augusto Ferreira de; Oliveira,Alexandre Adalardo de; Martini,Adriana Maria Zanforlin; Sampaio,Daniela; Souza,Vinícius Castro; Rodrigues,Ricardo Ribeiro. |
| We assessed the structure, diversity and distribution of tree species in a 10.24-ha permanent plot of high Restinga forest (HRF) in southeastern Brazil. We sampled 15,040 individuals belonging to 45 families, 87 genera and 116 species (density= 1,468 trees ha-1, and basal area= 28.0 m² ha-1). Mean richness was lower than other types of tropical forests and other HRFs that have been less intensively sampled, which is probably due to the younger age and hydromorphy of the soils in the study site. Tree density, basal area, species composition, and diversity all varied considerably depending on the size class considered. The studied plot had a density similar to other tropical forests but with a smaller basal area (fewer individuals > 60 cm in diameter),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Multi-stemmed trees; Species richness; Tree size classes. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300017 |
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| Polisel,Rodrigo Trassi; Ivanauskas,Natália Macedo; Assis,Marta Camargo de; Shepherd,George John; Yamamoto,Kikyo. |
| We analyzed the structure of the understory community in the Atlantic Forest sensu lato, for which phytosociological descriptions of the understory are lacking. We delineated 50 plots of 10 × 20 m each at four sites within an Araucaria forest (a subtype of Atlantic Forest), located in the municipalities of Bananal, Campos do Jordão, Itaberá and Barra do Chapéu, all of which are in the state of São Paulo, Brazil. To sample the resident species of the understory, we randomly selected five 1 × 1 m subplots within each plot, resulting in a total sampling area of 250 m² at each site. We identified differences among the locations, mostly due to proportional differences in growth forms, in terms of species richness and the importance values within the community.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herb-shrub layer; Phytosociology; Species richness; Mixed rain forest; Atlantic Forest. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000100009 |
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| Alves-da-Silva,Sandra Maria; Cabreira,Josemari da Cruz; Voos,José Guilherme; Lobo,Eduardo Alcayaga. |
| The objective of this study was to evaluate the taxonomic composition and richness of the genera Trachelomonas and Strombomonas (pigmented Euglenophyceae) in a subtropical urban lake (30º03'05"S; 51º10'34"W) within the Botanical Garden, in the city of Porto Alegre, located in the state of Rio Grande do Sul, Brazil, in order to contribute to the floristic knowledge of Euglenophyta in artificial urban lakes. From July 2007 to June 2008, we collected samples monthly from two sampling stations, using a 25-µm mesh plankton net. The samples were preserved in 4% formaldehyde. We evaluated the following environmental variables related to the water in the lake: ammonia content, silica content, organic matter content, dissolved oxygen concentration, temperature, pH,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Euglenophyta; Environmental gradient; Shallow lake; Species richness; Southern Brazil. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300010 |
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| Mousinho, Lucas Pessanha; Silva, Mariana Lessa Carneiro da; Arrieira, Rodrigo Leite; Schwind, Leilane Talita Fatoreto. |
| We aimed to perform the first survey of testate amoebae community composition in Lake Monte Alegre at São Paulo state, and contribute to mitigate the taxonomic impediment regarding the diversity of testate amoebae in Brazil. Samplings were performed in 20 sampling sites within the lake, in the limnetic and littoral regions in April 2015, using a 58 µm-meshplankton net. We identified 20 taxa of testate amoebae belonging to four families: Arcellidae (8 taxa), Centropyxidae (4 taxa), Difflugiidae (7 taxa) and Lesquereusiidae (2 taxa). The littoral region showed the highest number of taxa (n = 20), whereas in the limnetic region 11 taxa were registered. Therefore, our results evidenced the importance of testate amoebae in aquatic systems, and that further... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Biológicas/Taxonomia protozoa; Species richness; Zooplankton; Taxonomy. Ecologia. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36768 |
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| Zeppelini, Caio Graco; Jerônimo, Isabela; Rego, Karlla Morganna da Costa; Fracasso, Maria Paula de Aguiar; Lopez, Luiz Carlos Serramo. |
| Inventories are the basis of every work with biodiversity, with increased importance due to the current environmental crisis. Bats are one of the most diverse groups of mammals, with high ecologic versatility and are good bioindicators to monitor environmental impacts. We performed a two-stage survey at an Atlantic Forest reserve in the State of Paraíba, the first stage registering 187 individuals of 24 species and the second stage, 1073 individuals of 11 species; the second stage’s richness being a subset of the first as pointed by the Mann-Whitney test. The second stage was more efficient in accumulating individuals, while the first accumulated species more efficiently. The diversity estimation (Chao 1) pointed that the survey was efficient in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.01.00.00-0; 2.04.00.00-4; 2.04.05.00-6 Chiroptera; Inventory; Diversity estimation; Species richness; Natalus stramineus taxonomia dos grupos recentes. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31248 |
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| DA SILVA,PEDRO G.; VAZ-DE-MELLO,FERNANDO Z.; DI MARE,ROCCO A.. |
| Scarabaeinae specimens were collected with the use of pitfall traps baited with human excrement, rotten meat and rotting banana, between May 2009 and April 2010, in three forest fragments in Santa Maria, Rio Grande do Sul, Brazil: ‘Morro do Elefante’ (MOEL), ‘Morro do Cerrito’ (MOCE) and ‘Campus da Universidade Federal de Santa Maria’ (UFSM). A total of 19,699 individuals belonging to 33 species were collected. Canthidium aff. trinodosum Boheman, 1858, Canthon latipes Blanchard, 1845, Dichotomius assifer (Eschscholtz 1822), Eurysternus caribaeus (Herbst 1789), Canthidium sp. and Canthon lividus Blanchard, 1845, were the most abundant species. MOEL showed the greatest richness, MOCE the greatest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic forest; Dung beetles; Southern Brazil; Species richness; Temporal distribution. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200679 |
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| 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 |
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| Registros recuperados: 133 | |
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