Diversidade e uso do habitat de comunidades de anfíbios anuros em Lençóis Paulista, Estado de São Paulo
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Data
2010-02-22
Autores
Maffei, Fábio [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
O Estado de São Paulo possui seus dois biomas, Cerrado e Mata Atlântica, ameaçados no mais alto grau em consequência da devastação que ocorreu em seu território nas últimas décadas. Mesmo com a maior parte da vegetação nativa toda fragmentada e perturbada, ainda possui uma rica biodiversidade com altos índices de endemismo. A anurofauna paulista é uma das mais ricas e bem estudadas do país, porém ainda existem lacunas de conhecimento em algumas regiões do Estado, principalmente no interior. O presente estudo foi realizado em uma área de Cerrado e Floresta Estacional Semidecidual no município de Lençóis Paulista, região centro-oeste do Estado de São Paulo, com os objetivos de caracterizar a fauna de anfíbios anuros do local, verificar o uso do habitat pelas espécies, analisar a distribuição espacial e temporal das espécies e determinar a diversidade da comunidade de anuros presente na área. As visitas foram realizadas mensalmente entre novembro de 2007 e dezembro de 2009 com amostragens em 24 pontos de coleta de dados. Os métodos utilizados para o registro das espécies foram levantamento por encontro visual, procura auditiva e armadilhas de interceptação e queda. Foram registradas 40 espécies de anuros de sete famílias: Bufonidae (2 spp.), Cycloramphidae (2 spp.), Centrolenidae (uma espécie), Hylidae (21 spp.), Leiuperidae (4 spp.), Leptodactylidae (8 spp.) e Microhylidae (2 spp.). A atividade dos anuros esteve associada ao período quente e chuvoso (setembro a março), sendo a chuva o principal componente na variação sazonal dos anuros. Os ambientes de área aberta foram utilizados por 29 espécies e apenas quatro tiveram a mata como ambiente. A borda de área aberta foi utilizada por 14 espécies e oito foram registradas em borda de mata. A diversidade da comunidade foi de 1,76 (H’) e a equitabilidade de 0,69 (J). A anurofauna se mostrou diferente em...
The São Paulo state of has its two biomes, Cerrado and Atlantic Forest, both highly threatened as a consequence of the devastation that occurred in recent decades. Even with most of the native vegetation fragmented and disturbed, this region still has a rich biodiversity with high levels of endemism. The anuran fauna of the São Paulo state is one of the richest and most studied of Brazil, but there are still important knowledge gaps in some regions, especially in the interior. This study was conducted in an area of Cerrado and Semideciduous Seasonal Forest in the municipality of Lençóis Paulista, Center-West of the São Paulo state. The objectives were to characterize the anuran fauna of the site, investigate the habitat use of these species, analyze their spatial and temporal distribution and determine the diversity of the anuran community in the area. Field visits were carried out monthly from November 2007 to December 2009, sampling 24 points of data collection. Visual encounter surveys, audio strip transects and pitfall traps were used to record the species. We recorded 40 species of anurans from seven families: Bufonidae (2 spp.), Cycloramphidae (2 spp.), Centrolenidae (one species), Hylidae (21 spp.), Leiuperidae (4 spp.), Leptodactylidae (8 spp.) and Microhylidae (2 spp.). Anurans were associated with the warm and rainy season (September to March), and rain was the main component underlying the seasonal variation in anurans. Open area environments were used by 29 species, whilst only four species used the forest. The edges of open areas were used by 14 species, and eight species were recorded in forest edges. The diversity of the community was 1.76 (H') and equitability was 0.69 (J). The anuran fauna had a different composition in areas under the influence of the vegetal formation, both in Cerrado and Seasonal Semideciduous Forest. Some important records were: Vitreorana ... (Complete abstract click electronic access below)
The São Paulo state of has its two biomes, Cerrado and Atlantic Forest, both highly threatened as a consequence of the devastation that occurred in recent decades. Even with most of the native vegetation fragmented and disturbed, this region still has a rich biodiversity with high levels of endemism. The anuran fauna of the São Paulo state is one of the richest and most studied of Brazil, but there are still important knowledge gaps in some regions, especially in the interior. This study was conducted in an area of Cerrado and Semideciduous Seasonal Forest in the municipality of Lençóis Paulista, Center-West of the São Paulo state. The objectives were to characterize the anuran fauna of the site, investigate the habitat use of these species, analyze their spatial and temporal distribution and determine the diversity of the anuran community in the area. Field visits were carried out monthly from November 2007 to December 2009, sampling 24 points of data collection. Visual encounter surveys, audio strip transects and pitfall traps were used to record the species. We recorded 40 species of anurans from seven families: Bufonidae (2 spp.), Cycloramphidae (2 spp.), Centrolenidae (one species), Hylidae (21 spp.), Leiuperidae (4 spp.), Leptodactylidae (8 spp.) and Microhylidae (2 spp.). Anurans were associated with the warm and rainy season (September to March), and rain was the main component underlying the seasonal variation in anurans. Open area environments were used by 29 species, whilst only four species used the forest. The edges of open areas were used by 14 species, and eight species were recorded in forest edges. The diversity of the community was 1.76 (H') and equitability was 0.69 (J). The anuran fauna had a different composition in areas under the influence of the vegetal formation, both in Cerrado and Seasonal Semideciduous Forest. Some important records were: Vitreorana ... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Anfíbio - Habitat, Anurofauna - Lençóis Paulista (SP)
Como citar
MAFFEI, Fábio. Diversidade e uso do habitat de comunidades de anfíbios anuros em Lençóis Paulista, Estado de São Paulo. 2010. 74 f. Dissertação (mestrado) - Universidade Estadual Paulista, Instituto de Biociências de Botucatu, 2010.