Species composition and similarities among anuran assemblages of forest sites in southeastern Brazil

Scientia Agricola

Jaime Bertoluci²  Ricardo Augusto Brassaloti¹  José Wagner Ribeiro Júnior¹  Vívian Maria De Faria Nasser Vilela¹  Henrique Oliveira Sawakuchi¹ 

[1] ,USP ESALQ Depto. de Ciências BiológicasPiracicaba SP ,Brasil

关键词: anurans;    species richness;    species composition;    conservation;    anfíbios;    riqueza de espécies;    ambientes de floresta;    biodiversidade;    conservação;   

DOI  :  10.1590/S0103-90162007000400007

来源: SciELO

【 摘 要 】

Neotropical forests show high anuran species richness, but some Brazilian forest formations, like cerradão, semideciduous forests and restingas, remain poorly known. The composition of anuran species were determined for four forest sites belonging to different biomes in southeastern Brazil, based on two complementary techniques (visual encounter survey and survey on breeding sites), both applied simultaneously. A total of 60 anuran species belonging to eight families was recorded. Species richness and levels of endemism were higher in the Atlantic rainforest site. Sites located in the Cerrado domain were more alike than those located in the Atlantic Forest Domain. Similarity in anuran species composition was negatively correlated to the geographical distance among sites, which explains part of similarities in species composition. Factors affecting these occurrence patterns are discussed. One species (if its identity is confirmed) is considered Data Deficient by IUCN (The World Conservation Union), though it is not included in the Brazilian list of threatened amphibians. The presence of certain species with special habitats and microclimate requirements (bioindicators) suggests well-preserved ecosystems.

【 授权许可】

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