Species composition and density estimates of the anurofauna of a site within the northernmost large Atlantic Forest remnant (Parque Estadual do Desengano) in the state of Rio de Janeiro, Brazil

Biota Neotropica

Carla Da Costa Siqueira¹  Davor Vrcibradic¹  Mauricio Almeida-gomes¹  Vanderlaine Amaral Menezes¹  Vitor Nelson Teixeira Borges-junior¹  Fábio Haruki Hatano¹  Jorge Antônio Lourenço Pontes¹  Pablo Goyannes-araújo¹  Diego Medeiros Guedes¹  Monique Van Sluys¹  Carlos Frederico Duarte Rocha¹ 

[1] ,Universidade do Estado do Rio de Janeiro Departamento de Ecologia Rio de Janeiro RJ ,Brazil

关键词: amphibian;    Atlantic Forest;    density estimate;    southeastern Brazil;    survey;    anfíbios;    Mata Atlântica;    densidade estimada;    sudeste do Brasil;    inventários;   

DOI  :  10.1590/S1676-06032011000400014

来源: SciELO

【 摘 要 】

We present data on species composition, relative abundance and estimated densities for leaf-litter anuran amphibians from an Atlantic Forest area within the Parque Estadual do Desengano, in the state of Rio de Janeiro, Brazil, based on results of a short-term survey carried out during the winter at altitudes of 1000-1500 m. Three sampling methods were used: plot sampling, visual encounter surveys (VES; performed during the day, at the twilight, and at night), and pitfall traps. We recorded 13 species, with the direct-developer Ischnocnema parva (Girard, 1853) being the most abundant. Most frogs (ca. 90% of all individuals) sampled by VES were captured during the crepuscular and nocturnal periods. The estimated density of the local leaf-litter frog assemblage based on plot sampling was 13.2 ind.100 m-2, which is one of the highest values currently reported for Atlantic Rainforest areas. This is the first study analyzing the anuran fauna of the Parque Estadual do Desengano and adds to the knowledge of the fauna of the northern region of the state of Rio de Janeiro, which is still poorly studied.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License