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BIBTEX RIS

A survey of the leaf-litter frog assembly from an Atlantic forest area (Reserva Ecológica de Guapiaçu) in Rio de Janeiro State, Brazil, with an estimate of frog densities

2007; Firenze University Press; Volume: 20; Issue: 1 Linguagem: Inglês

ISSN

1970-9528

Autores

Carla C. Siqueira, Carlos Frederico Duarte Rocha, C. G. A. Fernandes, Davor Vrcibradic, Eduardo Cárdenas Nogueira Rubião, Mauricio Almeida‐Gomes, Monique Van Sluys, Mara Cíntia Kiefer, Patrícia Almeida-Santos, Pablo Goyannes-Araújo, Paulo César Falanghe Carneiro, R. V. Marra, Vitor Nelson Teixeira Borges-Júnior,

Tópico(s)

Wildlife-Road Interactions and Conservation

Resumo

We studied the leaf-litter frog community of the Reserva Ecologica de Guapiacu (REGUA), in Rio de Janeiro State, southeastern Brazil, and present data on species composition and frog densities. We combined three sampling methods: large plots, transects and pit-fall traps. We recorded 12 frog species associated with forest leaf-litter: Adenomera marmorata Steindachmer 1867, Leptodactylus ocellatus (Linnaeus 1758), and Physalaemus signifer (Girard 1835) (Leptodactylidae); Eleutherodactylus binotatus (Spix 1824), E. guentheri (Steindachmer 1864), E. octavioi Bokermann 1965, and Euparkerella cochranae Izechsohn 1988 (Brachycephalidae); Proceratophrys boiei (Wied-Neuwied 1821) (Cycloramphidae); Chaunus ornatus Spix 1824 and Chaunus ictericus Spix 1824 (Bufonidae); Chiasmocleis carvalhoi Cruz et al. 1997 (Microhylidae); and Scinax aff. x-signatus (Spix 1824) (Hylidae). The area had a relatively high overall density (8.43 ind/100 m2) of leaf-litter frogs compared to other Atlantic forest areas. Eleutherodactylus Dumeril & Bibron 1841 was the most speciose genus with three species and Eleutherodactylus guentheri was the most abundant species (mean density of 2.71 frogs/100 m2). Despite their relatively lower abundance in the area, Chaunus ictericus, C. ornatus and Proceratophrys boiei comprised most of the frog biomass in the leaf-litter community, due to their larger body sizes. Our data indicate that the overall leaf-litter frog density at the study site is similar to other species-rich areas, not only in South America, but also in other tropical forests in the world.

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