Biologa em formaçao

BERNARDE & MACEDO

454

Impacto do desmatamento e formação de pastagens sobre a anurofauna de serapilheira em Rondônia
Paulo Sérgio Bernarde1 & Lílian Cristina Macedo2
1. Laboratório de Herpetologia, Centro Multidisciplinar, Campus Floresta, Universidade Federal do Acre – UFAC, 69980-000 Cruzeiro do Sul, AC. ([e-mail])
2. Laboratório Multidisciplinar de Biologia, Faculdade de Educação e Meio Ambiente - FAEMA, Av. Machadinho 4349, Setor 6, 78932125 Ariquemes, RO. ([e-mail])

ABSTRACT. The impact of deforestation and pastures on the leaf-litter frog community in Rondônia, Brazil. Abundance and diversity of leaf-litter frog species were studied in forest and pasture in Rondonia, Brazil. Also, the efficiency of use of pitfall traps was examined. Pitfall traps were established in three treatments: forest interior far (> 100 m) from water; forest interior near (< 100 m) water; pasture, far from water. Species richness was typical of the Amazon region, with a total of 1,324 individuals of 27 species in nine families: Aromobatidae (1 species), Brachycephalidae (2), Bufonidae (4), Cycloramphidae (1), Dendrobatidae (1), Hylidae (5), Leiuperidae
(1), Leptodactylidae (7) e Microhylidae (5). Pitfall traps captured 57% of the species known for this location, capturing mainly terrestrial and fossorial species. The greatest richness and diversity of captures were during the rainy season in the forested sites. Forest converted to pasture affects several features of the habitat that reduce habitat quality with respect to these amphibians, including fewer places for reproduction, reduced food supply, loss of leaf-litter and soil compaction all with their influence on microclimate, as well as the arrival of other species more common in open areas.
KEYWORDS. Amphibia, Anura, leaf litter, southwestern Amazonia, Rondônia.
RESUMO. A riqueza e a diversidade de anfíbios anuros de serapilheira em áreas de floresta e de pastagem foram