Moreover, biodiversity studies will be of far more value if their results are comparable between sites, so that broader conclusions can be made - an important point for achieving a better understanding of the ecosystems and for the development of environmental policies. In biodiversity studies the choice of sampling methods is important in determining how well one is able to effectively sample the target fauna, and therefore how successfully the whole study is accomplished. Key words: Amphibians faunal survey Neotropical forest reptiles sampling method small mammals. IIDepartamento de Biologia e Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso. IMuseu Paraense Emílio Goeldi & Programa de Pós-graduação em Zoologia, Universidade Federal do Pará-Museu Paraense Emílio Goeldi. Influence of pitfall trap size and design on herpetofauna and small mammal studies in a Neotropical ForestĬorrespondig author. For surveys aiming only the herpetofauna the use of smaller (35 L) traps is acceptable, taking into consideration the cost-benefits obtained by the smaller traps, in comparison to the larger ones.Īmphibians faunal survey Neotropical forest reptiles sampling method small mammals Therefore, the use of 100 L pitfall traps is recommended to sample the terrestrial vertebrate fauna, in multidisciplinary studies. Results are very similar for the herpetofauna, regardless of the pitfall trap design or size used, while for small mammals values of species richness were higher for 100 L pitfall traps, as compared to the smaller traps. To address this problem, we conducted the first standardized comparison of patterns of species richness, rank-abundance, and community structure of leaf litter amphibians, lizards and small mammals for two trap designs (I and Y format) and three bucket sizes (35, 62, and 100 L) in a Neotropical forest. However, there are still many speculations concerning the effectiveness of different designs of pitfall traps and the most adequate size of each trap. One of the most commonly used sampling techniques to capture leaf litter amphibians, lizards and small mammals is a set of pitfall traps with drift fences.
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