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title The usefulness of different methods for biodiversity surveys in the Amazonia/ Cerrado ecotone
authors Rocha, RG; Ferreira, E; Serafini, A; Costa, LP; Nogueira, AJA; Malvasio, A; Martins, ICM; Fonseca, C
title The usefulness of different methods for biodiversity surveys in the Amazonia/ Cerrado ecotone
nationality internacional
source Natureza On Line
language English
document type Journal Article
author keywords active search; Brazil; capture effectiveness; live traps; pipe refuges; pitfalls
abstract Small mammals and herpetofauna were surveyed in the Amazonia/Cerrado ecotone and the capture effectiveness in terms of capture rates and species richness of live traps (Sherman and Tomahawk) and pitfalls (30 L and 60 L) was compared. We also evaluated if these methods alone could accurately estimate local species richness, by using additional methods. Sixty-five small vertebrate species were captured, 29 amphibian, 18 lizard and 18 small mammal species. Larger pitfalls captured significantly more individuals than the smaller ones, but did not capture more species of any taxonomic group. When comparing live traps, sherman traps captured significantly more cricetids, while Tomahawk traps captured more didelphids and teiids. Pitfalls captured significantly more small mammal species than live traps. Pitfalls were the less selective method and reveal to be very useful even in short-term biodiversity surveys. Additional sampling methods substantially increased the number of recorded species, mostly herpetofauna. A combination of pitfalls and live traps is adequate for sampling small mammals in the ecotone but is be insufficient for herpetofauna. Additionally, we present the relative costs and effort associated with each method and discuss their merits and drawbacks
author address Department of Biology & CESAM, University of Aveiro
e-mail address elferreira@ua.pt
funding agency and grant number POPH-QREN, Portugal; SFRH/BD/24767/2005; SFRH/BD/23191/2005
funding text This project was partially supported by two PhD grants by Fundação Ciência e Tecnologia (Program POPH-QREN, Portugal) to RGR (ref: SFRH/BD/24767/2005) and EF (ref: SFRH/BD/23191/2005)
issn 1806-7409
publication date 10-01-2015
year published 2015
volume 13
issue 1
beginning page 32
ending page 44
link http://www.naturezaonline.com.br/natureza/conteudo/pdf/06_RochaRGetal_32-44.pdf