Dynamics of the terrestrial amphibian assemblage in a flooded riparian forest fragment in a Neotropical region in the south of Brazil

Abstract

The aim of this study was to analyze the richness, abundance and composition of the terrestrial amphibian assemblage in a flooded riparian forest fragment in a Neotropical region in the south of Brazil over a year (2002-2003). A total of 1,265 terrestrial amphibians were captured, representing 12 species and six families. Leiuperidae represented 41.7 and 56.3% of the total number of species and individuals captured, respectively. The amphibian richness and abundance were higher in the Spring-Summer than in the Autumn-Winter period, and these attributes did not change after the flood events. However, the floods homogeneously distributed the amphibian species over the fragment. Our study documented the terrestrial amphibian's use in a riparian forest fragment associated to a floodplain system in the south of Brazil, showing the importance of these habitats as possible dispersal corridors among nearby wetlands.

Estrutura e organização espacial de duas comunidades de anuros do bioma Pampa

“…Os estudos envolvendo ecologia de comunidades de anuros existentes no Bioma Pampa, historicamente, estão concentrados na região da Planície Costeira (e.g., colomBo et al, 2008;maltcHik et al, 2008;moreira et al, 2008;macHado & maltcHik, 2009;macHado et al, 2012;oliveira et al, 2013), enquanto as fisionomias campestres interioranas permaneceram pouco exploradas exceto pelos estudos de santos et al (2008) na Depressão Central, BotH et al (2011) na Serra do Sudeste e di- Bernardo et al (2002) na região da Campanha. Apesar do crescente número de estudos, o conhecimento acerca dos padrões de composição, diversidade e distribuição espacial dos anuros desta região ainda são escassos.…”

O Código Florestal Tem Base Científica?

“…A maior parte dos estudos foi feita na Floresta Atlântica Uezu et al 2005;Marinho-Filho & Verissimo 2007;Keuroghlian & Eaton 2008;Maltchik et al 2008;Martensen et al 2008), mas existem dados também para Floresta Amazônica (Lima & Gascon 1999;Michalski et al 2006;Lees & Peres 2008), Caatinga (Moura & Schlindwein 2009), Pantanal (Quigley & Crawshaw 1992) e Cerrado (Tubelis et al 2004). Em relação aos grupos taxonômicos, há dados para árvores , anfíbios (Lima e Gascon 1999;Maltchik et al 2008), aves (Tubelis et al 2004;Uezu et al 2005;Martensen et al 2008), grandes mamíferos ( Não há dúvidas que independentemente do bioma ou do grupo taxonômico considerado, toda paisagem deveria manter corredores ripários, dado os seus benefícios para a conservação das espécies.…”

Amphibian Occupancy in Flood‐created and Existing Wetlands of the Lower Missouri River Alluvial Valley

“…Few studies have demonstrated that adult amphibians are opportunistic in regard to wetland selection after flood events. Maltchik et al (2008) found that amphibians in Brazil were homogeneously distributed throughout the floodplain after flood events, which implies that there was no apparent selection between existing and flood-created wetlands within the floodplain.…”

“…Few studies have demonstrated that adult amphibians are opportunistic in regard to wetland selection after flood events. Maltchik et al () found that amphibians in Brazil were homogeneously distributed throughout the floodplain after flood events, which implies that there was no apparent selection between existing and flood‐created wetlands within the floodplain. Conversely, other studies observed that wetland characteristics, such as size (Petranka et al , ), connectivity (Cunningham et al , ) and adjacent terrestrial vegetative attributes (Baldwin et al , ), influenced amphibian distribution and richness.…”