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Landscape use and Habitat Configuration Effects on Amphibian Diversity in Southern Brazil Wetlands
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Landscape use and Habitat Configuration Effects on Amphibian Diversity in Southern Brazil Wetlands
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Journal Article
Landscape use and Habitat Configuration Effects on Amphibian Diversity in Southern Brazil Wetlands
2024
Overview
In this study, we evaluated the effect of changes in natural wetlands on the amphibian diversity at differing spatial and temporal scales. We sampled 10 wetland sites along floodplains in southern Brazil. We classified the sites as reference or altered ponds according to the preservation degree and presence of human impact. The amphibian monitoring was conducted through calling surveys performed between 2015/2016 using an automated recording system that identified the calling male species. We identified 23 species, mainly distributed in the families Hylidae (43%) and Leptodactylidae (34.8%). The altered ponds had lower diversity and higher species dominance. Even ponds with the greatest landscape change revealed a high degree of resilience concerning the amphibian species composition. However, only
Boana pulchella
was dominant in altered ponds and
B. pulchella
and
Pseudopaludicola falcipes
were dominant in reference ponds. A reduction of amphibian richness was driven by the expansion of the urban area and loss of flooding areas. From 1999 to 2016 all sampled sites had their wetland area reduced as the surrounding urban area increased, contributing to the combined loss of habitat and reproductive sites of anurans in subtropical wetlands.
