Anuran diversity (Amphibia) in recovered areas of mining activity in Cerrado and Eucalyptus urophylla planting in central Brazil

Nomura et al. (2012) – Bioscience Journal

Amphibians diversity in the Cerrado is threatened mainly by the increase in human activities. Current legislation requires potentially impactful ventures to implement environmental programs that include the recovery of degraded areas and the study of ecological mechanisms associated with the recolonization of altered areas. The objectives of this study were: to evaluate possible differences in species composition in anuran assemblages between areas of modified topography (ATM) and areas of unmodified topography (ATNM); and to compare the species richness of anurans between ATM and ATNM. Despite the greater number of species recorded in ATM (28 species) compared to ATNM (22 species), there was no difference in richness when comparing rarefaction curves or estimated richness (jackknife1). However, the two assemblies differed in relative abundance curves, especially in terms of the pattern of the most abundant species. Locally, the co-occurrence analysis demonstrated that species in the ATM co-occur less than expected at random, which indicates the sharing of environments for reproduction mediated by competitive interactions. The presence of artificial water bodies with high structural heterogeneity, associated with forest fragments in good condition are factors that contribute to the maintenance of a high diversity of amphibians in the area.