The influence of riverine barriers, climate, and topography on the biogeographic regionalization of Amazonian anurans.

ABSTRACT: We evaluated five non-mutually exclusive hypotheses driving the biogeographic regions of anuran species in the Amazonia. We overlaid extent-of-occurrence maps for anurans 50 × 50 km cells to generate a presence-absence matrix. This matrix was subjected to a cluster analysis to identify the pattern and number of biogeographic regions for the dataset. Then, we used multinomial logistic regression models and deviance partitioning to explore the relative importance of contemporary and historical climate variables, topographic complexity, riverine barriers and vegetation structure in explaining the biogeographic regions identified. We found seven biogeographic regions for anurans in the Amazonia. The major rivers in the Amazonia made the largest contribution to explaining the variability in anu

SUBMITTER: Godinho MBC 

PROVIDER: S-EPMC5821848 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature