Distance to large rivers affects fish diversity patterns in highly dynamic streams of Central Amazonia.

ABSTRACT: Longitudinal-zonation hypotheses generally predict gradual changes in fish composition from upstream to downstream due to changes in habitat conditions, but largely disregard downstream effects on upstream segments. Floodplains of large rivers represent areas of high connectivity during flood periods and can act as stable refuges in dry seasons, which may attenuate deterministic constraints imposed by local conditions on fish assemblages in surrounding habitats. In this study, we investigated the effects of proximity to large rivers on taxonomic- and functional-diversity patterns of stream-fish assemblages in an extensive region of Central Amazonia. We sampled 31 headwater-stream reaches in nine catchments in the Purus and Madeira Rivers interfluve between December 2014 and March 2015. Nin

SUBMITTER: Stegmann LF 

PROVIDER: S-EPMC6797196 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature