Upstream cascade reservoirs drive temporal beta diversity increases through species loss in a dammed river.

ABSTRACT: Changes in the biodiversity of aquatic environments over time and space due to human activities are a topic of theoretical and conservational interest in ecology. Thus, variation in taxonomic beta diversity of the planktonic ciliates community was investigated along a temporal and spatial gradient in two subsystems of a Neotropical floodplain, one impacted by dams (Paraná) and the other free of them along its course (Ivinhema). For the spatial analysis, the Paraná subsystem did not show a significant decrease in beta diversity, presenting a pattern like that observed for the Ivinhema subsystem. Therefore, biotic homogenization was not observed for the ciliate's community downstream of the dams. It was noted that there was a fluctuation in the relevance of the components of beta diversity,

SUBMITTER: Guimaraes Duran CL 

PROVIDER: S-EPMC10799717 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature