Environmental heterogeneity determines the ecological processes that govern bacterial metacommunity assembly in a floodplain river system.

ABSTRACT: How diversity is structured has been a central goal of microbial ecology. In freshwater ecosystems, selection has been found to be the main driver shaping bacterial communities. However, its relative importance compared with other processes (dispersal, drift, diversification) may depend on spatial heterogeneity and the dispersal rates within a metacommunity. Still, a decrease in the role of selection is expected with increasing dispersal homogenization. Here, we investigate the main ecological processes modulating bacterial assembly in contrasting scenarios of environmental heterogeneity. We carried out a spatiotemporal survey in the floodplain system of the Paraná River. The bacterioplankton metacommunity was studied using both statistical inferences based on phylogenetic and taxa turnove

SUBMITTER: Huber P 

PROVIDER: S-EPMC7784992 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature