Bacterial community structure upstream and downstream of cascade dams along the Lancang River in southwestern China.

ABSTRACT: Extensive construction of dams by humans has caused alterations in flow regimes and concomitant alterations in river ecosystems. Even so, bacterioplankton diversity in large rivers influenced by cascade dams has been largely ignored. In this study, bacterial community diversity and profiles of seven cascade dams along the720 km of the Lancang River were studied using Illumina sequencing of the V3-V4 hypervariable region of the 16S rRNA gene. Spatiotemporal variations of bacterial communities in sediment and water of the Gongguoqiao hydroelectric dam and factors affecting these variations were also examined. Microbial diversity and richness in surface water increased slightly from upstream toward downstream along the river. A significant positive correlation between spatial distance and dis

SUBMITTER: Luo X 

PROVIDER: S-EPMC7603470 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature