Cascade dams altered taxonomic and functional composition of bacterioplankton community at the regional scale.

ABSTRACT: Dams are increasingly disrupting natural river systems, yet studies investigating their impact on microbial communities at regional scale are limited. Given the indispensable role of bacterioplankton in aquatic ecosystems, 16S rRNA gene sequencing was performed to explore how these communities respond to dam-influenced environmental changes at the regional scale in the Shaying River Basin. Our findings revealed that cascade dams create distinct environments, shaping bacterioplankton communities near the dams differently from those in natural rivers. In the upstream of the cascade dams, water quality was superior, while bacterioplankton community structure was simple with weak community interactions. In the midstream, nutrient and heavy metal content were increased, making bacterioplankton

SUBMITTER: Jiang X 

PROVIDER: S-EPMC10634544 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature