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This is a Quantitative Study study.

September 16, 2025MicroorganismsOpen Access

Dams Determine the Composition and Activity of Microbial Communities in Semiclosed Marine Basins of the White and Barents Seas, Russia

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Microbial community composition shifts in semiclosed marine basins due to dam-induced hypoxia, indicating ecological implications.

Microbial communities in these marine basins developed distinct features, with increased sulfate reduction and methanogenesis.
High concentrations of sulfide and methane in sediments were recorded, affecting the types of microorganisms present in these environments.
The study focused on sediments at Kislaya Guba and Kanda Bay, highlighting the impact of dam-regulated water exchange on ecosystem health.
Compositions may shift toward anoxic microbial communities if water exchange remains unregulated, suggesting potential ecological risks.

Саввичев et al. (2025) studied this question.

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