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• W4200557657 endingPage "152566" @default.
• W4200557657 startingPage "152566" @default.
• W4200557657 abstract "Knowledge of benthic diatom traits can help understand ecosystem function and guide biodiversity conservation. This is particularly important in rivers on which there are small run-of-river dams, which currently receive less attention. These dams generate power by drawing water from upstream and discharging it downstream after a large drop in penstock. We examine 15 functional diatom traits in habitats upstream, surrounding, and downstream of 23 small run-of-river dams in Xiangxi River, China. We compare the effects of these small dams on benthic diatom species traits, and taxonomic and functional diversity, from 90 sites. Dams change local environmental (e.g., channel width, flow velocity, depth) and physicochemical (e.g., dissolved oxygen, water temperature) variables, and a shift in diatom life forms and guilds is apparent, from taxa with strong attachment and low profile in high velocity waters (i.e., H1, H2 and H4) to those with weak attachment or that are planktonic below dams and outlets (i.e., H3 and H5), and towards high profile taxa below dams. Significant differences in biodiversity, particularly in functional richness, redundancy, and evenness, are apparent. Species and functional diversity indices are influenced by physical and chemical environmental factors (especially flow velocity and water depth). We found that diatom functional traits reflect longitudinal changes in flow and ecological condition, and suggest that monitoring such traits could be useful in adjusting flows to minimize ecosystem impacts. To maintain ecological flow and reasonable water depth within rivers we advocate for improved connectivity, carrying capacity and resilience of water ecosystems via a long-term, trait-based understanding of the impacts of small run-of-river dams." @default.
• W4200557657 created "2021-12-31" @default.
• W4200557657 creator A5012350575 @default.
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• W4200557657 creator A5035834394 @default.
• W4200557657 creator A5071918408 @default.
• W4200557657 creator A5086906337 @default.
• W4200557657 date "2022-03-01" @default.
• W4200557657 modified "2023-10-06" @default.
• W4200557657 title "Small run-of-river hydropower dams and associated water regulation filter benthic diatom traits and affect functional diversity" @default.
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• W4200557657 doi "https://doi.org/10.1016/j.scitotenv.2021.152566" @default.
• W4200557657 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34952048" @default.
• W4200557657 hasPublicationYear "2022" @default.

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