[Aquatic Community Structure and Biological Assessment of Water Quality in Urban Lakes of the Yangtze River Downstream： A Case Study of Three Lakes in Wuhu City].

• DOI: 10.13227/j.hjkx.202401186
• Publication Date: 2025-02-08
• Authors: Bo Xu; Fangjie Ge; Yao Guo; Disong Chen; Runze Chen; Hu Zou; Bian-hua Zhou; Liping Zhang; Zhenbin Wu; Qiaohong Zhou
• Keywords: Yangtze river

The Yangtze River constitutes a crucial aquatic system in China, and lakes downstream play significant role the stability of ecosystem functions. However, human activities have caused to suffer from eutrophication. Moreover, it is important investigate ecosystems Qingting Lake, Fengming Yin Lake Wuhu City, Anhui Province, for tracing controlling We focused on differences communities their relationships with environmental variables. A total 61 species zooplankton, 69 phytoplankton, 15 benthos were detected three lakes. Dragonfly had highest number zooplankton phytoplankton species； was 17.65% 22.06%, significantly higher than those Silver respectively （P<0.05）. Inconsistently, benthic biomass 97.46% 97.64% [（149.39±10.97） g·m-2] compared （P<0.01）. high dominance included Pseudoanabaena sp., Merismopedia Polyarthra vulgaris, Moina micrura, Strobilidium Limnodrilus sp. Tanypus Water nitrogen phosphorus, sediment water depth, salinity, pH, oxidation-reduction potential, dissolved oxygen factors leading dominant among lakes, influence 70.70%, 76.69%, 70.32%, （redundancy analysis）. Finally, results indicated that both characterized as eutrophic, but mesotrophic when we calculated parameters, integrated trophic state index, biological index together.