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<p>Aquatic ecosystems worldwide are increasingly threatened by eutrophication and anthropogenic disturbances, resulting in biodiversity loss and functional degradation. East Taihu Lake, a typical shallow lake in China, has experienced severe ecological stress due to nutrient enrichment and habitat alteration. We investigated the spatiotemporal patterns of macroinvertebrate communities to assess the degree of disturbance to aquatic ecosystems. Seasonal sampling was conducted across five functional areas from 2020 to 2021, including measurements of physicochemical water parameters, aquatic vegetation, and macroinvertebrate assemblages. A total of 28 species were identified, with <i>Bellamya purificata</i>, <i>Limnodrilus</i>, and <i>Tubifex</i> as dominant taxa. Statistical analyses revealed that water depth and aquatic vegetation coverage were the key drivers shaping community composition and diversity. Mollusks dominated in shallow, vegetated areas with high transparency, while Oligochaetes and Chlamydia were more abundant in deeper waters, reflecting tolerance to low-oxygen and eutrophic conditions. This study highlights the ecological benefits of aquatic vegetation in enhancing habitat complexity, supporting macroinvertebrate diversity, and improving water quality. These findings provide valuable scientific support for adaptive management of shallow lakes, emphasizing the restoration of aquatic plants and regulation of hydrological conditions as effective strategies to promote benthic biodiversity and longterm ecosystem resilience.</p>

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Insights from characteristics of macroinvertebrate community in response to environmental factors following wetland functional areas restoration in East Taihu Lake, China

  • 期刊论文

  • 发表日期：

    2025年6月21日

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  • Changming Yang,
  • Shuhan Ding,
  • Yangdan Niu,
  • Jianghua Li

摘要

Aquatic ecosystems worldwide are increasingly threatened by eutrophication and anthropogenic disturbances, resulting in biodiversity loss and functional degradation. East Taihu Lake, a typical shallow lake in China, has experienced severe ecological stress due to nutrient enrichment and habitat alteration. We investigated the spatiotemporal patterns of macroinvertebrate communities to assess the degree of disturbance to aquatic ecosystems. Seasonal sampling was conducted across five functional areas from 2020 to 2021, including measurements of physicochemical water parameters, aquatic vegetation, and macroinvertebrate assemblages. A total of 28 species were identified, with Bellamya purificata, Limnodrilus, and Tubifex as dominant taxa. Statistical analyses revealed that water depth and aquatic vegetation coverage were the key drivers shaping community composition and diversity. Mollusks dominated in shallow, vegetated areas with high transparency, while Oligochaetes and Chlamydia were more abundant in deeper waters, reflecting tolerance to low-oxygen and eutrophic conditions. This study highlights the ecological benefits of aquatic vegetation in enhancing habitat complexity, supporting macroinvertebrate diversity, and improving water quality. These findings provide valuable scientific support for adaptive management of shallow lakes, emphasizing the restoration of aquatic plants and regulation of hydrological conditions as effective strategies to promote benthic biodiversity and longterm ecosystem resilience.