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<p>The Yancheng National Nature Reserve for Rare Birds in Jiangsu Province is an important coastal tidal wetland reserve. However, the invasive species <i>Spartina alterniflora</i> has caused severe ecological damage to its ecosystem. Therefore, preventing and controlling <i>S. alterniflora</i> and evaluating biodiversity restoration are of crucial ecological significance. In this study, a combination of mowing, flooding, and plowing was adopted in the reserve to inhibit <i>S. alterniflora</i>. Subsequently, eDNA technology was used to sample and analyze fish and zooplankton communities, and the recovery of community structure was quantified using the Shannon index, Simpson index, and Pielou index. Biodiversity indices revealed different recovery patterns: the species comeback of zooplankton and fish communities in plowed areas was the least obvious, while mowed areas showed the best situation, and the recovery in flooded areas was also relatively evident. The successful application of eDNA metabarcoding technology in this study highlights its value as a reliable tool for assessing aquatic biodiversity.</p>

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Impacts of Spartina alterniflora Control Measures on Wetland Aquatic Communities: eDNA-Based Diversity Responses of Fish and Zooplankton

  • 期刊论文

  • 发表日期：

    2025年12月2日

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  • Yanming Sui,
  • Yanan Wei,
  • Wanjun Feng,
  • Dagui Liao,
  • Cong Yan,
  • Jiyi Chen,
  • Linlan Lv

摘要

The Yancheng National Nature Reserve for Rare Birds in Jiangsu Province is an important coastal tidal wetland reserve. However, the invasive species Spartina alterniflora has caused severe ecological damage to its ecosystem. Therefore, preventing and controlling S. alterniflora and evaluating biodiversity restoration are of crucial ecological significance. In this study, a combination of mowing, flooding, and plowing was adopted in the reserve to inhibit S. alterniflora. Subsequently, eDNA technology was used to sample and analyze fish and zooplankton communities, and the recovery of community structure was quantified using the Shannon index, Simpson index, and Pielou index. Biodiversity indices revealed different recovery patterns: the species comeback of zooplankton and fish communities in plowed areas was the least obvious, while mowed areas showed the best situation, and the recovery in flooded areas was also relatively evident. The successful application of eDNA metabarcoding technology in this study highlights its value as a reliable tool for assessing aquatic biodiversity.