[Diversity of Zooplankton and Niche Characteristics of Keystone Species in the Weihe River Based on eDNA].

) was 0.72, and the degree of overlap was generally high. RDA analysis further identified that water environmental variables were closely related to changes in the zooplankton community structure and niche differentiation. For example, total nitrogen and water temperature were the main limiting factors, which play important roles in shaping the zooplankton community structure.