Biological Consequences of Environmental Pollution in Running Water Ecosystems: a Case Study in Zooplankton*
Environmental Pollution 252 (2019) 1483e1490 Contents lists available at ScienceDirect Environmental Pollution journal homepage: www.elsevier.com/locate/envpol Biological consequences of environmental pollution in running water ecosystems: A case study in zooplankton* * Wei Xiong a, Ping Ni a, b, Yiyong Chen a, b, Yangchun Gao a, b, Shiguo Li a, b, Aibin Zhan a, b, a Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing 100085, China b University of Chinese Academy of Sciences, Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049, China article info abstract Article history: Biodiversity in running water ecosystems such as streams and rivers is threatened by chemical pollution Received 19 February 2019 derived from anthropogenic activities. Zooplankton are ecologically indicative in aquatic ecosystems, Received in revised form owing to their position of linking the top-down and bottom-up regulators in aquatic food webs, and thus 10 June 2019 of great potential to assess ecological effects of human-induced pollution. Here we investigated the Accepted 12 June 2019 influence of water pollution on zooplankton communities characterized by metabarcoding in Songhua Available online 24 June 2019 River Basin in northeast China. Our results clearly showed that varied levels of anthropogenic distur- bance significantly influenced water quality, leading to distinct environmental pollution gradients Keywords: < Water pollution (p 0.001), particularly derived from total nitrogen, nitrate nitrogen and pH. Redundancy analysis fi fl Biodiversity showed that such environmental gradients signi cantly in uenced the geographical distribution of Metabarcoding zooplankton biodiversity (R ¼ 0.283, p ¼ 0.001). In addition, along with the trend of increasing envi- Songhua River Basin ronmental pollution, habitat-related indicator taxa were shifted in constituents, altering from large-sized Zooplankton species (e.g.
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