您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Application of agricultural pesticides in a peak period induces an abundance decline of metazoan zooplankton in a lake ecosystem

文献类型： 外文期刊

作者： Kong, Ren 1 ; Yang, Chunxiang 2 ; Huang, Kai 2 ; Han, Guixin 2 ; Sun, Qian 2 ; Zhang, Yongkang 2 ; Zhang, Hui 3 ; Letcher, Robert J. 4 ; Liu, Chunsheng 1 ;

作者机构： 1.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China

2.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China

3.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China

4.Carleton Univ, Dept Chem, Ottawa, ON K1S 5B6, Canada

5.Carleton Univ, Dept Biol, Ottawa, ON K1S 5B6, Canada

关键词： Zooplankton; Freshwater ecosystem; Pesticide; Abundance decline; Agricultural run-off

期刊名称：WATER RESEARCH （ 影响因子：13.4； 五年影响因子：13.847 ）

ISSN： 0043-1354

年卷期： 2022 年 224 卷

页码：

收录情况： SCI

摘要： The contamination of pesticides has been recognized as a major stressor in fresh water ecosystems in terms of the losses of services and population declines and extinctions. However, information on the adverse effects of pesticides on zooplankton communities under natural field conditions are still lacking, although zooplankton is quite sensitive to most of pesticides in laboratory studies. In this study, a natural lake ecosystem (Liangzi Lake) was used to determine the relationship between pesticide contamination and abundance decline of metazoan zooplankton. In August 2020, the comprehensive trophic level indexes and the abundance of phytoplankton in the 14 sampling sites of Liangzi Lake were comparable, but the abundance of metazoan zooplankton showed significant variations across two orders of magnitude. These results suggested that other factors, such as pesticide contamination, might be responsible for the variations of metazoan zooplankton community. Furthermore, the responsible pesticides were screened, and totally 29 pesticides were obtained. Finally, five pesticides were identified to provide more than 99.4% toxic contributions and chlorpyrifos and cypermethrin were two main causal agents. These results were further supported by laboratory exposure experiments using D. magna and field study in November 2020, where the concentrations of the 29 pesticides were strongly decreased and the abundance of metazoan zooplankton was comparable across the 14 sites of Liangzi Lake. Taken together, this work provided an evidence that the contamination of pesticides might be responsible for the abundance decline of metazoan zooplankton in a natural freshwater ecosystem.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台