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Ecological implications and drivers of emerging contaminants in Dongting Lake of Yangtze River Basin, China: A multi-substance risk analysis.
Luo, Ying; Jin, Xiaowei; Zhao, Jianglu; Xie, Huiyu; Guo, Xinying; Huang, Daizhong; Giesy, John P; Xu, Jian.
Afiliación
  • Luo Y; College of Water Sciences, Beijing Normal University, Beijing 100875, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
  • Jin X; China National Environmental Monitoring Centre, Beijing 100012, China. Electronic address: jinxw@cnemc.cn.
  • Zhao J; College of Water Sciences, Beijing Normal University, Beijing 100875, China.
  • Xie H; College of Water Sciences, Beijing Normal University, Beijing 100875, China.
  • Guo X; China National Environmental Monitoring Centre, Beijing 100012, China.
  • Huang D; Dongting Lake Eco-Environment Monitoring Centre of Hunan Province, 414000 Yueyang, China.
  • Giesy JP; Department of Veterinary Biomedical Sciences and Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada; Department of Environmental Sciences, Baylor University, Waco, TX 76798-7266, USA.
  • Xu J; College of Water Sciences, Beijing Normal University, Beijing 100875, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address: xujian@craes.org.cn.
J Hazard Mater ; 472: 134519, 2024 Jul 05.
Article en En | MEDLINE | ID: mdl-38733790
ABSTRACT
Emerging contaminants (ECs) are increasingly recognized as a global threat to biodiversity and ecosystem health. However, the cumulative risks posed by ECs to aquatic organisms and ecosystems, as well as the influence of anthropogenic activities and natural factors on these risks, remain poorly understood. This study assessed the mixed risks of ECs in Dongting Lake, a Ramsar Convention-classified Typically Changing Wetland, to elucidate the major EC classes, key risk drivers, and magnitude of anthropogenic and natural impacts. Results revealed that ECs pose non-negligible acute (30% probability) and chronic (70% probability) mixed risks to aquatic organisms in the freshwater lake ecosystem, with imidacloprid identified as the primary pollutant stressor. Redundancy analysis (RDA) and structural equation modeling (SEM) indicated that cropland and precipitation were major drivers of EC contamination levels and ecological risk. Cropland was positively associated with EC concentrations, while precipitation exhibited a dilution effect. These findings provide critical insights into the ecological risk status and key risk drivers in a typical freshwater lake ecosystem, offering data-driven support for the control and management of ECs in China.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Lagos País/Región como asunto: Asia Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Lagos País/Región como asunto: Asia Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos