文献类型：期刊文献

英文题名：Unveiling microplastic distribution and interactions in the benthic layer of the Yangtze River Estuary and East China Sea

作者：Ge, Xinyu[1];Xu, Feng[2];Li, Bo[3];Liu, Lili[2];Lu, Xiao[1];Wang, Lijuan[1];Zhang, Yunxiao[2];Li, Jiangpeng[1];Li, Jiawei[1];Tang, Yuanyuan[1]

机构：[1]Southern Univ Sci & Technol, Coll Engn, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China;[2]East China Univ Sci & Technol, Sch Resource & Environm Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[3]Zhejiang Ocean Univ, Sch Marine Sci, Zhoushan 316004, Peoples R China

年份：2024

卷号：20

外文期刊名：ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001133793800001)】；

基金：Acknowledgement The study was supported by the National Natural Science Foundation of China (No. 41977329, No. 41771513, No. 42049903, No. 42277403) and the Natural Science Foundation of Guangdong Province (No. 2021B1515020041) for financial support. We thank the crews of the Zheyuke II for their hard work at sea and the sci-entists who joined the cruise to help in data collection.

语种：英文

外文关键词：Microplastics; Bottom water; Sediment; Distribution; Correlation analysis

摘要：Microplastics (MPs), recognized as an emerging global environmental concern, have been extensively detected worldwide, with specific attention directed towards the Yangtze River Estuary (YRE) and East China Sea (ECS) regions. Despite their critical research significance, there remains a knowledge gap concerning the distribution of MPs in the benthic layer within this area, particularly regarding interactions governing their occurrence. Here we illuminate the distribution of MPs within the benthic layer and unravel the intricate interplay between bottom water and sediment in the YRE and ECS. We find that MPs are notably more abundant in bottom water, ranging from 8 to 175 times higher than in surface water. These MPs predominantly consist of polyester fibers, exhibit a size range between 0.5 and 5.0 mm, and display distinct coloration. Co-occurrence network analysis and Principal Coordinate Analysis confirm a robust correlation between MPs in bottom water and sediment, signifying the pivotal role of bottom water in mediating the distribution and transportation of MPs within the benthic layer. Furthermore, a positive correlation between MPs in sediment and bottom water turbidity underscores the impact of surface sediment resuspension and upwelling on MPs distribution. This study clarifies the intricate interactions within the benthic layer and highlights the crucial role of bottom water as a mediator in the vertical distribution of MPs, advancing our understanding of the "source-to-sink" transport processes governing MPs within water-sediment systems.(c) 2023 The Authors. Published by Elsevier B.V. on behalf of Chinese Society for Environmental Sciences, Harbin Institute of Technology, Chinese Research Academy of Environmental Sciences. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).