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Quantification of the vertical transport of microplastics by biodeposition of typical mariculture filter-feeding organisms

文献类型：期刊论文

作者Meng, Liujiang1,2; Sun, Xiaoxia1,2,3; Li, Qingjie1; Zheng, Shan1; Liang, Junhua1; Zhao, Chenhao1,2
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2024-01-15
卷号908页码:12
ISSN号0048-9697
关键词Microparticle Vertical transport Bivalve Ascidian Biodeposition rate
DOI10.1016/j.scitotenv.2023.168226
通讯作者Sun, Xiaoxia(xsun@qdio.ac.cn)
英文摘要The tremendous loss of microplastics from the sea surface and the low density of microplastics found in the water column and sediments indicate that the oceans have mechanisms capable of transporting microplastics from the surface to the seafloor. These include physicochemical processes and biological influences from marine organ-isms that drive the vertical migration of microplastics. Little is known, however, about the biological processes involved in the deposition of plastics in the marine environment. A considerable number of mariculture filter -feeding organisms can consume substantial amounts of suspended substances in the water column, and these organisms are ideal candidates for depositing microplastics. In this study, we analyzed microplastic abundance in typical mariculture filter feeders, i.e., ascidians (Halocynthia roretzi), oysters (Crassostrea gigas), scallops (Chlamys farreri) and clams (Ruditapes philippinarum), quantified the number and characteristics of the microplastics they deposited in situ, and further compared microplastic biodeposition rates. Microplastics were present in feces and pseudofeces and sank to form biodeposits rather than accumulating to significant levels in organisms. Micro -plastics were found in significantly higher numbers in the biodeposits of mariculture organisms than in the control deposits (p < 0.01). The shape and color of the microplastics in the sediments were not impacted by the presence of organisms (p > 0.05), but the deposition of <1000 mu m and positive-buoyancy (less dense than seawater) microplastics was significantly increased in the biodeposits (p < 0.05). The highest microplastic biodeposition rate was found in scallops (1.14 +/- 0.07 items & sdot;ind(-1)& sdot;d(-1) or 0.5 +/- 0.03 items & sdot;g(- 1)& sdot;d(-1)). These results suggest that mariculture filter-feeding organisms have important biodepositional functions that influence the fate of microplastics through the transfer of microplastics from the surface to the seafloor. This study could contribute to a better understanding of the biological plastic pump mechanisms in oceans.
WOS关键词SHELLFISH AQUACULTURE ; MARINE-SEDIMENTS ; SEA ; RATES ; BAY
资助项目National Natural Science Foundation of China[U2006206] ; National Natural Science Foundation of China[42006118] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050303] ; International Science Partnership Program of the Chinese Academy of Sciences[133137KYSB20200002] ; International Science Partnership Program of the Chinese Academy of Sciences[121311KYSB20190029] ; Taishan Scholars Project
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:001110471600001
源URL[http://ir.qdio.ac.cn/handle/337002/184155]  
专题海洋研究所_实验海洋生物学重点实验室
海洋研究所_胶州湾海洋生态系统国家野外研究站
通讯作者Sun, Xiaoxia
作者单位1.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Natl Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Meng, Liujiang,Sun, Xiaoxia,Li, Qingjie,et al. Quantification of the vertical transport of microplastics by biodeposition of typical mariculture filter-feeding organisms[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,908:12.
APA Meng, Liujiang,Sun, Xiaoxia,Li, Qingjie,Zheng, Shan,Liang, Junhua,&Zhao, Chenhao.(2024).Quantification of the vertical transport of microplastics by biodeposition of typical mariculture filter-feeding organisms.SCIENCE OF THE TOTAL ENVIRONMENT,908,12.
MLA Meng, Liujiang,et al."Quantification of the vertical transport of microplastics by biodeposition of typical mariculture filter-feeding organisms".SCIENCE OF THE TOTAL ENVIRONMENT 908(2024):12.

入库方式： OAI收割

来源：海洋研究所

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