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

doi:10.1016/j.scitotenv.2023.168226

IOCAS-IR > 实验海洋生物学重点实验室

	Quantification of the vertical transport of microplastics by biodeposition of typical mariculture filter-feeding organisms
	Meng, Liujiang 1,3; Sun, Xiaoxia1,2,3 ; Li, Qingjie 1; Zheng, Shan 1; Liang, Junhua 1; Zhao, Chenhao 1,3
	2024-01-15
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	908 页码:12
通讯作者	Sun, Xiaoxia(xsun@qdio.ac.cn)
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.
关键词	Microparticle Vertical transport Bivalve Ascidian Biodeposition rate
DOI	10.1016/j.scitotenv.2023.168226
收录类别	SCI
语种	英语
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
WOS类目	Environmental Sciences
WOS记录号	WOS:001110471600001
出版者	ELSEVIER
WOS关键词	SHELLFISH AQUACULTURE ; MARINE-SEDIMENTS ; SEA ; RATES ; BAY
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/184156
专题	实验海洋生物学重点实验室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.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
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.