Deep-sea coral evidence for dissolved mercury evolution in the deep North Pacific Ocean over the last 700 years

doi:10.1007/s00343-021-0474-6

	Deep-sea coral evidence for dissolved mercury evolution in the deep North Pacific Ocean over the last 700 years
	Qu, Yang 1,2; Xu, Kuidong3 ; Li, Tao 1,2; Wang, Maoyu 1,2; Zhong, Huan 4,5; Chen, Tianyu 1,2,6
	2021-08-12
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	12
通讯作者	Chen, Tianyu(tianyuchen@nju.edu.cn)
摘要	The ocean is an important inventory of anthropogenic mercury (Hg), yet the history of anthropogenic Hg accumulation in the ocean remains largely unexplored. Deep-sea corals are an emerging archive of past ocean chemistry, which take in sinking or suspended particulate organic matter as their food sources. Such organic matter would exchange Hg with the local seawater before being consumed by the deep, sea corals. As such, the organics preserved in the coral skeleton may record the Hg evolution of the ambient seawater during the time of coral growth. Here, we report the first data on Hg concentrations variability of a deep-sea proteinaceous coral in the oligotrophic North Pacific at the water depth of 1 249 m, in attempt to understand the transfer of anthropogenic Hg into the deep Pacific ocean over the last seven centuries. We find that the Hg concentrations of different coral growth layers have remained relatively constant albeit with considerable short-term variability through time. The overall stable Hg concentration of the last seven centuries recorded in our sample suggests that anthropogenic pollution is not yet a clearly resolvable component in the deep oligotrophic North Pacific waters, in agreement with recent estimation from modelling works and observational studies of modern seawater profiles. As there is hardly an unambiguous way to separate anthropogenic Hg from the natural background based on recent seawater profiles, our historical data provide valuable information helping to understand the oceanic cycle of Hg through time.
关键词	deep-sea coral mercury deep water particulate organic matter anthropogenic perturbation
DOI	10.1007/s00343-021-0474-6
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41822603] ; National Natural Science Foundation of China[41991325] ; National Natural Science Foundation of China[41930533] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40010200] ; Fundamental Research Funds for the Central Universities[0206-14380125] ; Frontiers Science Center for Critical Earth Material Cycling Fund[DLTD2102]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000684088300003
出版者	SCIENCE PRESS
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/176005
专题	海洋生物分类与系统演化实验室
通讯作者	Chen, Tianyu
作者单位	1.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China 2.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Nanjing 210023, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Lab Marine Organism Taxon & Phylogeny, Qingdao 266071, Peoples R China 4.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resources Reuse, Nanjing 210023, Peoples R China 5.Trent Univ, Environm & Life Sci Program EnLS, Peterborough, ON K9L 0G2, Canada 6.Chinese Acad Sci, Ctr Deep Sea Res, Ctr Ocean Megasci, Inst Oceanol, Qingdao 266071, Peoples R China
通讯作者单位	中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Qu, Yang,Xu, Kuidong,Li, Tao,et al. Deep-sea coral evidence for dissolved mercury evolution in the deep North Pacific Ocean over the last 700 years[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2021:12.
APA	Qu, Yang,Xu, Kuidong,Li, Tao,Wang, Maoyu,Zhong, Huan,&Chen, Tianyu.(2021).Deep-sea coral evidence for dissolved mercury evolution in the deep North Pacific Ocean over the last 700 years.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,12.
MLA	Qu, Yang,et al."Deep-sea coral evidence for dissolved mercury evolution in the deep North Pacific Ocean over the last 700 years".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2021):12.

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