Combining sterols with stable carbon isotope as indicators for assessing the organic matter sources and primary productivity evolution in the coastal areas of the East China Sea

doi:10.1016/j.csr.2021.104446

	Combining sterols with stable carbon isotope as indicators for assessing the organic matter sources and primary productivity evolution in the coastal areas of the East China Sea
	Wang, Yueqi 1,2,3,4; Song, Jinming1,2,3,4,5 ; Duan, Liqin 1,2,3,4; Yuan, Huamao 1,2,3,4; Li, Xuegang 1,2,3,4; Li, Ning 1,2,3,4,5; Zhang, Qian 2,4,5; Liu, Jin 2,4,5; Ren, Chengzhe6
	2021-07-01
发表期刊	CONTINENTAL SHELF RESEARCH
ISSN	0278-4343
卷号	223 页码:11
通讯作者	Song, Jinming(jmsong@qdio.ac.cn) ; Duan, Liqin(duanliqin@qdio.ac.cn)
摘要	To identify the sedimentary organic matter (OM) sources and reconstruct primary productivity evolution process in the coastal areas of the East China Sea (ECS), carbon, nitrogen and carbon stable isotope (delta 13C) combined with sterols were studied in the surface and core sediments. The quantitative calculations of delta 13C model and characteristic sterols suggested that the OM is derived from mixed marine and terrestrial inputs. Sinking marine phytoplankton was the dominant marine OM (MOM) source, with the average MOM proportion calculated by two end-member model of delta 13C and characteristic sterol analysis of 73% and 62%, respectively. Terrestrial organic matter (TOM) displayed a decreasing trend seaward, attributed to the Changjiang River input as the dominant terrestrial source pathway. The decreased proportion of TOM with age in the core sediment was mainly controlled by the fluctuating changes of freshwater and sediment influxes of the Changjiang River. The sum content of epi-brassicasterol and dinosterol increased with age in recent 30 years, suggesting the increasing phytoplankton productivity. Enhanced anthropogenic nutrient inputs from the Changjiang River as well as the incremental nutrient supplement from the deep waters of the coastal upwelling area aggravated the phytoplankton blooms. Besides, the increasing ratio of epi-brassicasterol to dinosterol contents (B/D ratio) with age revealed the increasing diatom productivity relative to dinoflagellate productivity. This variation was mostly attributed to the natural forcing of the increased nutrient supplement from intensified coastal upwelling in the Zhejiang coastal mud area.
关键词	Sterols Stable carbon isotope Organic matter sources Phytoplankton community structure Sediment East China Sea
DOI	10.1016/j.csr.2021.104446
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050501] ; National Natural Science Foundation of China[41676068] ; National Natural Science Foundation of China[41976037] ; Key Project of Center for Ocean Mega-Science of the Chinese Academy of Sciences[COMS2019Q12]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000655514800003
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：6[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/337002/176808
专题	海洋生态与环境科学重点实验室
通讯作者	Song, Jinming; Duan, Liqin
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 5.Chinese Acad Sci, Publ Technol Serv Ctr, Inst Oceanol, Qingdao 266071, Peoples R China 6.Zhejiang Ocean Univ, Coll Marine Sci & Technol, Zhoushan 316004, Peoples R China
第一作者单位	海洋生态与环境科学重点实验室; 中国科学院海洋大科学研究中心
通讯作者单位	海洋生态与环境科学重点实验室; 中国科学院海洋大科学研究中心; 中国科学院海洋研究所
推荐引用方式 GB/T 7714	Wang, Yueqi,Song, Jinming,Duan, Liqin,et al. Combining sterols with stable carbon isotope as indicators for assessing the organic matter sources and primary productivity evolution in the coastal areas of the East China Sea[J]. CONTINENTAL SHELF RESEARCH,2021,223:11.
APA	Wang, Yueqi.,Song, Jinming.,Duan, Liqin.,Yuan, Huamao.,Li, Xuegang.,...&Ren, Chengzhe.(2021).Combining sterols with stable carbon isotope as indicators for assessing the organic matter sources and primary productivity evolution in the coastal areas of the East China Sea.CONTINENTAL SHELF RESEARCH,223,11.
MLA	Wang, Yueqi,et al."Combining sterols with stable carbon isotope as indicators for assessing the organic matter sources and primary productivity evolution in the coastal areas of the East China Sea".CONTINENTAL SHELF RESEARCH 223(2021):11.

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