Concentrations and sinking rates of transparent exopolymer particles (TEPs) in a coastal sea: the Changjiang River (Yangtze River) Estuary

doi:10.1007/s13131-020-1660-7

	Concentrations and sinking rates of transparent exopolymer particles (TEPs) in a coastal sea: the Changjiang River (Yangtze River) Estuary
	Guo, Shujin 2,3; Sun, Jun 1
	2020-10-01
发表期刊	ACTA OCEANOLOGICA SINICA
ISSN	0253-505X
卷号	39 期号:10 页码:58-69
通讯作者	Sun, Jun([email protected])
摘要	Transparent exopolymer particles (TEPs) are ubiquitous throughout the oceans, and their sedimentation is considered an efficient biological carbon sink pathway. To investigate the role of coastal TEPs in sinking carbon from the upper layer, samples were collected in the spring and summer of 2011 in the Changjiang River (Yangtze River) Estuary, a typical coastal water. The concentrations and sinking rates of TEPs were measured, and potential sedimentation flux of TEPs was estimated. TEPs concentrations ranged from 40.00 mu g/L to 1 040.00 mu g/L (mean=(209.70 +/- 240.93) mu g/L) in spring and 56.67 mu g/L to 1 423.33 mu g/L (mean=(433.33 +/- 393.02) mu g/L) in summer, and they were higher at bloom stations than at non-bloom stations during both cruises. A significant positive correlation between TEPs concentration and chlorophyll a (Chl a) concentration was detected, suggesting that phytoplankton was the primary source of TEPs in this area. TEPs sinking rates ranged from 0.08 m/d to 0.57 m/d with a mean of (0.28 +/- 0.14) m/d in spring and 0.10 m/d to 1.08 m/d with a mean of (0.34 +/- 0.31) m/d in summer. The potential sedimentation flux of TEP-C ranged from 4.95 mg/(m(2)center dot d) to 29.40 mg/(m(2)center dot d) with a mean of (14.66 +/- 8.83) mg/(m(2)center dot d) in spring and 6.80 mg/(m(2)center dot d) to 30.45 mg/(m(2)center dot d) with a mean of (15.71 +/- 8.73) mg/(m(2)center dot d) in summer, which was similar to 17.81% to 138.27% (mean=65.15%+/- 31.75%) of sedimentation flux of phytoplankton cells in the study area. Due to the increase of TEPs concentrations and their sinking rates, sedimentation fluxes of TEPs at the bloom station were obviously higher than at the non-bloom station during both cruises. This study indicates that TEPs serve as a carbon sink in the Changjiang River Estuary, especially during bloom events, and their sedimentation should be taken into account when we study the carbon sedimentation in the coastal sea.
关键词	transparent exopolymer particles sinking rates Chang’ iang River (Yangtze River) Estuary coastal sea
DOI	10.1007/s13131-020-1660-7
收录类别	SCI
语种	英语
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000588707900007
出版者	SPRINGER
引用统计	被引频次：4[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/337002/169103
专题	胶州湾海洋生态系统国家野外研究站
通讯作者	Sun, Jun
作者单位	1.China Univ Geosci Wuhan, Coll Marine Sci & Technol, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Guo, Shujin,Sun, Jun. Concentrations and sinking rates of transparent exopolymer particles (TEPs) in a coastal sea: the Changjiang River (Yangtze River) Estuary[J]. ACTA OCEANOLOGICA SINICA,2020,39(10):58-69.
APA	Guo, Shujin,&Sun, Jun.(2020).Concentrations and sinking rates of transparent exopolymer particles (TEPs) in a coastal sea: the Changjiang River (Yangtze River) Estuary.ACTA OCEANOLOGICA SINICA,39(10),58-69.
MLA	Guo, Shujin,et al."Concentrations and sinking rates of transparent exopolymer particles (TEPs) in a coastal sea: the Changjiang River (Yangtze River) Estuary".ACTA OCEANOLOGICA SINICA 39.10(2020):58-69.

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