Spatio-temporal variation of transparent exopolymer particles (TEP) and their sinking flux in a temperate bay: Jiaozhou Bay, China

doi:10.1016/j.ecss.2020.107051

	Spatio-temporal variation of transparent exopolymer particles (TEP) and their sinking flux in a temperate bay: Jiaozhou Bay, China
	Guo, Shujin 1,2,3; Zhao, Yongfang 1,2,3; Zhu, Mingliang 1,2,3; Liang, Junhua 1,2,3; Du, Juan 1,2,3; Sun, Xiaoxia1,2,3,4,5
	2020-11-05
发表期刊	ESTUARINE COASTAL AND SHELF SCIENCE
ISSN	0272-7714
卷号	246 页码:11
通讯作者	Sun, Xiaoxia(xsun@qdio.ac.cn)
摘要	This study investigates transparent exopolymer particles (TEP) distribution, seasonal variability and its sinking flux in a shallow coastal sea, Jiaozhou Bay, China. The TEP concentrations in the bay ranged from 75 to 553 mu g xanthum gum equivalents per liter (Xeq. L-1), which was within the range of values reported in other coastal seas. Spatially, high levels of TEP were always observed in the northern bay during all four seasons. In the southern and outer bay, TEP levels were relatively low. Significant positive correlations were observed between TEP and chlorophyll a during spring, summer and fall, suggesting that phytoplankton was the primary source of TEP during these three seasons. Seasonally, TEP concentrations were highest in summer (mean = 275 +/- 142 mu g Xeq. L-1), followed by winter (mean = 209 +/- 53 mu g Xeq. L-1), and lowest in spring (mean = 142 +/- 43 mu g Xeq. L-1) and fall (mean = 180 +/- 49 mu g Xeq. L-1). High phytoplankton biomass and temperature contributed to the high TEP levels in summer, while the relatively high amount of TEP in winter was most probably derived from re -suspension of sedimentary particles. For the whole year, TEP carbon (TEP-C) contributed to a mean of -26% of POC in the bay, representing the second most important contributor to POC pool after phytoplankton (mean: 38%). Sinking flux of TEP was measured with sediment trap, and the results revealed that sinking TEP contributed to a mean of 20% of total POC flux for the four seasons in the bay. This study highlights the fact that TEP-C could represent a significant fraction of the POC pool in the coastal sea, and their sedimentation could play an important role in the carbon sedimentation in these areas.
关键词	Transparent exopolymer particles Coastal sea Carbon Sinking flux Jiaozhou bay
DOI	10.1016/j.ecss.2020.107051
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[31700425] ; National Natural Science Foundation of China[91751202] ; Health Assessment and Decision Support System for Coastal Ecosystem[XDA19060204] ; Taishan Scholars Project
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Marine & Freshwater Biology ; Oceanography
WOS记录号	WOS:000591634300001
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
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/337002/169184
专题	海洋生态与环境科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, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 5.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; 中国科学院海洋大科学研究中心
通讯作者单位	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,Zhao, Yongfang,Zhu, Mingliang,et al. Spatio-temporal variation of transparent exopolymer particles (TEP) and their sinking flux in a temperate bay: Jiaozhou Bay, China[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2020,246:11.
APA	Guo, Shujin,Zhao, Yongfang,Zhu, Mingliang,Liang, Junhua,Du, Juan,&Sun, Xiaoxia.(2020).Spatio-temporal variation of transparent exopolymer particles (TEP) and their sinking flux in a temperate bay: Jiaozhou Bay, China.ESTUARINE COASTAL AND SHELF SCIENCE,246,11.
MLA	Guo, Shujin,et al."Spatio-temporal variation of transparent exopolymer particles (TEP) and their sinking flux in a temperate bay: Jiaozhou Bay, China".ESTUARINE COASTAL AND SHELF SCIENCE 246(2020):11.

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