Mercury bioaccumulation in the food web of Three Gorges Reservoir (China): Tempo-spatial patterns and effect of reservoir management

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	Mercury bioaccumulation in the food web of Three Gorges Reservoir (China): Tempo-spatial patterns and effect of reservoir management
	Li, Jun 1,2; Zhou, Qiong 1,2; Yuan, Gailing 1,2; He, Xugang 1,2; Xie, Ping 1,3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2015-09-15
卷号	527 期号:*页码:203-210
关键词	Total mercury Biomagnification Reservoir effect Stable isotope Fish
ISSN号	0048-9697
通讯作者	Zhou, Q (reprint author), Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China.
英文摘要	Tempo-spatial patterns of mercury bioaccumulation and tropho-dynamics, and the potential for a reservoir effect were evaluated in the Three Gorges Reservoir (TGR, China) from 2011 to 2012, using total mercury concentrations (THg) and stable isotopes (delta C-13 and delta N-15) of food web components (seston, aquatic invertebrates and fish). Hg concentrations in aquatic invertebrates and fish indicated a significant temporal trend associated with regular seasonal water-level manipulation. This includes water level lowering to allow for storage of water during the wet season (summer); a decrease of water levels from September to June providing a setting for flood storage. Hg concentrations in organisms were the highest after flooding. Higher Hg concentrations in fish were observed at the location farthest from the dam. Hg concentrations in water and sediment were correlated. Compared with the reservoirs of United States and Canada, TGR had lower trophic magnification factors (0.046-0.066), that are explained primarily by organic carbon concentrations in sediment, and the effect of "growth dilution". Based on comparison before and after the impoundment of TGR, THg concentration in biota did not display an obvious long-term reservoir effect due to (i) short time since inundation, (ii) regular water discharge associated with water-level regulation, and/or (iii) low organic matter content in the sediment. (C) 2015 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	FRESH-WATER FISH ; STABLE-ISOTOPE ANALYSIS ; HEAVY-METAL POLLUTION ; TROPHIC POSITION ; NORTHERN MANITOBA ; INORGANIC MERCURY ; METHYLMERCURY ; CANADA ; LAKE ; ACCUMULATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000356225300021
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/23848]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
作者单位	1.Huazhong Agr Univ, Coll Fisheries, Minist Agr, Key Lab Freshwater Anim Breeding, Wuhan 430070, Peoples R China 2.Freshwater Aquaculture Collaborat Innovat Ctr Hub, Wuhan 430070, Peoples R China 3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Li, Jun,Zhou, Qiong,Yuan, Gailing,et al. Mercury bioaccumulation in the food web of Three Gorges Reservoir (China): Tempo-spatial patterns and effect of reservoir management[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2015,527(*):203-210.
APA	Li, Jun,Zhou, Qiong,Yuan, Gailing,He, Xugang,&Xie, Ping.(2015).Mercury bioaccumulation in the food web of Three Gorges Reservoir (China): Tempo-spatial patterns and effect of reservoir management.SCIENCE OF THE TOTAL ENVIRONMENT,527(*),203-210.
MLA	Li, Jun,et al."Mercury bioaccumulation in the food web of Three Gorges Reservoir (China): Tempo-spatial patterns and effect of reservoir management".SCIENCE OF THE TOTAL ENVIRONMENT 527.*(2015):203-210.