Trophic transfer, biomagnification and risk assessments of four common heavy metals in the food web of Laizhou Bay, the Bohai Sea

doi:10.1016/j.scitotenv.2019.03.140

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	Trophic transfer, biomagnification and risk assessments of four common heavy metals in the food web of Laizhou Bay, the Bohai Sea
	Liu, Jinhu 1,2,4; Cao, Liang 1,2,4; Dou, Shuozeng 1,2,3,4
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-06-20
卷号	670 页码:508-522
关键词	Metal contaminants Biotransference Trophic relations Aquatic ecosystem Ecological risk Human health
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2019.03.140
通讯作者	Dou, Shuozeng(szdou@qdio.ac.cn)
英文摘要	This study investigated the trophic transfer of four common toxic metals (Cd, Cr, Cu and Hg) in the food web and assessed their potential ecological risks in Laizhou Bay, a spawning area for fishery populations in the Bohai Sea, North China. Based on the predation relations of 43 species that were representatives of the main trophic levels (TLs), a simplified food web was constructed using stomach content analysis and stable nitrogen isotope ratio (delta N-15) analysis. Using copepods as the baseline species (TL = 2.00), the TLs of the organisms ranged from 1.96 (Polychaeta) to 447 (Japanese flounder) and showed the following ranking order: predatory pelagic or demersal fish > medium demersal fish > crustacean, cephalopod, small pelagic or demersal fish > zooplankton and Polychaeta The metals showed different trophic transfer behaviors in the food web. Hg and Cr tended to be efficiently biomagnified between TLs, along the main food chains and in the food web. Cu biodiluted significantly with increasing TLs, while Cd showed no biomagnification or biodilution trends in the food web. At low or moderate levels of Cd and Hg, potential ecological risks were detected in the water and sediments at only a few sites, indicating their overall low ecological risks in the environment. The metals in the important fishery species (four top predatory fish, two cephalopods and eight crustaceans) were below the permissible limits, except for Cd in octopus and paddle crab, which reached or exceeded the most restrictive criteria. Based on the provisional tolerable weekly intake (PTWI) criteria, the safe weekly human consumption levels by humans of the predatory fish, cephalopods and crustaceans were species-specific (0.20-4.44 kg) and should be cautiously assessed. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	National Key Basic Research Program[2015CB453302] ; National Natural Science Foundation of China[41406176] ; NSFC-Shandong Joint Fund for Marine Science Research Centre[U1606404]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000464681800051
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/161086]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Dou, Shuozeng
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jinhu,Cao, Liang,Dou, Shuozeng. Trophic transfer, biomagnification and risk assessments of four common heavy metals in the food web of Laizhou Bay, the Bohai Sea[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,670:508-522.
APA	Liu, Jinhu,Cao, Liang,&Dou, Shuozeng.(2019).Trophic transfer, biomagnification and risk assessments of four common heavy metals in the food web of Laizhou Bay, the Bohai Sea.SCIENCE OF THE TOTAL ENVIRONMENT,670,508-522.
MLA	Liu, Jinhu,et al."Trophic transfer, biomagnification and risk assessments of four common heavy metals in the food web of Laizhou Bay, the Bohai Sea".SCIENCE OF THE TOTAL ENVIRONMENT 670(2019):508-522.