Three tropical seagrasses as potential bio-indicators to trace metals in Xincun Bay, Hainan Island, South China

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Three tropical seagrasses as potential bio-indicators to trace metals in Xincun Bay, Hainan Island, South China
	Li, L ; Huang, XP
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2012
卷号	30 期号:2 页码:212-224
关键词	metal contamination seagrass bioaccumulation bio-indicator South China Sea
ISSN号	0254-4059
通讯作者	xphuang@scsio.ac.cn
中文摘要	Concentrations of the trace metals Cu, Cd, Pb, and Zn were measured in seawater, rhizosphere sediments, interstitial water, and the tissues of three tropical species of seagrasses (Thalassia hemprichii, Enhalus acoroides and Cymodocea rotundata) from Xincun Bay of Hainan Island, South China. We analyzed different environmental compartments and the highest concentrations of Pb and Zn were found in the interstitial and seawater. The concentrations of Cd and Zn were significantly higher in blades compared with roots or rhizomes in T. hemprichii and E. acoroides, respectively. A metal pollution index (MPI) demonstrated that sediment, interstitial water, and seagrasses in the sites located nearest anthropogenic sources of pollution had the most abundant metal concentrations. There was obvious seasonal variation of these metals in the three seagrasses with higher concentrations of Cu, Pb and Zn in January and Cd in July. Furthermore, the relationships between metal concentrations in seagrasses and environmental compartments were positively correlated significantly. The bioconcentration factors (BCF) demonstrated that Cd from the tissues of the three seagrasses might be absorbed from the sediment by the roots. However, for C. rotundata, Zn is likely to be derived from the seawater through its blades. Therefore, the blades of T. hemprichii, E. acoroides and C. rotundata are potential bio-indicators to Cd content in sediment, and additionally Zn content (C. rotundata only) in seawater.
学科主题	Limnology; Oceanography
语种	英语
WOS记录号	WOS:000301001900004
公开日期	2013-08-28
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10211]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Li, L,Huang, XP. Three tropical seagrasses as potential bio-indicators to trace metals in Xincun Bay, Hainan Island, South China[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2012,30(2):212-224.
APA	Li, L,&Huang, XP.(2012).Three tropical seagrasses as potential bio-indicators to trace metals in Xincun Bay, Hainan Island, South China.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,30(2),212-224.
MLA	Li, L,et al."Three tropical seagrasses as potential bio-indicators to trace metals in Xincun Bay, Hainan Island, South China".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 30.2(2012):212-224.