Trace metal anomalies in bleached Porites coral at Meiji Reef, tropical South China Sea

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	Trace metal anomalies in bleached Porites coral at Meiji Reef, tropical South China Sea
	Li, S; Yu, KF; Zhao, JX; Feng, YX; Chen, TR; lishu@scsio.ac.cn
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2017
卷号	35 期号:1 页码:115-121
关键词	Trace Metals Porites Zooxanthellae Coral Bleaching Meiji Reef South China Sea
英文摘要	Coral bleaching has generally been recognized as the main reason for tropical coral reef degradation, but there are few long-term records of coral bleaching events. In this study, trace metals including chromium (Cr), copper (Cu), molybdenum (Mo), manganese (Mn), lead (Pb), tin (Sn), titanium (Ti), vanadium (V), and yttrium (Y), were analyzed in two Porites corals collected from Meiji Reef in the tropical South China Sea (SCS) to assess differences in trace metal concentrations in bleached compared with unbleached coral growth bands. Ti, V, Cr, and Mo generally showed irregular fluctuations in both corals. Bleached layers contained high concentrations of Mn, Cu, Sn, and Pb. Unbleached layers showed moderately high concentrations of Mn and Cu only. The different distribution of trace metals in Porites may be attributable to different selectivity on the basis of vital utility or toxicity. Ti, V, Cr, and Mo are discriminated against by both coral polyps and zooxanthellae, but Mn, Cu, Sn, and Pb are accumulated by zooxanthellae and only Mn and Cu are accumulated by polyps as essential elements. The marked increase in Cu, Mn, Pb, and Sn are associated with bleaching processes, including mucus secretion, tissue retraction, and zooxanthellae expulsion and occlusion. Variation in these trace elements within the coral skeleton can be used as potential tracers of short-lived bleaching events.
资助项目	MSG
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/16472]
专题	南海海洋研究所_中科院边缘海地质重点实验室
通讯作者	lishu@scsio.ac.cn
推荐引用方式 GB/T 7714	Li, S,Yu, KF,Zhao, JX,et al. Trace metal anomalies in bleached Porites coral at Meiji Reef, tropical South China Sea[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2017,35(1):115-121.
APA	Li, S,Yu, KF,Zhao, JX,Feng, YX,Chen, TR,&lishu@scsio.ac.cn.(2017).Trace metal anomalies in bleached Porites coral at Meiji Reef, tropical South China Sea.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,35(1),115-121.
MLA	Li, S,et al."Trace metal anomalies in bleached Porites coral at Meiji Reef, tropical South China Sea".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 35.1(2017):115-121.