Coral community dynamics and shallow-water carbonate deposition of the reef-flat around Yongxing Island, the Xisha Islands

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	Coral community dynamics and shallow-water carbonate deposition of the reef-flat around Yongxing Island, the Xisha Islands
	[Shen JianWei ; Yang HongQiang ; Wang Yue ; Zhao Na] Chinese Acad Sci, CAS Key Lab Marginal Sea Geol, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China ; [Yang HongQiang ; Zhao Na] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; [Fu FeiXue] Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA
刊名	SCIENCE CHINA-EARTH SCIENCES
	2013
卷号	56 期号:9 页码:1471-1486
关键词	community dynamics sedimentary zonation shallow-water carbonate deposition reef edge feature Yongxing Island
ISSN号	1674-7313
通讯作者	jwshen@scsio.ac.cn
中文摘要	Microbes and microbial carbonates in reef-flat and coral community dynamics and submarine geomorphologic features in reef crest and fore reef of Yongxing Island, the Xisha Islands, South China Sea, were studied by means of scuba diving, underwater investigation, and line intercept transect survey. Studies indicate a very high coral mortality with few living corals in the reef flat of Yongxing Island. Moreover, macro algae, sea grass and cyanobacteria are common in reef flat. Microbes and microbially induced carbonates occur in reef flat. Living corals grow mainly in the reef crest and fore reef, but are also declined dramatically. From coast to off shore, the southeast reef flat of Yongxing Island can be divided into beach, inner reef flat, outer reef flat, reef flat front (reef crest and fore reef), and fore-reef slope settings. Sedimentary facies include coast, reef flat, reef crest and fore reef, and fore-reef slope. Reefal carbonate sediments are composed of coral skeletons and framework, coral fragments, bioclasts, and lime mud. With the deterioration of environment and water quality, the coral communities tend to be distributed in the reef crest and fore reef with clean sea water, well circulation and moderate water energy. Reef flat is occupied mainly by the macro algae and Heliopora coerulea communities. The coverage statistics on the reef crest demonstrate that the coverage of Acropora cytherea is more than 28% and represents a dominant species with wave-resistant ecological type. Sedimentary characteristics and geomorphologic features are different between the southeast and northwest reef-flat fronts (reef crest and fore reef) of Yongxing Island. The former shows discontinuously tidal channels in outer reef flat and different dimensional and deep reef ponds in reef crest and fore reef, and the latter presents a typical spur-and-groove system. Microbes (cyanobacteria Lyngbya sp.) occur generally in the inner reef flat and reef ponds of reef crest with restricted water circulation. Widely algae growth indicates a eutrophic environment, and the common microbes on the coral surface in the reef flat and reef ponds also demonstrate eutrophication in seawater and deteriorated water quality.
学科主题	Geosciences, Multidisciplinary
资助信息	We thank the facilities and supports provided by the Marine Environmental Observation and Research Station at the Xisha Islands, and the Hainan Tropical Marine Biology Research Station of the South China Sea Institute of Oceanology, CAS during the fieldwork. We also thank the referees for their thorough reviews. This work was supported by National Natural Science Foundation of China (Grant Nos. 40976030, 41006029), Projects of International Cooperation and Exchanges of National Natural Science Foundation of China (Grant No. 41210104029), and Knowledge Innovation Program of Chinese Academy of Sciences (Grant No. SQ201114).
原文出处	SCIENCE PRESS
语种	英语
WOS记录号	WOS:000323746500001
公开日期	2015-01-22
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/11121]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	[Shen JianWei,Yang HongQiang,Wang Yue,et al. Coral community dynamics and shallow-water carbonate deposition of the reef-flat around Yongxing Island, the Xisha Islands[J]. SCIENCE CHINA-EARTH SCIENCES,2013,56(9):1471-1486.
APA	[Shen JianWei.,Yang HongQiang.,Wang Yue.,Zhao Na] Chinese Acad Sci, CAS Key Lab Marginal Sea Geol, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China.,[Yang HongQiang.,...&[Fu FeiXue] Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA.(2013).Coral community dynamics and shallow-water carbonate deposition of the reef-flat around Yongxing Island, the Xisha Islands.SCIENCE CHINA-EARTH SCIENCES,56(9),1471-1486.
MLA	[Shen JianWei,et al."Coral community dynamics and shallow-water carbonate deposition of the reef-flat around Yongxing Island, the Xisha Islands".SCIENCE CHINA-EARTH SCIENCES 56.9(2013):1471-1486.