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

作     者：SHEN JianWei YANG HongQiang WANG Yue FU FeiXue ZHAO Na 

作者机构：CAS Key Laboratory of Marginal Sea GeologySouth China Sea Institute of OceanologyChinese Academy of Sciences University of Chinese Academy of Sciences Department of Biological SciencesUniversity of Southern California 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2013年第56卷第3期

页      面：1471-1486页

核心收录：

学科分类：070704[理学-海洋地质] 0709[理学-地质学] 07[理学] 0707[理学-海洋科学] 

基　　金：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) Knowledge Innovation Program of Chinese Academy of Sciences (Grant No.SQ201114) 

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

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 *** indicate a very high coral mortality with few living corals in the reef flat of Yongxing ***,macro algae,sea grass and cyanobacteria are common in reef *** and microbially induced carbonates occur in reef *** corals grow mainly in the reef crest and fore reef,but are also declined *** 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 *** facies include coast,reef flat,reef crest and fore reef,and fore-reef *** carbonate sediments are composed of coral skeletons and framework,coral fragments,bioclasts,and lime *** 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 *** flat is occupied mainly by the macro algae and Heliopora coerulea *** 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 *** characteristics and geomorphologic features are different between the southeast and northwest reef-flat fronts(reef crest and fore reef) of Yongxing *** 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 ***(cyanobacteria Lyngbya sp.) occur generally in the inner reef flat and reef ponds of reef crest with restricted water *** algae g