Causal analysis of the diversity of medusae in East China Sea  

作　　者：Zhaoli XU Mao LIN Qian GAO 

机构地区：[1]Key and Open Laboratory of Marine and Estuary Fisheries,Ministry of Agriculture of China,East China Sea Fisheries Research Institute,Chinese Academy of Fisheries Sciences,Shanghai 200090,China [2]The Third Institute of Oceanography,State Oceanic Administration,Xiamen 361005,China

出　　处：《Frontiers in Biology》2008年第3期300-307,共8页生物学前沿（英文版）

基　　金：This study was funded by theMajor Research Plan of the National Natural Science Foundation of China(No.90511005);the National Basic Research Program(No.G2001CB409700).We thank Wang Yunlong,Chen Yuanquan,Yuan Qi,Jiang Mei,He Dehua,Yang Guanmin,Yang Yuanli,Hong Bo and Hang Jindi for sampling,in-door sample processing and data processing.Special thanks to Prof.Zhang Jinbiao for his great work in identification of the species.We also thank Prof.Shen Xiaomin for his insightful suggestion and great efforts in the preparation of the manuscript.

摘　　要：Based on the maritime data collected from 23°30′-33°00′N and 118°30′-128°00′E of the East China Sea(ECS)in four seasons during 1997-2000,the dynamics of medusae diversity and their causes were analyzed.A total of 103 medusae species were identified,and these species mainly distributed in the southern and north-ern offshore areas of the ECS.Species diversity index(H′)of medusae was higher in the south than those in the north,higher in summer and winter than in spring and autumn,and higher in offshore than in the nearshore areas.The species number was closely correlated with H′value,whereas the abundance of species had no significant rela-tionship with the diversity index.The lower H′value of the nearshore in spring and autumn resulted from the aggregation of Muggiaea atlantica in the south nearshore and Diphyes chamissonis in the north nearshore.In addition,water temperature,followed by salinity,is the main environmental factor influencing the distribution of species diversity.The H′value was related to the water temperature at the 10 m layer in winter and spring,and it was associated with the surface water temperature in summer and with the 10 m-salinity-layer in autumn.In spring and summer,the isoline distribution of H′value reflected the direction of the Taiwan Warm Current and the variation of the water masses in the ECS.In winter,the isoline of the H′value indicated the incursion of Kuroshio current.In conclusion,the H′isoline is an good indicator for water masses in ECS.

关 键 词：East China Sea ZOOPLANKTON MEDUSAE DIVERSITY causal analysis 

分 类 号：P73[天文地球—海洋科学]