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cje ›› 2012, Vol. 31 ›› Issue (5): 1194-1201.

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Fish community structure in intertidal area of Acipenser sinensis Natural Reserve in Yangtze River estuary.

YANG Gang1,2, HONG Qiao-qiao1,3, ZHANG Tao1, HOU Jun-li1, ZHI Yu-long1,2, ZHUANG Long-zhen1**   

  1. (1Key and Open Laboratory of Marine and Estuarine Fisheries Resources and Ecology, Ministry of Agriculture of China, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; 2College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China; 3East China University of Science and Technology, Shanghai 200237, China)
  • Online:2012-05-10 Published:2012-05-10

Abstract: In order to understand the utilization of intertidal water area by fishes, an investigation with fyke was conducted on the fish community structure in the intertidal area of Acipenser sinensis Natural Reserve in Yangtze River estuary in May, August and November 2010. A total of 28 fish species belonging to 16 families and 10 orders were collected, among which, Lateolabrax maculates, Liza haematocheila, and Cynoglossus gracilis were the dominant species. Cypriniformes had the largest species number, followed by Perciformes. The fish communities could be classified into 6 ecological groups, i.e., estuarine species, marine stragglers, catadromous species, anadromous species, marine migrants, and freshwater species, and the estuarine species and marine migrants took up distinct advantage. Cluster analysis showed that there was a significant difference in the fish communities in autumn and in springsummer, and L. haematocheila, L. maculates, and Acanthogobius ommaturuscontributed greatest to the seasonal difference. PCA indicated that the fish communities in summer were mainly determined by marine migrants, while those in autumn were mainly determined by estuarine species. The differences in the feeding and growth of the juveniles of the marine migrants and estuarine fishes could be the main reason for the significant seasonal difference in the fish communities in the study area.  

Key words: QuickBird image, carbon reserve, stepwise regression.