Structure of community and biodiversity of larvae fish in spring and autumn 2010-2011 in Yangtze River Estuary and its adjacent waters

Jiang Mei; Li Lei; Shen Xinqiang; Quan Weimin

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Jiang Mei, Li Lei, Shen Xinqiang, Quan Weimin. Structure of community and biodiversity of larvae fish in spring and autumn 2010-2011 in Yangtze River Estuary and its adjacent waters[J]. Haiyang Xuebao, 2014, 36(6): 131-137.

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Structure of community and biodiversity of larvae fish in spring and autumn 2010-2011 in Yangtze River Estuary and its adjacent waters

East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090

Received Date: 2013-07-22

Abstract

Abstract

Univariate and multivariate statistics were used to analyze the structure of larvae fish community based on the data collected from the surveys in Yangtze River Estuary and its adjacent waters in spring and autumn 2010-2011.A total of 27 species belonging to 5 orders,14 families were captured from four surveys. The dominant species mainly contained Engraulis japonicus,Coilia mystus,Stolephorus commersonii,Liza haematocheila,Nibea albiflora,Acanthogobius flavimanus and Pseudolaubuca engraulis. The Shannon-Weaver (H') value fluctuated greatly in an investigation cycle,which was appreciably lower in 2011 than that in 2010. The year variations of community structure and diversity index of larvae fish were more significant in spring than those in summer. The larvae fish community was clustered into two groups which coresponded with the freshwater area and brackish water area of Yangtze River Estuary,respectively. The abundance of larvae fish in both groups was mainly affected by salinity,indicating that salinity was the major cause of the spatiotemporal difference of larvae fish community in the Yangtze River Estuary.
- Yangtze River Estuary,
- larvae fish,
- community structure,
- cluster analysis

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