长江常熟江段渔业群落结构及物种多样性初步研究

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Abstract

Primary studies on structure of fishery community and species diversity in Changshu section of the Yangtze River were carried out during 2000-2006.Fishes,shrimps and crabs covered 13 orders,29 families and 66 species were collected in this area.Number of species belonging to Cypriniformes was the most and the second was fishes belonging to Perciformes.There were four ecological types,which were semi-migrated fishes between the Yangtze River and lakes,migrated fishes between the Yangtze River and the sea,estuarine fishes and resident fishes.Economical fishes were more than others.Dominant species were Parabramis pekinensis,Carassius auratus auratus,Coilia macrognathos,Coreius heterodon,Cu1ter ilishaeformis and Hemiculter leucisculus.The diversity indexes from 2000 to 2006 were analysed that Margalef's index was 1.68,Wilhm's index 2.50,McNaughton's index 0.37 and Pielou's index 0.76.Value of McNaughton's index was a little lower than oher fishery community,while values of Margalef's index,Pielou's index and Wilhm's index were higher.Unfavorable influence of irrigation works,water pollution and water resources adjusting on the fishery resources in Changshu section was discussed。 Advices how to develop and protect fishery resources in the area were given.

Key words： Yangtze River Changshu section structure of fishery community species diversity

Received: 25 December 2007

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	Articles by authors
	ZHANG Min-ying
	XU Dong-po
	DUAN Jin-rong
	LIU Kai
	SHI Wei-gang

Cite this article:

ZHANG Min-ying,XU Dong-po,DUAN Jin-rong, et al. Primary studies on structure of fishery community and species diversity in Changshu section of the Yangtze River[J]. , 2007, 26(6): 525-530.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2007/V26/I6/525

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