象山港国华宁海电厂附近海域小型底栖动物的群落结构

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Abstract

Three sections(designated as A,B,C),separated by 500 m along the right outfall near Guohua Power Plant in Ninghai in XiangShan Bay,were designed and used to test changes in meiofauna abundance and community structure in summer(June) and winter(December),2008.Ten meiofauna taxa with average abundance 9407.9 inds/10cm² were founded.The dominant fauna was free-living marine nematoda,which accounted for 62.3%and the following dominant one was ostracoda(accounted for 19.3 %).ANOSIM results showed that there was seasonally significant difference in meiofauna abundance(P<0.05),and average abundance(8055.3±1282.9 inds/10cm²) in summer was about three times higher than that in winter(2141.1±614.2 inds/10cm²).Among three sections,no difference in abundance existed in winter,while significant difference existed in summer(P<0.05).Furthermore,the lowest abundance in section A(1002.8 inds/10cm²) was also founded.SIMPER analysis indicated that marine nematode,ostracoda,gastrotricha,tubellaria and copepoda were the taxa that contributed to the non-similarities among sections.Moreover,these taxa often shifted in different seasons which indicated that the meiobenthic community near the Power Plant was unstable due to the high-temperature drainage,not only in horizontal distribution,but also in vertical distribution.

Key words： Xiangshan Bay power plant meiofauna community structure

Received: 25 April 2012

Q948.118

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	XIE Li
	LIN Xia
	ZHU Yi-feng

Cite this article:

XIE Li,LIN Xia,ZHU Yi-feng. Community structure of meiofauna near Guohua Power Plant in Ninghai in Xiangshan Bay[J]. , 2012, 31(2): 167-172.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2012/V31/I2/167

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