深澳湾浮游植物群落特征及其多样性研究

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Abstract

Investigation of phytoplankton in the Shen-ao Bay, eastern Guangdong, was carried out from January 2007 to December 2008. The results showed that there were 178 species in total, representing 64 genera. Among these, diatoms (154species, representing 57 genera) accounted for 86.03%, followed by Dinoflagellates, with 23 species representing 5 genera. The means of the phytoplankton's abundance in 2007 and 2008 were respectively 5.47×10⁷ cells·m^-3 and 2.26×10⁸ cells·m^-3. The ranges of the diversity index (DI) and evenness index (EI) of the phytoplankton in 2007 and 2008 were 0.435～2.490, 0.118～0.825 and 0.211～2.632, 0.059～0.820, and they were lowest in summer. Skeletonema costatum was the most dominant species, and the means of its DI and EI were respectively 55.17%, 0.489 and 68.65%, 0.652. Skeletonema costatum in the absolute dominance in the bay changed significantly the phytoplankton community structure and increased the risk of the Skeletonema costatum blooms. The distribution of phytoplankton in Shen-ao Bay appeared to be related to hydrological conditions, nutrients and grazing impact of filtering feeder.

Key words： Shen’ao Bay phytoplankton species composition abundance diversity

Received: 25 June 2010

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	Articles by authors
	WANG Liang-gen
	DU Hong
	CHEN Wei-zhou
	HUANG Xian-bing
	ZHENG Bing
	CAO Hu-bin

Cite this article:

WANG Liang-gen,DU Hong,CHEN Wei-zhou, et al. Phytoplankton community characteristics and diversity in Shen-ao Bay,China[J]. , 2010, 29(3): 200-206.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2010/V29/I3/200

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