东江干流及其源头支流大型底栖动物群落结构特征与环境指示评价

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Abstract

Macrozoobenthos in the Dongjiang River were investigated in April to June, 2012. Altogether 78 species belonging to 7 classes, 48 families,72 genera were recorded, of which were 12 species of oligochaetes, 17 species of molluscs, 47 species of aquatic insects, and 3 of other species. The dominant group in the upstream and source area were aquatic insects, comprising 70.2% and 58.3% of the total in density. While in the downstream oligochaete was the main specie, accounting for 62.0%. The applicability of Shannon diversity, Biotic Index (BI) and Family Biotic Index (FBI) was discussed, and the water quality in mainstream of Dongjiang River remained good．The water quality in main streams was overall good, and that in the source area was better than in other stream segments. The change in macroinvertebrate community structure and the decline in the number of benthos species indicated a deterioration trend in the regional Dongjiang River from the aspect of bio-assessment of water quality.

Key words： Dongjiang River macroinvertebrate community structure water quality assessment

Received: 25 June 2013

Q958.8

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	LI Liang
	YANG Yang
	QIAO Yongmin

Cite this article:

LI Liang,YANG Yang,QIAO Yongmin. Macrobenthic community structure features and bio-assessment of water quality in Dongjiang River[J]. , 2013, 32(3): 313-317.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2013/V32/I3/313

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