Abstract
In order to explore the zoobenthos community composition and the status of water quality in Songhua River in Harbin city, we conducted an investigation on the zoobenthos community structure in spring, summer and autumn 2008. The results showed that 60 species of zoobenthos were found totally, of which 39 species were aquatic insect Larvae, 13 species of mollusks, 7 species of annelid, 7 species of crustacean. Density variation in the scope of 26.67-3521.67 ind./m2, biomass variation in the scope of 0.14-549.89g/m2. And assessed water quality using the physic-chemical and biological methods, the results showed that water quality of Songhua River in Harbin city was in moderate-severe pollution state.
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