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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2010 Vol.29 No.3

Study on Benthos Community Composition and Evaluation of Water Quality in Dianshan Lake in Shanghai
Author of the article:ZHANG Shi-hai, ZHANG Rui-lei*, WANG Li-qing, JI Gao-hua, FAN Zhi-feng
Author's Workplace:( Key Laboratory of Aquatic Genetic Resources and Aquacultural Ecology Certificated by the Ministry of Agriculture, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China)
Key Words:Dianshan Lake; zoobenthos; community composition; evaluation of water quality
Abstract:The zoobenthos of Dianshan Lake was investigated monthly in 2004. A Total of 17 species were identified, and the dominant species included Tylorrhynchus heterochaeta, Limnodrilus claparedeianus, Sphaerium lacustre, and Corophium sp. The average density of the zoobenthos was 177.58 ind./m2. Tylorrhynchus heterochaeta had the largest contribution, accounting for 45.85% of the average annual density. The largest density occurred in July and the minimum in January; the average annual density in sampling site 1 was higher than that of the other sites. The average annual biomass was 19.60 g/m2. Mollusca’s contribution was the greatest accounting for 97.25% of the average annual biomass, and the biggest biomass appeared in September, and the average annual biomass in sampling site 3 was obviously higher than that of the other sites. The values for the Shannon-Wiener diversity index, Margalef diversity index and Pielou index indicated that the water quality of Dianshan Lake fell in the moderate to seriously polluted status. The estimated potential fish production was 5.198×103 kg according to the biomass of zoobenthos.
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