Seasonal Variation in Zooplankton Community Structure of Anchar lake, Kashmir
Journal Title: Universal Journal of Environmental Research and Technology - Year 2012, Vol 2, Issue 4
Abstract
Anchar Lake was studied for a period of one year from June 2010 to May 2011 for regular physico-chemical parameters and zooplankton community structure. The study was designed to estimate zooplankton abundance qualitatively and quantitatively. Collections were taken on monthly basis. Biodiversity of zooplankton has been calculated using Shannon- Weiner index. The zooplankton community was composed of 08 species of Rotifera, 06 species of Protozoa, 07 species of Cladocera, 02 species of Copepoda and 01 species of Ostracoda. Numerically Crustacea was the dominant Class throughout the study period. Although 24 species have been identified at various stations in the Anchar lake but Centropyxis aculeata, Keratella cochlearis, K. Valga, Alona affinis, Daphnia magna, Chydorous sphaericus, Macrothrix rosea and Cyclops bicuspidatus are common species at all stations. The abundance of zooplankton in the lake follows a sequence as: Rotifera > Cladocera > Protozoa > Copepoda > Ostracoda. Correlation between various physico-chemical parameters and zooplankton density was calculated according to Karl- Pearson’s formula. Some of the changes in zooplankton community structure was found associated with seasonal changes in temperature and nutrient content of water.
Authors and Affiliations
I. A. Ahangar, D. N. Saksena and M. F. Mir
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