Indian Journal of Science and Technology
Year: 2008, Volume: 1, Issue: 3, Pages: 1-5
Subrat Naik1 , R. C. Panigrahy1* , and Anil Mohapatra2
1Department of Marine Sciences, Berhampur University, Bhanjabihar, Berhampur-760007. Orissa 2Department of Environmental Sciences, Fakir Mohan University, Balasore, Orissa, India.
*Author for the correspondence:
R. C. Panigrahy
Department of Marine Sciences, Berhampur University, Bhanjabihar
Berhampur-760007. Orissa E-mail: [email protected]
The spatio-temporal variation in zooplankton species composition, population density and relative abundance in Chilka lake studied during pre-monsoon (May), monsoon (August) and post-monsoon (October) showed conspicuous fluctuations. The average population density varied between 218 and 1296 org. m-3; while the biomass values ranged from 1.72- 3.30 g m-3. Copepods, chaetognaths, cladocerans, mysids, lucifers, euphausids, siphonophores and sergestids have emerged as dominant groups. Copepods alone contributed nearly 70% of total density. The distribution of zooplankton found to be significantly influenced by salinity variations. Role of other physico-chemical parameters and food supply could also be taken as important factors influencing the sector wise distribution of zooplankton in the lake system.
Keywords: Chilka lake, zooplankton, biomass, abundance
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