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Authors
Affiliations
1 Sri Siddhartha First Grade College, Tumkur, Karnataka, IN
2 Deptt. of Studies in Chemistry, University of Mysore, Mysore-570 006, Karnataka, IN
Source
Nature Environment and Pollution Technology, Vol 8, No 3 (2009), Pagination: 533-538
Abstract
Phytoplankton density and diversity in relation to water quality parameters like temperature, pH, DO, alkalinity and nutrients of seven lakes situated around Tumkur were assessed between the period March and November of 2008. The water samples were collected monthly and analysed for their physico-chemical characteristics. The seasonal variation of phytoplankton density and diversity were monitored and diversity indices calculated. A maximum of 26 species belonging to 18 genera of algae were observed in the samples of April 2008. The density of phytoplankton in all the water bodies was found to be maximum during summer (April), and minimum during monsoon (August), but the diversity was maximum in November. Chlorophyceae was dominant in all the selected water bodies. The Microcystis, noticed in water samples of Honnudike and Hebbur lakes, reveals moderate pollution of the lakes. There was a decreasing trend of phytoplankton population from May to August, after which it increased till November. The diversity indices of phytoplankton ranged from 1.32 to 3.34 in the month of April 2008.
Keywords
Phytoplankton Studies, Lakes of Tumkur City, Water Quality, Diversity Indices.
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