SEASONAL VARIATION AND PHYTOPLANKTON DIVERSITY IN SHETTER LAKE OF NAVALGUND, DHARWAD IN KARNATAKA, INDIA.
- P.G. Department of Studies in Botany (Microbiology Laboratory) Karnataka University, Dharwad-580 003 Karnataka- India.
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Seasonal variation and Phytoplankton diversity in Shetter Lake with regard to quality of water was undertaken from May 2012 to April 2013. Nineteen physicochemical parameters were studied related to the diversity of phytoplankton. A total of forty four genera were recorded belonging to Chlorophyceae (18), Cyanophyceae (10) Bacillariophyceae (9) Euglenophyceae (4) and Dinophyceae (1). During rainy season phytoplankton population was abundant compared to other two seasons. But during winter and summer season much fluctuation was observed in the density of Chlorophyceae, Cyanophyceae, Bacillariophyceae and Euglenophyceae members. Cyanophyceae population was high during rainy season followed by Chlorophyceae, Euglenophyceae, Bacillariophyceae members. It was specially documented that Dinophyceae members were appeared only during summer season (in the months of March and April) when phosphates were found least in the lentic water body. A total of sixty four species were recorded throughout the year belonging to Chlorophyceae (27), Cyanophyceae (15), Bacillariophyceae (11), Euglenophyceae (10) and Dinophyceae (1). Therefore, it can be concluded that the heavy load of nutrients in Shetter Lake has influenced abundance of Phytoplankton species. The investigation may also suggest that the water of Shetter Lake is not fit for drinking according to drinking water quality standards.
[Ratna V Airsang and H C Lakshman (2015); SEASONAL VARIATION AND PHYTOPLANKTON DIVERSITY IN SHETTER LAKE OF NAVALGUND, DHARWAD IN KARNATAKA, INDIA. Int. J. of Adv. Res. 3 (May). 1503-1510] (ISSN 2320-5407). www.journalijar.com
