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Abstract
Physico-chemical analysis and Phytoplankton survey of the Mahapoli Lake was carried
out on monthly basis for the period of one year from February-2016 to January-2017. PH
determined alkaline nature of the lake ranging 7.2 to 7.9, Dissolved oxygen 4.2-7.77mg/l was
recorded. Alkalinity (97 to 183mg/l), total Hardness (69 to 142 mg/l), chlorides (45 to 63 mg/l)
and the nutrients like phosphates and nitrates were at maximum in summer and minimum in
rainy season. During the study period, out of 19 algal genera, Cyanophyceae with 6 genera,
Chlorophyceae with 9 genera and Bacillariophyceae with 4 genera were recorded. The highest
numbers of Phytoplankton were recorded in post monsoon and lowest in monsoon.