Seasonal variation of diatoms density and species richness was studied of Lotus Lake. This reveled that the density of diatoms was maximum in summer, while it was minimum in post-monsoon. Maximum species richness of diatoms was recorded in summer, while minimum species richness was recorded in winter. The diatoms structure depends on a variety of environmental factors that include biological parameters as well as various physico-chemical factors. The Pearson correlation was calculated by keeping diatoms as dependent variable and other abiotic factors as independent variables.
