ECOLOGICAL-STUDIES OF 2 LENTIC WATER BODIES WITH REFERENCE TO CYANOBACTERIA

Ecological evaluation of Cyanobacteria of a lake and pond has been car ried out for a period of two years. Continuous blooms of Cyanobacteria were observed in one lake whereas the other semi-permanent pond is fr ee from these algal blooms. Both of these lentic water bodies had some what different environmental makeup which probably accounts for the va riation in algal density and species composition. The presence of cont inuous blooms of Microcystis aeruginosa and Oscillatoria limosa in Sar oor Nagar lake indicate the polluted nature of water body, and it is a lso considered as the degree of eutrophication of the water body. The other pond is considered as oligotrophic due to its low concentration of nutrients and less algal populations.