Ecology, Environment and Conservation Paper

ALGAL DIVERSITY OF A FRESHWATER LAKE OF TUMKUR CITY,KARNATAKA, INDIA

G. Venkateshappa and Krishna

Abstract

Water is a universal solvent, where almost all the living being’s carry out their biochemical reactions. Fresh water usually contains nutrients for all types of microorganisms, one of which, algae found commonly inlakes. Phosphorous and nitrates are the principal nutrient for algae. The study of algal diversity in freshwater is very useful to determine quality of water and nature of aquatic ecosystem. Amanikere lake inTumakuru city is one of the major lakes to receive residential sewage. Water samples were collected for thestudy of diversity of algae from June, 2017 to May, 2018. The algal samples were isolated and identifiedusing standard laboratory method of Clesceri et al., (1998). About 38 species of algae were found in randomly selected areas (1 to 6) of water samples of Amanikere lake. Some of the algae found to be in high in Amanikere lake like Cyanophyceae – Oscillatoria, Nostoc, Anabaena., Chlorophyceae – Spirogyra, CosmeriumandBacillariophyceae – Navicula, Diatoma, Fragellaria. The study carried out reveals a diversity of algae in the lake.