Study on Habitat Ecology and Phytoplankton Diversity of Nagathibelagalu Tank in Industrial town Bhadravathi, Karnataka, India

摘要

Physico-chemical characteristics and phytoplankton diversity of Nagathibelagalu tank of Bhadravathi town was studied for a period of twelve months from January to December 2008. The estimated water quality parameters were compared with the standard values prescribed by the Bureau of India Standards (BIS) and World Health Organization (WHO). The results of physico-chemical analysis revealed that water is polluted due to high BOD, free CO_2, phosphate and nitrate. Atotal of 44 species belonging to 29 genera of phytoplankton were recorded, of which Chlorophyceae and diatoms were found to be dominant among four classes. Pollution tolerant species such as Scenedesmussp., Coelastrvm sp., Euglenasp., Trachelomonas sp. and Microcystis aervginosa were observed.