1Environmental Science Department, Netaji Subhas Open University, 1, Wood Burn Park, Kolkata 700020, India, E-mail address: das_sanjibm@yahoo.com.
2Department of Zoology, Krishnagar Govt. College, Krishnagar-741101, Nadia, India.
Plankton communities of three water reservoirs of India reflect direct relationship with organic pollution. The assessment of water quality as high or low organically polluted for three water bodies has been achieved with help of algal community, which can be used as indicator of organic pollution. Algal pollution indices according to Palmer (1969) based on genus and species were used in rating water samples for high or low organic pollution. Among 26 genera found, 20 most frequent and common genera of algae were taken into account for indexing pollution status. Water Quality Index (WQI) on the basis of weighting and rating of the chemical parameter was also used to correlate the Palmer index with Physical-chemical parameters of water reservoirs.
Palmer Index, organic pollution, water reservoir, algae, plankton, Water, Quality Index
