Evaluation of Pollution by Palmer’s Algal Pollution Index and Physico-Chemical Analysis of Water in Four Temple Ponds of Mattancherry, Ernakulam, Kerala

The present study has been made to evaluate the organic pollution level of four temple ponds of Mattancherry Taluk in Ernakulam district. The Palmer's algal index showed that all the four ponds have high organic pollution. Algae found in the ponds belonged to Chlorophyceae, Cyanophyceae, Euglenophyceae and Bacillariophyceae. A toxic bloom forming algae Microcystis aeruginosa was observed in three ponds. The physico-chemical analysis data supported the Palmer's organic pollution index.