Water chemistry and its relation with algae of Lotus lake Islamabad

The study of water chemistry and algae of Lotus Lake, Islamabad was carried out from June 01, 2000 to May 31, 2001. Physico-chemical analysis of water taken from the same sampling point as that used for algae were taken from the monthly basis record in the laboratory. The physico-chemical analyses used in this study were temperature, pH, free carbondioxide, dissolved oxygen, ammonia nitrogen, humidity, total hardness, orthophosphate etc. and total 25 physio-chemical parameter were obtained as well as 107 species belonging to 47 genera of 5 algal groups. Cyanophyceae (57 species 53.3% belonging to 18 genera), Chlorophyceae (32 species 29.9% belonging to 24 genera), Euglenophyceae (11 species 10.3% belonging to 2 genera), Dinophyceae (6 species 5.6% belonging to 2 general, Charophyceae (1 species 0.9% belonging to 1 genus) were recorded. (author)