Studies on fresh water algae in relation to chemical constituents of Thiruneermalai temple tank near Chennai, India-I

A preliminary investigation was carried out for six months from Apr’ 2007 to Sep’ 2007 to access the status of algal biodiversity of Thiruneermalai Temple tank near Pallavaram (Chennai). The algae identified in this temple tank belong to the Classes, Cyanophyceae, Chlorophyceae, Bacillariophyceae and Euglenophyceae. Physical parameters such as light intensity, pH, humidity, water temperature, atmospheric temperature, odour, appearance, turbidity NTU, TDS, electrical conductivity, and chemical parameters such as total hardness, calcium, magnesium, sodium, potassium, manganese, free ammonia, nitrate, nitrite, chloride, sulphate, phosphate, silca, BOD were recorded. The biological indices of water quality of all the seasons were determined using appropriate statistical method to assess the trophic status of the temple tank.