PHYSICO-CHEMICAL CHARACTERISTICS OF A VILLAGE POND NEAR NASIK

摘要

The water quality parameters and algae of a pond at the village Sayane, near Malegaon, Nasik, have been studied from July to December 1999. The parameters varied temperature 17-25℃, pH-7.27-7.69, dissolved oxygen- 2.61 - 6.64 mg/l, Free CO2-00--99 mg/l, alkalinity 10-30 mg/l, calcium-14.42-56.11 mg/l, hardness- 160-326 mg/l, chloride 176-362 mg/l. Algal taxa belonging to 4 algal groups i.e. Cyanophyceae, Chlorophyceae, Bacillariophyceae and Euglenophyceae were identified. Physico-chemical parameters showed that water of this pond is very hard and unsuitable for drinking purpose and oligotrophic. The presence of species of Oscillatoria, Scenedesmus, Closterium and Fragilaria in pond water clearly indicated that water is polluted.