Physico-chemical parameters of two fresh waterbodies of Gulbarga-India, with special reference to phytoplankton

Abstract

The physico-chemical parameters with special references to phytoplanktons in two standing fresh waterbodies of Gulbarga were investigated, of the two waterbodies, the Jagat tank which is situated in the heart of Gulbarga city and is highly polluted by city sewage inflow and has become eutrophic. The Pala tank is less polluted and is mesotrophic as it is located near Pala village. The various physico-chemical parameters and their interaction with phytoplanktonic groups have been studied for a period of two years from July 1996 to June 1998. The observations indicate that high levels of temperature pH, total alkalinity, oxygen, chloride, nitrate, phosphate, total hardness, total dissolved solids and biochemical oxygen demand influence the growth of phytoplanktonic groups in Jagat tank. While comparatively low productivity was noticed in mesotrophic Pala tank due to lesser quantity of nutrients. The correlation and inter-correlation among the physico-chemical parameters and phytoplanktonic groups have also been made.