WATER QUALITY PARAMETERS AND PRIMARY PRODUCTIVITY OF KAYLANA LAKE, JODHPUR, RAJASTHAN, INDIA.

The Lake situated in west of Jodhpur city is primary used for drinking water supply in addition also used for fisheries purpose. Kaylana Lake’s water quality was tested for three months using fortnightly sampling. The study provides the first hand data on lake water quality. The value of various physio-chemical parameter were temperature (28.500C to 31.500C), average visibility 102.13 cm, pH (7.78 to 8.38), electrical conductivity (309.50 to 351.25 µS/cm), dissolved oxygen (7.50 to 8.90 mgL-1), total alkalinity (24.75 to 28.25 mgL-1), total hardness(140.00 to 166.50 mgL-1), total dissolved solid (199.00 to 226.50 mgL-1), nitrate (0.42 mg L-1 to 0.49 mgL-1), phosphate (0.26 mgL-1 to 0.34 mgL-1). The mean value of primary productivity of the lake was 0.30 gCm-3h -1 GPP, 0.16 gCm-3h -1 NPP and CR of all stations was 0.13 gCm-3h -1 recorded. [ABSTRACT FROM AUTHOR]