P-118
Some limnological aspects of Goverdhan Sagar lake of Udaipur, Rajasthan to suggest its fisheries management
Varun Mishra1, S.K.Sharma2
1. Research Scholar, College of Fisheries, MPUAT, Udaipur varunmisra.misra@gmail.com
2. Professor, College of Fisheries, MPUAT, Udaipur sharmaskudr@yahoo.com
Abstract
The current research work was conducted to find out the fish production potential of Goverdhan Sagar, a medium class water body of Udaipur in southern Rajasthan. Goverdhan Sagar is a shallow lake with a maximum depth of 7.62 meters and a shoreline of 3888.8 meters with relatively fringed margins and an area of 30.81 ha. Physico-chemical parameters of Goverdhan Sagar were found to be congenial for productivity throughout the study period. The average water quality parameters of the lake during the study period were: air temperature-30.75 ºC, water temperature-28.57ºC, depth of visibility-96.23 cm., pH-7.18, EC-381.8 µS cm-1, dissolved oxygen-5.56 mg l-1, free CO2-6.56 mg l-1, carbonates-35.41 mg l-1 , bicarbonates-137.44 mg l-1, total alkalinity-185.73 mg l-1 , orthophosphates-0.13 mg l-1 , nitrate-nitrogen-0.46 mg l-1 , GPP-0.42 g C m3 h-1 , NPP-0.26 g C m3 h-1 , CR-0.17 g C m3 h-1. The Average phytoplankton count in Goverdhan Sagar was 36.71 Nos/ml distributed in 29 genera showed the order of dominanceae – Chlorophyceae > Bacillariophyceae > Cyanophyceae > Desmidiaceae.