Seasonal Variations in Physico-Chemical Parameters of Fresh Water Reservoir,Talab Shahi, Dholpur (Rajasthan) and Their Impact on Fish Diversity and Fish Production

Abstract

The present study investigates the seasonal variations in the physico-chemical parameters of the Talab Shahi Reservoir in the district Dholpur, Rajasthan, and their impact on fish diversity and fish production. The seasonal variations in the physico-chemical parameters play an important role to determine the quality and characteristics of water that useful to various purposesincluding fish diversity and fish production. The physico-chemical parameters analyzed during June 2022 to May 2023 include pH, Temperature, Color, Turbidity, Total Alkalinity, Total Acidity, Total Hardness, Chloride, Fluoride, Free CO_2, Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Dissolved Solids (TDS), and nutrient concentrations, such as Sulphate,Nitrates and Phosphates. These parameters were monitored over different seasons (Monsoon, Post-monsoon, Winter and Pre-monsoon) to determine the impact of seasonal changeson water quality. The fish diversity and fish production (fish catches) have been evaluated for same duration.