Abstract
The physico-chemical profile of the freshwater reservoir (dam) in Anandpur, Saurashtra, Gujarat, where limnological research was carried out from June 2021 to May 2023, is described in this report. Temperature, transparency, pH, electrical conductivity, dissolved oxygen, biological oxygen demand, acidity, alkalinity, total hardness, calcium hardness, magnesium hardness, chlorides, salinity, and other variables were examined in the surface water of the dam. These components' seasonal fluctuations were examined, and their interrelationships are addressed. Water had an alkaline pH. Summertime saw a rise in EC, whereas the post-monsoon season saw a reduction. Alkalinity and total hardness tended to drop in the winter and summer and to rise during and after the monsoon. The amount of dissolved oxygen was highest in the winter and lowest in the summer. Temperature and EC indicated an inverse connection with dissolved oxygen. Total 36 species of zooplankton were also recorded. The highest arthropodan and rotifer zooplankton species were recorded.
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