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Productivity study is needed for the evaluation of the productivity of any aquatic ecosystems. The purpose of this study is to provide a baseline information regarding Hattikini Reservoir, Yadgir District, Karnataka, India for effective reservoir management. The study was carried out for a period of one year (February 2015 to January 2016) in each first week of the month using ‘light and dark bottle’ method. Results indicate that High productivity of Hattikuni reservoir favors better growth of zooplanktons and higher organisms in the reservoir.
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