Seasonal Variation in Primary Productivity of Freshwater Reservoirs of Yadigir District, Karnataka, India

Abstract:
Primary productivity provides information regarding to the amount of energy available to support biological component of aquatic ecosystem. The present investigation is aimed to understand the status of primary productivity of freshwater reservoir namely, Mailapur reservoir of Yadgir district. The primary productivity has been determined by using standard ‘Light and Dark bottle’ method of Garden and Gran (1927) at an interval of fortnight in every month a period of one year i.e 2014-15. The study results reveals that Primary productivity of Mailapur reservoir high and it support better growth biotic components like zooplanktons etc.

Keywords:
Gross primary productivity, Net primary productivity Mailapur reservoir.

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