Assessment of seasonal variation in primary productivity of Arjunsagar Reservoir, Uttar Pradesh, India

Abstract

The Study was conducted in the Arjunsagar Reservoir of Dist. Mahoba U.P. in April 2017 to Jan 2018.Two sites and three seasons were selected for research i.e. Pre-monsoon, Post -monsoon and winter, Primary Productivity was calculated by light and dark bottle method and GPP, NPP & CR were calculated. The GPP was found Max in the month of Oct from S-1 is 1.187 and from S-2 1.156 mgC/l/d (1.1715±0.0155) and min in month of May 0.025 mgC/l/d from S-1 and June from S-2 0.025 mgC/l/d (0.3435±0.0625). NPP was max in the month of Oct from S-11.0931 & in Sep from S-2 1.062 (1.062±.031) and min in month of June from site S-1 0.062& S-2 is.184 (0.123±.061) respectively, where as CR was found max in May from site S-1 is .937 & in Jan S-2 is 0.312 mgC/l/d (0.4995±.4375) and found min in Sep from S-1 0.031 and were S-2 is 0.062 (0.062±0.031) in month of May and June.