• Namrata Pawaiya
• D.K. Sharma
• M.K.S. Kushwah

Seasonal Variation in Primary Productivity of Harsi Reservoir in Dabra, District of Gwalior, Madhya Pradesh was carried out during January 2011 to December 2012. Primary productivity estimated by conducting light and dark bottle method. In the year 2011 GPP lowest was 92.03±2.22 (mgcm3h-1) in the monsoon season and highest was 120.71±6.09 (mgcm3h-1) in the summer season. NPP lowest was 57.32±3.79 (mgcm3h-1) in the monsoon season and highest was 83.54±5.84 (mgcm3h-1) in the summer season. RR lowest was 34.71±1.61 (mgcm3h-1) in the monsoon season and highest was 37.17±3.31 (mgcm3h-1) in the summer season. In the year 2012 GPP lowest was 87.68±2.9 (mgcm3h-1) in the monsoon season and highest was 121.46±7.18 (mgcm3h-1) in the summer season. NPP lowest was 62.22±4.41 (mgcm3h-1) in the monsoon season and highest was 94.86±5.63 (mgcm3h-1) in the summer season. RR lowest was 22.47 ±1.95 (mgcm3h-1) in the winter season and highest was 26.6±3.69 (mgcm3h-1) in the summer season. The result indicates that productivity is greater than respiration it shows positive relationship. High productivity of Harsi reservoir showed their food chain and food web is in good condition and it favours better growth of zooplanktons and fishes.

Seasonal variation, Primary productivity, Harsi Reservoir

"Seasonal Variation in Primary Productivity of Harsi Reservoir in Dabra, District of Gwalior, Madhya Pradesh", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.831-834, June-2018, Available :http://www.jetir.org/papers/JETIR1806368.pdf

"Seasonal Variation in Primary Productivity of Harsi Reservoir in Dabra, District of Gwalior, Madhya Pradesh", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp831-834, June-2018, Available at : http://www.jetir.org/papers/JETIR1806368.pdf