Volume : III, Issue : VII, July - 2014

Primary Productivity Studies in Nagaram Tank of Warangal District, Andhra Pradesh

Narasimharamulu. K, G. Benarjee

Abstract :

Primary productivity is the most important biological parameter in. It is the manifestation of food as well as energy for flora and fauna. Primary Productivity has been used for potential index of productivity for many diverse ecosystems of the world.Primary production in aquatic ecosystem is mainly controlled by the interaction of many factors like environmental and biotic factors and the nutrient status of the water body.In aquatic ecosystem algae macrophytes and green bacteria are responsible for primary productivity (Gaarder and Graan 1927). The present investigations are Gross Primary Productivity (GPP), Net Primary Productivity (NPP) and Community Respiration (CR) in Nagaram Tank of Warangal district for a period of three years i.e., June 2007 to May 2010 were aimed at understanding the productivity potential of the tank for proper fish production. Primary Production ‘in situ’ was estimated by Gaarder and Gran(1927) “light and dark bottle method”. The gross and net primary production and community respiration was calculated by using standard formula. The Gross Primary Productivity of the tank followed a more or less similar trend of fluctuations and also exhibited an increasing trend through the rainy season towards summer season with distinct peaks during three years of study and lower values were observed during rainy season. It was clear that the Gross Primary Productivity changing significantly with seasons. Net primary productivity of Nagaram tank followed a more or less similar trend of fluctuations in all four stations exhibited an increasing trend towards a rainy season and winter season with distinct peaks while lower values of net primary productivity observed during rainy season. Community Respiration observation in the tank followed a similar trend of oscillation in all four stations lower values during winter season throughout the study period and exhibiting an increasing trend toward summer and rainy season.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

NarasimhaRamulu. K, G. Benarjee Primary Productivity Studies in Nagaram Tank of Warangal District, Andhra Pradesh International Journal of Scientific Research, Vol : 3, Issue : 7 July 2014

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