Primary production efficiency in different environmental settings of Sahstradhara hill-stream, Dehradun

Abstract

An investigation was conducted on primary productivity and water quality of Sahastradhra hill-stream for evaluation of aquatic ecosystem status in different environmental settings along with the stream. The factors such as temperature, pH, carbon dioxide and plankton on which primary productivity depends were studied. It was pointed out that the Gross primary productivity showed a negative relationship with temperature, pH and carbon dioxide. The present paper deals with the production efficiency of Sahastradhara hill stream, Dehradun and maximum production efficiency of Sahastradhara stream was found 66.66% at sampling site- III in the month of December 2003, while minimum production efficiency was recorded 20.79% at site- IV during May 2004.

Keywords

• Production efficiency
• Primary productivity
• Photosynthesis
• Hill-stream ecology