Nutrient dynamics in rhithron zone of Shivalik Himalayan stream Sahastradhara, Dehradun (Uttaranchal)

Sahastradhara hill-stream is a major tributary of river Song, 15 Km. far from Dehradun. It has a great importance as a picnic tourist spot of the region, whereas there is no more industrial and agricultural pollution. Hill streams of the area are the cradle of nutrients especially calcium and magnesium in the form of ions. Anthropogenic factors mainly tourists activities and catchments runoff may influence the index of nutrients in stream water. Nutrients play a vital role into niche restoration maintenance, self-regulation and water quality. Location variation in nutrients concentration of the stream was studied with special reference to correlation with physico-chemical parameters of the stream water. Calcium and Magnesium were observed in higher range in Sahastradhara stream in comparison to other hill-streams. Calcium and Magnesium were found maximum 104.21 mg/l and 68 mg/l respectively in summer season.