seasonal variation in periphytonic community in mountain springs of sahashradhara, garhwal himalayas

Sahashradhara springs, a group of one thousand springs and one of the prominent tourist spot, is located in Doon Valley of Garhwal-Himalayas. The environmental monitoring of periphyton community of Sahashradhara springs was carried out for a period of one annual cycle (October 2011-September 2012). A total of 29 species belonging to three annual classes: Bacillariophyceae (14), Chlorophyceae (11) and Cyanophyceae (04) were recorded from different springs of Sahashradhara. Among the various periphyton community the dominance and density of Bacillariophyceae was found maximum followed by Chlorophyceae and Cyanophyceae. Members of Cyanophyceae were found absent during monsoon season.