2. STUDY OF PHYTOBENTHOS IN VAITARNA RIVER NEAR GHODMAL, TAL-VADA, THANE, MAHARASHTRA by SHILPA K. PATIL-BHONDE AND R.P. ATHALYE
Phytobenthos are the benthic primary producers which can supply up to 33% of organic budget of aquatic ecosystem, providing an important energy source for the food web. Due to growing urbanization, sand from rivers which is best for construction purpose, is heavily demanded and hence sand dredging is a common anthropogenic activity in the riverbeds. This can adversely affect the Phytobenthos. Quantitative and qualitative composition of Phytobenthos was studied monthly, at sand dredged and undredged sites in Vaitarna River at Ghodmal, Tal.-Vada, Dist. Thane, Maharashtra during period Oct. 2008 to Sept. 2009. The Phytobenthos of the two sites comprised of 14 genera types belonging to Chlorophyceae, Bacillariophyceae and Cyanophyceae. The dominant genera were Oscillatoria, Spirogyra, Navicula, Lyngbya, Spirulina which are known to be pollution tolerant. In the present paper the seasonal fluctuations in the Phytobenthos types and their correlation with the environmental parameters are elaborated.
KEY WORDS: Vaitarna River, Phytobenthos, Environmental parameters Sand dredging.