Volume No. 13 Issue No.: 04 Page No.: 367-373 April-June 2019

 

EXPLORING THE DISTRIBUTION, AND DIVERSITY PATTERN OF DIATOMS FROM PAVANA RIVER, PUNE, INDIA

 

Shrushti S. Patil and Sonali Shinde

Annasaheb Kulkarni Department of Biodiversity, Abasaheb Garware College, Karve road, Pune, Maharashtra (INDIA)

 

Received on : June 05, 2018

 

ABSTRACT

 

In an attempt to evaluate the spatio-temporal variation in diversity of diatoms and associated water quality, we established 3 stations on the river Pavana based on point and non point sources of pollution. Three stations namely upstream, middle stream, and downstream were selected and sampled every month for physicochemical parameters and Microscopic Diatom analysis. Diatoms are composed of siliceous cell wall making it a reliable tool for monitoring water pollution. The relationship between water variables affecting species diversity in 3 site stations were analyzed by multivariate analysis using Canonical Correspondence Analysis method. We observed species richness higher in undisturbed water flow i.e. at the source of the river (upstream), indicating the importance of diatom diversity in water quality analysis. This also suggests water chemistry as a controlling factor to diatom variation. Diatoms like Phinnularia, Cymbella, Navicula, Nitzschia, and Fragilaria were observed in all the three stations. Epithemia diatom, a fresh water diatom was abundant upstream and Nitzschia observed in highly polluted water was abundant in downstream water flow. Our result indicates the importance, and a correlation of stream flow harboring a unique diatom community. Thus this study will aid to understand the factors affecting the distribution pattern of diatoms and predict the water environment which may also help to redeem the water quality in the future.

 

Keywords : Phytoplankton, Epilithic diatoms, Bioindicators, Water quality, Diversity pattern, Physicochemical parameters

 

 

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