STUDY OF SEASONAL VARIATION OF PHYSICO-CHEMICAL PARAMETERS IN CONTEXT OF CONSERVATION OF GHORAMARA BEEL , MOINAPARA, GOLAGHAT, ASSAM

Abstract

Physico-chemical parameters play an important role in maintaining a perfect aquatic ecosystem of wetland. The area of our investigation was Ghoramara beel of Golaghat district, Assam (26°29ʹ20ʹʹ-26°29ʹ45ʹʹN and 93°55ʹ46ʹʹ-93°56ʹ46ʹʹE). The study was done from June,2019 to May, 2020 which involved the analysis of 7 physico-chemical parameters of water ,viz; PH , salinity, turbidity, temperature, TDS, conductivity, DO and evaluation of the season-wise variation of these parameters. The survey and water collection was carried out in all the four seasons viz;winter(January-February), pre-monsoon(March-May),monsoon(June-August) and postmonsoon(September-December). Temperature was maximum in monsoon and minimum in winter. PH was maximum in winter and minimum in pre-monsoon. TDS, salinity and conductivity were minimum in premonsoon and maximum in post-monsoon while turbidity was minimum in post-monsoon and maximum in monsoon. DO was minimum in monsoon but maximum in the winter. Among these parameters, PH and temperature play the most important role in this wetland ecosystem. The study also revealed destruction of the wetland habitat. Moreover, degradation of the wetland is a major concern owing to mostly fishery production. Anthropogenic pressure like grazing, overfishing, fragmentation of the wetland by fisherman by accumulating water hyacinths in the beel for business purposes are among major concerns