Abstract
The present study evaluated the physico-chemical properties of water in an ecologically sensitive floodplain wetland of India, Kapla Beel, and analysed the status of its water quality. Water samples were collected monthly from December, 2019 to November, 2020 to examine the physico-chemical parameters using standard methods, results of which were compared with National (Bureau of Indian Standards) and International (World Health Organization) drinking water standards. Calculated values of turbidity, total hardness (TH), chemical oxygen demand (COD) and Alkalinity exceeded the acceptable limits. A distinct seasonal variation among the water quality parameters was observed during the study period. Parameters viz. pH, dissolved oxygen (DO), biological oxygen demand (BOD), alkalinity and chloride showed the highest values during the winter season; while two variables i.e. magnesium and nitrate showed maximum values in the premonsoon season. In the monsoon season, peak values were recorded by seven physico-chemical parameters, viz. water temperature, conductivity, turbidity, total dissolved solids, sodium, potassium and sulphate. On the other hand, variables such as COD, Calcium and TH showed the highest concentration in post-monsoon season. Pearson’s correlation coefficient depicted a significant correlation among the parameters. One-way ANOVA showed that seasonal difference in physicochemical parameters was statistically significant for water temperature, turbidity, TDS, alkalinity, potassium, sodium, sulphate, pH, nitrate, calcium, DO, BOD, conductivity (p < 0.05). To determine the overall water quality status of the study area and to examine the potentiality of its water for different uses, the Water quality index rating indicates ‘poor’ water quality status of the wetland.
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Baruah, D., Baruah, P.P. Water quality monitoring of Kapla Beel: an ecologically sensitive floodplain wetland of Eastern Himalaya Biodiversity Hotspot. Int J Energ Water Res (2022). https://doi.org/10.1007/s42108-022-00196-y
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DOI: https://doi.org/10.1007/s42108-022-00196-y