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    Seasonal variations in the water quality and antibiotic resistance of microbial pollution indicators in the Mandovi and Zuari estuaries, Goa, India

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    Envi_Monit_Asses_194_194a.pdf (787.6Kb)
    Envi_Monit_Asses_194_194a_Supp.csv (10.67Kb)
    Date
    2022
    Author
    Toraskar, A.D.
    Manohar, C.S.
    Fernandes, C.L.
    Ray, D.
    Gomes, A.D.
    Ajit, A.
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    Abstract
    The two adjacent estuaries of the rivers Mandovi and Zuari, along the Goa coast in the central west coast of India, are a large complex aquatic system hosting diverse natural habitats. The water quality in these habitats is affected by various anthropogenic activities as they are extensively used for transportation, fisheries and various recreational activities. In the present study, changes in the water quality and levels of microbial pollution during the pre-monsoon, monsoon and post-monsoon seasons were determined. The water quality index was estimated based on the parameters: temperature, salinity, pH, dissolved oxygen, biochemical oxygen demand and nutrients. The seasonal changes in the microbial pollution load were also assessed based on the abundance of pollution indicator organisms and their resistivity towards multiple antibiotics. Results show that the water quality index status was 'poor' in the pre-monsoon and post-monsoon seasons and it was 'good' only in the monsoon period. Levels of pollution indicator organisms determined show that the counts were the highest in the pre-monsoon season, which reduced in the monsoon and further declined during the post-monsoon season.
    URI
    https://doi.org/10.1007/S10661-021-09679-7
    https://drs.nio.org/drs/handle/2264/8821
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