National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Lakes supply water for irrigation, drinking, fisheries etc and thus have significant economic and recreational values in order to determine impact of human activities on fresh water Ecosystem. In the present study, 7 lakes of Mandya district classified based on the trophic state of Physico-Chemical and biological, chlorophyll ‘a’. Nygaar’s trophic state and water quality index (WQI). Each objects can be simplified by the correlation matrix and attempts to distinguish logical groupings, phosphate, chlorophyll ‘a’, and physic chemical parameter. The correlation indicates that all lakes are Oligotrophic in nature and the most significant parameter was Chlorophyll ‘a’ and Phosphorus. Trophic state index based on Phosphorous in 6 lakes indicated that the category of oligotrophic lakes tending to become mesotrophic and one lake indicated that only oligotrophic. If the lakes were classified on the basis of Nygaar’s trophic state index indicates that 6 lakes were in a state of oligotrophism and were fast tending become Eutrophic. The Water quality index (WQI) developed for rating of water are indicate 6 lakes were far from being pure and are unsustainable for drinking purpose except Thonnur lake. This study indicated that ideal means by which progress integrated water resources management can be monitored. Thus, the data of this findings can be used for the scientific management and restoring polluted lakes and its eutrophication.
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