Physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysis
The current study deals with the physicochemical characterization, temporal variability and trophic state evaluation of a post glacial mountain lake in eastern Himalaya during the period of 2014-2016. Notable seasonal variations are recorded for physicochemical parameters of lake water. The values f...
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2018-10-01
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| Series: | Global Journal of Environmental Science and Management |
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| author | S. Nayek S. Gupta K.K. Pobi |
| author_facet | S. Nayek S. Gupta K.K. Pobi |
| author_sort | S. Nayek |
| collection | DOAJ |
| description | The current study deals with the physicochemical characterization, temporal variability and trophic state evaluation of a post glacial mountain lake in eastern Himalaya during the period of 2014-2016. Notable seasonal variations are recorded for physicochemical parameters of lake water. The values for electrical conductivity, total suspended solids, total dissolved solids, total alkalinity and Chloride are higher during the rainy season. Concentrations of total phosphorous (136.78±29.14 µg/L), total nitrogen (7177.78±1346.70 µg/L) and Chlorophyll-a (38.54±21.67 µg/L) in lake water are distinctly higher than the recommended standards for eutrophic condition of lake/surface water. Application of multivariate tools such as cluster analysis and principal component analysis reveals that ionic constituents of lake water are majorly associated to the geogenic and exogenic factors, with minor seasonal influences. Trophic state indices based on water transparency (3.15±1.57), total phosphorous (74.72±3.39), total nitrogen (82.64±2.83) exhibit hypertrophic nature of lake water; while trophic state index for chlorophyll-a indicate eutrophic condition. Deviations between Trophic state indices (TSI<sub>CHLa</sub>-TSI<sub>SD</sub>: -14±7.88, TSI<sub>CHLa</sub>-TSI<sub>TP</sub>: -9.17±3.33, and TSI<sub>CHLa</sub>-TSI<sub>TN</sub>: -17.56±5.29) infer that the nutrients (phosphorus and nitrogen) are not limiting factors for the algal biomass, and non-algal components such as suspended solids soil/sediment particles affects the light attenuation in the monitored lake. The observations reveal that trophic condition of monitored lake is in alarming stage. Therefore, measures should be taken on urgent basis in order to intercept the increasing trend in eutrophication, and for the restoration of water quality and integrated lake ecosystem. |
| format | Article |
| id | doaj-art-e4ebed5c81c5462b96bc6e3ccbfbc74e |
| institution | Kabale University |
| issn | 2383-3572 2383-3866 |
| language | English |
| publishDate | 2018-10-01 |
| publisher | GJESM Publisher |
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| series | Global Journal of Environmental Science and Management |
| spelling | doaj-art-e4ebed5c81c5462b96bc6e3ccbfbc74e2025-02-02T01:08:05ZengGJESM PublisherGlobal Journal of Environmental Science and Management2383-35722383-38662018-10-014445146410.22034/gjesm.2018.04.00632470Physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysisS. Nayek0S. Gupta1K.K. Pobi2Department of Environmental Science, Amity Institute of Applied Sciences, Amity University, Kolkata, IndiaDepartment of Environmental Science, The University of Burdwan, Golapbag, Bardhaman, West Bengal, IndiaDepartment of Chemistry, Asansol Engineering College, Asansol, West Bengal, IndiaThe current study deals with the physicochemical characterization, temporal variability and trophic state evaluation of a post glacial mountain lake in eastern Himalaya during the period of 2014-2016. Notable seasonal variations are recorded for physicochemical parameters of lake water. The values for electrical conductivity, total suspended solids, total dissolved solids, total alkalinity and Chloride are higher during the rainy season. Concentrations of total phosphorous (136.78±29.14 µg/L), total nitrogen (7177.78±1346.70 µg/L) and Chlorophyll-a (38.54±21.67 µg/L) in lake water are distinctly higher than the recommended standards for eutrophic condition of lake/surface water. Application of multivariate tools such as cluster analysis and principal component analysis reveals that ionic constituents of lake water are majorly associated to the geogenic and exogenic factors, with minor seasonal influences. Trophic state indices based on water transparency (3.15±1.57), total phosphorous (74.72±3.39), total nitrogen (82.64±2.83) exhibit hypertrophic nature of lake water; while trophic state index for chlorophyll-a indicate eutrophic condition. Deviations between Trophic state indices (TSI<sub>CHLa</sub>-TSI<sub>SD</sub>: -14±7.88, TSI<sub>CHLa</sub>-TSI<sub>TP</sub>: -9.17±3.33, and TSI<sub>CHLa</sub>-TSI<sub>TN</sub>: -17.56±5.29) infer that the nutrients (phosphorus and nitrogen) are not limiting factors for the algal biomass, and non-algal components such as suspended solids soil/sediment particles affects the light attenuation in the monitored lake. The observations reveal that trophic condition of monitored lake is in alarming stage. Therefore, measures should be taken on urgent basis in order to intercept the increasing trend in eutrophication, and for the restoration of water quality and integrated lake ecosystem.http://www.gjesm.net/article_32470_186913df8447a0ee01d2650fdaba1f04.pdfLimiting factorsMountain LakeMultivariate analysisPhysicochemical characterizationTemporal variationsTrophic state index (TSI) |
| spellingShingle | S. Nayek S. Gupta K.K. Pobi Physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysis Global Journal of Environmental Science and Management Limiting factors Mountain Lake Multivariate analysis Physicochemical characterization Temporal variations Trophic state index (TSI) |
| title | Physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysis |
| title_full | Physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysis |
| title_fullStr | Physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysis |
| title_full_unstemmed | Physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysis |
| title_short | Physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysis |
| title_sort | physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysis |
| topic | Limiting factors Mountain Lake Multivariate analysis Physicochemical characterization Temporal variations Trophic state index (TSI) |
| url | http://www.gjesm.net/article_32470_186913df8447a0ee01d2650fdaba1f04.pdf |
| work_keys_str_mv | AT snayek physicochemicalcharacteristicsandtrophicstateevaluationofpostglacialmountainlakeusingmultivariateanalysis AT sgupta physicochemicalcharacteristicsandtrophicstateevaluationofpostglacialmountainlakeusingmultivariateanalysis AT kkpobi physicochemicalcharacteristicsandtrophicstateevaluationofpostglacialmountainlakeusingmultivariateanalysis |