Limnological Study of Gadchiroli Lake, Maharashtra, India using hydro-Sediment Chemistry and Sedimentary Diatoms

Authors

  • Sumedh K. Humane  Post Graduate Department of Geology, Rashtrasant Tukadoji Maharaj Nagpur University, Rao Bahadur D. Laxminarayan Campus, Law College Square, Nagpur, Maharastra, India
  • Samaya S. Humane  Post Graduate Department of Geology, Rashtrasant Tukadoji Maharaj Nagpur University, Rao Bahadur D. Laxminarayan Campus, Law College Square, Nagpur, Maharastra, India
  • Shruti Chalakh  Post Graduate Department of Geology, Rashtrasant Tukadoji Maharaj Nagpur University, Rao Bahadur D. Laxminarayan Campus, Law College Square, Nagpur, Maharastra, India

Keywords:

Sedimentary Diatoms, Water Quality, Trophic State, Gadchiroli Lake, Cyclotella meneghiniana , Aulacoseira granulata

Abstract

Diatom assemblages are indicators of lake condition and may be used to evaluate past lake water quality changes. The surface sediment samples along with the water samples were collected from the Gadchiroli Lake covering the complete stretch and were analyzed for the physicochemical parameters, geochemistry and sedimentary diatom assemblages. The spread of diatom species was strongly linked to various environmental parameters. The Total Alkalinity (TA), total dissolved salt, calcium hardness and magnesium hardness values evidently specify that currently the lake water is moderately hard to hard. The calcium concentration shows that the good portion of calcium has been deposited from the soil erosion. The concentrations of carbonates in the Gadchiroli Lake could have been increased due to enhanced human activities in and around the lake such as rapid urbanization, washing the clothes using the detergents etc. The concentrations of the Total Phosporous indicates fair to poor quality of the lake water. The total Nitrogen content points eutrophic condition of the lake. The other physicochemical parameters were well within the permissible limit. The overall hydrochemical analysis suggests that the lake water is deteriorated due to the increased anthropogenic activities. The higher concentration of SiO2, Al2O3 and Fe2O3 may be mainly due to the enhanced weathering of these rocks and soil in the watershed for the Gadchiroli Lake. The dominance of the centric diatoms such as Aulacoseira granulata and Cyclotella meneghiniana indicates that water from the Gadchiroli Lake was more eutrophic with increased productivity and high conductivity.

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International Journal of Scientific Research in Science and Technology

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Published

2018-04-30

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Volume 4, Issue 5, March-April-2018

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Research Articles

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[1]
Sumedh K. Humane, Samaya S. Humane, Shruti Chalakh, " Limnological Study of Gadchiroli Lake, Maharashtra, India using hydro-Sediment Chemistry and Sedimentary Diatoms , International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011, Volume 4, Issue 5, pp.1659-1670, March-April-2018.