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Inventi Impact - Water & Environment

Articles

  • Inventi:ewe/20927/16
    SEASONAL DYNAMICS OF ENVIRONMENTAL AND NUTRIENT VARIABLES OF VELLAR ESTUARY, SOUTHEAST COAST OF INDIA
    N Rajesh, V Bharathidasan, G Mahadevan, P Murugesan*

    In the present study the physical and nuIn the present study the physical and nutrients characteristics of Vellar estuary were studied during May 2014 to April 2015. Four stations were selected based on salinity gradient and the environmental parameters such as temperature, dissolved oxygen, salinity, pH, TSS, turbidity and nutrients (nitrite, nitrate, inorganic phosphors, total nitrogen and reactive silicate) were recorded seasonally in the Vellar estuary. The correlation of all the parameters was done to know the interrelationship of the physico-chemical parameters. The maximum, minimum, mean and standard deviation values of water temperature was from 27.3 to 35.1, 30.4±1.79°C, pH 7.3 to 8.2, 7.7±0.100, salinity 20.2 to 34, 29.5±2.5 psu, dissolved oxygen 5.56 to 8.71, 5.8±0.35 μmg/l, biological oxygen demand 0.8 to 2.8, 1.7±0.1 ml/l, total suspended solid 60.00 to 176.00, 129.13±34.35 ppm and turbidity 4.51 to 8.31, 6.6±0.8 NTU. The higher and lower values of nutrients parameters such as ammonia 0.47 to 1.14, 0.73±0.095 μmo/l, nitrite 0.5 to 1.8, 0.9±0.13 μmol/l, nitrate 3.33 to 5.62, 4.36±0.20 μmol/l, total nitrogen 21.5 to 29.2, 25.1±0.70 μmol/l, inorganic phosphorus 0.0134 to 1.135, 1.27±0.28 μmol/l, total phosphorus 1.0 to 2.1, 1.6±0.09 μmol/l and silicate 17.1 to 72.9, 42.9±5.81 μmol/l fluctuated significantly. The water quality determines the diversity of flora and fauna of an area and therefore regular monitoring of physico-chemical parameters is essential to know the health of an aquatic ecosystem.trients characteristics of Vellar estuary were studied during May 2014 to April 2015. Four stations were selected based on salinity gradient and the environmental parameters such as Temperature, Dissolved Oxygen, Salinity, pH, TSS, Turbidity and nutrients (Nitrite, Nitrate, Inorganic Phosphors, Total Nitrogen and Reactive Silicate) were recorded seasonally in the Vellar estuary. The correlation of all the parameters was done to know the inter-relationship of the physico-chemical parameters. The maximum, minimum, mean and standard deviation values of water temperature was from 27.3 to 35.1, 30.4±1.79°C, pH 7.3 to 8.2, 7.7±0.100, Salinity 20.2 to 34, 29.5±2.5 psu, Dissolved Oxygen 5.56 to 8.71, 5.8±0.35 µmg/l, Biological Oxygen Demand 0.8 to 2.8, 1.7±0.1 ml/l, Total Suspended Solid 60.00 to 176.00, 129.13±34.35 ppm and Turbidity 4.51 to 8.31, 6.6±0.8 NTU. The higher and lower values of nutrients parameters such as Ammonia 0.47 to 1.14, 0.73±0.095 µmo/l, Nitrite 0.5 to 1.8, 0.9±0.13 µmol/l, Nitrate 3.33 to 5.62, 4.36±0.20 µmol/l, Total Nitrogen 21.5 to 29.2, 25.1±0.70 µmol/l, Inorganic Phosphorus 0.0134 to 1.135, 1.27±0.28 µmol/l, Total Phosphorus 1.0 to 2.1, 1.6±0.09 µmol/l and Silicate 17.1 to 72.9, 42.9±5.81 µmol/l fluctuated significantly. The water quality determines the diversity of flora and fauna of an area and therefore regular monitoring of physico-chemical parameters is essential to know the health of an aquatic ecosystem.

    How to Cite this Article
    N Rajesh, V Bharathidasan, G Mahadevan et al. Seasonal Dynamics of Environmental and Nutrient Variables of Vellar Estuary, Southeast Coast of India. Inventi Impact: Water & Environment, 2017(2):68-76, 2017.
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