Bonfring International Journal of Industrial Engineering and Management Science

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DIN, DIP, DIC AND SO4 Fluxes from the Neyyar River (Kerala) into the Receiving Coastal Waters

B. Baburaj, D. Padmalal, S.I. Remya, K. Maya and I. Lekshmi


Abstract:

Rivers are the major contributors of dissolved materials into the ocean realms. Among the dissolved components, the inorganic forms of nutrients received considerable significance in recent years, as they have a strong bearing on the productivity of the aquatic environments. Although many studies on dissolved nutrient transport are available for the major rivers, much attention has not been made in the small rivers having catchment area <10000 km2. The situation is rather worse in the case of the small rivers in the south western coast of India, especially along the Kerala coast. Therefore, an attempt has been made in this study to address the fluxes of dissolved inorganic carbon (DIC), nitrogen (DIN), phosphorous (DIP) and SO4 from one of the important small, mountainous rivers of Southern Kerala - the Neyyar river. On an average the main channel of the Neyyar river records an amount of 1.92 mg/l of DIC, 1065 μg/l of DIN, 158 μg/l of DIP and 6.54 mg/l SO4. The DIC, DIN, DIP and SO4 in the estuarine environment are 2.03 mg/l, 175 μg/l, 168 μg/l and 67.24 mg/1, respectively. The study reveals that distribution of these geochemical signals in the Neyyar river is function of the intensity of weathering, sedimentary and biologic processes operating in this fluvial system. Flux computation carried out as a part of this study reveals that the Neyyar discharges an amount 11000 kg of DIC, 2500 kg of DIN, 1000 kg of DIP and 500 kg of dissolved SO4 into the receiving coastal waters during summer season.

Keywords: Water sampling, Aquatic Environments, Coastal Waters

Volume: 2 | Issue: Special Issue on Geospatial Technology Development in Natural Resource and Disaster Management

Pages: 01-07

Issue Date: July , 2012

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