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A. Badarudeen ¹, D. Padmalal ¹, K. Sajan ²

Affiliations
1 Centre for Earth Science Studies, Thuruvikkal P.O., Akkulam,Trivandrum - 695 031, IN
2 Department of Marine Geology and Geophysics, School of Marine Sciences, Cochin University of Science and Technology, Kochi - 682 016, IN

Abstract

Distributions of organic carbon (OC) and total phosphorus (P) in the sediments of three mangrove ecosystems located at Veli, Kochi and Kannur areas, southwest coast of India are described. The mangrove sediments of Kannur contain comparatively high concentration of DC (4%) than that of Veli (2.6%) and Kochi (3.7%). Total P records the highest concentrations in Kochi (av. 0.395%) compared to Veli (0.055%) and Kannur (av. 0.323%) mangroves. However, their distribution does not yield any specific pattern with respect to landward, intermediate and shallow water profiles. Statistical analysis of OC and P contents against the various causative factors stresses the role of particle size in regulating their distributional pattern in mangrove environments.

Keywords

Sedimentology, Organic Carbon, Phosphorus, Mangrove Environments, Southwest Coast.

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M. Thamban ¹, K. Reghunadh ¹, K. Sajan ¹

Affiliations
1 Marine Geology Division, School of Marine Sciences, Cochin University of Science and Technology, Cochin - 682 016, IN

Abstract

The surficial mangrove sediments in the estuarine course of Eranholi river were sampled at 21 locations and analysed for the determination of organic matter, iron and manganese in 2 mm size fraction of the sediments. The study indicated that the these constituents are apparently controlled by the spatial variation of the physico - chemical factors of the estuary such as pH and Eh, base exchange and adsorption characteristics and the texture of the sediments, tidal influence and proximity to the mangrove vegetation in the prevailing estuarine environment.

Keywords

Geochemistry, Marine Sediments, Mangrove Environment, Tellicherry, Kerala.

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