Abstract
Investigations on Parakrama Samudra sediments were carried out during August and September 1979. Main characteristics of the sediment were determined, oxygen uptake rates of undisturbed sediment cores and oxygen consumption rates of the lake water were measured. The results provide evidence that most of the primarily produced organic matter is mineralized in the pelagic zone. Decomposition processes are distinctly higher in the pelagic zone compared to the benthic zone (ratio 9:1). This is explained by: (a) wind- and thermally induced currents resuspending the uppermost layers of sediment and (b) the high temperature of the lake water enhancing mineralization processes of easily decomposable organic matter.
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Newrkla, P. (1983). Sediment characteristics and benthic community oxygen uptake rates of Parakrama Samudra, an ancient man-made lake in Sri Lanka. In: Schiemer, F. (eds) Limnology of Parakrama Samudra — Sri Lanka. Developments in Hydrobiology, vol 12. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7281-0_11
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DOI: https://doi.org/10.1007/978-94-009-7281-0_11
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