Publication Details

Inorganic Nutrient Fluxes Across the Sediment-water of Shallow Tropical Wetland

The aim of this study was to investigate the benthic nutrient fluxes in a tropical wetland of Chini Lake, Malaysia that has been infested by submerged Cabomba furcata vegetation. The role of this internal loading has been known to contribute to nutrient pool and enrichment of lakes worldwide. Despite its importance, the measurements of internal nutrient fluxes have not been taken into account in other studies in this Chini lake system. An experiment was performed in this shallow floodplain wetland measuring inorganic nitrogen and soluble reactive phosphate fluxes from intact cores collected in the pelagic areas. Pelagial nutrient fluxes showed dissolved inorganic nitrogen (DIN) fluxes were directed from the sediment toward the water column at most sites while dissolved reactive phosphate fluxes were low. Mean DIN was 0.75±0.55 mmol/m/d. C. furcata dominated sites were associated with silt, iron and organic carbon content (p