Sediment-water interactions and mineral cycling in reservoirs.

Abstract

At the end of an anaerobic incubation, the overlying water more closely resembles the composition of sediment interstitial water rather than aerobic surface waters. Dissolved oxygen depletion results in remobilization of metals and nutrients from sediment into the overlying water. Addition of organic matter to the overlying water resulted in enhanced release rates of Fe and Mn. It is postulated that Fe and Mn trapped in the sediment surface layer under aerobic conditions were reduced and released to the water column under anaerobic conditions. -from Authors