Are Iron-Phosphate Minerals a Sink for Phosphorus in Anoxic Black Sea Sediments?
Figure 7
The P mass balance of the Black Sea with values in x 107 mol P/yr.
The fluxes related to the Sea of Marmara are excluded as their effect is minimal [35]. The Black Sea is divided into two areas: the shelf with generally oxic bottom waters (<200 m water depth) and the basin with anoxic bottom waters (>200 m water depth). The relative P fractions are based on values below 5 cm depth to limit the effect of short-term burial on total P burial. Based on this balance, 11×107 mol P is added to the water column on a yearly basis.