Phosphorus Memory by Soils and Sediments

FIGURE 9.69 A schematic showing the influence of phosphorus memory in wetlands on lag time for recovery or for the system to reach alternate stable condition. 

FIGURE 9.70 Phosphorus flux from a flooded agricultural land in central Florida. 

This phosphorus flux from internal memory is a major concern, when intensively used agricultural lands are converted to wetlands. The phosphorus retention capacity of soils can be improved 

FIGURE 9.72 Effects of C a materials (CaCOj, Ca(OH)2, CaMg(C03)2, and mixture of CaCOj and CafOHlj) on immobilizing soluble P in the floodwater. (From Ann et al., 2000a.) 

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