Digital Commons Network^™

The Influence Of Seawater And Sulfate Reduction On Phosphate Release From Tidal Wetland Soils In The St. John’S River, Florida, Asher Williams

UNF Graduate Theses and Dissertations

Climate change and increasing sea level elevation are predicted to increase salinity in estuarine tidal wetlands in the Southeastern United States. Since much of the ecosystem function in these areas is predicated upon salinity regimes, many fundamental changes are likely to occur as a result. The influence of salinity and SO4 2- reduction on PO4 3- release from tidal wetland soils was evaluated along a salinity gradient at three sites in The St. John’s River, Florida using both field and laboratorybased methods. Porewater was sampled over the course of 10 months to determine ambient levels of SO4 2- and PO4 …