The purpose of this project is to quantify 1) the exchange of water and nutrients between Florida Bay and the adjacent mangrove wetlands and 2) quantify the processes that influence this exchange. This information will continue to help us to understand and predict the effect of changing freshwater inflow to Florida Bay on the status of the mangrove wetland and the availability of nutrients in Florida Bay. The specific objective of this subcontract amendment and continuation work plan is to directly quantify the flux of nutrients into and out of the Taylor River mangrove basin for three years.