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Environmental Sciences

Virginia Commonwealth University

Theses and Dissertations

2012

Phosphorus

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Sources And Fates Of Nutrients In The Tidal, Freshwater James River, William Isenberg Apr 2012

Sources And Fates Of Nutrients In The Tidal, Freshwater James River, William Isenberg

Theses and Dissertations

Tidal freshwater reaches of estuaries may play an important role in mitigating nutrient fluxes from watersheds to the coastal zone due to their location at the interface between riverine and estuarine systems. We developed annual N and P budgets for the tidal, freshwater James River over 4 calendar years (2007-2010) taking into account riverine inputs at the Fall Line, local points sources (including CSO events), ungagued inputs, riverine outputs, and tidal exchange. The tidal freshwater James River experiences high areal loading rates of TN (383 mg/m2/d) and TP (70 mg/m2/d) due to the combined effects of large watershed area and …