Assessment of Nitrogen Loads to Aquatic Systems




Patwardhan AS
Donigian AS

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Estimates of the contributions of atmospheric nitrogen deposition to Chesapeake Bay, Galveston Bay, and Tampa Bay are reported. The estimates are based on a refinement of a methodology developed by the Environmental Defense Fund in a 1988 study of Chesapeake Bay. The three-embayment study employed a spreadsheet methodology that produced estimates of nitrogen loadings from various nitrogen sources found in each of the study areas. Sensitivity analysis showed that atmospheric deposition has a significant effect on the nitrogen loadings delivered to the aquatic systems. More than 40% of the total nitrogen loads to the three systems resulted from nitrogen deposition




68A Environmental Pollution & Control: Air Pollution & Control, 68D Environmental Pollution & Control: Water Pollution & Control, 99F Chemistry: Physical & Theoretical Chemistry, Acid rain, Aquatic ecosystems, Chesapeake Bay, Data analysis, Data collection, Deposition, Environmental impact assessments, Environmental protection, Estimates, Galveston, Galveston bay, Loading, Methodology, Nitrogen, Sensitivity analysis, Sources, Tampa Bay, United States, Water pollution sources, Water quality