Quantifying nitrogen inputs to the Choptank River estuary
Cathleen J Hapeman1, Gregory Mccarty2, Ali M. Sadeghi2, W. D. Hively3, Judith M Denver4, Megan W Lang5, Peter M Downey2 and Clifford P. Rice6, (1)USDA Beltsville Agricultural Research Center, Beltsville, United States, (2)USDA ARS, Hydrology and Remote Sensing Laboratory, Beltsville, MD, United States, (3)USGS, Lower Mississippi Gulf Science Center, Beltsville, United States, (4)USGS, Dover, DE, United States, (5)USDA-ARS, Silver Spring, MD, United States, (6)USDA ARS, Sustainable Agricultural Systems Laboratory, Beltsville, MD, United States
