Nutrient limitation of phytoplankton in three tributaries of Chesapeake Bay: Detecting ecosystem recovery following nutrient reductions

Qian Zhang1, Thomas R Fisher2, Claire Buchanan3, Anne B Gustafson2, Renee Karrh4, Rebecca R Murphy1, Jeremy M Testa5, Richard Tian1 and Peter J Tango6, (1)University of Maryland Center for Environmental Science, USEPA Chesapeake Bay Program, Annapolis, MD, United States, (2)University of Maryland Center for Environmental Science Horn Point Laboratory, Cambridge, MD, United States, (3)Interstate Commission on the Potomac River Basin, Rockville, MD, United States, (4)Maryland Department of Natural Resources, Annapolis, MD, United States, (5)University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States, (6)U.S. Geological Survey, USEPA Chesapeake Bay Program, Annapolis, MD, United States