Farming for human health and a smaller dead zone: How agricultural conservation practices, climate change, and subsurface drainage intensification affect nitrate loads in Iowa

Bonnie M. McGill1, Amy J Burgin1, W. D. Hively2, Terry Loecke1, Awoke Teshager Dagnew3 and Peter Beeson4, (1)University of Kansas, Kansas Biological Survey, Lawrence, KS, United States, (2)USGS, Lower Mississippi Gulf Science Center, Beltsville, MD, United States, (3)Environmental Consulting and Technology, Inc., Ann Arbor, MI, United States, (4)Roger Tory Peterson Institute of Natural History, Jamestown, United States