Temporal trends in amount and placement of conservation practices in the South Fork of the Iowa River watershed

Thomas B. Moorman (corresponding author) is a research microbiologist, David E. James is geographic information systems specialist, Jessica Van Horn (Beasley) and Sarah A. Porter are physical science technicians, and Mark D. Tomer is a research soil scientist, all with the USDA Agricultural Research Service at the National Laboratory for Agriculture and the Environment in Ames, Iowa.