*Chris S. Renschler and Tom Cochrane, USDA-ARS National Soil Erosion Research Laboratory, 1196 Soil Building, West Lafayette, IN 47907-1196, USA; Jon Harbor; Dept. of Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907, USA; Bernd Diekkrüger, Geographical Institutes, Bonn University, Meckenheimer Allee 166, 53115 Bonn, Germany. *Corresponding author: rensch@buffalo.edu ;...