1. Earth, Atmospheric, and Planetary Sciences; Purdue University; 550 Stadium Mall West Lafayette IN 47907 USA
2. Blackland Research and Extension Center; Texas A&M AgriLife; 720 E Blackland Rd. Temple TX 76502 USA
3. Department of Agricultural and Biological Engineering; Purdue University; 225 South University St. West Lafayette IN 47907 USA
4. Agricultural Research Service, Grassland, Soil and Water Research Laboratory; U.S. Department of Agriculture; 808 E Blackland Rd. Temple TX 76502 USA
5. Department of Geology; Baylor University; 97354 One Bear Place Waco TX 76798 USA
6. Departments of Ecosystem Sciences and Management and Biological and Agricultural Engineering; Texas A&M University; 1500 Research Parkway College Station TX 77845 USA
7. Agricultural Research Service, Southeast Watershed Research Laboratory; U.S. Department of Agriculture; P.O. Box 946 Tifton GA 31793 USA
8. Department of Computational Landscape Ecology; Helmholtz Centre for Environmental Research - UFZ Leipzig; Permoserstr. 15 04318 Leipzig Germany