1. Blackland Research and Extension Center; Texas A&M AgriLife; 808 E. Blackland Road Temple Texas 76502
2. Grassland, Soil and Water Research Laboratory; USDA Agricultural Research Service; Temple Texas 76502
3. Earth, Atmospheric, and Planetary Sciences; Purdue University; West Lafayette Indiana 47907
4. Southeast Watershed Research Laboratory; USDA Agricultural Research Service; Tifton Georgia 31794
5. Department of Geology; Baylor University; Waco Texas 76798
6. Department of Computational Landscape Ecology; Helmholtz Centre for Environmental Research-UFZ; 04318 Leipzig Germany
7. Department of Ecosystem Sciences and Management; Texas A&M University; College Station Texas 77843