1. Departamento de Geografia, Universidade Estadual do Centro-Oeste, Irati, Brazil
2. Grupo de Investigación GeoAmbiental, Universidad de Extremadura, Cáceres, Spain
3. Department of Natural Sciences, Dickinson State University, Dickinson, North Dakota, USA
4. Soil Erosion and Degradation Research Group, Department of Geography, Valencia University, Valencia, Spain
5. Instituto de Geomorfología y Suelos, Department of Geography, University of Málaga, Málaga, Spain
6. Physical Geography, Trier University, Trier, Germany