Biogeomorphic feedbacks in the Southwestern USA: exploring the mechanisms of geomorphic change and the effectiveness of mitigation measures

David J Dean, U.S. Geological Survey, Grand Canyon Monitoring and Research Center, Flagstaff, AZ, United States, Rebecca M Diehl, University of Montana, Department of Geosciences, Missoula, MT, United States and David J Topping, US Geological Survey, Flagstaff, AZ, United States