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

David James Dean, US Department of Interior, U.S. Geological Survey, Grand Canyon Monitoring and Research Center, Southwest Biological Science 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