Assessing drivers of ecosystem change using qualitative land health assessments and erosion models Brandi Elizabeth Wheeler, M.Sc., New Mexico State University;Nicholas Webb, USDA-ARS Jornada Experimental Range;Brandon P. Edwards, Department of Biology, Carleton University, Ottawa, ON Canada;Akasha M. Faist, New Mexico State University;Jeffrey E. Herrick, USDA-ARS Jornada Experimental Range;