☆ Research was funded by USDA-NIFA, Rangeland Re 2009-38415-20265); and Western Sustainable Agricultu program (Project Number SW10-073). ⁎ Correspondence: Leslie M. Roche, Department of P University of California, Davis, CA, 95616, USA. E-mail address: [email protected] (L.M. Roche). http://dx.doi.org/10.1016/j.rama.2015.03.011 1550-7424/© 2015 Society for Range Management. Publis Article his...