As the grazing intensity increased, Oryzopsis hymenoides density and basal area decreased, while Gutierrezia sarothrae density and foliar cover increased. Density and basal area of Hilaria jamesii were not greatly different between grazing intensities. Perognathus longimembris was captured the most out of the rodent species and exhibited a 50% reduction in abundance at the heavily grazed areas compared to lightly grazed and nongrazed areas. Peromyscus maniculatus was significantly more abundant at heavily grazed areas compared with lightly grazed and nongrazed areas. These results indicate that P. longimembris may be a "decreaser" under grazing pressure and P. maniculatus may be an "increaser" under grazing pressure in this habitat.
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