Bai et al. studied the range condition and vegetation composition and characteristics to determine the effects of grazing on the southern Saskatchewan grassland region. Grazing altered species composition, diversity, and evenness relative to the controls at most sites, while species richness was not affected. Species diversity and evenness tended to increase at sites when range condition increased from fair to good, and decreased when range condition increased from good to excellent. Grazing tended to reduce the standing dead materials, litter cover, grass biomass and height of live vegetation. The Shannon's diversity index was positively correlated with forb biomass, but not with biomass of any other group or combination.
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