Key points are not available for this paper at this time.
Jay D. McKendrick, George O. Batzli, K. R. Everett, John C. Swanson, Some Effects of Mammalian Herbivores and Fertilization on Tundra Soils and Vegetation, Arctic and Alpine Research, Vol. 12, No. 4, Patterns of Vegetation and Herbivory in Arctic Tundra: Results from the Research on Arctic Tundra Environments (RATE) Program (Nov., 1980), pp. 565-578
McKendrick et al. (1980) studied this question.