Selective forces exerted by vertebrate herbivores on plants

Trends Ecol Evol. 1989 Apr;4(4):115-7. doi: 10.1016/0169-5347(89)90062-1.

Abstract

The question of whether herbivory can benefit plants remains controversial. A series of papers on the effects of lesser snow geese grazing on grasses in northern Canada is throwing new light on this problem.