B 



Fig. 86. — Some important effects of grazing. A, Sugar Maple-Beech forest in 

 central Indiana, showing plentiful regeneration and litter; B, similar forest type 

 in same region but subjected to heavy grazing by cattle. In the latter instance 

 Grasses and a few unpalatable herbs have taken the place of the usual plants and 

 litter of the forest floor, while tree regeneration has been eliminated so that the 

 forest's life is jeopardized. (Reprinted with permission from R. F. Daubenmire, 

 Plants and Environment, copyright date 1947, John Wiley & Sons, Inc.) 



308 



