322 THE STUDY OF PLANT COMMUNITIES * Chapter XII 



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FIG. 171. Illustrations of blue grama-oak savannah range that tell their 

 own story of good and poor range management. (Above) "One of the finest 

 demonstrations of range and livestock management in the southwest!' (Be- 

 low) Range depleted by overuse and poor management. Note differences in 

 condition of cattle, amount of forage, ground cover, and erosion.— U. S. 

 Forest Service. 



