APPLIED ECOLOGY 



347 



the biological knowledge of habitat, vegetation, and wildlife that 

 must be learned to manage other refuges and ultimately the gen- 

 eral program of wildlife conservation. Other refuges provide the 

 testing grounds for management procedures as knowledge accu- 

 mulates. 



/.>- r+T* 



*&m 



, ** < ***r 



:.«*? 



FlG. 185. An unsightly, eroding road cut in Illinois and its stable appear- 

 ance three years after planting with trees that blend with topography and 

 native vegetation.— (7. 5. So/7 Conservation Service. 



