FIG. 8-12 Plant succession In 

 abandoned fields In Virginia, 

 (a) annual herbs invading old 

 cornfield, (b) broom-sedge 

 grass, (c) invasion of young pine 

 trees. 



FIG. 8-13 The Tillamook Burn 

 in coniferous forest in Oregon, 

 1944 (courtesy U.S. Forest 

 Service). 



118 Habitats, communities, succession 



