652 Ecology 



mm TUNMA [|ALP'J^^] 



lllllll •n»4CM-C0H>FtM« FoBtST 



CCOTONC (sot-Aicnc Rgu^ 

 ^■B CONIFEROUS FOQCST 



CoMirnous ■ Dcaouous 



fSStSTJ ECOTONE 

 (SuB-C«NtDIAN roSCSl) 



[IJJ C»NlfDMUS F68EJT- 

 GSMiLANO CCorONC 



(AV^N Padklano) 



DECIOIKWS FOREST 



k^^^^^^ oak-pine suscumax 



(Ccoro«) 



PiNC SueCUMAX 



lft?A*l Dtciowus FoetsT- 



C«ASSUNO CC9T0NC 



(Oak RACKtANCJ) 



GRASSLAND 



SACC SufiCLViAX 



Ocscer Scfiue 

 SiecLvux 



Creosote- BUSH Otseur 



[fMl Saccbrush 



COUTAL ChAPARSAL 



PlNON-JONlPER- 

 INTCRIOR CHAPARCAL 



Hoist Coniferous 



FOREST 



Coastal -Montane 



roSCST CCOTONC 



Fig. 211. — The biomes of North America. Transitional areas are termed eco- 

 tones. (From Pitelka, 1941, The American Midland Naturalist.) 



