50 



s 



ui 



Large stream 



2 I 3 



Community type 



Figure 1 . The natural characteristics of the riparian zone change with stream size. 

 In low- and mid-order streams the linl<s between the riparian forest and the stream 

 are strong. In large rivers the links are not aas strong in the main channel butthey 

 do remain strong in the secondary channel. KEY: (1) active channel. (2) riparian 

 zone, (3) zone of influence, (4) uplands. Note that (2) and (3) make up the 

 complete riparian zone of influnce (Naiman 1992). 



