Figure 4 

 Gulch in 

 1989-92. 



Survivorship of uneven-age cohort (A) at Birch Creek and Charleys 

 ]^989_91 and (B) at Charleys Gulch, Lime Gulch and Vipond Park in 



1 r I I I 



19S7 19S3 19S9 1990 1991 



yeor 



B 



403 

 350 

 300 

 250 

 200 

 150 

 100 

 50 



1990 1991 1992 



Yeor 



