46 USGS/BRD/ITR-2000-0012 



Castle Rock 



Green Rock 



Figure 2.5. Changes in whole- ^ 

 colony counts of common murres at 

 selected colonies in northern 

 California, 1979-1995 (see I 

 Appendixes C and D). At Castle -j= 

 Rock, 1 979-1 982 counts were not 1 

 considered to be comparable to 

 1 986-1 989 counts and are separated is - 

 by a dashed line. A decline between 

 these periods has not been inferred f 

 (see text). 



IS- 



False Cape Rocks 



Cape Vizcaino 



1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 



1978 1980 1982 1984 1986 1988 1990 1992 1994 19% 



Year 



Northern California 





 E 



z. 



100 n 

 90 

 80 - 

 70 - 

 60 - 

 50 - 

 40 - 

 30 - 

 20 - 

 10 - 



Figure 2.6. Changes in whole-colony counts of 

 common murres in northern California, 1 979-1 989, 

 excluding the Castle Rock colony (see Appendix 

 H). 



1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 



Year 



