Figure 1. Density (plants/.^) of Arabis fecunda plants at four study sites in 

 1987-1992. 



19S7 1988 1959 1990 1991 1992 

 Yeor 



Figure 2. Growth of Arabis fecunda popu 



1992 (see Methods for definition of population growth) 



lations at four study sites in 1987- 



-60 



1 [ T 



1988 1989 1990 1991 1992 



Yeor 



