15 



Table 1. NLmber of frequency pin hits (percent cover) for bare soil and cryptogamic soil crust and the 

 number of Arab is fecunda plants rooted in each of the two substrates. Chi -square values are for the null 

 hypothesis that the distribution of A^ fecunda is independent of substrate. 



Study Site 



Percent Percent A^ fecunda A^ fecunda 

 Soil Crust Bare Soil in Crust in Soil 



Birch Creek 



Charley's Gulch 



Lime Gulch North 



Lime Gulch South 



26.89 



30.10 



29.77 



28.27 



<0.001 



<0.001 



<0.001 



<0.001 



