best relate to age. Additional categories were added as 

 necessary in 1991. These included: 



? - Rosettes or plants that had been recorded in the 

 previous year but were not relocated in the current year. 

 When present, possible causes of disappearance are noted. 



Gone - Plants that were recorded as dead in the previous 

 year, and which had decomposed or disappeared by the current 

 year. (For example: Plants that had flowered in 1989, were 

 recorded as dead in 1990 (dead flowering stalks were still 

 visible) , and as gone in 1991 (when stalks and leaves had 

 disappeared) . 



Grazed - Many of the rosettes, especially at the Belt Park 

 site, had been grazed. It was thought that this might have 

 an effect on the ability of the plant to produce and store 

 enough energy to eventually flower. Information on grazing 

 was recorded as follows. 



Grazed heavily - Plant was significantly reduced in 

 size, at least two leaves had been removed. 



Grazed - Plants that had a leaf or portion of a leaf 

 removed . 



Finally, general observations about the site and plants were 

 noted where possible. As before rosette=individual that has 

 only whorl (s) of leaves, flowering plants=individuals that 

 are reproductive. 



Raw data (1990-1991) recorded for each site are provided in 

 Section VI., Demographic Monitoring Data, pp. 14-23. 



RESULTS AND CONCLUSIONS: Plot data for the three sites are 

 summarized in Table 1, p. 5 (Russian Creek), Table 2, p. 7 

 (Kings Hill), and Table 3, p. 9 (Neihart) . Portions of this 

 information are also represented graphically in Figures 1, 

 2, and 3, pp. 6, 8 and 10, respectively. In the tables, 

 population growth rate (negative or positive) was calculated 

 as the change (+) in the number of individuals from year 1 

 to year 2, divided by the number of individuals present in 

 the plot in year 1, times 100. 



Population sizes decreased at Neihart and Russian Creek from 

 1990 to 1991, and increased substantially at Kings Hill. 

 The total number of individuals within the plots was reduced 

 at Neihart by 26 percent and at Russian Creek by 33 percent 

 between 1990 and 1991, while the number of individuals 

 increased at Kings Hill by 54 percent during the same time 

 period. In 1991, the density of plants varied from 0.18 



