TABLE 3. Summary of life history monitoring data for Cirsium 



hookerianum at Neihart, Little Belt Mountains, Lewis and 

 Clark National Forest, 1990-1991. (Percentages are rounded 

 up or down to the nearest whole number.) 



NEIHART (Elevation 6960 ft) 



Plot radius 15 ft (A. 6 m) 



Observation Date 



1990/07/30 



1991/08/01 



Total # of current 

 year rosettes 

 and plants 



Percentage change from the 

 previous year 



New recruits (as a percent 

 of all plants) 



Density (plants/m ) 



# small rosette plants 

 (as a % of al I plants) 



# medium rosette plants 

 (as a % of all plants) 



a large rosette plants 

 (as a % of all plants) 



# plants at 

 rosette stage 



(7. of plants at rosette 

 stage) 



# plants flowering 



(percent of plants flowering) 



24 (17%) 



(0%) 



mean it of heads 

 (open or unopened) 

 per flowering plant 

 (1 SD, n) 



14.6 + 5.8 

 n=24 



Total # rosettes 

 observed to be dead 

 in 1991 



Total # of rosettes 



not relocated and presumed dead 



54 



Total # dead or not relocated 

 rosettes; (as a percentage 

 of all live plants present in 

 the previous year) 



57 (40%) 



Total # of plants 



that had flowered in the 



previous year and are now dead 



Total # of plants not 



relocated that had flowered in the 



previous year and are presumed dead 



17 



Total number of dead or not relocated 

 (flowering and rosette) plants present; 

 (as a percentage of all live plants 

 present in the previous year) 



81 (57%) 



