G. POPULATION ECOLOGY 



1. BIOLOGICAL INTERACTIONS 



a. COMPETITION: This species appears to be 

 restricted to mineral soils that are also not 

 heavily vegetated. It is possible that L. 

 bicolor var. bicolor is shade-intolerant. 

 Interspecific competition does not appear to 

 be a factor in this species distribution. 



b. HERBIVORY: Unknown. 



H. LAND OWNERSHIP 



1. Berray Trail (001) - U.S. Forest Service, Kaniksu 

 National Forest, managed by the Kootenai National 

 Forest. 



II. ASSESSMENT AND MANAGEMENT RECOMMENDATIONS 



A. THREATS TO CURRENTLY KNOWN POPULATIONS: There are 

 currently no observed threats to the Berray Trail (001) 

 L. bicolor var. bicolor subpopulations. 



B. MANAGEMENT PRACTICES AND RESPONSE: Not known. 



C. RECOMMENDATIONS FOR MAINTAINING VIABLE POPULATIONS: 



The locations of the known subpopulations of L. bicolor 

 var. bicolor on the Kootenai National Forest are in 

 areas that are unlikely to be affected by most 

 management practices, and the subpopulations are 

 probably self-maintaining. 



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D. RECOMMENDATIONS FOR FURTHER ASSESSMENT: The Berray 

 Trail (001) population needs no further assessment. 

 However, Lomatium bicolor var. bicolor was observed on 

 only one peak in the Bull River valley. Although not 

 extensive, there is more habitat on Forest Service 

 lands in the valley that may support populations of 

 this species. 



E. SUMMARY: During surveys of the Bull River valley in 

 northwestern Montana in 1989, one population of 

 Lomatium bicolor var. bicolor was found on the Kootenai 

 National Forest, Sanders County, Montana. The Berray 

 Trail (001) population represents a range extension of 

 approximately 130 miles northwest of the nearest known 

 populations of L. bicolor var. bicolor . which are 

 located in the Bitterroot Mountains of Montana. 

 Although not extensive, there is more habitat that may 



