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9. Current land ownership and management responsibility. 



A. General nature of ownership: U.S. Forest Service 

 and private lands. 



B. Specific landowners (Montana) : 



1. Lewis and Clark National Forest 

 1101 15th Street North 



Great Falls, MT 59403 



2. Helena National Forest 

 301 S. Park, Drawer 10014 

 Federal Office Building, Room 334 

 Helena, MT 59626 



3. Privately owned (owner not known) . 



C. Management responsibility: Same as ownership given 

 above. 



D. Easements, conservation restrictions, etc.: A 



population of C. lonqistylum (Paine Gulch 014) is 

 located within the Paine Gulch Proposed Research 

 Natural Area, Lewis and Clark National Forest. 



10. Management practices and experience. 



A. Habitat management. 



1. Review of past management and land use 

 experiences. 



a. This taxon: Much of the habitat for C. 

 lonqistylum is grazed for a portion of the 

 year by cattle or sheep, and several sites 

 have been logged in the past (pers. obs.). 

 Grazing does not appear to limit this 

 species, and may in fact open more 

 potential habitat. 



b. Related taxa: Rhinocyllus conicus has 

 infested numerous other native thistles 

 across in the U.S., but the extent of the 

 weevils impact on these unintended hosts 

 is not known (Turner et al. 1987) . 



c. other ecologically similar taxa: 



Rhinocyllus conicus was introduced as a 

 biological control for musk thistle 

 (Carduus nutans ) , but also infests Cirsium 

 lonqistylum . The impact of the weevil on 



