Disturbances from mining activities could be 

 detrimental to A^ fecunda populations. Any proposed 

 mining activity in the area of populations should be 

 reviewed and disturbances curtailed or mitigated. 



In order to determine whether Arabis fecunda deserves 

 status as a threatened or endangered species, it is 

 essential to know the extent of genetic differentiation 

 between threatened populations in Ravalli County _ and 

 the unthreatened populations in Beaverhead and Silver 

 Bow counties. This information is critical for 

 developing a management plan for A^ fecunda. Isozyme 

 studies failed to answer this question (Leeper et al., 

 in press) . Genetic studies employing more powerful 

 nuclear DNA methods should be used to determine the 

 genetic distances among selected populations throughout 

 the range of the species. Furthermore, quantitative 

 genetics studies to determine the degree of 

 differentiation for traits that may be under strong 

 local selection should be conducted. 



D. 



INTERESTED PARTIES 



Office of Endangered Species 

 Attn. James Miller 

 U.S. Fish and Wildlife Service 

 Denver, CO 80225 



Office of Endangered Species 

 Attn. Dale Harms 

 U.S. Fish and Wildlife Service 

 Federal Bldg. , P.O. Box 10023 

 Helena, MT 59626 



U.S. Forest Service 

 Northern Region 

 Attn. Steve Shelly 

 P.O. Box 7669 

 Missoula, MT 59807 



Beaverhead National Forest 

 Attn. Dan Svoboda 

 420 Barrett St. 

 Dillon, MT 59725 



U.S. Bureau of Land Management 



Attn. Don Heinze 



P.O. Box 36800 



Billings, MT 59107-6800 



Land Management Bureau 

 Department of State Lands 

 1625 11th Ave 

 Helena, MT 59620 



The Nature Conservancy 

 Montana Field Office 

 Attn. Bernie Hall 

 3 2 N. Ewing 

 Helena, MT 59601 



Dr. Thomas Mitchell-Olds 



Division of Biological 



Sciences 



University of Montana 



Missoula, MT 59812 



Deerlodge National Forest 

 Attn. John Joy 

 P. 0. Box 400 

 Butte, MT 59703 



Lisa Roe 

 531 Spencer 

 Helena, MT 59601 



III. INFORMATION SOURCES 



