stand: A contiguous group of trees sufficiently uniform in age class distribution, composition, 

 and structure, and growing on a site of sufficiently uniform quality, to be a distinguishable unit. 

 (Silvicultural Working Group 1993) 



Stocking: An indication of growing space occupancy relative to a pre-established standard. 

 (Silviculture Working Group 1993) 



Streamside Management Zone (SMZ): The zone around a streambank, from 50' to 300' wide, 

 where certain management activities are limited or prohibited to minimize unfavorable impacts 

 on aquatic and riparian environments. The Streamside Management Zone Law (77-5-301 MCA) 

 prohibits certain forest practices along stream channels. 



Threatened species: Species which are likely to become "endangered species" within the 

 foreseeable future throughout all or a significant portion of their range are designated threatened 

 species in the Federal Register by appropriate Department Secretaries. (Schwarz et al. 1976) 



Thinning: A cutting made to reduce stand density of trees primarily to improve growth, 

 enhance forest health, or to recover potential mortality. (Silviculture Working Group) 



Trust mandate: The requirement that State trust lands be managed to provide income for 

 schools. 



Watershed: The area drained by a river or river system. 



Wetlands: Areas that are permanently wet, or intermittently water covered, such as swamps, 

 marshes, bogs, muskegs, potholes, swales, glades, and overflow land of river valleys. Large, 

 open lakes are commonly excluded, but many kinds of ponds, pools, sloughs, holes, and bayous 

 may be included. (Veatch and Humphrys 1966 In: Schwarz et al. 1976. 



Glossary References 



Keystone Center. 1991. Biological diversity on federal lands: report of a Keystone policy 

 dialogue. Keystone, CO: The Keystone Center. 



Monnig, E; J. Byler. 1992. Forest health and ecological integrity in the Northern Rockies. USDA 

 Forest Service, Northern Region, FPM Report 92-7. 



Pfister, R.D.; B.L. Kovalchik; S.B. Amo; R.C. Presby. 1977. Forest habitat types of Montana. 

 USDA Forest Service General Technical Report rNT-34. 174p. 



Schwarz, C.F.; E.G. Thor; G.H. Eisner. 1976. Wildland planning glossary. USDA Forest Service 

 General Technical Report PSW-13. Pacific Southwest Forest and Range Experimental Station, 

 Berkeley, CA. 



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