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GLOSSARY 



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Administrative road use 



Road use that is restricted to DNRC 

 personnel and contractors or for 

 purposes such as monitoring, forest 

 improvement, fire control, hazard 

 reduction, etc. 



Airshed 



An area defined by a certain set of 

 air conditions; typically, a 

 mountain valley in which air 

 movement is constrained by natural 

 conditions such as topography. 



Appropriate conditions 



Describes the set of forest 

 conditions determined by DNRC to 

 best meet the SFLMP objectives. The 

 4 main components useful for 

 describing an appropriate mix of 

 conditions are covertype 

 proportions, age class 

 distributions, stand structural 

 characteristics, and the spatial 

 relationships of stands (size, 

 shape, location, etc.), all assessed 

 across the landscape. 



Bald eagle primary-use area 



An area where it is assumed that 75 

 percent of the foraging, resting, 

 and associated behaviors occur. 



Basal area 



A measure of the number of square 

 feet of space occupied by the stem 

 of a tree. 



Best fvianagement practices (^^V^) 



Guidelines to direct forest 

 activities, such as logging and road 

 construction, for the protection of 

 soils and water quality. 



Biodiversity 



The variety of life and its 

 processes, including the variety of 

 living organisms, the genetic 

 differences among them, and the 

 communities and ecosystems in which 

 they occur. 



Board foot 



144 cubic inches of wood that is 

 equivalent to a piece of lumber 1 

 inch thick by 1 foot wide by 1 foot 

 long. 



Canopy 



The upper level of a forest 

 consisting of branches and leaves of 

 the taller trees. 



Canopy closure 



The percentage of a given area 

 covered by the crowns, or canopies, 

 of trees. 



Cavity 



A hollow excavated in trees by birds 

 or other animals. Cavities are used 

 for roosting and reproduction by 

 many birds and mammals. 



Coarse down woody material 



Dead trees within a forest stand 

 that have fallen and begun 

 decomposing on the forest floor. 



Co-dominant tree 



A tree that extends its crown into 

 the canopy, receiving direct 

 sunlight from above and limited 

 sunlight on its sides. One or more 

 sides are crowded by the crowns of 

 other trees . 



