Habitat type 



The place or type of site where a plant or 

 animal naturally or normally lives and grows. 



Hazard reduction 



The abatement of a fire hazard by processing 

 logging residue with methods such as separa- 

 hon, removal, scattering, lopping, crushing, 

 piling and burning, broadcast burning, bury- 

 ing, and chipping. 



Hiding cover 



Elk - Vegetation capable of hiding 90% of a 

 standing adult elk from human view at a 

 distance of 200 feet. 



Historical forest condition 



The condition of the forest prior to settlement 

 by Europeans. 



Intermediate trees 



A characteristics of certain tree species which 

 allows them to survive in relatively low light 

 conditions, although they may not thrive. 



Interdisciplinary team 



A team of resource specialists brought together 

 to analyze the effects of a project on the envi- 

 ronment. 



Irretrievable commitment of resources 



Resources, such as harvested timber or other 

 renewable natural resources, that are lost for a 

 period of time. A stand of trees that is cut has 

 been irretrievably lost (as opposed to irrevers- 

 ibly lost) because the stand can regenerate. 



Irreversible commitment of resources f 



Loss of resources that cannot be reversed 

 except perhaps in the extreme long term, such 

 as minerals, historical or archaeological re- 

 sources; or vegetation and habitat lost to 

 permanent roads. Irreversible also refers to 

 the loss of future options. 



Landscape 



An area of land with interacting ecosystems. 



Latilong 



A roughly rectangular area defined by one 

 degree of latitude and one degree of longitude. 

 Locations for species occurrences are often 



recorded and mapped by this system of rows 

 and columns of latilong "boxes". 



Mitigation measure /^ 



An action or policy designed to reduce or 

 prevent detrimental effects. '"• 



Moving-window analysis 



A computer-based method that, in this EIS, is 

 used to quantify the area influenced by roads 

 in a study area. Starting with the pixel in the 

 upper left comer of the computerized subunit 

 map, the computer calculates how many nailes 

 of road exist within a 1-square-mile "window" 

 around that pixel. It moves to the next pixel 

 and repeats the process until the road density 

 is calculated in a 1-square-mile area around 

 every pixel in the study area. The number and 

 percentage of pixels in the study area that fall 

 into different road density classes are then 

 calculated by the computer. Based on research 

 studying the effects of roads on grizzly bears, 

 the effects of open roads are measured by the 

 percentage of the pixels in the study area that 

 have at least LO mile of open road in the 

 surrounding 1-square-mile window. The 

 effects of total roads (open, gated, barricaded, 

 bermed but not brushed, etc.) are measured by 

 the percentage of pixels in the study area that 

 have at least 2 miles of open or restricted roads 

 in the surrounding 1-square-mile window. 



Multistoried stands . 



Timber stands with two or more distinct 

 stories. r^i: 



Nest site area (bald eagle) 



The area in which human activity or develop- 

 ment may stimulate abandonment of the 

 breeding area, affect successful completion of 

 the nesting cycle, or reduce productivity. It is 

 either mapped for a specific nest, based on 

 field data, or, if that is impossible, is defined as 

 the area within a _-mile radius of all nest sites 

 in the breeding area that have been active 

 within 5 years. 



No-action alternative 



The option of maintaining the status quo and 

 continuing present management activities 

 and/or not implementing the proposed 

 project. 



Glossary 



G-3 



