Figure 1 . — Boise study 



area, Boise National ' ■ " 



Forest, Boise County, 'f 

 Idaho. 



Each fall, an estimate was also made of the percent of the entire canopy made up 

 by the two sample branches. For example, if the total twig growth on the two branches 

 of a particular shrub was 300 inches, and the estimator believed that these two branches 

 made up 10 percent of the entire shrub, then there might be about 3,000 linear inches 

 of twig growth on that shrub. 



The percent dead canopy of each sample shrub was estimated to the nearest 10 

 percent prior to topping, and was reestimated each year thereafter. 



Figure 2. — Sawtooth study 

 area. Sawtooth National 

 Forest, Twin Falls 

 County, Idaho. 



3 



