METHODS 



Description of Study Sjtes 



Field planting was done on two areas on the St. Joe National Forest near Avery, 

 Shoshone County, Idaho. Most planting was done at Cougar Creek, about 6 miles south of 

 Avery, at an elevation of approximately 5,000 ft. Here, the north-facing moist site 

 has an average slope of approximately 45 percent. The dry site test on an opposing 

 slope in the same subdrainage has a southwest aspect and a slope of 30 percent. Tliis 

 area was logged in 1965 and burned by wildfire in July of 1966 just before the first 

 fall planting. The original stand was a mixture of Engelmann spruce, western larch, 

 subalpine fir (Abies lasioaarpa (Hook.) Nutt.), Douglas-fir, lodgepole pine (Firms 

 contorta Dougl. var. murrayana (Grev. 5 Balf.) Engelm.), western white pine, and western 

 redcedar {T}iuja pliaata Donn) . The moist, north-facing slope is representative of tlie 

 Thuja/Paahistima habitat tyjie and the drier southwest slope of the Abies lasioaarpa/ 

 Xerophyllum habitat type (Daubenmire and Daubenmire 1968) . On each planting site, there 

 is a residual of standing fire-killed trees. Soils on the Cougar Creek area are derived 

 from quartzitic and argillaceous rock of the Belt series and surface admixtures of loess 

 and volcanic ash. 



During the third year of the study, because of lack of space in the Cougar Creek 

 area, planting was shifted southwest 2-1/2 miles to a divide between Sisters and Webfoot 

 Creeks at an elevation of 5,200 ft. Here, the dry site has a south exposure, a 45- 

 percent slope, and the Abies lasiocarpa/Xerop}iyllum type. The moist site lias a nortli 

 exposure, a 50-percent slope, and the Thuja/Paohistima type. Soils on both sites are 

 decomposed granites, with surface admixtures of loess and volcanic ash. This area was 

 logged in 1965. The south exposure was slashed and prescribe-burned in 1966. The noiLh 

 slope was treated similarly in 1967. The first and second fall plantings in 1968 were 

 on the Webfoot area, but heavy snows made it necessary to use the Cougar Creel area for 

 the third fall planting. The first and second spring plantings of 1969 were on tlie 

 Webfoot area, but the third was shifted back to the Cougar Creek area. 



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