APPENDIX 1: SOIL PROFILES 



Soil Profile at the Abies lasiocarpa,Clintonia uniflora 



Habitat Type Plot 



Oi 11-9 cm (4.3-3.5 in). 



Oe 9-0 cm (3.5-0 in). 



E" 0-6 cm (0-2 in). Grayish brown (lOYR 5/2) silt 



loam, light gray (lOYR 7/1) dry; weak very fine to 

 medium crumb structure; very friable (moist), 

 nonsticky and nonplastic (wet); many very fine 

 and fine, common medium, and few coarse roots; 

 noncalcareous; slightly acid; clear smooth 

 boundary. 



Bo 6-31 cm (2-12 in). Dark brown (7. SYR 4/4) silt 

 loam, pink (7. SYR 7/4) dry; weak very fine to fine 

 and moderate medium crumb structure; very fria- 

 ble to friable (moist), sticky and plastic (wet); 

 common fine and few medium to coarse roots; 

 noncalcareous; slightly acid; abrupt smooth 

 boundary. 



2Bt 31-75 cm (12-30 in). Dark gray (lOYR 4/1) silty 

 clay loam, light gray (lOYR 7/1) dry; moderate 

 very fine to fine subangular blocky structure; fria- 

 ble (moist), slightly sticky and plastic (wet); com- 

 mon fine roots; clay skins common thin to com- 

 mon thick on ped faces; noncalcareous; slightly 

 acid; abrupt smooth boundary. 



3C 75-80 cm (30-32 in). Grayish brown (lOYR 5/2) 

 sandy loam, light gray (lOYR 7/1) dry; moderate 

 very fine to fine subangular blocky structure; 

 very friable to friable (moist), slightly sticky and 

 slightly plastic (wet); very few smooth ped faces 

 (possibly stress cutans); noncalcareous; slightly 

 acid; abrupt smooth boundary. 



4Btb 80-97+ cm (32-38+ in). Reddish brown (lOYR 

 5/3) silty clay, light gray (lOYR 7/1) dry; strong 

 coarse angular blocky and massive structure; 

 very firm (moist), very sticky and plastic (wet); 

 few fine roots; clay skins common thin to com- 

 mon thick on ped faces; noncalcareous; slightly 

 acid. 



Location: SEV^ of SWV4 of Sec. 36, T. 17 N., R. 13 W. 



Classification; (Andeptic) Eutric Glossoboralf, coarse- 

 loamy over fine, mixed, frigid 



Parent material: Ash over lacustrine sediments 



Physiographic position: On stream terrace, in slight con- 

 cavity at the foot of the side slope 



Elevation: 4,400 feet 



Slope: — 4 percent 



Remarks: I called horizon Bo ash because it had a dis- 

 tinctive color and boundary and a high silt content 

 and apparently low bulk density (felt light and fluffy) 

 compared to the underlying horizon. I have assigned 

 this soil to the Glossoboralf great group because it 

 probably has a frigid temperature regime and less than 

 60 percent base saturation in the argillic horizon. How- 

 ever, it has no albic tongues into the argillic horizon, 

 characteristic of a Glossoboralf, and furthermore, hori- 

 zon Bo is apparently ash. Therefore, I have assigned 

 this soil to a new subgroup; (Andeptic) Eutric Glos- 

 soboralf. Colors are for the moist soil unless otherwise 

 indicated. 



Soil Profile at the Abies lasiocarpa/Clintonia uniflora- 

 Vaccinium caespitosum Phase Habitat Type Plot 

 Oi 6-4.5 cm (2.4-1.8 in). 

 Oe 4.5-0 cm (1.8-0 in). 



A 0-10 cm (0-4 in). Dark yellowish brown (lOYR 

 3/4) cobbly sandy loam, light yellowish brown 

 (lOYR 6/4) dry; weak very fine to fine crumb struc- 

 ture; very friable (moist), nonsticky and nonplastic 

 (wet); many very fine to fine and few medium roots; 

 noncalcareous; very strongly acid; 85 percent angu- 

 lar gravel to cobbles; clear wavy boundary. 



CA 10-45 cm (4-18 in). Strong brown (7.5YR 4/6) cob- 

 bly sand, brown (7.5YR 5/4) dry; very weak very 

 fine crumb and single grain structure; loose (moist), 

 nonsticky and nonplastic (wet); many very fine to 

 fine and few medium roots; noncalcareous; very 

 strongly acid; 95 percent angular gravel to cobbles; 

 abrupt wavy boundary. 



C 45-80+ cm (18-31+ in). Strong brown (7. SYR 

 4/6) cobbly sand, strong brown (7. SYR 5.5/6) dry; 

 single grain; loose (moist), nonsticky and nonplastic 

 (wet); common very fine to fine and few medium 

 roots; noncalcareous; 90 percent angular gravel to 

 cobbles. 



Location: SW'a of SEV4 of Sec. 20, T. 16 N., R. 12 W. 

 Classification: Typic Udorthent, sandy-skeletal, mixed, 

 frigid 



Parent material: Glacial outwash 



Physiographic position: Broad, flat terrace (about 



1/2 mile wide) 

 Elevation: 4,200 feet 

 Slope: — 3 percent 



Remarks: Colors are for the moist soil unless otherwise 

 indicated. 



Soil Profile at the Abies lasiocarpaA^accinium caespitosum 



Habitat Type Plots 



Oi 3.5-3 cm (1.4-1.2 in). 



Oe 3-0 cm (1.2-0 in). 



E 0-2, cm (0-1 in). Dark grayish brown (lOYR 



4/2) cobbly fine sandy loam, light gray (lOYR 

 7/2) dry; very weak very fine crumb structure; 

 loose (moist), nonsticky and slightly plastic 

 (wet); common very fine and few fine roots; non- 

 calcareous; strongly acid; 10 percent angular to 

 subrounded gravel, 10 percent subrounded cob- 

 bles; abrupt smooth boundary. 



Bo 2-16 cm (1-6 in). Dark yellowish brown (lOYR 

 4/4) cobbly silt loam, light yellowish brown 

 (lOYR 6/4) dry; moderately weak fine crumb 

 structure; very friable (moist), shghtly sticky 

 and slightly plastic (wet); common very fine and 

 fine, few coarse roots; noncalcareous; slightly 

 acid; 10 percent angular to subrounded gravel, 

 10 percent subrounded cobbles; clear smooth 

 boundary. 



Bo2Cl 16-31 cm (6-12 in). Yellowish brown (lOYR 



S/4) stony silt loam, very pale brown (lOYR 7/3) 

 dry; very weak very fine crumb and moderate 

 very fine to fine subangular blocky structure; 

 very friable and friable (moist), slightly sticky 



36 



