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• Table A-3 Aspen <br />1. Date sampled: October 1976 <br />2. Location: Hayden Gu]-ch, Routt County, Colorado <br />3. Elevation: 7,640 feet <br />r 4. Slop=: 5-100 <br />5. Aspect: North <br />6. Physiography: P}ountainous <br />- 7. Soil parent material: Williams Fork formation (sandstone, silt- <br />stone, mudstone acid shale) <br />8. Special ~nvironmsntal features: The soil surface of the aspen <br />stand has been much disturbed by the northern pocket gopher, <br />Thomolh~s talpoides. Domestic cattle, Bos bos, have grazed the <br />grasses, forbs and shrubs; and elk, Cervus canadensis, have <br />frequently eaten the bark of the aspen as evidenced by the <br />ntm~rous scars. Sapsuckers, Spt~yrapicus sp., have drilled <br />many holes into the aspen. <br />9. Vegetation <br />~ a. Trees <br /> <br />~ <br />Species Max Age A1ax Ht # trees/qd € of all <br /> (Yrs) (m) (375m2) trees <br />Populus tremuloides 69 11 155 100 <br />Total -- -- 155 100 <br /> <br />Species Repro Diameter size classes in dm <br /> < Zrn 0-.5 .5-1 1-2 2-3 3-4 Total >lm <br />Populus tremuloides 5 GO 46 16 7 1 130 <br />Standing dead 19 2 4 25 <br />• Age/size class 23 91 69 <br />A-7 <br />