. Habitat characteristics of the Silver Lake Mule Deer Range. Botany Oregon Lake County Ecology; Mule deer Oregon. Pinus ponderosa/ Arctostaphylos patula I Festuca idahoensis Ecosystem Physical Description Site. — This ecosystem occupies approximately 10,000 acres within the study area, primarily on the slopes of 7,000-foot Hager Mountain but with a small amount occurring on Dead Indian Mountain which is near the north end of Winter Ridge. The typical ecosystem occurs at elevations from 4,900 to 6,500 feet and on slopes from 5 to 25 percent. At the higher elevations and steep slopes it occurs
. Habitat characteristics of the Silver Lake Mule Deer Range. Botany Oregon Lake County Ecology; Mule deer Oregon. Pinus ponderosa/ Arctostaphylos patula I Festuca idahoensis Ecosystem Physical Description Site. — This ecosystem occupies approximately 10,000 acres within the study area, primarily on the slopes of 7,000-foot Hager Mountain but with a small amount occurring on Dead Indian Mountain which is near the north end of Winter Ridge. The typical ecosystem occurs at elevations from 4,900 to 6,500 feet and on slopes from 5 to 25 percent. At the higher elevations and steep slopes it occurs on northwest to east aspects, whereas it may be found on others at lower elevations and on moderate slopes. Vegetation. — Dominant species which typify this ecosystem are Pinus ponderosa, Arctostaphylos patula, and Festuca idahoensis. In some areas Ceanothus uelutinus becomes an important shrub component. In the tree layer, Abies concolor varies from a codominant position with P. ponder- osa to a minor component. Basal area of all vegetation averages percent for the ecosystem. Grasses make up a much smaller part (34 percent) of the composition here than in any other ecosystem. Due to a small sample size, data in the table should be used cautiously. Soil. — The soil is a well-drained loam varying from 25 to 30 inches in depth with an A horizon averaging 11 inches and a B horizon averaging 15 inches. Texture is loam for the A horizon, and the B horizon ranges from silty clay loam to clay loam. The pH ranges from to in the A hori- zon and from to in the B. Root concentration is in the upper 14 inches. Percentage of rock on the solum surface and in the solum averages less than 5 percent. Litter cover and bare ground average 95 and 3 per- cent, respectively. Discussion Ecosystem. — The occurrence of Abies concolor in the Pinus ponderosa stand identifies this community as a successional stage of the P. ponderosa-A. concolor/Festuca idahoensis ecosystem. An
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