. Habitat characteristics of the Silver Lake Mule Deer Range. Botany Oregon Lake County Ecology; Mule deer Oregon. Pinus ponderosa I Purshia tridentata/ Festuca idahoensis Ecosystem: Carex rossii Phase Physical Description Site. — This ecosystem has the same gross site characteristics as the inus ponderosa /Purshia tridentata /Festuca idahoensis ecosystem which will be referred to as the parent ecosystem. Vegetation. — The vegetation differs from that of the parent primarily by exhibiting only half as many P. ponderosa stems per acre, less crown cover and basal area of the same species, more P
. Habitat characteristics of the Silver Lake Mule Deer Range. Botany Oregon Lake County Ecology; Mule deer Oregon. Pinus ponderosa I Purshia tridentata/ Festuca idahoensis Ecosystem: Carex rossii Phase Physical Description Site. — This ecosystem has the same gross site characteristics as the inus ponderosa /Purshia tridentata /Festuca idahoensis ecosystem which will be referred to as the parent ecosystem. Vegetation. — The vegetation differs from that of the parent primarily by exhibiting only half as many P. ponderosa stems per acre, less crown cover and basal area of the same species, more P. tridentata, and a decided dominance of Carex rossii in the grass-forb layer. The tall shrub Arctostaphylos patula is present in trace amounts here but is absent in the parent, and the mat-forming shrub Ceanothus prostratus is present as a trace in the parent but absent here. Changes in the forb complement were primarily in composition with one exception, the addition of the perennial Apocynum androsaemifolium in this phase. Soil. — The soil in this phase, like that in the parent, is tentatively clas- sified as a Tournquist loam. However, it is shallow (22 inches) compared with the parent (30 inches). Textural differences of the B horizon are small, tending to be heavier in the phase and with more stone and gravels throughout the profile than that of the parent. A representative profile is: 01 1-0. Pine litter. Al 0-2 inches. Brown ( YR 5/4) dry, dark reddish brown (5 YR 3/2) moist; loam; weak, very fine granular; loose; very friable, slightly sticky, slightly plastic; pH ; roots abundant. A3 2-11 inches. Dark reddish brown (5 YR 5/4) dry, dark reddish brown (5 YR 3/4) moist; light clay loam; weak, fine granular; slightly hard; friable, slightly sticky, slightly plastic; pH ; roots abundant. Bl 11-15 inches. Dark reddish brown (5 YR ) moist; clay loam; weak, fine subangular blocky; firm, sticky, plastic with thin patchy clay flows on the ped surfaces; pH 6.
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