Laserfiche WebLink
gianthyssop), 0.78 Dover and 19% frequency, and Lathyrus leucanthus <br />(aspen peavine), 0.4% cover and 17.2% frern»ncy. <br />The mixed brush type/aspen subtype oras the most productive type studied <br />with a dry cteight production of 1818.9 lbs/acre as co:~ared to 1103.3 <br />lbs/acre for upland sagebrush. The shrub stratum accounted for 75.3% <br />of the total production, while the forbs and grasses accounted for <br />15.7 and 9.0%, respectively. Snowberry (500.5 lbs/acre), Gambol oak <br />(250.4 lbs/acre) and sagebrush (241.9 lbs/acre) were the Host productive <br />shrubs. Of the herbaceous understory, Esiogonum umbellatum var. m3jus <br />suffer (suffer wildbuckwheat), 40.2 lbs/acre, nettleleaf gi.anthyssop, <br />36.8 lbs/acre, and slender wheatgrass, 28.4 lbs/acre, evidenced the <br />most productivity. Percent rroisture content averaged 50.1% for the <br />grass stratum and 64.9% for the forb stratum. <br />Average height of shrub species measured in the mixed brush type/aspen <br />subtype was 178.3 cm. The largest species was Gambol oak with an <br />average shrub height of 346.3 can followed by serviceberry (280.5 ~ <br />/ and chokecherry (138.7 cm). Snowberry was the smallest shrub species <br />\• with an average shrub height of 63.0 cm. <br />Age-height data indicate that the species containing the oldest <br />individual in the type was Gambol oak (average = 71.4 years ± 10). <br />The youngest species was snavberry (average = 9.9 years ± 5). Shrubs <br />camrising the mixed brush type appeared to be older than those in the <br />upland sagebrush type and younger than those comprising the aspen <br />subtype shrub stratum (Table 13). <br />Aspen Subtype. The aspen vegetation subtype comprised 112 acres or 4.1% <br />of the total lands on the study area. Nbst of the subtype was located <br />along south and east facing draws at the upper elevations. The subtype <br />was characterized by dense stands of aspen averaging 594.5 trees/acre <br />with a shrub understory comprised mainly of muntain snowberry, co[rtron <br />c}nkecheny and Gambol oak. The herbaceous tmderstory was dominated <br />by western yarrow, nettleleaf gianthyssop and Kentucky bluegrass. <br />(. <br />-57- <br />