Laserfiche WebLink
Production <br />(Table 2) <br />Total average production was 845.8 Ibs per acre. Of this, 367.6 pounds were introduced annual and <br />biennial forbs and 249.8 pounds were native perennial cool season grasses. Native annual and biennial <br />forbs, introduced perennial forbs, and native perennial forbs contributed 98.1, 53.5, and 48.2 pounds per <br />acre respectively. Introduced annual grasses produced 19.6 pounds with introduced perennial cool <br />season grasses producing 8.9 pounds per acre. <br />Woody Plant Density <br />(Table 3) <br />Total average woody plant density in the 2006 Reclaimed Area was 1453 stems per acre and composed <br />entirely of native shrubs. The predominant species was big sagebrush (Artemisia tridentata) with 1229 <br />stems per acre. Mountain snowberry (Symphoricarpos rotundifolius) contributed 158.2 stems per acre to <br />the total. Antelope bitterbrush (Purshia tridentata) with 44.1 stems per acre. Saskatoon serviceberry <br />(Amelanchier alnifolia) and silver sagebrush (Artemisia cana) were also present, each with densities of <br />fewer than 15 stems per acre. <br />2011 RECLAIMED AREA <br />(Photographs 12 -18, Tables 4 -5) <br />Cover <br />(Table 4) <br />Introduced annual and biennial forbs were the predominant lifeform observed in the 2011 Reclaimed <br />Area, contributing 14.6 percent toward total all -hit vegetation cover. Of this, the majority (5.0 percent) <br />was Russian thistle (Salsola collina) with prickly lettuce (Lactuca serriola) and two -lobed speedwell <br />(Pocilla biloba) contributing 3.9 and 1.7 percent respectively. Introduced annual grasses were the second <br />most encountered lifeform, contributing 4.1 percent toward total all -hit vegetation cover. This total was <br />predominantly composed of wheat (Triticum aestivum) and cheatgrass (Bromus tectorum) at 2.3 and 1.7 <br />percent respectively. Native perennial cool season grasses contributed 3.4 percent to total first -hit <br />vegetation cover consisting predominantly of western wheatgrass (Pascopyrum smithii) with 1.1 percent. <br />Also observed in the area were bull thistle (Cirsium vulgare) with 0.4 percent cover and 57% frequency, <br />houndstounge (Cynoglossum officinale) with 0.29 percent cover and 71% frequency, and Canada thistle <br />(Cirsium arvense) with 0.14 percent cover and 29% frequency. <br />Total average vegetation cover, for first hits, was 24.9 percent. Total average vegetation cover, for all <br />hits, was 25.1 percent. Standing dead, litter, bare soil, and rock each had 3.3, 14.9, 56.1, and 0.9 percent <br />first hit cover, respectively. Average species density was 26.4 species per 100 sq.m. <br />7 <br />