2010-04-05_REPORT - C1994082 - Laserfiche WebLink

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2007 RECLAIMED AREA (Photographs 10-12) • Cover (Table 7) Introduced annual and biennial forbs were the predominant lifeform observed in the 2007 Reclaimed Area, contributing 33.1 percent all-hit cover. Of this, bushy knotweed (Polygonum ramosissimum) and prickly lettuce contributed 9.4 and 9.2 percent all-hit cover, respectively. Native perennial cool season grasses were the second most encountered lifeform with 7.4 percent all-hit cover. Within this group, western wheatgrass and slender wheatgrass were most common, having 2.8 and 2.7 percent all-hit cover, respectively. Introduced annual grasses (6.2 percent all-hit cover) were the third most common lifeform with wheat (Triticum aestivum) comprising the majority with 4.0 percent all-hit cover. Total average vegetation cover, for first hits, was 50.1 percent. Total average vegetation cover, for all hits, was 53.8 percent. Standing dead, litter, bare soil, and rock each had 0.3, 20.1, 28.4, and 1.1 percent cover, respectively (first hits). Average species density was 24.9 species per 100 sq.m. Production • (Table 8) Total average production was 2132.3 Ibs per acre. Woody Plant Density (Table 9) Total average density of woody plants was 1420.5 stems per acre, entirely composed of native shrubs. Big sagebrush was the dominant species contributing 1399.0 stems per acre. Four other native shrubs were present including Wood's rose (Rosa woodsii), mountain snowberry, Gambel's oak (Quercus gambelii), and Saskatoon serviceberry. Reference Areas ASPEN REFERENCE AREA (Photographs 13-16) Cover (Table 10) Native perennial forbs were the predominant lifeform observed in the Aspen Reference Area, contributing 62.4 percent all-hit cover consisting predominately of mountain bluebells (Mertensia • cilliata) with 17.2 percent all-hit cover. Native shrubs were the second most encountered lifeform 8