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• Creek; at an average width of about 30 to 40 feet ,the area occupied is less than one acre. <br />Approximately 8 acres of a drier phase of the Mesic Drainage Type is located in the vicinity of Pond <br />009 (see discussion of the vegetation of the pond 009 area later in this report). Within the small area <br />along Dry Creek, five cover, production, and woody plant density samples were placed. This vegetation <br />type is primarily dominated by trees, shrubs, and graminoids. Shrubs contributed 30.4 percent cover <br />or 33.9 percent relative cover (Table 3). The most abundant shrub species by far was mountain <br />snowberry, with 20.0 percent cover. The only other shrubs that made even modest contributions to <br />cover were serviceberry (Amelanchier alnifolia), basin big sagebrush (Artemisia tridentata var. <br />tat ), gooseberry (Ribes inerme), and Woods' rose (Rosa woodsiil. Other common, if not <br />particularly abundant, species were silver sagebrush (Artemisia canal, rubber rabbitbrush <br />(CC~sothamnus nauseosus), hawthorn (Crataegus rivularis), chokecherry (Prunus virciniana var. <br />melanocaroa), and golden currant (Ribes aureuml. Trees present were confined to box elder (~ <br />e o ,which accounted for 20.1 percent relative cover. Cover by box elder was very uneven, <br />mostly confined to the extreme southern end of the area. <br />• The most important graminoids present were the introduced red top (Acrostis alba), and the native <br />silver sedge (Carex Oraecracilis), beaked sedge (Carex utriculatal, fowl mannagrass (Glyceria striata), <br />and Agassiz bluegrass. Other common but less abundant graminoids included slender wheatgrass <br />(AgroRyron trachycaulum), smallwing sedge (Carex microotera), Nebraska sedge (Carex nebrascensis), <br />spikesedge (Eleocharis macrostachval, basin wildrye (Elvmus cinereus), and Baltic rush (Juncus <br />c i ssp. al' u <br />Though not overall dominants, perennial torbs were substantial contributors to total cover, comprising <br />14.7 percent relative cover (Table 3). The most abundant introduced perennial (orb, accounting for 7.6 <br />percent relative cover, was the noxious weed Canada thistle (Cirsium arvense), a common adventive <br />along streams of the region. Among native (orb species, the 7.1 percent relative cover was rather <br />evenly distributed among many species, including Pacific aster, water hemlock (Cicuta douglasiil, field <br />mint (Meniha arvensis), cutleaf coneflower (Rudbeckia laciniata), few-flowered false Solomon's seal <br />(Smilacina stellata), Missouri goldenrod ($olid~go missouriensis), and stinging nettle. Other common <br />but not abundant perennial (orbs included western yarrow, leafy aster (Aster }oliaceousl, and American <br />vetch (Vicia americans). <br />. Introduced annual and biennial }orbs were not particularly abundant, but were often present in small <br />12 <br />