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l J Table 11. Cover Data -Sagebrush Reference Area, Seneca IIW Mine, SCC, Routt Co., CO - 2003 PLANT SPECIES AVERAGE COVER FREQUENCY (%) (°k) RELATIVE VEGETATION AVERAGE COVER COVER-ALL (%) (%) Page 2 of 4 RELATIVE VEGETATION COVER-ALL (%) NATIVE PERENNIAL GRASSES (c) (cant) Ceratochloa carinata 0.00 40.00 0.00 0.00 0.00 Elymus lanceolatus fm. albicans 0.20 40.00 0.39 0.20 0.36 Elymus longifolius 0.20 40.00 0.39 0.20 0.36 Elymus trachycaulus 0.60 50.00 1.18 0.70 1.25 Hesperostipa somata 0.00 20.00 0.00 0.00 0.00 Koeleria macrantha 0.30 20.00 0.59 0.30 0.54 Paswpyrum smithii 3.70 50.00 7.30 3.90 6.98 Poa agassizensis 3.40 90.00 6.71 4.70 8.41 Poa secunda 0.20 20.00 0.39 0.20 0.36 TOTAL NATIVE PERENNIAL GRASSES (c) 9.3 100.0 18.3 11.2 20.0 INTRODUCED PERENNIAL GRASSES (wol) Bromopsis inertnis 1.00 20.00 1.97 1.10 1.97 TOTAL INTRO. PERENNIAL GRASSES (c) 1.0 20.0 2.0 1.1 2.0 NATIVE SHRUBS Amelanchier alnifolia 0.90 60.00 1.78 ~ 0.90 1.61 Chrysothamnus nauseosus 0.10 10.00 0.20 0.10 0.18 Chrysothamnus viscidiflorus 2.30 80.00 4.54 2.60 4.65 Mahonia repens 0.00 10.00 0.00 0.00 0.00 Padus virginiana ssp. melanocarpa 0.00 10.00 0.00 0.10 0.18 Quercus gambelii 0.10 10.00 0.20 0.10 0.18 Seriphidium arbusculum ssp. longilobum 0.10 10.00 0.20 0.10 0.18 Sedphidium tddentatum 17.10 100.00 33.73 17.20 30.77 Symphodcarpos rotundifolius 10.80 70.00 27.30 11.90 21.29 TOTAL NATIVE SHRUBS 31.4 100.0 61.9 33.0 59.0 MOSS Moss 0.20 70.00 0.39 0.20 0.36 TOTAL MOSS 0.2 10.0 0.4 0.2 0.4 SUCCULENT Opuntia pol acantha 0.00 10.00 0.00 ~ 0.00 0.00 TOTAL SUCCULENT 0.0 10.0 0.0 0.0 0:0 Standing dead 2.80 80.00 2.80 Litter 34.10 100.00 34.10 Bare soil 12.10 100.00 t 2. t 0 Rock 0.30 30.00 ~ 0.30 TOTALS 100.0 105.2 TOTAL VEGETATION COVER 50.7 (s=5.9) 100.0 55.9 (s=8.1) 100.0 GROUND COVER (Litter+Rock+Veg+St.Dead) 87.9 93.1 SPECIES DENSITY (# of species/100 sq.m.) - (AVERAGE=21.5 Std.Dev.= 6.1) •