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Table 6. Cover Data -Mountain Brush Ext. Reference Area, Seneca IIW Mine, SCC, Routt Co., CO - 2002 Page 2 of 4 • I RELATIVE RELATIVE PLANT SPECIES AVERAGE VEGETATION AVERAGE VEGETATION COVER FREQUENCY COVER COVER-ALL COVERALL INTRODUCED PERENNIAL FORBS Breea arvensis 0.00 10.00 0.00 0.00 0.00 TOTAL INTRO. PERENNIAL FORBS 0.1 30.0 0.2 0.1 0.1 NATIVE PERENNIAL GRASSES (cool) Achnatherum hymenoides 0.00 10.00 0.00 0.00 0.00 Achnatherum lettermanii 0.30 30.00 0.46 0.30 0.38 Achnatherum nelsonii 0.20 50.00 0.31 0.20 0.25 Bromelica bulbosa 0.00 10.00 0.00 0.00 0.00 Bromopsis canadensis 0.00 10.00 0.00 0.10 0.13 Carex geyen 2.30 80.00 3.55 3.60 4.52 Carex pensylvanica ssp. heliophila 0.30 10.00 0.46 0.50 0.63 Ceratochloa carinata - 0.30 90.00 0.46 - 0.50 0.63 Elymus glaucus 0.00 10.00 0.00 0.00 0.00 Elymus lanceolatus fm. albicans 0.00 20.00 0.00 ~ 0.00 0.00 Elymus lanceolatus fm. dasystachya 0.10 20.00 0.15 0.10 0.13 Elymus longifolius 0.20 - 10.00 0.31 0.20 0.25 Elymus trachycaulus 0.80 90.00 1.23 1.20 1.51 Hesperostipa wmata 1.50 20.00 2.31 1.80 2.26 Leymus cinereus 0.10 10.00 0.15 ~ 0.10 0.13 Nassella viridula 0.00 10.00 0.00 0.00 0.00 Pascopyrum smithii 0.10 10.00 0.15 0.10 0.13 Poa agassizensis 6.90 100.00 10.65 11.30 14.18 Poa ampla 0.00 10.00 0.00 0.10 0.13 Poa fendleriana 0.00 10.00 0.00 0.00 0.00 Poa secunda 0.00 10.00 0.00 0.00 0.00 Pseudoroegneria spicata ssp. spicata 0.20 30.00 0.31 0.20 0.25 TOTAL NATIVE PERENNIAL GRASSES (c) 13.3 100.0 20.5 20.3 25.5 INTRODUCED PERENNIAL GRASSES (cool) Bromopsis inermis 0.00 - 10.00 0.00 0.00 0.00 ThinopyNm intennedium 0.10 20.00 0.15 0.10 O.t3 TOTAL INTRO. PERENNIAL GRASSES (c) 0.1 30.0 0.2 0.1 0.1 NATIVE SHRUBS Amelanchier alnifolia 5.30 100.00 8.18 5.90 7.40 Chrysothamnus viscidiflorus 0.00 40.00 0.00 0.00 0.00 Mahonia repens 0.00 20.00 0.00 0.00 0.00 Padus virginiana ssp. melanocarpa 2.40 80.00 3.70 4.20 5.27 Quercus gambelii 25.40 100.00 39.20 25.50 31.99 Rosa sayi 0.00 10.00 0.00 0.00 0.00 Seriphidium tridentatum 1.20 60.00 1.85 1.30 1.63 Symphoricarpos rotundifolius 13.20 100.00 20.37 ~ 16.10 20.20 TOTAL NATIVE SHRUBS 47.5 700.0 73.3 53.0 66.5 LICHEN Peltigera caning 0.00 10.00 0.00 0.00 0.00 TOTAL LICHEN 0.0 10.0 0.0 0.0 0.0 Standing dead 2.40 70.00 2.40 Litter 21.00 100.00 21.00 Bare soil 11.20 100.00 11.20 Rock 0.60 40.00 0.60 TOTALS 100.0 114.9 TOTAL VEGETATION COVER 64.8 (s=6.6) 100.0 79.7 (s=12.5) 100.0 GROUND COVER (Litter+Rock+Veg+St.Dead) 88.8 103.7 Total A/owable Vegetation Cover 17.3 SPECIES DENSITY (# of species/100 sq.m.) (AVERAGE= 25.4 Std.Dev.= 5.6)