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Table 8. COVER, FREQUENCY AND IMPORTANCE VALUE SUMMARY FOR THE BIG SAGEBRUSH SHRUBLAND REFERENCE <br />AREA AT THE WALDEN COAL PROJECT SITE. BASED ON 1998 (JULY 28) DATA FROM FIFTEEN 25-METER POINT <br />TRANSECTS. ± VALUES EQUAL THE STANDARD DEVIATION. <br /> <br />Species Mean <br />Cover Relative <br />Cover Range of <br />Cover Values Percent <br />Frequency Relative <br />Frequency Importance <br />Value <br />Rank <br />COOL SEASON PERENNIAL GRASSES <br />Agropyron druystachyum 1.40 3.09 0 - 4 93.33 6.36 9.46 5 <br />Calamagrostismontanensis <0.01 <0.01 0-<1 60.00 4.09 4.09 13 <br />Carex eleocharis 0.73 1.62 0 - 3 60.00 4.09 5.71 10 <br />Carex filifolia 0.07 0.15 0 - 1 6.67 0.45 0.60 22 <br />Carexheliophila 0.07 0.15 0- 1 33.33 2.27 2.42 17 <br />Festuca idahoensis 15.20 33.58 0 - 26 100.00 6.82 40.40 2 <br />N Juncusbalticus <0.01 <0.01 0-<1 13.33 0.91 0.91 21 <br />~ Koeleria nracrant{w 2.07 4.57 0 - 6 100.00 6.82 11.38 4 <br />Poa ampla <0.01 <0.01 0 -<1 20.00 1.36 1.36 20 <br />Poa fcndleriana 0.93 2.06 0 - 4 60.00 4.09 6.15 8 <br />Poa sandbergii <0.01 <0.01 0 -<1 13.33 0.91 0.91 21 <br />Sitanion longifolium 0.07 0.15 0 - 1 20.00 1.36 1.51 19 <br />Stipa lettermanii 0.13 0.29 0 - 1 40.00 2.73 3.02 15 <br />Sub-total 20.67 45.66 <br />PERENNIAL FORBS <br />Androsace septentrionalis <0.01 <0.01 0 -<1 33.33 2.27 2.27 18 <br />Antennariaparuifolia 0.40 0.88 0- 3 73.33 5.00 5.88 9 <br />Comandraumbellata <0.01 <0.01 0-<1 13.33 0.91 0.91 21 <br />Eriogonumumbellatum 0.07 0.15 0- 1 80.00 5.45 5.60 11 <br />Heucheraparaifolia <0.01 <0.01 0-<1 20.00 1.36 1.36 20 <br />Mertensialanceo[ata <0.01 <0.01 0-<1 33.33 2.27 2.27 18 <br />Penstemon strictus 0.07 0.15 0 - 1 6.67 0.45 0.60 22 <br />Phlox hoodii 0.20 0.44 0 - 2 60.00 4.09 4.53 12 <br />Phloxmultiflora 0.13 0.29 0- 1 33.33 2.27 2.57 16 <br />Senecio integerrimus <0.01 <0.01 0 -<1 13.33 0.91 0.91 21 <br />Sub-total 0.87 1.91 <br />