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<br />Table 4. COVER, FREQUENCY AND IMPORTANCE VALUE SUMMARY FOR THE AREA RECLAIMED iN 1988 AT THE WALDEN <br />COAL PROJECT' SITE. BASED ON 1998 QULY 30) DATA FROM TWENTY 25-METER POINT TRANSECTS. <br />± VALUES EQUAL THE STANDARD DEVIATION. <br />Mean Relative Range of Percent Relative Importance <br />Species Cover Cover Cover Values Frequency Frequency Value Rank <br /> <br />COOL SEASON PERENNIAL GRASSES <br />Agropyron dasystachyum 9.85 29.67 1 - 22 100.00 12.74 42.41 2 <br />Agropyron smithii 0.15 0.45 0 - 2 60.00 7.64 8.10 6 <br />Agropyron spicatum <0.01 <0.01 0 - <1 5.00 0.64 0.64 15 <br />Festuca idahoensis 0.05 0.15 0 - 1 5.00 0.64 0.79 14 <br />Koeleria manantha 0.05 0.15 0 - 1 5.00 0.64 0.79 14 <br />Oryzopsis hymenoides <0.01 <0.01 0 - <1 5.00 0.64 0.64 15 <br />Poa sandbergii <0.01 <0.01 0 - <1 5.00 0.64 0.64 15 <br />Stipa Columbiana <0.01 <0.01 0 - <1 5.00 0.64 0.64 15 <br />Stipa viridula 0.05 0.15 0 - 1 20.00 2.55 2.70 10 <br />Sub-total 10.15 30.57 <br />INTRODUCED PERENNIAL GRASSES <br />Agropyron cristatum 0.05 0.15 0 - 1 15.00 1.91 2.06 11 <br />Alopecurus pratensis 0.25 0.75 0 - 2 35.00 4.46 5.21 9 <br />Elymus junceus 17.40 52.41 0- 34 100.00 12.82 65.15 1 <br />Festuca ovina 1.75 5.27 0 - 7 70.00 8.92 14.19 4 <br />Subtotal 19.45 58.58 <br />ANNUAL GRASSES <br />Bromus tectorum <0.01 <0.01 0 - <1 5.00 0.64 0.64 15 <br />Sub-total <0.01 <0.01 <br />