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Table 6. COVER, FREQUENCY ANU IMPORTANCE VALUE SUMMARY FOR TIIE <br />RECLAIMED AREA AT TIIE WALDEN COAL COMPANY MINE SITE. BASEU <br />ON 1989 DATA FROM TWENTY 25-METGR POINT TRANSECTS. +/- <br />VALUES EQUAL TIIE STANDARD DEVIATION. <br />Mean Relative Range of Percent Relative <br />Species Cover Cover Cover Values Frequency Frequency <br />(K) (k) (~) (k) (%) I.V. Rank <br />COOL SEASON PERENNIAL GRASSES <br />Agropyron dasyatachyum 7.40 90.22 <br />Agropyron smithii 1.90 10,33 <br />Poa ample 0.70 3.80 <br />Stipa viridula 2.10 11.41 <br />Sub-total 12.10 85.76 <br />INTRODUCED PERENNIAL GRASSES <br />Elymus ~unceus 0.20 1.09 <br />Sub-total 0.20 1.09 <br />PERENNIAL FORBS <br />Achilles lanulosa 0.10 0.54 <br />Sub-total 0.10 0.54 <br />ANNUAL ANU BIENNIAL FORBS <br />Chenopodium atrovirens 1.10 5.98 <br />Chenopodium berlandieri 3.10 16,85 <br />Salsola iberica 0.40 2.17 <br />Sub-total 9.60 25,00 <br />SRRUBS <br />Artemisia tridentate 1.90 7.61 <br />Sub-total 1.40 7.61 <br />SUM OF SPECIES COVER ]8.40 <br />Litter 54.00 <br /> • <br />0 - 16 90.00 26.87 67.08 1 <br />0 - ]0 55.00 16.42 26.74 3 <br />0 - 6 15.00 9.46 8.28 7 <br />0 - 12 40.00 11.94 23.35 4 <br />U - 2 ]0.00 2.99 4.07 9 <br />0 - 2 5.00 1.49 2.04 ]0 <br />0 - 8 25.00 7.40 13.44 • <br />0 - 20 50.00 14.93 31.77 2 <br />0 - 2 20.00 5.97 8.14 8 <br />0 - ]0 25.00 7.46 15.07 5 <br />40 - 74 100.00 <br />l <br />