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Table 2. TRENDS IN MEAN COVER FOR THE PORTION OF THE RECLAIMED AREA SEEDED IN <br />1984. WALDEN COAL PROJECT SITE. BASED ON DATA COLLECTED BETWEEN <br />1989 AND 1993. MEAN COVER VALUES IN PERCENT. <br />Species 1989 1990 1991 1992 1993 <br />Sample Size 6 6 6 6 6 <br />COOL SEASON PERENNIAL GRASSES <br />Agropyron daeystachyum 9.33 9.67 6.00 8.33 11.33 <br />Agropyron emithii 1.00 0.67 0.01 0.00 1.67 <br />Agropyron spicatum 0.00 0.01 0.00 0.00 0.00 <br />Deachampeia caespitoea 0.00 0.01 0.00 0.00 0.00 <br />Festuca idahoensis 0.00 0.00 0.00 0.00 0.01 <br />Hordeum brachyantherum 0.00 0.33 0.00 0.00 0.00 <br />Oryzopsie hymenoides 0.00 0.01 0.00 0.01 0.01 <br />Poa ampla 2.33 0.00 0.00 0.00 0.00 <br />Stipa comata 0.00 0.00 0.00 ~ 0.33 0.00 <br />Stipa viridula 6.00 3.33 0.01 4.33 0.67 <br />Subtotal 18.67 14.03 6.02 13.01 13.69 <br />INTRODUCED PERENNIAL GRASSES <br />Agropyron cristatum 0.00 0.00 0.00 0.01 0.00 <br />Agropyron intermedium 0.00 0.00 0.00 0.33 0.01 <br />Hromue inermis 0.00 0.00 0.00 0.01 0.00 <br />Elymus junceus 0.33 1.67 0.33 1.67 1.00 <br />Poa prateneie 0.00 0.33 0.01 0.00 0.01 <br />Subtotal 0.33 2.00 0.34 2.02 1.02 <br />PERENNIAL FORBS <br />Achillea lanulosa 0.00 0.01 0.00 0.01 0.01 <br />Arabia ep. 0.00 0.00 0.00 0.00 0.01 <br />Astragalue cicer 0.00 0.33 0.00 0.00 0.01 <br />Astragalue crassicarpue 0.00 0.01 0.00 0.00 0.00 <br />Astragalue kentrophyta 0.00 0.00 0.01 0.00 0.00 <br />Penetemon etrictue 0.00 0.00 0.00 0.01 0.01 <br />Rumex ealicifolius 0.00 0.00 0.01 0.00 0.01 <br />Subtotal 0.00 0.35 0.02 0.02 0.05 <br />ANNUAL AND BIENNIAL FORBS <br />Chenopodium pratericola 0.00 0.01 0.00 0.00 0.00 <br />Machaeranthera caneecens 0.00 0.00 0.00 0.01 0.01 <br />Subtotal ~~ 0.00 0.01 0.00 0.01 0.01 <br />SEMI-SHRUBS OR HALF-SHRUBS <br />Artemisia frigida 0.00 0.01 0.33 0.01 0.33 <br />Subtotal 0.00 0.01 0.33 0.01 0.33 <br />SHRUBS <br />Artemieia tridentata 4.67 8.67 10.67 11.33 8.00 <br />Chryeothamnus naueeosue 0.00 0.00 0.01 0.00 0.01 <br />Subtotal 4.67 8.67 10.66 11.33 8.01 <br />LITTER 46.33 46.00 39.33 39.00 48.00 <br />ROCK 0.33 0.00 0.00 0.00 0.00 <br />TOTAL VEGETATION 23.67 25.00 17.33 26.33 23.00 <br />LITTER/ROCK 46.67 46.00 39.33 39.00 48.00 <br />BARE SOIL 29.67 29.00 43.33 34.67 29.00 <br />TOTAL COVER 70.33 71.00 56.67 65.33 71.00 <br />No. Species/Sample 4.00 4.33 2.17 3.67 3.00 <br />-8- <br />