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Table 14. TRENDS IN MEAN COVER FORT[-~ PORTION OF THE RECLAIMED AREA SEEDED IN 1984. WALDEN COAL <br />PROJECT SITE. BASED ON DATA COLLECTED BETWEEN 1989 AND 1997. MEAN COVER VALUES IN PERCENT. <br />w <br />w <br />Year 1989 1990 1991 1992 1993 1994 1995 1996 1997 <br />Sample Size 6 6 6 6 6 6 6 6 15 <br /> <br /> <br />SEMI-SHRUBS OR HALF-SHRUBS <br />Artemisia frtgida 0.00 <0.01 0.33 <0.01 0.33 <0.01 <0.01 <0.01 0.07 <br />Subtotal 0.00 <0.01 0.33 <0.01 0.33 <0.01 <0.01 <0.01 0.07 <br /> <br />SHRUBS <br />Artemisia nova 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 <0.01 <br />Artemtsia trtdentata 4.67 8.67 10.67 11.33 8.00 20.00 17.33 22.00 20.40 <br />Chrysothamnus nauseosus 0.00 0.00 <0.01 0.00 <0.01 <0.01 <0.01 <0.01 <0.01 <br />Chrysothamnus tinseyi 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 <0.01 <br />Chrysothamnus viscidiflorus 0.00 0.00 0.00 0.00 0.00 0.00 0.00 <0.01 0.00 <br />Subtotal 4.67 8.67 10.68 11.33 8.01 20.00 17.34 22.02 20.40 <br /> <br />LITTER 46.33 46.00 39.33 39.00 48.00 45.67 39.67 39.00 39.43 <br />ROCK 0.33 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.10 <br />TOTAL VEGETATION 23.67 25.00 17.33 26.33 23.00 31.00 26.67 30.00 32.60 <br />LI'ITER/ROCK 46.67 46.00 39.33 39.00 48.00 45.67 39.67 39.00 39.53 <br />BARE SOIL 29.67 29.00 43.33 34.67 29.00 23.33 33.67 31.00 27.80 <br />TOTAL COVER 70.33 71.00 56.67 65.33 71.00 76.67 66.33 69.00 72.20 <br /> <br />No. Species/Sample 4.00 4.33 2.17 3.6? 3.00 3.83 3.50 3.00 4.27 <br /> <br />