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~ ~ ~ ~ ~ ~ ~ ~ ~ w• ~ ~ ~ ~ ~ ~ ~ ~ ~ <br />Table 15. TRENDS IN MEAN COVER FOR THE PORTION OF THE RECLAIMED AREA SEEDED IN 1988. WALDEN COAL <br />PROJECT SITE. BASED ON DATA COLLECTED BETWEEN 1989 AND 1998. MEAN COVER VALUES IN PERCENT. <br />w <br />Year 1989 1990 1991 1992 1993 1994 ]995 19% 1997 1998 <br />Sample Size 14 14 14 14 14 14 14 14 20 20 <br /> <br /> <br />SEMI-SHRUBS OR HALFSHRUBS <br />Artemisia fiigida 0.00 <0.01 <0.01 <0.01 0.00 0.00 <0.01 <0.01 <0.0] <0.01 <br />Subtotal 0.00 <0.01 <0.01 <0.01 0.00 0.00 <0.01 0.02 <0.01 <0.01 <br /> <br />SHRUBS <br />Artemisia tridentata 0.00 0.29 0.57 0.86 0.29 0.57 1.57 1.00 1.05 3.35 <br />Cnatoides Janata 0.00 <0.01 <0.01 <0.01 0.14 <0.01 <0.01 <0.01 <0.01 0.05 <br />Chrysotlwmnus vaseyi 0.00 0.00 0.00 0.00 0.00 0.00 0.00 <0.01 0.00 <0.01 <br />Chrysothamnus nauseosus 0.00 0.00 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.10 0.75 <br />Chrysothamnus viscidiflorus 0.00 0.00 0.00 0.00 0.00 <0.01 <0.01 <0.01 0.00 <0.01 <br />Purshia tridentata 0.00 0.00 0.00 <0.01 0.00 0.00 0.00 0.00 0.00 <0.01 <br />Sarcobatus vermicutatus 0.00 0.00 0.00 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <br />Subtotal 0.00 0.30 0.59 0.90 0.45 0.57 1.61 1.04 ].15 3.55 <br /> <br />LITTER 57.29 33.57 54.43 40.71 43.00 49.71 47.00 49.14 47.70 45.9 <br />ROCK 0.14 0.00 0.29 0.00 0.00 0.14 0.00 0.29 0.10 0.75 <br />TOTAL VEGETATION 16.19 33.29 19.74 30.86 33.43 27.43 32.86 27.14 30.60 33.2 <br />LITTER/ROCK 57.43 33.57 54.71 40.71 43.00 49.86 47.00 49.43 47.80 46.05 <br />BARE SOIL 26.43 33.14 26.14 28.43 23.57 22.71 20.14 73.43 21.60 20.75 <br />TOTAL COVER 73.57 66.86 73.86 71.57 76.43 77.29 79.86 76.57 78.40 79.25 <br /> <br />