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Table 14. TRENDS IN MEAN COVER FOR THE PORTION OF THE RECLAIMED AREA SEEDED IN 1984. WALDEN COAL <br />PROJECT' SITE. BASED ON DATA COLLECTED BETWEEN 1989 AND 1998. MEAN COVER VALUES IN PERCENT. <br />w <br />a <br />Year 1989 1990 1991 1992 1993 1994 1995 1996 ]997 1998 <br />Sample Size 6 6 6 6 6 6 6 6 15 15 <br /> <br />COOL SEASON PERENNIAL GRASSES <br />Agropyron dasystachyum 9.33 9.67 6.00 8.33 11.33 4.67 4.00 5.33 6.20 4.00 <br />Agropyron smithii 1.00 0.67 <0.01 0.00 1.67 0.00 0.00 0.67 0.07 0.07 <br />Agropyron spicatum 0.00 <0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 <br />Deschampsia caespitasa 0.00 <0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 <br />Festuca idahoensis 0.00 0.00 0.00 0.00 <0.01 0.00 0.00 0.33 0.02 <0.01 <br />Hordeum brachyantherum 0.00 0.33 0.00 0.00 0.00 0.00 0.00 0,00 0.00 0.00 <br />Koeleria manantha 0.00 0.00 0.00 0.00 0.00 0.00 0.00 <0,01 0.00 0.00 <br />Oryzopsis hymenaides 0.00 <0.01 0.00 <0.01 <0.01 0.00 0.00 0.00 0.00 0.00 <br />Paa ample 2.33 0.00 0.00 0.00 0.00 <0.01 0.00 0,00 0.00 0.07 <br />Poa sandber8ii 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0,00 <0.01 0.07 <br />Stipa comets 0.00 0.00 0.00 0.33 0.00 0.00 <0.01 0,00 0.00 0.00 <br />SHpa rriridula 6.00 3.33 <0.01 4.33 0.67 3.00 2.33 0,67 1.33 2.53 <br />Subtotal 18.67 14.03 6.02 13.01 13.69 7.67 6.34 7,00 7.80 6.73 <br /> <br /> <br />INTRODUCED PERENNIAL GRASSES <br />Agropyron cristatum 0.00 0.00 0.00 <0.01 0.00 0.00 0.00 <0,01 <0.01 <0.01 <br />Agropyron intermedium 0.00 0.00 0.00 0.33 <0.01 0.67 <0.01 0.00 <0.01 0.13 <br />Bromus inermis 0.00 0.00 0.00 <0.01 0.00 0.00 <0.01 <0,01 <0.01 <0.01 <br />Elymusjnnceus 0.33 1.67 0.33 1.67 1.00 2.67 2.33 1.00 4.00 2.2 <br />Festuca ouina 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.20 0.13 <br />Poa prafensis 0.00 0.33 <0.01 0.00 <0.01 <0.01 0.00 0,00 0.07 0.07 <br />Subtotal 0.33 2.00 0.34 2.02 1.02 3.34 2.35 1,02 4.27 2.53 <br /> <br /> <br />PERENNIAL FORBS <br />Achilles lanulosa 0.00 <0.01 0.00 <0.01 <0.01 <0.01 0.33 <0.01 0.07 0.13 <br />Agoseris glauca 0.00 0.00 0.00 0.00 0.00 0.00 <0.01 0.00 0.00 0.00 <br />Androsaceseptentionalis 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 <0.01 <br />