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<br />Table 4. TRENDS IN MEAN COVER FOR THE PORTION OF THE RECLAIMED AREA SEEDED IN 1988. WALDEN COAL PROJECT <br />SITE. BASED ON DATA COLLECTED BETWEEN 1989 AND 1995. MEAN COVER VALUES ARE IN PERCENT. <br />Year <br />Species 1989 1990 1991 1992 1993 1994 1995 <br />Sample Size 14 19 14 14 14 19 19 <br />COOL SEASON PERENNIAL GRASSES <br />Agropyron dasysta chyum 6.57 17.57 9.86 18.43 20.00 13.00 8.14 <br />Agrostis sca bra 0.00 0.01 0.00 0.00 0.00 0.00 0.00 <br />Agropyron smi thii 2.29 3.57 1.57 0.57 0.57 0.57 0.00 <br />Agropyron spicatum 0.00 0.01 0.01 0.01 0.01 0.01 0.00 <br />i Agropyron tra chyca ulum 0.00 0.00 0.00 0.19 0.00 0,00 0.00 <br />a Ceratochloa ma rgina to 0.00 0.00 0.00 0.00 0.00 0.01 0.00 <br />~ Deschampsia caespitosa 0.00 0.01 0.00 0.00 0.00 0.00 0.00 <br />Festuca idahoensis 0.00 0.00 0.00 0.00 1.19 0.00 0.00 <br />Hordeum Juba rum 0.00 0.01 0.01 0.01 0.00 0.00 0.01 <br />Koeleria macrantha 0.00 0.00 0.00 0.00 0.01 0.00 0.00 <br />Oryzopsis hymenoides 0.00 0.01 0.01 0.01 0.01 0,14 0.01 <br />Poa ampla 0.00 0.00 0.00 0.00 0.19 0.00 0.00 <br />Stipa col umbiana 0.00 0.00 0.00 0.00 0.00 0.00 0.01 <br />Stipa viridula 0.93 0.00 0.00 0.01 0.00 0.00 0.00 <br />Subtotal 9.29 21.19 11.46 19.18 21.89 13.73 8.17 <br />INTRODUCED PERENNIAL GRASSES <br />Agropyron crista rum 0.00 0.01 0.00 0.01 0.19 0.01 0.01 <br />Alopecurus pra tennis 0.00 3.00 0.01 1.29 1.00 0.71 0.86 <br />Bromus inermis 0.00 0.00 0.00 0.01 0.00 0 0.01 <br />Elymus jun ce us 0.19 3.93 3.86 9.57 9.57 8.71 21.57 <br />