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3.1.5.1 Vegetation Cover <br />• Total vegetation cover of the 1999 reclamation azeas was 32.80 percent. Graminoids <br />provided 13.60 percent mean cover (46.15% relative cover) and forbs accounted for 19.20 <br />percent mean cover (53.85% relative cover). Total cover values were variable between the <br />individual azeas within the 1999 reclamation azeas. The lowest total vegetation cover of the <br />pazcels sampled was found in Area 9 {18%) and the highest cover was encountered in Area 5 <br />(50%). No single species was encountered in all samples, though Ambrosia psilostachya <br />(ragweed) was encountered in 80 percent of all transects, and Bromus tectorum, Calamovilfa <br />longifolia, and Kochia scoparia were found in 70 percent of transects. <br />Total mean vegetation cover of the 1999 reclamation azeas was 32.80 percent. Fortis <br />provided 19.20 percent mean cover (53.85% relative cover), while graminoids accounted for <br />13.60 percent mean cover (46.15 % relative cover). Overall within the 1999 reclamation <br />azeas, Kochia scoparia was dominant, with contributions of 8.20 percent mean and 22.56% <br />relative cover. Ten additional species contributed significantly to cover, including <br />Calamovilfa longifolia with 4.20 percent mean (15.90% relative), Ambrosia psilostachya <br />contributing 4.60 percent mean total (I3.33% relative), Bromus tectorum with 3.60 percent <br />mean cover (9.23% relative cover), Helianrhus animus providing 2.00 percent mean (5.13% <br />relative), Melilotus o~cinalis (yellow sweetclover) providing 1.6 and 4.62 percent mean and <br />relative cover, respectively, Agropyron smithii with 1.20 percent mean and 4.62 percent <br />relative cover, Oryzopsis hymenoides contributing 1.40 percent mean (4.10% relative), <br />Panicum virgatum (switchgrass) with 0.80 percent mean and 4.10 percent relative, Bouteloua <br />• gracilis providing 1.00 percent mean and 3.59 percent relative cover, and the annual forb <br />Chenopodium album contributing 0.80 and 3.08 percent mean and relative cover, <br />respectively. <br />Vegetative litter (prior yeazs growth, dead wood, and other biologic organic material) <br />comprised 31.20 percent ground cover overall within the 1999 reclamation azeas. Baze soil <br />comprised 36.00 percent of the ground cover. No rock or cryptogams were encountered <br />during the cover sampling in the 1999 reclamation azeas. <br />3.1.5.2 Herbaceous Production <br />Overall total herbaceous production within the 1999 reclamation azeas was 110.05 g/m2 (98l <br />Ib/ac). Perennial forbs contributed the most to herbaceous production, 46.41 g/m2 (414 <br />lb/ac), accounting for 42.2 percent of total herbaceous production. Perennial grasses <br />contributed the second highest production level with 44.71 g/m2 (39816/ac), which was 40.6 <br />percent of the total mean herbaceous production. Annua[ forbs contributed 1527 g/m2 (136 <br />]b/ac) or 13.9 percent of total herbaceous production. Biennial forbs provided 2.60 g/m2 (23 <br />Ib/ac) or 2.4 percent of total herbaceous production. Annual grasses contributed the least to <br />annual herbaceous production in this area this yeaz {1.07 g/m2 or 10 lb/ac, and <1% of total <br />herbaceous production). <br />~J <br />Coors Energy Comparp~ Page 12 <br />2004 Revegetation Monitoring Report <br />