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C <br />25 <br />Table 1. Percent cover means (x) for the affected area and <br />reference area of the Ponderosa Pine -Oak vegetation type. Allen <br />Mine, CF&I Steel Corporation, July -August, 1981. <br />Species or <br />Category <br />Affected <br />Area <br />4 <br />Reference <br />Area <br />R <br />Grasses <br />0.1 <br />0.2 <br />Andr000con sccparium <br />0.3 <br />0.2 <br />BouteZoua curtiperdula <br />-- <br />0.1 <br />BouteZoua gracilis <br />0.03 <br />-- <br />Carex spp. <br />0.5 <br />0.3 <br />Danthonia parryi <br />0.1 <br />0.2 <br />Stipa scribneri <br />0.1 <br />0.1 <br />Forbs <br />Annual forb <br />0.03 <br />-- <br />Anemone patens <br />0.1 <br />0.2 <br />Antennari.a rosea <br />-- <br />0.1 <br />Besseya plantaginea <br />-- <br />0.1 <br />Eriogonum jamesii <br />0.03 <br />0.03 <br />Fragaria ovalis <br />0.1 <br />0.1 <br />GaZium boreale <br />0.1 <br />0.03 <br />Potentilla concinna <br />0.1 <br />-- <br />ThaZictrwn fendZeri <br />0.4 <br />0.1 <br />Shrubs <br />Cercocarrus montanus 0.4 0.2 <br />Quercus gambelii 1.2 1.0 <br />Ribes inerme 0.4 0.5 <br />Symphoricarpos oreophiZus 0.03 -- <br />Cryotoaams <br />Moss 0.6 0.9 <br />------------------------------------ <br />X s X s <br />Total Plant Cover 4.1 3.a 4.0 3.6 <br />Litter and Rock Cover <br />90.0 <br />14.7 <br />82.0 <br />21.0 <br />Bare ground <br />8.7 <br />13.3 <br />17.3 <br />22.0 <br />Plant, Litter and Rock Cover <br />94.1 <br />13.0 <br />86.0 <br />22.2 <br />E <br />F <br />