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11 <br />. understory are presented in Table 7. Carex sp. had a mean cover value <br />i <br />of 3.1. 8outeloua curtipendula had a mean cover value of 2.50, and <br />Potentilla concinna had a mean cover value of 1.2%. Koeleria cristata <br />had a m -an cover value of 0.9�, Danthonia parryi had a mean cover <br />value of 0.8%, and Swertia radiata had a mean cover value of 0.70. <br />The remaining species had very low cover values. Total mean cover <br />for this site was 13.3 In the non -herbaceous category, litter <br />accounted for 49.0."„ bare ground had a mean cover value of 21.3°„ and <br />rock had a mean cover value of 16.3x. <br />Production means and standard errors for the Ponderosa pine - <br />Douglas fir -oak reference area are presented in Table 8. Danthonia <br />parryi had a mean production of 3.1 qms/m2. Perennial forbs had a <br />mean production of 1.4 ams/m2, and Anemone oatens, Carex spp., <br />•� Stipa scribneri, and Thalictrum fendleri all had production means of <br />0.6 gms/m2. The remaining species had production means of 0.4 gms/m2 <br />and below. Total mean production for understory in the site was <br />10.0 ams/m 2. <br />Density measurements for the shrub, tree and sapling components <br />of the Ponderosa pine -Douglas fir -oak reference area are presented in <br />Table 9. In the shrub category, Quercus gambelii had a mean density <br />value of 1.5/m2. Cercocarpus montanus had a mean density of 0.5/m2, <br />Svmphoricarpos oreonhilus had a mean density of 0.4/m2, and Rosa <br />woodsii had a mean density of 0.1/m2. In the tree category, Pinus <br />ponderosa had a mean density of 2.6/100m2, Pseudotsuoa menziesii had <br />a mean density of 2.0/100m2, Juniperus scopulorum had a mean density <br />of 1.4/100m2, and Pinus edulis had a mean density of 1.0/100m2. The <br />/t saplinq category shared Pseudotsuoa menziesii with a mean density of <br />