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• understory are presented in Table 7. Carex sp. had a mean cover value <br />~ ~ of 3.1a. 8outeloua curtipendula had a mean cover value of 2.5.°S, 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 0.7<. <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 16.3%. <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 gms/m2. Perennial fortis had a <br />mean production of 1.4 ams/m2, and Anemone patens, 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 a~as <br />10.0 gins/m2. <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, Ouercus ganibelii had a mean density <br />value of 1.5/m2. Cercocarpus niontanus had a mean density of 0.5/in2, <br />Svmphoricarpos oreonhilus had a n!ean density o` 0.4/in2, and Rosa <br />~~~oodsii had a r.~ean density of 0,1!x;2. In the tree category, Pines <br />ponderosa had a mean density of 2.5/100m2, Pseudotsupa ~^enziesii had <br />a mean density of 2.0/100m2, Juniperus 5cnpulorum had a mean density <br />of 1.4/100m2, and Pines edulis had a mean density of 1.0/100m2. The <br />• ` sapling category sho~~ied Pseudotsuoa inenziesii with a mean density of <br />