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4 - 68 <br />• Fortis are relatively infrequent. Fortis present in minor amounts are: timber milkvetch, <br />Astraga/us conva//anus, northern sweetvetch, Jedysorum borea/e, tumble mustard, and <br />goldenrod, So/idago sparsif/ora. <br />PRODUCTION <br />Estimated production ranges from 3.2 g/mZ to 142.8 g/m2 and averages 38.7 g/mZ or <br />345 pounds per acre. Of this, 48 percent (18.6 g/mz) is Salina wildrye and 13 percent (5.1 <br />g/mZ) is Indian ricegrass. Total forb production is 10.1 g/m2 or 26 percent. See Table 4.5-10. <br />DENSITY <br />Total tree density is moderately dense (189 trees per acre). Utah juniper is the most <br />common tree with a density of 173 trees per acre. Pinyon pine is scattered throughout the <br />juniper (16 trees per acre). Trees occur more densely on north facing slopes than west facing <br />slopes. The average height and DBH for Utah juniper is 6 meters and 27.7 centimeters, <br />respectively. Pinyon pine average height is 6 meters with an average DBH of 16.6 centimeters. <br />• See Table 4.5-11. <br />Average shrub density is 1,797 shrubs per acre in the Juniper Woodland sample area. <br />Mountain pepperweed, a subshrub, is the most common with 880 plants per acre, followed by <br />mountain mahogany with 696 shrubs per acre and Utah serviceberry with 178 shrubs per acre. <br />Average shrub height for all shrubs is 99.2 centimeters but ranges from 13 to 600 centimeters. <br />See Table 4.5.12. <br />RICHNESS AND EQUITABILITY <br />Species richness is highest of all vegetation types in the Juniper Woodland Gndex = 15.37) <br />because of the variable habitat conditions created by the wide range of slopes and aspects. <br />Equitability is fairly low Index = 0.80) because of the singular dominance of Utah juniper. See <br />Table 4.5.5. <br />~J <br />M~ Volume 1 4-29.96 <br />