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<br />9.0 Veeetation Types of Permit Area <br />3.1 Veeetation Types <br />The study area was characterized by three distinct vegetation <br />tomes. Vegetation type was a function of moisture, soil type, <br />aspect, slope, and elevation. <br />3.2 Riparian Woodland <br />A riparian woodland occurs at two sites in the lease areas <br />(?i~~re 1). The major riparian area extends the entire length <br />of the lease area. A second smaller riparian woodland area is <br />found' in the northwestern part of the lease area. Both areas <br />are characterized by a stream which only flows during periods <br />of runoff. Water marks along the streambeds suggest that water <br />infiltration into the soil increases as the stream flows east. <br />Infiltration causes the stream flow to decrease as it flows <br />eastward resulting in a gradual change of vegetation from west <br />to east. <br />Narrowleaved cottonwood Populus aneustifolia, ponderosa <br />• pine Pinus ponderosa, and wild plum Prunus americana are <br />do!ninant at the west end of the riparian woodlands. Ponderosa <br />pine is the dominant tree at the east end of the riparian area, <br />however a few narrowleaved cottonwoods are present. One seeded <br />juniper Juniperus monosperma, is also found throughout the <br />vegetation type. Important shrubs include willow Salix exigua, <br />Boulder raspberry Rubus deliciosus, snowberry Symphoricarpos <br />oakbrush Quercus eambelii, common gooseberries Ribes inerme, <br />and wax currant Ribes cereum. Oakbrush is the dominant shrub in <br />the west part of the riparin woodland. Western virgins bower <br />Clematis lieusticifolia is also found throughout the riparian <br />woodland. <br />3.3 Ponderosa Pine-Pinyon-Juniper Woodland <br />A ponderosa pine-pinyon-juniper woodland occupies the <br />majority of the lease area. Ponderosa pine Pinus ponderosa, <br />pinyon pine Pinus edulis and one seeded juniper Juniperus <br />monosperma form a patchy overstory. Ponderosa pine forms <br />relatively dense stands on the north facing slopes. One seeded <br />juniper is dominant on the east and south facing slopes. Pinyon <br />pine is found throughout the area. Oakbrush uercus gambelii, <br />skunkbrush Rhus trilobata, Diountain mahogany Cercocarpus montanus <br />• <br />4 2-4 <br />