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r <br />C 17E (2) <br />The native vegetation is mainly kobresia, alpine bluegrass, Scribner <br />wheatgrass and Baker wheatgrass. Other important plants that characterize <br />this unit are arctic bluegrass, alpine avens, and tufted hairgrass. The <br />average annual production of air-dry vegetation ranges from 700 to 1,200 <br />pounds per acre. Careful management is needed to prevent excessive grazing <br />on this unit because it is difficult to revegetate. More uniform distribu- <br />lion of livestock is aided by properly locating salt and by herding. Slopes <br />limit access by livestock and promotes overgrazing of less sloping areas. <br />Mechanical treatment practices are not practical because the surface is <br />stony and the slopes are steep. Grazing should be delayed until the soil <br />is firm and more desirable forage plants have achieved sufficient growth to <br />withstand grazing pressure. Loss of the surface layer results in a severe <br />• decrease in productivity and in the potential of the soil to produce vegeta- <br />lion suitable for grazing. <br />If this map unit is used for recreational development, the main limita- <br />lions are stones, slope and depth to bedrock. Steep slopes limit the use <br />of areas of this unit mainly to paths and trails which should extend across <br />the slope. Cuts and fills should be seeded or mulched. ERosion and sedimen- <br />tation can be controlled and the beauty of the area enhanced by maintaining <br />adequate plant cover. Vehicle traffic should be limited to roads and trails <br />because disturbed areas are subject to erosion and very slow to -revegetate__ <br />Wildlife such as elk, mule deer, coyotes, marmots, and pika utilize <br />This unit. The rangeland areas provide food for most of the wildlife and <br />nesting areas for some. Others find concealment in rock outcrops or in <br />nearby wooded areas. <br />