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• area of bottomland habitat at Yoast occurs along a drainage that runs <br /> south to north through the middle of the proposed permit area. Box- <br />elder (Acer neaundo) and aspen are the principal trees in bottomland; <br />Babb willow (Salix bebbiana) occurs in a narrow strip along Grassy <br />Creek in the southeast corner of the area. Shrubs found in this <br />habitat include: mountain snowberry, gooseberry (Ribes inerme), silver <br />sagebrush (Seriohidium canum), and chokecherry. ESCO (1993) also <br />identified numerous grasses and fortis in bottomland areas at Yoast. <br />Conservation Reserve Program <br />Approximately 30 acres of former cropland in the north part of <br />the wildlife survey area has been seeded to grass under the Conserva- <br />tion Reserve Program (CRP). The CRP areas are dominated by a single <br />species, intermediate wheatgrass (Thinoovrum intermedium). This grass <br />• has grown to s height of approximately five feet in much of the CRP <br />area (ESCO 1993). <br />Rock Outcroo <br />Although rock outcrops did not represent a vegetation type, such <br />areas were shown on the vegetation maps and do constitute a wildlife <br />habitat. This habitat is characterized by scattered sandstone out- <br />crops in very steep areas with sparse vegetation. Because rock out- <br />crop often occurs as scattered, unmappable inclusions within other <br />habitats, the 12 acres of rock outcrop calculated for the Yoast area <br />understates the actual extent of this habitat. <br />• <br />13 <br />