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<br />t <br /> <br />, <br /> <br />APproach: <br /> <br />The existing Habitat Suitability Index (HSI) in the willow riparian vegetation type tor beaver is 0.526 <br />(0.'8 for the entire study area) and is projected to reach 0.65 (0.23 for the entire study area) <br />through implementation of management actions. <br /> <br />Projected changes in habitat parameters associated with management actions include the <br />following: <br /> <br />. <br /> <br />1. Hydrophytic shrub cover within the existing 135 acres of willow riparian vegetation type from the <br />current 20 percent to approximately 30 percent through interplanting 32 acres of existing willow <br />stand. An additional 10 percent increase in shrub cover will result from removal of grazing, <br />resulting in a total cover of 40 percent within the willow riparian vegetation type. <br /> <br />Expected Resutts: <br />The management actions will result in a gain of 46 beaver habitat units on the mitigation area, <br />which will fully replace the 20 habitat units lost in the reservoir basin, with a surplus of 26 habitat <br />units. <br /> <br />WETlAND HABITAT IMPACT #2: loss of 14 habitat units associated with wildlife species <br />represented by the yellow warbler model. <br /> <br />Associated ManaQement Actions: <br /> <br />Wetland habitat management actions # 1, 2, 3, 6. <br /> <br />Approach: <br /> <br />The existing HSI in the willow riparian vegetation type for yellow warbler is 0.35 and is projected to <br />reach 0.58 through implementation of management actions. <br /> <br />Projected changes in habitat parameters associated with management actions include the <br />following: <br /> <br />1. Hydrophytic shrub cover within the existing 135 acres of willow riparian vegetation type will <br />increase from the currem 20 percent to approximately 30 percent through interplanting 32 acres of <br />existing willow stand. An additional 10 percent increase in shrub cover will result trom removal of <br />grazing, resulting in a total cover of 40 percent within the willow riparian vegetation type. <br /> <br />2. Height of hydrophytic shrubs and trees will increase by 10 pereem, from 183 em. to 201 em., in <br />the mitigation area through removal of grazing. <br /> <br />3. Percentage composition of hydrophytie shrubs will increase by 35 percent in the mitigation area <br />by restoring the hydrology on 175 acres of the mitigation area and removal of grazing. <br /> <br />Expected Resutts: <br />The management actions will result in a gain of 39 yellow warbler habitat units on the mitigation <br />area, which will fully replace the 14 habitat units lost in the reservoir basin, with a surplus Of 25ahabitat units. <br /> <br />22 <br />