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observed species; a total perennial warm - season grass relative cover of 1.4% with three species <br />observed; and a total perennial forb and sub -shrub relative cover equal to 7.0% with 12 species <br />observed. There were no species that exceeded 70% relative cover on the Greasewood Comparison <br />Revegetation Areas in 2011. <br />Greasewood Comparison Revegetation - 2011 & 2012 <br />2011 <br />2012 <br />Average Live Vegetation Cover <br />69.3 <br />36.05 <br />Average Rock Cover <br />4.6 <br />5.2 <br />Average Litter Cover <br />16.9 <br />.. <br />._--_.----------- - - - --- <br />verage Bare Ground Exposure <br />9.2 <br />10.3 <br />Average Perennial Cover <br />25 <br />20.7 <br />Average Annual and Biennial Cover <br />44.3 <br />15.3 <br />Dominant Taxa and % Average Cover <br />Cheatgrass ! <br />34.0% <br />Cheatgrass <br />11.5% <br />Greasewood <br />10.4% <br />Greasewood <br />9.3% <br />Annual Wheatgrass <br />8.9% <br />Forage kochia <br />4.5% <br />Sub - Dominant Taxa <br />Four -wing saltbush E <br />6.8% <br />Four -wing saltbush <br />4.1% <br />Forage kochia i <br />4.3% <br />Annual wheatgrass <br />3.2% <br />Little barley <br />1.0% <br />Wyoming Big Sagebrush <br />1 0.8% <br />Herbaceous Production Total (lbs/acre) <br />872.1 <br />262.8 <br />Perennial Production Total (lbs /acre) <br />182.0 <br />107.9 <br />Ratio of Total Production to Perennial Production <br />4.8 <br />2.4 <br />Woody Plant Density (shrubs /acre) <br />1,943 <br />1,650 <br />Species exceeding 70% Relative Cover (Y /N) <br />No <br />No <br />Perennial Cool- Season Grass Relative Cover <br />1.2 <br />1.2 <br />Perennial Warm - Season Grass Relative Cover <br />1.4 <br />1.2 <br />Forb and Sub -Shrub Relative Cover <br />7.0 <br />14.3 <br />In 2012, average ground cover for the Greasewood Comparison Revegetation Areas consisted of <br />36.1% live vegetation, 5.2% rock, 48.4% litter, and 10.3% bare ground exposure. Perennial cover <br />averaged 20.7 %, with annual and biennial cover averaging 15.3 %. Dominant taxa included cheatgrass, <br />greasewood, and forage kochia, with 11.5 %, 9.3 %, and 4.5 %, respectively. Sub - dominant species <br />included four -wing saltbush, annual wheatgrass, and Wyoming big sagebrush with 4.1 %, 3.2 %, and <br />0.8% cover, respectively. Total annual herbaceous production in the Greasewood Comparison <br />Revegetation Areas totaled 262.8 pounds per acre with perennials contributing 107.9 pounds per acre. <br />Woody plant density averaged 1,650 shrubs per acre, and consisted of mostly greasewood, four -wing <br />saltbush, and shadscale (Table 10). The unit exhibited 1.2% relative cover of total perennial cool- season <br />grasses and five observed species; a total perennial warm- season grass cover of 1.2% with two species <br />observed, and a total perennial forb and sub -shrub cover of 14.3% with seven species observed. There <br />were no species that exceeded 70% relative cover on the Greasewood Comparison Revegetation Areas in <br />2012. <br />CEDAR CREEK ASSOCIATES, Inc. Page 19 Snowcap - Phase III Bond Release <br />Evaluation - 2012 <br />