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Based on these interim results, it appears that 6 inches of topsoil with either of the seed mixes has <br />outperformed both the non - topsoil and 18 -20 inches of topsoil treatments with respect to vegetation <br />cover and shrub densities and diversity after ten growing seasons. There is also evidence that browsing <br />by elk and deer are causing an increased decline in woody plant density and shrub cover, thus allowing <br />perennial herbaceous plants to increase in dominance. As stated in the past, results of this study should <br />be viewed with caution given that seeding of these plots coincidentally occurred in an "excellent" shrub <br />recruitment year mine -wide (based on observed results for other revegetation efforts during this year), <br />If these plots were seeded one year earlier or later, the shrub cover and densities most likely would have <br />been considerably lower. Continued observation will shed additional light on the longer -term dynamics of <br />these populations. <br />Cedar Creek Associates, Inc. B - 6 Colowyo Mine <br />2011 Revegetation Monitoring Report <br />