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Vegetation Monitoring Results for Native Rangelands (undisturbed control) <br />Above ground biomass production, plant species composition and ground cover data were <br />collected from nearby native rangelands on July 27 and 28, 2007. The data were collected from <br />within twenty 9.6 square foot quadrates at the peak of production for most native plant species. <br />Quadrates were protected by enclosures to prevent vegetation removal by grazers and browsers. <br />The enclosures are relocated each growing season to prevent multiple years of protection. Above <br />ground vegetative biomass production was measured using a double sampling procedure of <br />estimates adjusted by actual values from representative samples. Six of the twenty quadrates <br />were estimated then clipped to obtain an actual weight correction factor to adjust estimated <br />weights. Clipped samples were oven dried to obtain an air dry weight correction factor for green <br />weights. <br />Table 6.3 shows a summary of the ground cover data collected from nearby native rangelands in <br />2007 and compares that data with data from previous years. The ground cover data in Table 6.3 <br />is summarized by class of vegetation and cover type from data presented in Table A1. The <br />ground cover data in Table Al are shown by plant species or cover type. The scientific and <br />common names of the plant species encountered are also presented in that table. <br />~=;~#rte 6.3 ~~w~~d 4 i~~ti ~ t~~r=~~Nn e ~~Z ~f~~cl~r+~c~ EctgtM'~"H ~~ ~. <br />2004 <br />°f°Cover 2005 <br />"loCover 2006 2007 <br />%Cover °l°Cover ~~ ° C ~'angc in <br />Cover <br />2006/2007 <br />Perennial Grasses 27.2 26.6 27.7 26.9 - 2.9 <br />Perennial Fortis 10.1 12.6 6.1 5.6 - 8.2 <br />Annual Grasses 0.2 1.2 0.9 1.2 + 25.0 <br />Weedy Fortis 1.1 3.0 0.8 0.6 - 25.0 <br />Shrubs 13.9 14.8 14.9 18.7 + 20.3 <br />Moss/Lichens 4.5 3.6 5.8 9.1 + 36.3 <br />Vegetative Litter 7.6 7.4 14.3 12.6 - 11.9 <br />Bare Ground 34.0 30.3 29.1 24.5 - 15.8 <br />Rock 1.4 0.5 0.4 0.80 + 50.0 <br />Total 100.0 100.0 100.0 100.0 <br />Table 6.4 shows a summary of the above ground vegetation biomass production data collected <br />from native rangelands. Table 6.5 shows a summary of the plant species composition data <br />collected from native rangelands. Both tables also show a comparison of the 2007 data with data <br />from previous years. The 2007 data in Table 6.4 and Table 6.5 are summarized by class of <br />vegetation from data presented in Table A2. The data presented in Table A2 are quantitative <br />above ground vegetative production and plant species composition for each plant species <br />encountered within the study. <br />16 <br />