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- Beltline Reference Area #4 <br />7t: °• ~ Absolute and Relative Cover Sample Means; 1998-2001* <br />1998 1999 2000 2001 <br />Absolute Noxious Cover 41.0% 1.0% 7.0% 2.0% <br />Relative Noxious Cover 59.4% 3.0% 13.7% 4.3% <br />Absolute Grass Cover <br />Relative Grass Cover <br />Absolute Forb Cover <br />Relative Forb Cover <br />Absolute Shrub Cover <br />Relative Shrub Cover <br />Total Vegetation Cover <br />10.0% 25.0% 36.0% 36.0% <br />14.5% 75.8% 70.6% 76.6% <br />8.0% 0.0% 3.0% 1.0% <br />11.6% 0.0% 5.9% 2.1% <br />10.0% 7.0% 5.0% 8.0% <br />14.5% 21.2% 9.8% 17.0% <br />69.0% 33.0% 51.0% 47.0% <br />*Data is from only 2 transects each year, and <br />as such, statistical confidence intervals were <br />not calculated. <br />Figure 7 -Beltline Reference Area #4 Absolute Cover <br />Trends; 1998-2001 <br />80.0% <br />`m 70.0% <br />p 60.0% <br />y 50.0% <br />~ 40.0% <br />u°i 30.0% <br />Q 20.0% <br />e 10.0% <br />0.0% <br />-~ Total Vegetation <br />Cover <br />-f-Noxious Cover <br />-~ Grass Cover <br />~- Non-Noxious Forb <br />Cover <br />-~ Shrub Cover <br />Noxious cover declined dramatically following initial <br />treatment in 1998, and has remained low. Grass cover <br />increased sharply following initial treatment, and appears <br />to have stabilized in 2000. <br />TABLE 14 <br />1998 1999 2000 2001 <br />