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interactive effects as cottonwoods gain in size and begin to negatively impact the willow <br />populations. <br />Exclosure 1 - All Transects Combined <br />150 <br />125 <br />100 <br />N <br />L <br />75 <br />L <br />Ol <br /> <br />50 <br />25 <br />0 <br />WET YEAR DRY YEAR WET YEAR DRY YEAR <br />------------------ <br />2006 <br />2007 <br />average height <br />2008 2009 <br />Year <br />• • • • • • • • . tallest plant height - - - smallest plant height <br />Exclosure 1 - All Transects Combined <br />Percent Change from Previous Year <br />2010 <br />2007 2008 2009 2010 <br />Year <br />change (mean height) - - - % change (max height) • • • • • • • • • % change (min height) <br />50% <br />40% <br />30% <br />20% <br />o, 10% <br />m <br />U 0 <br />a -10% <br />-20% <br />-30% <br />-40% <br />-50% <br /> <br />2010 Annual Report Coal Creek Wetland Mitigation Permit DA 198811488 Page 8