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TABLE 1 (continued) <br />M_34X Natural Plant Quality Modifier Values <br />Cover Class/Estimated Percent Cover for Invasive Species Modifiers <br />Cover ClassNalue Definition <br />A <br />Highest quality natural commu nity, no disturbances and <br />natural processes intact. <br />Good quality natural community. Has its natural <br />B process e s intact, but shows signs of past human <br />impacts. Low levels of exotics. <br />Moderate condition natural community with obvious past <br />C disturbance but is still clearly recognizable <br />as a native community. <br />Poor condition of a natural com munity . Includes some <br />D natives, but is dominated by no n-natives <br />and/or is widely dis turbed and a ltered. <br />NA <br />Native species present in an altered / non-native plant <br />commun ity. <br />Altered I non-native plant com munity. These semi- <br />NN natura l com m unities do n ot qualify fo r natural <br />quality ranking. <br />M_ 408 Common Buckthorn Cover Modifier Values <br />Cover Class/Estimated Percent Cover for Invasive Species Modifiers <br />Cover ClassNalue Definition <br />0 U nknown or not observed <br />I Obse rved, unknown quantity <br />2 I -5% Cover <br />3 6 -25 % Cover <br />4 26 -50% Cover <br />5 51 -75% C over <br />6 76 -100% Cover