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• One of the interesting insights gained From sequential annual visits to Reference Areas is that even <br />within established long-term native vegetation, there is IIuctuation of the presence of spedes. In <br />pazticulaz there is a tendenty for many native spedes to manifest themselves in association with stress <br />in the form of drought <br />• <br /> <br />There is a solid prospect that a slow increase in the abundance of these plants will accrue as the scats <br />of drought or other stress incrementaIIy "age" the youthful reclamation sites. In light of this prospect <br />and the current reality of competition-suppressed forb and woody plant presence, it is appropriate to <br />place the benchmazk for what will be taken to currently comprise adequately diverse reclamation in <br />the lower half of the spectnun of diversity of the Reference Areas. <br />Standards <br />The proposed assessment of adequately diverse vegetational composition at the Seneca II-W Mine <br />(including the South Extension Area) will take the form of the following four tests; success is to be <br />demonstrated by passing at least two of the three Altemative Tests (B, C, or D) plus the Mandatory <br />Mandatory.Test A: No OverwheltnutgDominant <br />Test (A). <br />No single plant species may exceed GO% relative cover. <br />Alternative Test B: Total Spedes Density Test <br />This overall reclamation diversity standazd will be judged based on the species density values observed <br />along with cover sampling in the 100 sq.m. sample plots that accompany the standazd cover/species <br />presence samples. Species density numbers will be subjected to sample adequary assessment in the <br />usual CDMG manner. Experience has shown that spedes density almost always is adequately <br />sampled at the point that cover sampling is adequate and that is usually with the tnitumum sample <br />number. <br />TR-50 51 Revised 09105 <br />