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measures provide a means of examining progress toward the return of diverse species <br />wmposition in the reclaimed areas. <br />Plant Species Listing <br />Scientific names used follow Weber and Wittmann (1996), common names cited are found in <br />Beetle (1970), Nickerson et al. (1976), or Soil Conservation Service (1979). Cross reference to <br />the substantially revised scientific nomenclature for the flora of Eastern Colorado, as set forth by <br />Weber and Wittmann (2001), may be determined by reference to Weber and Wittmann (1992) or <br />by reference to Appendix 2 of this report (Table 14). <br />During the course of the fieldwork, a list of all encountered plant species (quantitative plus <br />incidental observations) was compiled for each reclamation area and the three reference areas. <br />These lists are summarized in Appendix 2, Table 14, Species Presence -Reclaimed and <br />Reference Areas, which includes current nomenclature and cross references to older <br />nomenclature. It should be noted that all big sagebrush encountered were referred to <br />Seriphidium tridentatum. Additionally, all occurences of Poa secunda are what was previously <br />referred to as Poa ampta <br />Photographic Record <br />• Within each reclamation and reference area, representative color photographs were taken to <br />document the appearance of the vegetation in 2004 (Appendix 4). Within each photograph, a <br />placard identifies the particular area being illustrated. <br />Statistical Methods <br />STATISTICAL DESIGN <br />Cover and herbaceous production data were collected in all areas. Woody plant density samples <br />were collected in the 2002 Reclaimed Area but were not collected in any of the reference areas. <br />Sampling proceeded using a single stage statistical design. <br />Sample locations in reclaimed areas were randomly plotted by use of an internal script routine <br />within ArcView software. Minimum spacing between sample points was 170 feet (one 50 m <br />transect length). The SCC-assigned number of samples for a given parameter in a given area <br />reflected previously experienced sample variability or the level of precision required for that area. <br />In the extended reference areas, each reference unit was gridded and numbered. Grid cell size <br />was 200 feet X 200 feet. These grid cells were placed contiguously by hand on maps of 1:4,800 <br />scale. Sample locations were selected as the center points of grid cells selected using random <br />numbers generated by computer. <br />