Laserfiche WebLink
i <br />Plot s2-s • <br />~I Native shrubs averaged 76.9 individuals per acre (Table 57). Saskatoon serviceberry and <br />chokecherry each accounted for roughly one-third of this average. Gambel's oak,_ big sagebrush, <br />and mountain snowberry contributed the balance. <br />DISCUSSION <br />Cover <br />As can be seen in Figure 1, 1994 cover was highest in the reference areas and reclaimed areas. <br />Although direct comparison between years is, in general, not possible, it appears that cover <br />~~ values overall in 1994 dropped to levels present during the drought period of the late 1980's. <br />1994 was a dry, hot, and windy growing season (see Climatic Conditions, below) that <br />accompanied a distinct decease in cover in both reclaimed and reference areas. <br />1983, 1987, and Wadge Pasture reclaimed areas (with confidence intervals) exceeded 90 <br />percent of the Sagebrush Reference Area cover; they also exceeded 90 percent of the Mountain <br />Brush Reference Area cover, although the tatter's cover was somewhat artificially depressed • <br />~ (see below). The more recently reclaimed1990 and 1992 areas were still lower than the <br />standards set by the reference areas. <br />~ Over the period of record (1987 to 1994), average vegetation cover in the reclaimed areas was <br />highest in 1987 (72.1 percent), slightly lower in 1988 (70.9 percent,), substantially lower <br />in 1989 (48.1 percent), somewhat higher in 1990 (60.2 percent), yet higher in 1991 (65.4 <br />~, percent), declined somewhat in 1992 (60.1 percent), rose again in 1993 (62.6 percent), and <br />dropped rather steeply in 1994 (52.8 percent). See 1994 cover tables m Appendix 1 and the <br />1987, 1988, 1989, 1990, 1991, 1992, and 1993 Revegetation Monitoring Reports for the <br />~ Seneca II Mine. These average figures admittedly are calculated from different numbers of <br />i sampled areas and different aged areas, but inasmuch as a range of old to new reclamation of both <br />the Wadge and Wolf Creek areas has been sampled each year, these data may tend to suggest <br />trends: <br />24 • <br />