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• Sample adequacy requirements for cover data in these shrub <br />communities were calculated using the formula <br />__ 2s't' <br />nmin Idxl <br />where nmin = the minimum adequate number of cover transects <br />s= = sample variance (absolute cover) <br />t = a designated t-statistic lone-tailed test with 80~ <br />confidence) <br />d = desired limits of detection 10.1 or 1011 <br />x = sample mean (absolute percent cover) <br />2.3.2 Collection and Analysts of Shrub and Tree Date <br />Data on shrub and tree density were recorded at the randomly <br />located vegetation cover sample sites. Shrub densities were tallied from <br />a 50 meter by 1 meter quadrat constructed along the axis of the cover <br />transect. The number of shrubs within the quadrat was determined by <br />species. Indivitlual stems were counted for all shrubs except mountain <br />• snowberry Synphuzic¢zpun u.zeuphi.(un and Saskatoon serviceberry Ame.(anchiea <br />alni~uL~a, which were inventoried by individual clumps. <br />Tree densities were estimated from a 50 meter by 5 meter <br />quadrat along the axis of the cover transect. The number of frees <br />within the quadrat was recorded by species. <br />Sample adequacy for density was calculated using the formula <br />as presented above Ifor cover) except that mean density and variance <br />were substituted for mean cover and variance. <br />2.3.3 Collection and Analysis of Production Dala <br />Rectangular gluts 1 meter by 4 meters and 1 meter by 2 meters <br />were used for production estimates in the Juniper Woodland and Mountain <br />Shrubland, respectively. The current year's growth of all herbaceous <br />plants was clipped. All graminoids were cut and sorted by individual <br />species while fortis were combined into a single category. Each produc- <br />tion plot yielded one sample. <br />In the laboratory, clippings were oven-dried at 105oC for <br />24 hours and weighed to the nearest tenth of a gram. Data were recorded <br />as grams per 4 square meters Ig/4 m21 For the Juniper Woodland and as <br />grams per 2 square meters Ig/2 m21 for the Mountain Shrubland. The <br />production estimates were also converted fo pounds per acre Ilbs/A1. <br /> <br />-3- <br />