Effects of Grazing On Arabis Fecunda 1993 Progress Report volume 1993
Effects of Grazing On Arabis Fecunda 1993 Progress Report volume 1993
Peter Lesica
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Pull in on the small two-track going east just past the cemetery. Site is on the hill to the south. Aspect: ca. 220, Slope: 30 Elevation: 5, 800 ft. METHODS . -- Field Methods The Quartz Hill and Thompson's Corner exclosures were established and read on 11 June 1991. They were read again on 7 June 1993. The Dewey . Cemetery exclosure was established and read on 7 June 1993. There is one exclosure plot and one control plot at each site. Each exclosure plot is 6 ft X 6 ft, marked at the four corn...ers by metal stakes and completely covered by firm wire mesh. Control plots are placed near by the exclosure and are identical except they are uncovered. Each plot is divided into four equal subplots (3 X 3 ft) to facilitate counting. In each subplot estimate the basal cover of rock, moss- lichen, bare ground and vegetation, and estimate the canopy cover of grass, forbs and shrubs to the nearest 5%. In each subplot count the number of Arabis fecunda plants in each of three size classes: Seedling (S) : single rosette smaller that a penny Rosette (R) : single rosette larger than a penny or multiple rosettes Fruiting (F) : plants with flowers or fruits Data Analysis Changes in basal or vegetation cover between exclosure and control plots can be assessed by visual examination of the summary tables.
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