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    Author(s): Carl L. Wambolt; Trista L. Hoffman
    Date: 2001
    Source: In: McArthur, E. Durant; Fairbanks, Daniel J., comps. Shrubland ecosystem genetics and biodiversity: proceedings; 2000 June 13-15; Provo, UT. Proc. RMRS-P-21. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 330-335.
    Publication Series: Proceedings (P)
    Station: Rocky Mountain Research Station
    PDF: View PDF  (242.26 KB)

    Description

    This study was conducted within the Gardiner Basin, an especially critical wintering area for native ungulates utilizing the Northern Yellowstone Winter Range. Mountain big sagebrush plants on 33 sites were classified as large (≥22 cm canopy cover), small (<22 cm canopy cover), or dead and then aged by counting growth rings. Large and small plants averaged 32 and 6 years old, respectively. Nearly half of the small plants were 5 years old, the result of optimal conditions for establishment in 1988, the year large wildfires burned much of Yellowstone National Park. Dead plants averaged 41 years of age. A bimodal peak in establishment of mountain big sagebrush corresponded with two large reductions in the Northern Yellowstone elk population.

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    Citation

    Wambolt, Carl L.; Hoffman, Trista L. 2001. Mountain big sagebrush age distribution and relationships on the northern Yellowstone Winter Range. In: McArthur, E. Durant; Fairbanks, Daniel J., comps. Shrubland ecosystem genetics and biodiversity: proceedings; 2000 June 13-15; Provo, UT. Proc. RMRS-P-21. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 330-335.

    Keywords

    wildland shrubs, genetics, biodiversity, disturbance, ecophysiology, community ecology

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