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Filtering by: Creator Svejcar, Tony J. Advisor Miller, Richard F. Advisor Doescher, Paul S.

Response of Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) to defoliation of understory grasses and drought

Creator:

Purrington, Teal Mackenzie

Abstract:

Water potential, leaf conductance, growth, nitrogen content, and seedling survival of Wyoming Big Sagebrush (Artemisia tridentata ssp. wyomingensis) following defoliation of the herbaceous understory were assessed during two growing seasons. Precipitation was 107% and 63% of the long-term mean (283 mm) in 1989 and 1990, respectively, which presented an opportunity...

Resource Type:

Masters Thesis

Full Text:

deepest thanks for my positive experience here as a graduate student. I am also grateful to Dr. Tony
Community structure of old-growth Juniperus occidentalis woodlands

Creator:

Waichler, Wendy Sims

Abstract:

Knowledge of old-growth Juniperus occidentalis woodlands, which occur in central and eastern Oregon, is limited. Wise management of these woodlands necessitates a better understanding of the community ecology. The community structure of woodlands at seven sites in three areas of central Oregon was studied. Measurements taken at nine plots per...

Resource Type:

Masters Thesis

Full Text:

richness in all vegetative layers, variability within and between sites, and comparison of J
Modeling sage-grouse habitat using a state-and-transition model

Creator:

Evers, Louisa

Abstract:

Habitat for wildlife species that depend on sagebrush ecosystems is of great management concern. Evaluating how management activities and climate change may affect the abundance of moderate and high-quality habitat necessitates the development of models that examine vegetation dynamics, but modeling tools for rangeland systems are limited. I developed state-and-transition...

Resource Type:

Dissertation