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Filtering by: Subject Sagebrush steppe ecology Contributor advisor sim 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:

shrub in North America. It is the dominant shrub characterizing the Intermountain Sagebrush Steppe
Sugar application and nitrogen pools in Wyoming big sagebrush communities and exotic annual grasslands

Creator:

Witwicki, Dana L.

Abstract:

Within A rtemisia tridentata ssp. wyomingensis Nutt. (Wyoming big sagebrush) communities of the Great Basin, lands dominated by the exotic annual grass Bromus tectorum L. (cheatgrass) are increasing at an alarming rate. Carbon applications, which reduce plant-available soil N, have been suggested as a way to give native vegetation a...

Resource Type:

Masters Thesis

Full Text:

that prevents succession to sagebrush steppe, making restoration difficult (Laycock 1991 ). To