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Vegetation response to prescribed fire in mountain big sagebrush ecosystems at Lava Beds National Monument, California

Creator:

Ellsworth, Lisa M.

Abstract:

Anthropogenic land use alterations such as livestock grazing and fire suppression have greatly altered sagebrush grasslands of the Great Basin, facilitating invasion of exotic annuals, increases in woody species, and losses of native species. Much of the current research surrounding wildland and prescribed fire in sagebrush dominated ecosystems has focused...

Resource Type:

Masters Thesis

Full Text:

him always made me feel lucky to be in this field of research. Dr. Paul Doescher deserves special
Evidence of a trophic cascade among wolves, elk, and aspen in Yellowstone National Park, USA

Creator:

Halofsky, Joshua S.

Abstract:

According to general top-down trophic theory, in the presence of carnivores, herbivore behavior and/or densities could change and result in an overall decrease in herbivory on plant communities. In this dissertation, I examined the potential relationship between gray wolf (Canis lupus) presence and absence on elk (Cervus elaphus) herbivory of...

Resource Type:

Dissertation

Full Text:

Joshua S. Halofsky for the degree of Doctor of Philosophy in Forest Resources presented on April 19