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Filtering by: Creator Kearns, Richard Seng Academic Affiliation Fisheries and Wildlife Rights Statement In Copyright

Direct and indirect effects of livestock grazing intensity on processes regulating grassland bird populations

Creator:

Johnson, Tracey N.

Abstract:

In grasslands, grazing by large ungulates can influence vegetation structure, composition, primary productivity, and ultimately, ecosystem functioning. While grazing represents a complex disturbance, grazing intensity largely determines the effects of grazing on vegetation. Structural and compositional changes in the plant community caused by grazing could have bottom-up effects on species...

Resource Type:

Dissertation

Full Text:

committee members for their time, effort, guidance, and ideas: Drs. Kate Dugger, Richard Miller, David
Impacts of Range Management Decisions on Native Pollinators: Innovative Grazing Practices and Riparian Restoration

Creator:

Mitchell, Scott R.

Abstract:

Animal pollination is critical to plant reproduction in agricultural and wildland ecosystems. Much of the production of seeds and fruits in natural areas, which underlie many food webs, depends on pollination services by insects. The taxon responsible for delivering the bulk of these services in most temperate systems is bees....

Resource Type:

Masters Thesis

Full Text:

ABSTRACT OF THE THESIS OF Scott Richard Mitchell for the degree of Master of Science in Wildlife
Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon

Creator:

Wiens, J. David

Abstract:

The federally threatened northern spotted owl (Strix occidentalis caurina) is the focus of intensive conservation efforts that have led to much forested land being reserved as habitat for the owl and associated wildlife species throughout the Pacific Northwest of the United States. Recently, however, a relatively new threat to spotted...

Resource Type:

Dissertation

Full Text:

, Richard Leach, and Justin Crawford for their field assistance. Scott Graham collected and analyzed