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Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon

Creator:: McInnis, Michael Lindsay
Resource Type:: Dissertation

A comparison of four methods used in determining the diets of large herbivores

Creator:: McInnis, Michael Lindsay
Abstract:: Esophageal fistulation, stomach content analysis, fecal analysis, and ocular-estimate-by-plot are four of the most publicized methods of determining the diets of large herbivores. The principal objective of this study was to compare the relative values of each of these methods based upon information collected from bi-fistulated (esophageal and rumen) sheep...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Michael Lindsay McInnis for the

Botanical composition and diet quality of beef cattle grazing at three stocking rates following fuels reduction in mixed conifer forests

Creator:: Clark, Abe A.
Abstract:: An experiment was conducted to evaluate the influence of forest fuels reduction on the diet quality, botanical composition, relative preference, and foraging efficiency of beef cattle grazing at different stocking rates. A split plot factorial design was used, with the whole plots (3 ha) being fuel reduced or no treatment...
Resource Type:: Masters Thesis
Full Text:: . Johnson, K. M. Stewart, and J. G. Kie. 2005. Spatial and temporal interactions of elk, mule deer, and

Influence of ruminant digestive processes on germination of ingested seeds

Creator:: Lowry, Amaya A.
Abstract:: Managing cattle to disseminate seeds of desirable plants, or alternatively, to restrict weed seed contamination on rangelands is of interest to managers. Four experiments were conducted to determine effects of ruminant digestion on germination of ingested seeds. A number of plant species representing a variety of seed size and seed...
Resource Type:: Masters Thesis
Full Text:: Germination of Ingested Seeds. Abstract approved: Michael L. McInnis Managing cattle to disseminate seeds

The effects of defoliation on yellow starthistle (Centaurea solstitialis L.) reproductive capacity

Creator:: Schumacher, Stacy
Abstract:: Yellow starthistle (Centaurea solstitialis L.) is an introduced Asteraceae that has become established on 10 million acres in the Pacific Northwest and California. This weed functions as an annual or short-lived perennial and depends on seeds for reproduction. Strategies of control that reduce plant fitness or lower seed production or...
Resource Type:: Masters Thesis
Full Text:: where annual precipitation varies between 25 to 100 cm, and elevation ranges from sea level to 2500 m

The economic feasibility of off-stream water and salt to reduce grazing pressure in riparian areas

Creator:: Stillings, Amy M.
Abstract:: Properly functioning riparian systems are vital to the health of watersheds and provide an important forage and habitat resource for livestock and wildlife. Riparian grazing management strategies that are economically feasible and achieve environmental goals are needed by resource managers and livestock producers. The objective of this thesis was to...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Amy M. Stillings for the degree of

Yellow starthistle : ecology and management on Pacific Northwest rangelands

Creator:: Oregon State University. Extension Service, Larson, Larry, Sheley, R., McInnis, M., and Kiemnec, Gary L.
Abstract:: Yellow starthistle (Centaurea solstitialis L.) is a member of the knapweed (Centaurea L.) complex. It is poor forage for all livestock and causes “chewing disease,” a nervous disorder, in horses. Yellow starthistle infests millions of acres in California and the Pacific Northwest. Infestations range from scattered plants to dense stands...
Resource Type:: Technical Report
Full Text:: Ecology and Management on Pacific Northwest Rangelands Yellow Starthistle L. Larson, R. Sheley, M. McInnis

Interactions of cattle and chinook salmon

Creator:: Ballard, Teena M.
Abstract:: Spring chinook salmon spawning occurs in late summer when it is common for cattle to be present in pastures that have streams where fish spawning occurs. This two-year study addressed three main objectives relative to behavioral interactions between cattle and spring chinook salmon during the spawning life history stage. These...
Resource Type:: Masters Thesis
Full Text:: Privacy AN ABSTRACT OF THE THESIS OF Teena M. Ballard for the degree ofMaster of Science in Rangeland

Evidence, explanations, and recommendations for teachers' field trip strategies

Creator:: Rebar, Bryan M.
Abstract:: Field trips are well recognized by researchers as an educational approach with the potential to complement and enhance classroom science teaching by exposing students to unique activities, resources, and content in informal settings. The following investigation addresses teachers' field trip practices in three related manuscripts: (1) A study examining the...
Resource Type:: Dissertation
Full Text:: ), 283-290. 10 Swan, M. (1975). Forerunners of environmental education. In N. McInnis & D

Non-native and native plant species distributions and variability along an elevation gradient in the Wallowa Mountains, Oregon

Creator:: Averett, Joshua P.
Abstract:: Invasion by non-native plants into natural areas is an important component of global change that threatens biodiversity and ecosystem structure and function. Mountains are currently among the least invaded ecosystems, however, these biodiversity hotspots are increasingly under threat of exotic plant invasion. Evaluation of plant species distribution patterns in mountain...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Timothy DelCurto, Michael M. Borman Invasion by non-native plants into natural areas is an

ScholarsArchive@OSU

Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon

A comparison of four methods used in determining the diets of large herbivores

Botanical composition and diet quality of beef cattle grazing at three stocking rates following fuels reduction in mixed conifer forests

Influence of ruminant digestive processes on germination of ingested seeds

The effects of defoliation on yellow starthistle (Centaurea solstitialis L.) reproductive capacity

The economic feasibility of off-stream water and salt to reduce grazing pressure in riparian areas

Yellow starthistle : ecology and management on Pacific Northwest rangelands

Interactions of cattle and chinook salmon

Evidence, explanations, and recommendations for teachers' field trip strategies

Non-native and native plant species distributions and variability along an elevation gradient in the Wallowa Mountains, Oregon

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