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Ecological effects of post-wildfire management activities (salvage-logging and grass-seeding) on vegetation composition, diversity, biomass, and growth and survival of Pinus ponderosa and Purshia tridentata

Creator:: Sexton, Timothy Ogden
Abstract:: Salvage-logging and artificial seeding of grass following wildfire are common practices in coniferous forests of the western United States, yet few studies have quantified the ecological effects of these post-fire activities. The effects of post-wildfire salvage-logging and grass-seeding on vegetation composition, aboveground biomass, and growth and survival of Pinus ponderosa...
Resource Type:: Masters Thesis

The influence of grazing systems on the performance and diet of yearling cattle

Creator:: Berry, Timothy James
Abstract:: Research was conducted at the Starkey Experimental Forest and Range in northeastern Oregon to determine cattle performance, diet quality, botanical composition of forage ingested, and production and utilization among rest-rotation, season-long, and deferred rotation grazing systems. The grazing season lasted from June 20 to October 10 of each year. Cows...
Resource Type:: Masters Thesis
Full Text:: diet of yearling cattle AN ABSTRACT OF THE THESIS OF Timothy James Berry for the degree of Master

The effect of grazing interval on forage quality and production of meadow foxtail

Creator:: Wenick, Jess J.
Abstract:: For the last fifty years, meadow foxtail (Alopecurus pratensis L.) has been invading native flood meadows throughout the Harney Basin in southeastern Oregon. The expansion of this grass species has been the result of its broad climatic requirements and ability to withstand drought while thriving in saturated soil conditions for...
Resource Type:: Masters Thesis
Full Text:: content of reed canarygrass, meadow foxtail and timothy fertilized with nitrogen. Canadian J. Plant Sci

Soil conditions along a hydrologic gradient and successional dynamics in a grazed and ungrazed montane riparian ecosystem

Creator:: Green, Douglas M. (Douglas Mitchell)
Resource Type:: Dissertation
Full Text:: Montane Riparian Ecosystem. Abstract approved: Redacted for Privacy J. Boone Kauffman Vegetation

Ecology of the Salix and Populus species of the Crooked River National Grassland

Creator:: Busse, Kathryn Grace
Abstract:: Riparian communities dominated by members of the Salicaceae (Salix lasiandra, S. lutea, S. lemmonii, Populus trichocarpa, P. tremuloides and S. exiqua) were studied at the Crooked River National Grassland in central Oregon. The objectives of this study were to examine the relationships between the Salix and Populus species and microsite...
Resource Type:: Masters Thesis

Historical land use and its impact on Oak Creek, Oregon

Creator:: Yamaguchi, Keiko, 1964-
Abstract:: The purposes of this study were:1) to review the land use history of Oak Creek watershed since European settlement. And 2) to consider the human-caused impacts and their effects associated with different land uses. The study area was classified into three land use patterns: residential,agricultural, and forested areas.Since the European...
Resource Type:: Masters Thesis
Full Text:: . Cultivation of wheat, barley, corn, potatoes, and timothy hay occurred only to supply home needs due to the

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:: , rumen, and feces of sheep grazing a beauty cinquefoil /velvet lupine Kentucky bluegrass /timothy com

Diet and feeding behavior of cattle at risk to dietary acute bovine pulmonary emphysema (DABPE)

Creator:: Elliott, Jon Carner
Abstract:: The objectives of this study were to determine the diets of cattle at risk to DABPE on stress and inciting pastures and to determine if segregated feeding groups of cattle displayed differential susceptibility to DABPE. Stress pastures were classified and mapped by plant communities and segregated feeding group areas. Cattle...
Resource Type:: Masters Thesis
Full Text:: pastures were alfalfa, common timothy, smooth brome, Kentucky bluegrass, and reed canarygrass. Twenty

Spring, summer and fall use by cattle and big game on foothill rangelands

Creator:: Miller, Richard F.
Abstract:: The objectives of this study were to evaluate environmental factors influencing use of several plant communities by cattle, elk and deer; determine under story production by plant species and the amount utilized by cattle, elk and deer in certain plant communities; evaluate the interactions of range use between cattle, elk...
Resource Type:: Masters Thesis
Full Text:: members on my committee, Dr. William C. Krueger, Dr, Martin Vavra, Dr, Paul A. Vohs, J ., Dr. Dillard H

Effect of site potential, season and plant part on the quality and yield of cereal aftermath

Creator:: Mee, Catherine
Abstract:: The objectives of this study were to evaluate the effects of site potential, season and plant part on percent crude protein, percent digestibility of dry matter and yield of cereal residues. Three cereal types, club wheat (Triticum aestivum) tall, bearded wheat (T. aestivum), and barley Hordeum vulgare) were examined. Stress...
Resource Type:: Masters Thesis
Full Text:: ) studied the protein content of stems and leaves of timothy Phleum pratense), orchardgrass (Dactylis

ScholarsArchive@OSU

Ecological effects of post-wildfire management activities (salvage-logging and grass-seeding) on vegetation composition, diversity, biomass, and growth and survival of Pinus ponderosa and Purshia tridentata

The influence of grazing systems on the performance and diet of yearling cattle

The effect of grazing interval on forage quality and production of meadow foxtail

Soil conditions along a hydrologic gradient and successional dynamics in a grazed and ungrazed montane riparian ecosystem

Ecology of the Salix and Populus species of the Crooked River National Grassland

Historical land use and its impact on Oak Creek, Oregon

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

Diet and feeding behavior of cattle at risk to dietary acute bovine pulmonary emphysema (DABPE)

Spring, summer and fall use by cattle and big game on foothill rangelands

Effect of site potential, season and plant part on the quality and yield of cereal aftermath

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