Index Catalog // ScholarsArchive@OSU

Ecological interrelationships between summer resident gray whales (Eschrichtius robustus) and their prey, mysid shrimp (Holmesimysis sculpta and Neomysis rayi) along the central Oregon coast

Creator:: Newell, Carrie
Abstract:: The ecological interaction between the largest coastal predator, the gray whale (Eschrichtius robustus) and the most abundant shallow water marcrozooplanktonic prey, mysids, were examined in a poorly-understood predator-prey relationship along the central Oregon coast. From 2002-2008, 83 seasonal gray whales were identified. These whales returned each year around Memorial Day...
Resource Type:: Masters Thesis
Full Text:: Oregon Coast Abstract approved: _________________________________ Timothy J. Cowles The

Phytoplankton fluorescence and survival below the euphotic zone in the California current system

Creator:: Murphy, Alice M.
Resource Type:: Masters Thesis
Full Text:: . Murphy and Timothy J. Cowles College of Oceanic and Atmospheric Sciences Oregon State University

Spatial structure of the physical and biological distributions across the Antarctic Polar Front in austral spring and summer

Creator:: Howard, Cidney
Abstract:: Mesoscale surveys to examine the relationship between the physical processes and biological response along the Antarctic Polar Front (PF) were conducted as part of the US JGOFS Southern Ocean Program during austral spring and summer 1997/98. Multiple crossings of the PF near 170° W, using a towed undulating instrument, provided...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: y J. Cowles Mesoscale surveys to examine the relationship between the physical

Comparing the hydrography and copepod community structure of the continental shelf ecosystems of Washington and Oregon, USA from 1998 to 2009 : can a single transect serve as an index of ocean conditions over a broader area?

Creator:: Lamb, Jesse F.
Abstract:: Bi-weekly sampling of zooplankton and environmental parameters was conducted along a cross-shelf transect off the coast of Newport, OR, USA (44.65°N) from 1996 to present. Results have demonstrated the feasibility of using copepod community structure as an early indicator of ecosystem response to seasonal and large scale environmental changes in...
Resource Type:: Masters Thesis
Full Text:: a Broader Area? Abstract approved: Timothy J. Cowles

The swimming behavior of the copepod Calanus marshallae under various food conditions

Creator:: Krefft, Kevin P.
Abstract:: How certain aspects of the swimming behavior of the copepod Calanus marshallae vary as a function of different food conditions of Thalassiosira weissflogii was examined. A two video camera recording and controlled food environment aquaria system were used to record long-term swimming behavior and to determine 3- dimensional swimming paths...
Resource Type:: Masters Thesis

The Costa Rica Dome : a study of physics, zooplankton and blue whales

Creator:: Matteson, Robyn S.
Abstract:: At the Costa Rica Dome (CRD), upwelling associated with cyclonic circulation and the presence of a shallow thermocline support a highly productive biological habitat, exploited by marine fauna at several trophic levels. During January 2008, a cruise to the CRD by the R/V Pacific Storm was conducted to relocate blue...
Resource Type:: Masters Thesis
Full Text:: the members of my thesis committee: Bruce R. Mate, Kelly J. Benoit-Bird, Timothy Cowles and Staci

A study of predation on Notoplana acticola Boone, 1929 and Cucumaria curata Cowles, 1907 in mussel beds using a serological technique

Creator:: Kent, Bretton Wayne
Resource Type:: Masters Thesis
Full Text:: and Cucumaria curata Cowles, 1907 in mussel beds using a serological technique Best scan available

Zooplankton variability in the California current, 1951-1982

Creator:: Roesler, Collin Stevens
Resource Type:: Masters Thesis
Full Text:: advisors, Dudley Chelton and Tim Cowles for helping me to bridge the gap between physics and biology

Effects of fiber electrostatic cling and moisture regain on Timothy grass pollen attraction

Creator:: Vaughn, Reyna J.
Abstract:: People will spend a large amount of their lifetime indoors where the air is filled with both indoor and outdoor allergens. Exposure to allergens can have a range of effects on the health of building occupants. Textiles make up a vast majority of the surfaces, such as draperies, sofas, pillows,...
Resource Type:: Masters Thesis
Full Text:: Timothy Grass Pollen Attraction AN ABSTRACT OF THE THESIS OF Reyna J. Vaughn for the degree of

Effects of forage quality and type of protein supplement on intake and digestibility in beef steers and performance of postpartum beef cows

Creator:: White, Jenny J.
Abstract:: Two experiments were conducted to evaluate the effects of forage quality and supplemental undegradable intake protein (UIP) level on intake, digestibility, and performance of beef cattle. In Exp. 1, five ruminally cannulated steers (BW = 456 ± 6 kg) were used in a 6 x 5 incomplete Latin square with...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jenny J. White for the degree of

Influence of age, condition, nutrition and season on serum and urine chemistry in Rocky Mountain elk

Creator:: Quinlan-Murphy, Lonnie J.
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Lonnie J. Quinlan-Murphy for the

Do vigorous young forests reduce streamflow? Results from up to 54 years of streamflow records in eight paired-watershed experiments in the H. J. Andrews and South Umpqua Experimental Forests

Creator:: Perry, Timothy D.
Abstract:: This study quantified the magnitude and timing of summer streamflow deficits in paired-watershed experiments in the Cascade Range of Oregon where mature and old-growth conifer forests were subjected to clearcutting, patch cutting, and overstory thinning treatments in the 1960s and 1970s. Hydrologic effects of clearcutting, small-patch cutting, and overstory thinning...
Resource Type:: Masters Thesis
Full Text:: OF THE THESIS OF Timothy D. Perry for the degree of Master of Science in Geography presented

An econometric analysis of the demand for selected agricultural inputs in Oregon

Creator:: Yadav, Ram Prakash
Abstract:: The objective of this study is to analyze empirically the demand structure for the following important farm production inputs in Oregon: hired labor, chemical fertilizer, farm machinery, repairs and operating costs of motor vehicles and other machinery designated as "machinery supplies," purchased feed and miscellaneous inputs. Twenty-year data (1950-69 except...
Resource Type:: Masters Thesis
Full Text:: graduate committee, Dr. Timothy Hammonds, who introduced me to econometrics in the classroom and who

The influence of herbivore generated inputs on nutrient cycling and soil processes in a lower montane tropical rain forest of Puerto Rico

Creator:: Fonte, Steven J.
Abstract:: The role of insect herbivores in the nutrient cycling dynamics of forest ecosystems remains poorly understood. Although past research in herbivory has focused primarily on the deleterious effects that insects can have on tree growth and mortality, the overall effects of herbivory are more complex. Herbivores have the potential to...
Resource Type:: Masters Thesis
Full Text:: Disturbance in a Tropical Forest Ecosystem Steven J. Fonte and Timothy D. Schowalter Keywords: litterfall

Factors influencing diet composition of beef cattle grazing mixed conifer mountain riparian areas

Creator:: Darambazar, Enkhjargal
Abstract:: Two trials were conducted to evaluate changes in the quantity, quality, and moisture of available forage in the pasture, and shrub utilization by cattle during a 30-d late summer grazing period (Trial 1) and the effect of cow age (experience) on grazing distribution and diet composition (Trial 2) in mountain...
Resource Type:: Masters Thesis
Full Text:: : Timothy Two trials were conducted to evaluate changes in the quantity, quality, and moisture of available

Grass straw residues as a feed source for wintering beef cattle

Creator:: Stamm, Michele M.
Resource Type:: Masters Thesis
Full Text:: Cattle Abstract approved: Redacted for Privacy Dr. Timothy E4ICurto A survey was conducted during the

The influence of supplemental alfalfa quality on the intake and utilization of low-quality roughages by beef cattle

Creator:: Weder, Christoph E.
Abstract:: Three experiments were conducted to evaluate the influence of quality of supplemental alfalfa quality on beef cattle consuming low-quality meadow grass (MG) roughages. Fifteen steers (250 kg) were assigned randomly to one of three treatments: 1) meadow grass (5.2% CP), no supplement (MNS); 2) meadow grass plus high quality alfalfa...
Resource Type:: Masters Thesis
Full Text:: approved: Timothy DelCurto Three experiments were conducted to evaluate the influence of quality of

Management of stockpiled forages and optimal use of supplements by beef cattle while consuming low-quality forages

Creator:: Suverly, Norman A.
Abstract:: Three studies were conducted to evaluate: 1) rotationally grazed forage for late-summer stockpiling; 2) effects of lactation on self-fed supplement intake; and 3) influence of cow age on hand-fed supplement intake. For the first study, treatments consisted of non grazed, 2X and 3X grazed. Crude protein of forage grazed 3X...
Resource Type:: Masters Thesis
Full Text:: Forages Abstract approved: Timothy DelCurto Three studies were conducted to evaluate: 1

The influence of cow age on grazing distribution and utilization of mountain riparian areas and adjacent uplands

Creator:: Morrison, Julie A.
Abstract:: The objective of this study was to evaluate the influence of cow age on grazing distribution relative to mountain riparian areas. In each of two years, sixty cow-calf pairs were stratified by age into the following treatments: 1) thirty first calf heifers (442 kg, body condition score (BCS)=4.5), and 2)...
Resource Type:: Masters Thesis

The role of processors in the improvement and expansion of fruit crop production in the western state of Nigeria ; a case study

Creator:: Olufokunbi, Banwo
Abstract:: Four assumptions-- 1. That there is an effective and potential demand for processed fruit products in the Western State of Nigeria. 2. That current supply of raw materials in the Western State of Nigeria is more than sufficient to meet the increased demand which the short-term addition or expansion (or...
Resource Type:: Masters Thesis
Full Text:: - cJjolnd lvO\J< I ITcJ- (Major) (Date) Title: THE ROLE OF PROCESSORS IN THE IMPROVEMENT AND

Influence of stocking density on grazing beef cattle performance, diet composition foraging efficiency, and diet quality on a late-spring early-summer native bunchgrass prairie

Creator:: Wyffels, Samuel A.
Abstract:: This study evaluated the influence of cattle stocking density on botanical composition of diet, diet preference, and cattle performance on the Zumwalt Prairie in Northeastern Oregon. In each of two years, 192 cow-calf pairs (549.27 kg, BCS = 4.89) and 48 yearling heifers (383.34 kg, BCS = 5.02) were stratified...
Resource Type:: Masters Thesis
Full Text:: Early- Summer Native Bunchgrass Prairie. Abstract approved: Timothy DelCurto ABSTRACT

Early macronutrient uptake and partitioning in Glycine max L. Merr

Creator:: Schuttler, Patti L.
Abstract:: Soybeans were grown in hydroponic solutions and in perlite to devise procedures to measure plant mineral accumulation and solution depletion over time. Electron emission spectrometry and micro-Kjeldahl-autoanalyzer analytic techniques were used to monitor mineral content of individual plants and their corresponding solutions. An automated computer assisted system of converting raw...
Resource Type:: Masters Thesis
Full Text:: UPTAKE AND PARTITIONING IN GLYCINE MAX L. Merr. Abstract approved: n. i i. ~ •y "*''' ' —1 K—i J

Influence of geotextile permeability on stability of rubble shore protection structures

Creator:: Dodson, Timothy Joe
Abstract:: The effect of geotextile permeability on the stability of rubble shore protection structures was investigated by conducting large-scale wave tank tests on a revetment. Pore pressure within the sandy gravel core of the revetment were measured in one phase of the experiment, and stability of armor units on the structure...
Resource Type:: Masters Thesis
Full Text:: rubble shore protection structures AN ABSTRACT OF THE THESIS OF Timothy Joe Dodson for the degree of

Investigation of combustor and fuel preparation requirements for a combined-cycle wood fired power plant

Creator:: Bauer, Timothy Lee
Abstract:: The Pacific Northwest is a particularly good candidate for a power plant fired with wood since the wood products industry is so important in the area. The combined cycle concept for such a plant has increased in popularity due to the generally greater efficiency of the gas turbine part of...
Resource Type:: Masters Thesis
Full Text:: requirements for a combined-cycle wood fired power plant AN ABSTRACT OF THE THESIS OF Timothy Lee Bauer for

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

Habitat Use of Female Columbian Black-tailed Deer in Western Oregon

Creator:: Schrautemeier, Timothy J.
Abstract:: Columbian black-tailed deer (Odocoileus hemionus columbianus) are important economically, ecologically, and culturally as an indigenous species in western Oregon. Oregon Department of Fish and Wildlife (ODFW) observed declines in black-tailed deer populations since the late 1980’s and attributes these declines to reduction in quality and availability of habitat, following the...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Timothy J

Natural convection from a horizontal cylinder parallel to a heated vertical wall

Creator:: McCoy, Timothy J.
Abstract:: Heat transfer measurements have been made from a long (L/D = 15) horizontal cylinder in water parallel to a heated vertical wall. The cylinder and wall boundary conditions were isothermal, and they were maintained at equal temperatures. The investigation covered Rayleigh numbers based on cylinder diameter from 400,000 to 10,000,000....
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Timothy J. McCoy for the degree

SCALE 6 (TRITON) Simulations of Fission Product Gamma Line Emissions and their Comparison to Plutonium and Uranium Measurements

Creator:: Sanchez, Timothy J.
Abstract:: Thin foil samples of special nuclear materials (SNMs) were irradiated for 60s using a Mark TRIGA II reactor, and their associated gamma emissions were recorded with a count time of 60s following irradiation. A rapid pneumatic transfer system was used to irradiate the samples in front of beam port #4....
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Timothy J

Reverse engineering, modeling, and redesign of a vibratory conveyor

Creator:: Foglesong, Timothy J.
Abstract:: Some successful products are still developed and produced without the benefit of modern design techniques. One such product is a vibratory conveyor that has been developed largely through prototype iteration. The manufacturer has collaborated with Oregon State University to introduce model-based design into the development process. This research details a...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Timothy J Foglesong for the

The solubility of naphthalene in supercritical carbon dioxide : a comparison of the compressed-gas and expanded-liquid treatments

Creator:: Jones, Timothy J.
Resource Type:: Masters Thesis
Full Text:: Timothy J. Jones for the degree of Master of Science in Chemical Engineering presented on August 29, 1986

Municipal sewerage system resilience : disturbances and management strategies in Cook County, IL

Creator:: Oravec, Timothy J.
Abstract:: Sewerage infrastructure, including wastewater treatment facilities and conveyance pipes, is reaching the end of its useful life throughout the United States. Aging infrastructure may be more susceptible to fracturing and collapses due to deterioration. Further, sewerage infrastructure is usually designed to discharge untreated wastewater or stormwater into nearby waterways during...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Timothy J. Oravec for the degree of Master of Science in Water

Potential barriers to movements and habitat selection of pygmy rabbits (Brachylagus idahoensis) after experimental translocation

Creator:: Lawes, Timothy J. (Timothy James)
Abstract:: I assessed potential barriers to dispersal using homing tendency and investigated the movements and settlement site selection of pygmy rabbits (Brachylagus idahoensis) after short distance translocations in southeastern Oregon from June – December 2008. I captured, radio marked, and translocated 59 pygmy rabbits 1-2 km across landscapes with (1) continuous...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Timothy J. Lawes for the degree of Master of Science in Wildlife Science

Host selection and wood channelization by beetles in conifer logs in western Oregon

Creator:: Zhong, He
Abstract:: The host preferences and wood channelization rates of scolytid and cerambycid beetles were studied at the H. J. Andrews Experimental Forest (Lane County, Oregon) during 1986 and 1987. Attack density and gallery volumes were measured in fall-felled experimental logs of four major conifer species: Douglas-fir (Pseudotsuga mensiesii (Mirb.) Franco), western...
Resource Type:: Masters Thesis
Full Text:: the H. J. Andrews Experimental Forest (Lane County, Oregon) during 1986 and 1987. Attack density and

Soil biochemical measures as ecological indicators across agricultural and forest ecosystems of Oregon

Creator:: Knight, Timothy R.
Abstract:: A variety of soil properties have been proposed and tested as potential indicators of soil quality. This study was conducted in an effort to produce a standardized soil quality index for systems in Oregon. Soils in both forested and agricultural systems were sampled in a wide variety of locations, climates,...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Timothy R. Knight for the degree

Geology of the Ventura and Soledad Basins in the vicinity of Castaic, Los Angeles County, California

Creator:: Stitt, Leonard Timothy
Abstract:: Surface and subsurface mapping are combined to determine the geologic history along the San Gabriel fault near the town of Castaic. Palomas Gneiss, Whitaker Granodiorite, and Pelona Schist are basement terranes encountered in the subsurface. West of the San Gabriel fault, basement is unconformably overlain by marine middle to late...
Resource Type:: Masters Thesis

Using discrete-event simulation to study the influence of log yard sorting on sawmill processing efficiency of small-diameter timber

Creator:: Pinon, Olivia J.
Abstract:: A sawmill is similar to other manufacturing enterprises when it comes to making decisions, scheduling production and meeting customer demands. In order to help sawmills achieve their goals, and because there is such a high degree of variability in the raw material used in this industry, computer simulation has proven...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Olivia J. Pinon for the degree of

Arthropod community structure in regenerating Douglas-fir and red alder forests : influences of geography, tree diversity and density

Creator:: Schaerer, Brett L.
Abstract:: The structuring of canopy arthropod communities was reviewed and investigated in relation to tree species diversity and its component factors, interspersion of different species and density of each tree species. Fifteen treatments of Douglas-fir (Pseudotsuga menziesii) and red alder (Alnus rubra) (various densities and proportions of each) were randomly assigned...
Resource Type:: Masters Thesis
Full Text:: , Tree Diversity and Density Abstract approved: Timothy D. Schowalter The structuring of canopy

Accuracy versus cost in distributed data mining

Creator:: Deutschman, Stephanie
Abstract:: A basic tradeoff to consider when designing a distributed data-mining framework is the need for a compromise between the cost of communication and computation resources and the accuracy of the mining results. This is essentially a decision of whether it is more efficient to communicate all of the data to...
Resource Type:: Masters Thesis
Full Text:: in Distributed Data Mining. Abstract approved: Timothy A. Budd A basic tradeoff to consider when

Differences between mineral analyses from cork spotted and extra fancy 'Anjou' pear fruit

Creator:: Curtis, Daniel W.
Abstract:: The feasibility of using a post harvest sampling time for fruit testing in Anjou pears was evaluated. The goal was to determine if a simple and rapid analysis of fruit tissues could be useful in identifying potentially weak fruit that could be marketed before the onset of the storage disorder...
Resource Type:: Masters Thesis
Full Text:: a threshold value would be useful in New Zealand, as well as elsewhere. J. Van der Boon has done

An evaluation of the Diagnosis and Recommendation Integrated System (DRIS) on hazelnuts (Corylus avellana) in Oregon

Creator:: Alkoshab, Othman
Abstract:: This study evaluates Beufil's Diagnosis and Recommendation Integrated System (DRIS) on hazelnuts. Although sufficiency ranges are currently the main approach for fertilizer recommendations in Oregon, DRIS enhanced nutritional interpretations, and might alter recommendations. Reference values (DRIS norms) were developed using 15 years of published and unpublished field data. DRIS indices...
Resource Type:: Masters Thesis
Full Text:: Schoo Date thesis is presented October 2r 1986 Typed by Harvey McCloud for Othman j^lkoshab

Macroarthropod communities on vine maple, red alder and sitka alder along riparian zones in the central western Cascade Range, Oregon

Creator:: Oboyski, Peter T.
Resource Type:: Masters Thesis
Full Text:: Cascade Range, Oregon. Abstract approved: Timothy D. Schowalter This study addresses the structure

The effects of moisture content and initial heterotrophic colonization on the decomposition of coarse woody debris

Creator:: Barker, Jason Scot
Abstract:: Previous research on coarse woody debris (CWD) indicated that moisture content and initial heterotrophic colonization of decaying wood can affect the decomposition process. Six heterotrophic treatments were created to simulate the effects of physical penetration of the bark and wood and the transmission of ascomycetes versus basidiomycetes into CWD. In...
Resource Type:: Masters Thesis
Full Text:: approved: Timothy D. Schowalter Previous research on coarse woody debris (CWD) indicated that moisture

Effect of crop load on mineral uptake and partitioning in D'Anjou pears

Creator:: Meddouri, Messaoud
Abstract:: Three thinning levels were applied to twenty-five-year-old D'Anjou pear trees in a completely randomized design with five single-tree replicates on June 2, 1985. Samples of wood, shoot leaves, shoot twigs, spur leaves, spur twigs and fruits were taken every month during the season of growth for mineral analysis. Sampling an...
Resource Type:: Masters Thesis
Full Text:: . Special thanks are extended to J. Wernz, A.R. Dixon, and K. Wilder for their help during the work in the

A study of forces on simulated heat exchange tubes immersed in a cold fluidized bed

Creator:: Donovan, Jerry Eugene
Abstract:: The object of this research, project was to study how different parameters effect the magnitude and frequency composition of forces exerted on simulated heat exchange tubes immersed in a cold fluidized bed. Two arrays of tubes were assembled with the tubes mounted in an equilateral triangular pitch pattern. The center...
Resource Type:: Masters Thesis
Full Text:: HEAT EXCHANGE TUBES IMMERSED IN A COLD FLUIDIZED BED Abstract approved: Redacted for Privacy (Timothy

Digital analysis of remotely sensed images for evaluating color in turfgrass

Creator:: Friedkin, William C., 1954-
Abstract:: Most conventional approaches to rating turf color for different turf varieties grown under similar conditions or for the same variety grown under different cultural conditions employ a visual subjective rating. By digitizing remotely sensed images acquired by use of a helium filled blimp and a Canon EOS camera, we were...
Resource Type:: Masters Thesis
Full Text:: Sensed Images for Evaluating Color in Turfgrass Abstract approved: . ^_ Timothy U Righetti

Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Creator:: Dombrosky, Scott A.
Abstract:: The impact of various factors on seed production in a Douglas-fir (Pseudotsuga menziesii) seed orchard in western Oregon was examined by monitoring the fate of seeds in thirty cones, stratified into three crown levels, on each of ten trees during the 1984 growing season. Cones were examined monthly between April...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS I would like to express my gratitude to my major professor, Dr. Timothy Schowalter, for his

Arthropod communities on understory plants in thinned and unthinned Douglas-fir forests in the Oregon Coast Range

Creator:: Doolittle, Alyssa M.
Abstract:: This study assessed the effects of thinning on arthropod communities on understory plants in the Central Oregon Coast Range. Arthropods were sampled from five understory plants in five pairs of thinned and unthinned, young (50-80 yrs), managed Douglas-fir stands, from late May to mid-July of 1998. Vine maple (Acer circinatum),...
Resource Type:: Masters Thesis

Simulating changing diameter distributions in a softwood sawmill

Creator:: Salichon, Maxence C.
Abstract:: Sawmills are very complex systems that involve many manufacturing processes. The variability of their raw material adds further to this complexity as each log has characteristics that determine its processing path. Therefore, computer simulation is a very useful technique for analyzing sawmill performance. This thesis describes a simulation computer model...
Resource Type:: Masters Thesis
Full Text:: professors, Dr. Charles C Brunner and Dr. Timothy C. Kennedy for their invaluable support, assistance and

A study of demand and supply relationships in the agricultural labor market

Creator:: Vathana, Chamnong
Abstract:: The objective of the study is to analyze empirically the demand for hired farm labor and the elasticities of substitution of capital for labor in the U.S., the Middle Atlantic region, the Pacific region, and in the states of California and Oregon. The data period 1941-1969 was analyzed for the...
Resource Type:: Masters Thesis
Full Text:: RELATIONSHIPS IN THE AGRICULTURAL LABOR MARKET i i i i Abstract approved: Timothy M. Hammonds The

Twenty-five years of grazing research at Meadow Creek in the Starkey Experimental Forest and Range

Creator:: Walburger, Kenric
Abstract:: Three studies were conducted to evaluate different grazing systems on mixed conifer rangelands in eastern Oregon, and photo points and aerial photography was used to determine effects of 25 years of cattle grazing on stream channel changes and vegetation responses. The first study was designed to determine if grazing treatment...
Resource Type:: Masters Thesis
Full Text:: ponderosa pine range in eastern Oregon. J. Range Manage. 7: 250-255 Hart, R.H., J. Bissio, M.J. Samuel

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