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Vitamin A status of vegetarians

Creator:: Schardt, David G.
Resource Type:: Masters Thesis
Full Text:: VEGETARIANS by David G. Schardt A THESIS submitted to Oregon State University in partial

Transformation of Western Hemlock Tree Crowns by Dwarf Mistletoe

Creator:: Calkins, Stephen J.
Abstract:: Hemlock dwarf mistletoe (Arceuthobium tsugense subsp. tsugense) is an arboreal, hemiparasitic plant that principally parasitizes western hemlock (Tsuga heterophylla). Hemlock dwarf mistletoe exerts a profound influence on infected trees that can drastically change the structure of the tree crown due to reduced growth, top dieback, branch deformation and death, resulting...
Resource Type:: Masters Thesis
Full Text:: shifts in crown structure reflect a shift in function, from prioritizing biomass production and growth

An ammonia stripping and recovery system for animal wastewaters

Creator:: Crown, Julia K.
Abstract:: Traditionally, livestock operations were small and combined with cropping operations. This allowed farms to be self-sustaining because nutrients were constantly recycled on the farm. Since the Haber-Bosch chemical process was patented, crop farmers turn to industrial fertilizers when soils nutrients are depleted. Animal and plant operations diverged, functionally separated, and...
Resource Type:: Masters Thesis
Full Text:: . Crown A THESIS submitted to Oregon State University in partial fulfillment of the requirements

Modeling crown profile of Douglas-fir in the Western Willamette Valley

Creator:: Mortzheim, Joseph T.
Abstract:: Crown profile was modeled using a system of equations with three components. The first equation predicts the maximum crown width of an open grown tree based on the tree's diameter at breast height. The second equation modifies maximum crown width to represent the largest width of the crown in stand...
Resource Type:: Masters Thesis

Growth and mycorrhiza formation of Douglas-fir seedlings grown in soils collected at different distances from hardwoods pioneering southwest-Oregon clearcuts

Creator:: Borchers, Susan L.
Abstract:: A greenhouse bioassay was used to compare the effects of soils collected at different distances from hardwood species on the growth, mycorrhiza formation, and foliar nutrient concentrations of Douglas-fir seedlings. Soil nutrient concentrations and bulk densities were also determined. Soils were collected from two southwestern Oregon sites that had been...
Resource Type:: Masters Thesis

The influence of stand structure and topography on growth, leaf area and efficiency of young Douglas-fir in the Oregon Coast Range

Creator:: Kaiser, Elisabeth H.
Abstract:: The relative influences of stand structure and topographic variation on volume growth, photosynthetic surface area, and stem growth efficiency were determined for six 17 to 23 year old well stocked stands in the central Oregon Coast Range. Plots were assigned to topographic classes (aspect, slope steepness, and slope position), by...
Resource Type:: Masters Thesis

Effects of planting density and thinning on growth, stem form, and crown recession in young red alder

Creator:: Lewis, Robert G. (Robert Gorden), 1959-
Abstract:: Stem growth, stem form development, and the dynamics of crown recession in young red alder (Alnus rubra Bong.) were studied by analyzing annual growth rings of stems and knots, annual height increments, projected crown areas, and branch diameters. Forty-one trees were sampled from three plantation spacing studies, representing ages 1...
Resource Type:: Masters Thesis

Control of Lepidium latifolium and restoration of native grasses

Creator:: Laws, Margaret S.
Abstract:: Lepidium latifolium L. (perennial pepperweed, LEPLA) is an exotic invader throughout western North America. At Malheur National Wildlife Refuge (MNWR) in southeast Oregon, it has invaded about 10% of meadow habitats that are important for wildlife. This study's objective was to determine the most effective and least environmentally harmful treatment...
Resource Type:: Masters Thesis
Full Text:: Dr. David A. Pyke of the U.S. Geological Survey's Biological Resources Division developed

In situ measurement of the benthal oxygen requirements of tidal flat deposits

Creator:: Crook, Gene Ray
Abstract:: In situ light and dark planktonic and benthal respirometers were used to measure the oxygen requirements of Yaquina estuary water and benthal deposits. Respirometer devices were constructed so that actual conditions of mixing could be simulated and benthal deposit disturbance would be minimized. A mathematical model of a benthal respirometer...
Resource Type:: Masters Thesis
Full Text:: THE BENTHAL OXYGEN REQUIREMENTS OF TIDAL FLAT DEPOSITS Abstract approved: Dr. David A. Bella In

The influence of different processing procedures on strawberry juice and wine quality

Creator:: Flores Gaytan, Jose Humberto
Resource Type:: Masters Thesis
Full Text:: approved: _ Dr. David A. Heatherbell This study was conducted to optimize the extraction of

ScholarsArchive@OSU

Vitamin A status of vegetarians

Transformation of Western Hemlock Tree Crowns by Dwarf Mistletoe

An ammonia stripping and recovery system for animal wastewaters

Modeling crown profile of Douglas-fir in the Western Willamette Valley

Growth and mycorrhiza formation of Douglas-fir seedlings grown in soils collected at different distances from hardwoods pioneering southwest-Oregon clearcuts

The influence of stand structure and topography on growth, leaf area and efficiency of young Douglas-fir in the Oregon Coast Range

Effects of planting density and thinning on growth, stem form, and crown recession in young red alder

Control of Lepidium latifolium and restoration of native grasses

In situ measurement of the benthal oxygen requirements of tidal flat deposits

The influence of different processing procedures on strawberry juice and wine quality

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