The ecology of a population of snowshoe hares, Lepus
americanus washingtonii, was studied in western Oregon from 1960
to 1962. Objectives were to obtain information to control hares,
which frequently cause damage to coniferous reproduction in the
region, and to compare the life history of this little-studied subspecies
with others....
A study was undertaken to determine the reliability of the formation
of a line of demarcation between paired cultures of Fomes
cajanderi Karst. as an indicator of dissimilar compatibility genotypes.
The results were applied to an assay of the number and location of
compatibility genotypes in each of four glaze-damaged,...
The ecological and silvicultural importance of snowbrush,
Ceanothus velutinus, in the areas west of the summit of the Oregon
Cascades was studied. Particular attention has been given its nitrogen-
fixing ability under both field and greenhouse conditions.
On west slopes of the Oregon Cascades snowbrush occurs above
2, 500 feet...
The study was conducted on the Ochoco National Forest in
central Oregon. Vegetation-soil relationships were evaluated for the
following objectives: 1. Develop a sound ecological foundation on
which total land management decisions may be based. 2. Evaluate
forest succession, stocking, and growth to improve management.
3. Develop accurate range condition...
The nonagricultural lands of the world are being called upon today to satisfy tremendous
demands from society at all levels of economic development. Until recently, costs of management
of many of these lands were too high to warrant appreciable management investment for
the relatively low yields. Society is beginning to...
The mycorrhizal rootlets of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco.) and red alder (Alnus rubra Bong.) were extensively investigated. A jet-black mycorrhiza was found to be dominant on Douglas-fir rootlets. The fungal symbiont was identified as Cenococcum graniforme (Sow.) Ferd. and Winge. Two forms of mycorrhizae predominated on root systems of...
Seed of Cougar and Newport Kentucky bluegrass (Poa pratensis L.)
was harvested at Pullman and Spokane at several stages of maturity.
Variations in seed attributes resulting from environmental and maturity
effects were evaluated through germination tests, tetrazolium staining,
seed moisture and seed weight determinations. Seedling vigor was
determined by .speed...
The balsam woolly aphid (Adelges piceae Ratz.) feeds by inserting its stylets intra- and intercellularly into the cortex or outer phloem of the true firs. While feeding, the aphid injects into the bark an unknown stimulatory substance which affects the adjacent cortical parenchyma cells, the activity of the vascular cambium...
The main goals of this study were: (1) to develop a combination
of soiling, laundering, and soil detection procedures which would be
accurate, reproducible, and relatively rapid; (2) to develop a quantitative
method to detect artificial soil on fabrics by X-ray fluorescent
spectroscopy; (3) to compare unfinished and Wurlan finished...
Second Edition May 1969. Reprinted January 1979. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Major objectives of the study involved development of a laboratory
procedure to obtain mating, determining characteristics of female
sex attraction, and determination of the effects of temperature and
humidity on mating and fecundity. The second of two methods devised
to obtain mating, "the vertical airflow technique," was convenient to
employ...
A sequence of soils derived from tuffaceous rocks was sampled
on the H. J. Andrews Experimental Forest and adjacent U. S. Plywood
land to determine some genetic and stability relationships. The
less than two micron size fraction from each sample was characterized
by x-ray diffraction with respect to crystalline clay...
Objectives of this study were to determine differences in
herbage production of three seral stages of three habitat-types.
Field studies were conducted in 1967 and 1968 on the Squaw Butte
Experimental Range.
Twelve, 400-square-foot, paired exclosures were established
in each habitat-type. Herbage was clipped from four, 48-squarefoot
samples in one...
The effects of roadbuilding, logging and burning upon stream
runoff responses to individual storms are evaluated for the Alsea
experimental watersheds, located in the Oregon Coast Range, The
parameters analyzed are peak discharge, induced peak discharge,
time-to-peak, and storm-runoff volume. The volume parameter is
further sub-divided into total, quick, delayed,...
The avifaunal composition of ten western Oregon forest stands located at the eastern base of the Coast Range was examined on a seasonal basis. The stands were dominated by Oregon white oak, Douglas fir or western hemlock, Avian populations were sampled monthly from January 1968 to January 1970, using permanent...
The project of which this research was a part is designed to
provide an improved system of ecological resource analysis. Specific
objectives of this study were: (1) classification of plant communities
on the fringes of the sagebrush steppes and the salt desert of
southeastern Oregon, (2) development of symbolic and...
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...
A study was conducted to determine the quantity and character
of substances leached from logs floating in water, and the rate of
leaching of these substances. The species of wood studied were Douglas
fir and ponderosa pine. The research was carried out in a controlled
laboratory environment with log sections...
Selling timber by the tree or by the thousand board feet is a
business proposition. Both the seller and the buyer must know the
quality and the quantity of the products being sold.
The major purpose of this study was to develop a guide to teach
family clothing at the twelfth grade level stressing decision-making in
family concerns.
An interview-questionnaire was administered to Canby Union
High School senior girls to discover information about their families,
to find what they believed was important to...
The major purpose of this study was to develop a resource
unit in family life education for boys. To plan this unit, which was
divided into two parts, personal and family relations and child development,
the writer
1. Surveyed the homemaking teachers in Oregon to discover
who taught boys homemaking...
The pages of this Continuing Education Book contain the papers presented on the Oregon State University campus, March 22-24, 1971 at which time several hundred individuals gathered to learn the requirements for the Oregon Public Employee "Special Applicator" license test. The purpose of this Short Course on Pesticides, Pest Control...
Published May 1971. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published September 1971. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This study was conducted in the old-growth forests of Clatsop,
Tillamook, and Lincoln counties, Oregon. The three objectives of
the research were to describe and classify the near-climax plant
communities found within the forests, to relate the associes described
by a previous study to the forest communities characterized by the...
Production and marketing are two important activities of the
U.S. beef industry. Spatial differences in these activities result
due to the existing cost differences in production and marketing of
beef. The overall objective of this study is to determine simultaneously
interregional and interseasonal equilibrium, with respect
to beef production and...
The causes of turbidity in impounded and released reservoir
water are studied. Seven Willamette Basin reservoirs are compared
to isolate watershed and reservoir characteristics which produce variations
in turbidity. Of the seven, Hills Creek Reservoir is examined
in detail. Particular features of the basin and impoundment are
studied to isolate...
Dicamptodon is the single, extant genus of the
ambystomatid subfamily Dicamptodontinae. Two species, D.
ensatus (Eschscholtz) and D. copei Nussbaum are recognized.
D. ensatus is found in the forested, mountain regions of
northwestern California and western Oregon, in the Willapa
Hills and Cascade Mountains of Washington, in extreme
southwestern British...
The purpose of the research was to computerize mathematical
procedures for the analysis of range vegetation and environmental
data. The specific objectives were as follows:
1. to develop and apply computer techniques to the classification
of vegetation in order to provide a phytosociological
framework within which to investigate the ecology...
Stem mapping of all trees greater than 15 cm dbh has
been completed on the 10.24 hectare watershed (No. 10) at H. J.
Andrews intensive study site. Using a 25 m grid system, mapping
of vegetation into 7 plant communities and then into 4 habitat
types has also been completed....
Early in the planning of the Coniferous Biome program It was recognized that experimental watersheds 2 and 3 in the H. J. Andrews Experimental Forest might provide ideal study sites for certain phases of the Biome
program. A study was funded during year 1 (1970) to provide necessary background ecological...
The forest-products industries are most important to the state of Oregon. Oregon leads the nation in the production of plywood, lumber, and particle board. More than half of softwood plywood production in the United States came from Oregon at the time of this survey, and more than a fifth of...
This bibliography, an apparently haphazard sampling of literature from many sources, grew out of a general project that was intended to elucidate the role of consumers in the forest system. The 124 articles
briefly abstracted here are ones that give some insight into the role of foliage-feeding insects. The process...
The need for classifying vegetation in a more precise way is
evident. Also, there is a need to provide a hierarchical classification
scheme that will match changes in image characteristics as one
moves through the scales from space to conventional aerial photography.
Such refined classifications of vegetation are the first...
Numerous isolates of Armillaria mellea were obtained within
a 250 by 450 foot Study Area in a ponderosa pine plantation in central
Oregon. These isolates were recovered from roots of armillaria-killed
young-growth pine, from large stumps of the former pine
overstory, including roots away from the stump proper, and from...
This study was undertaken to increase knowledge of opal phytoliths
in plants and soils of Oregon, and thus encourage further use of
phytoliths in future pedologic investigations.
Content of plant opal in needles from ten common Oregon conifer
species ranged from 0.2 to 7.9%. Western larch (Larix occidentalis)
contained the...
A study of the McKenzie River floodplains, terraces and glacial
outwash plains was undertaken to classify and describe the vegetation
and soils of a previously little studied synecological unit.
During the summer of 1971, 54 analytic vegetation and soil
plots (stands) were studied. Cover and frequency of all trees, shrubs,...
These are the proceedings of the third short course in the management of young Douglas-fir and western hemlock conducted by the School of Forestry, Oregon State University, June 15-18, 1970.
The course included one day of lectures and discussion on the campus of Oregon State University, two all-day field trips...
Individuals in the soft white wheat industry in the Pacific Northwest are looking for new marketing tools which will be helpful for their operations and reduce some of their risk. During the past 18-24 months their interest has centered on the commodity futures market, where they would like to see...
Published October 1972. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
"This report presents a reference list of available studies on aboveground forest biomass, together with (1) methods of sampling and estimation and some of the problems and errors associated with each method (given as an aid to comparison of data), (2) some results obtained from the literature of field estimates...
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The current trend toward the establishment and care of forests for a
wide combination of uses requires flexibility in forest culture and a
knowledge of the silvicultural choices available to the resource manager. This
publication summarizes for each of 37 major forest types in the United States
the silvicultural systems...
The energy budget of a pumice desert surface was analyzed under clear skies during early, mid-and late summer periods. The pumice site is in the semi-arid plateau region of Central Oregon at an elevation of about 1500 meters. The flat pumice surface is approximately 250 hectares in extent, and is...
Published February 1973. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
In 1970, the Pacific Northwest (PNW) produced approximately 145,332,000 bushels of wheat (all types) with an average harvest value of over $220,000,000. White wheat comprised about 126,234,000 bushels of that total, about 87 percent. In recent years the financial circumstances, for several reasons, have deteriorated for many farmers and grain...
Western dwarf mistletoe (Arceuthobium campylopodum Engelm.
1. campylopodum) is a parasite of ponderosa pine (Pinus ponderosa
Laws. ). The objectives of this investigation are: (a) to formulate a
mathematical description of the process of dwarf mistletoe disease
spread in a pine forest, (b) to use this description to predict the...
Respiratory rates were measured, in situ, for the litter, the
soil, and the litter-soil subsystems of a Pseudotsuga menziesii forest
as a function of type of understory vegetation. The major objectives
were to demonstrate the utility of the litter layer as a distinct subsystem
of this forest ecosystem, to demonstrate...
Sediment transport in a gravel-bottomed stream located in the Oregon Coast Range was studied to determine the effects of a single
layer of large particles (the armour layer) located at the surface of the bed material. The bed load transport system was studied jointly with suspended sediment transport to understand...
The period between 1971 and 1992 will mark the transformation
of the region' s hydro based electrical system into one
dependent on a mix of hydro and thermal generation. Through a
review and compilation of current literature it has been determined
that the program ushering in thermal generation is really...