The main objective of this investigation was to evaluate relationships
between the production and utilization of forage and deer
browsing of hand-planted Douglas-fir seedlings. A secondary purpose
was to study some effects of selected physical and biological
site factors on the survival and growth of fir seedlings.
Field work was...
A study was initiated in 1961 to characterize seral plant
communities in a part of the Cedar Creek drainage in the Tillamook
Burn. Stratification of vegetation into ecological units was a necessary
first step in conifer-animal damage studies supported by the
Oregon State Game Commission.
Reconnaissance information was recorded in...
Thermal decomposition of several di-p-toluenesulfonylhydrazones
was studied. It was found that the carbene decomposition
of tetramethyl-1,3-cyclobutanedione, di-p-toluenesulfonylhydrazone
gave two products resulting from
rearrangement. One was identified as 2,5-dimethyl-1,3,4-hexatriene. A tentative structure for the second was
proposed. During the course of the study, a more convenient
procedure for thermal decompositions was...
Published May 1964. 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
Research was conducted in a mixed-coniferous forest stand
that was clearcut, burned, and seeded in order to study early plant
succession, grazing influences on native and introduced species, big
game use, and environmental relationships vegetation, animal,
and environmental research was carried out from 1965 to 1967 in
three, five-acre exclosures...
In this study of toxigenic and non-toxigenic strains of Clostridium
botulinum type E, attempts were made to induce toxin production
in non-toxigenic cultures by exposure to mutagenic agents
and to differentiate the organisms by immunodiffusion. First, cultures
of non-toxic Cl. botulinum type E were exposed to various
mutagenic agents in...
A Cr₂0₃, and cellulose fibre mixture was used with cattle, in
three grazing and two semi-restricted experiments, to study the mode
of its excretion, the possibility of using it in a once-daily dosing and
grab-sample regime to estimate fecal output and in a field experiment
to test a hypothesis involving...
Use of federal lands for commercial and recreational activities
contributes significantly to the economic stability of many rural
areas. Recent increases in demand for recreational use have created
conflicts between uses and among users. Some are questioning the
use of public land for private gain. The seemingly low grazing fees...
The entire human population is chronically exposed to various
contaminants, including lead and chlorinated hydrocarbon pesticides.
Studies were undertaken to assess the effects of chronic exposure to
lead on the toxicities of two such pesticides, lindane and dieldrin.
Mice were given lead as the acetate in drinking water, at levels...
Comparisons were made of the abilities of Streptococcus lactis,
Streptococcus cremoris and Streptococcus diacetilactis bacteriophages
to endure various laboratory isolation and storage treatments.
Neutralization of Cottage cheese whey containing phages offered no
survival advantage over unneutralized samples, refrigeration of
neutral and acid whey samples increased the survival of only the...
A mooring system was designed and constructed to make possible
the installation and the recovery of racks of sample panels for
a study of deep-ocean wood-boring molluscs. Racks containing
pine, fir, oak, and cedar boards were exposed to borer attack at
six stations with depths of 50, 100, 150, 200,...