Unfished populations of cutthroat trout in three small coastal
streams in Oregon were studied from April of 1962 until November
of 1963. Population size, growth rate, and net production were
estimated for study areas in each stream. The nature of seasonal
movement patterns within the study areas and at fish...
A source test was conducted to determine the particulate and the
total gaseous hydrocarbon emissions from a gas heated veneer dryer.
Samples were taken on eight separate days from the exhaust stacks
while the dryer was processing Douglas fir veneer. Of the eight days,
three was used to determine the...
The increased use of outdoor recreation as a part of the
American way of life has focused attention on the diminishing ratio
of suitable land available to meet the recreational demands. In
Oregon, where the demand is greatest, there is still ample undeveloped
land for recreation use. There exists, therefore...
As the management of range lands is intensified or as improvement
activity is increased, a critical need is seen to refine the
understanding of the ecology of these lands. If soil surveys on range
lands are to be meaningful and useful, the relationship between the
fundamental ecological units and the...
During the maturation of the ovaries of Leucophaea maderae (Fab.),
the terminal oocytes increase in length from 1.00 mm to greater
than 5.00 mm. This increase in length is accompanied by approximately
a 70-fold increase in protein content. The relationship between
the ovarial size and total protein indicated that the...
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....