A method is described for determining the absolute dynamic topography of the sea surface. Using hydrographic and wind data obtained in 1963, the surface topography and the horizontal and vertical mass transports off the southeast Arabian coast during the summer monsoon are calculated. As indicated by the calculations, upwelling occurs...
Solar radiation intensities, incident to the sea surface off the Oregon
coast, are measured and compared. Simplification of some physical
and biological problems can be anticipated if the average radiation
received over a broad segment of ocean can be accurately indicated
by the amount recorded at the land station.
The...
A study was undertaken in Yaquina Bay, Oregon during the
summer of 1964 to determine the distribution and the factors affecting
the distribution of the polychaete worm, Nephtys caecoides,
Hartman, 1938, in the estuary.
This organism has a continuous distribution from offshore to
a point approximately eight kilometers into the...
The geopotential anomalies and the average meridional geostrophic
flow off Newport, Oregon, were computed from the data taken
during twenty-one hydrographic cruises.
The annual average of geopotential anomaly was 1.31 dynamic
meters with a seasonal variation of the order of 14 dynamic centimeters.
Highest values of geopotential anomaly occurred in...
Herbicides were tested for the selective control of bentgrass in
Kentucky bluegrass turf under three levels of competition. Best control
in zero competition was obtained with a winter treatment of
bromacil at two pounds per acre. Under circumferential and direct
competition, best control was obtained with a summer and fall...
The external and internal morphology are considered and important morphological characters are found which relate Macrovelis to the family Mesoveliidae. Both macropterous and Brachypterous forms occur throughout the western half of the United States. The adults and nymphs are restricted to the margins of springs and streams during the reproductive...
Studies were conducted within a 12-mile radius of Camp Sherman, Oregon, in the Deschutes National Forest during the spring and summer of 1965 and the spring of 1966, with one follow-up visit in the summer of 1967. The feeding and foraging activities of Eutamias amoenus and Citellus lateralis were observed,...
The life history of juvenile sockeye salmon (Oncorhynchus nerka) resident in Chignik River, Alaska, represents a departure from the lacustrine, pelagic existence typical of juveniles of this species. For this reason, the distribution, relative abundance in different parts of the river, growth, and upstream and downstream movements of juvenile sockeye...
Metabolic rate-temperature responses of three related
species of sea urchins were determined using oxygen consumption
rate measurements. The three species used were Strongylocentrotus
purpuratus, Strongylocentrotus franciscanus, and Allocentrotus
fragilis. All measurements were made using an oxygen
macro-electrode, physiological gas analyzer, and sealed respiratory
container. Two series of experiments--field-acclimatized and
temperature-acclimated--were...
An investigation of the effects of temperature and of zinc on
development of tobacco mosaic virus (TMV) in resistant and susceptible
varieties of tomatoes was conducted under greenhouse conditions.
The study included two experiments, one run during late winter and
early spring, and the other during late spring and summer,...