During 1963 and 1964 collections were made in tributaries of
the lower Columbia River and literature was reviewed to compile a
list of fishes from that area.
Based on available sources and collections in this study, a
total of 28 families and 77 species are known from the lower Columbia...
Salmonid run sizes are strongly affected by their early marine stage. Fully understanding the life history of salmonids means understanding how they interact with their marine environment and with other fishes. Changes in the biological and physical environment off the Columbia River region affects the distribution and abundance of predatory...
It is important to avoid misallocation of resources for either
private or public production. Misallocation in public programs
can result from failure to employ resources in h:igh priority uses
or to eliminate programs that have become obsolete. This study
evaluates the benefits and costs of the continuing public program
aimed...
Although fish are a nutritious food source, they also are the main source of methylmercury exposure in U.S. populations. This research examined the risks from methylmercury and benefits from omega-3 fatty acids and selenium from fish consumption. The first study provided the first region-specific quantitative risk/benefit analysis for nine commonly...
In this study methods were developed for the prediction of wave
conditions that are hazardous to navigation at river entrances, with
emphasis on applicability to the Columbia River. There are two basic
components to the prediction system: (1) a semi-automated spectral
method for forecasting the significant height and average period...
Hydrographic and bathythermograph data taken off the Oregon
coast during a two week period in August of 1969 were analyzed to
determine if heat content and mixed layer depth may be used as
indicators of Columbia River plume water.
Heat content was found to be a poor indicator of plume...
An intensive chemical investigation, that includes the
determinations of salinity, oxygen, nutrients, pH, alkalinity, and
total carbon dioxide of the Columbia River plume off the Oregon
coast in July 1967 shows the following unique features:
1. Along the axis of the river plume both the salinity minimum and
temperature maximum...
Despite evidence that juvenile Chinook salmon (Oncorhynchus tshawytscha) utilize North Pacific estuaries for growth and salinity acclimation, research in the Columbia River estuary has lead to opposing hypotheses about the estuary’s importance as a salmon rearing environment. Many contemporary tagging studies indicate that salmon residency within the estuary is short...