Many different aspects of the determination of dissolved oxygen
by controlled potential coulometry were investigated to find a means
of measuring the oxygen content of natural waters. Rapid
sampling techniques, simplicity of operation, and rugged structural
features were stressed. Cells were designed to operate by either
internal electrolysis or external...
This is the fifth report of data collected during a study designed to
determine the currents and water masses along the Oregon coast. The
first four reports cover the period from July 1958 to December 1961 (Wyatt
and Callaway, 1961; Wyatt and Kujala, 1961; Wyatt and Kujala, 1962; Wyatt
and...
This critical review of literature on dissolved oxygen requirements of freshwater fishes is one of a series of papers on water quality criteria, the formulation of which is a prerequisite to the
control of water pollution. It was prepared for FAO by the State of
Oregon (acting by and through...
The purpose of the past year's research was to begin measurement of the respiratory metabolism of zooplankton and phytoplankton in four lakes in the Lake Washington drainage. This was done, using an enzyme assay for the activity of the electron transport system. The lakes were sampled frequently and depth profiles...
The objective of this study was to quantitatively describe the intrusion of logging debris into artificial gravel streambeds during conditions of low stream flow with a stable streambed, and begin an
analysis of the effect of high flow and unstable streambeds. This study was initiated because prior studies indicated that...
Previous research has indicated that considerable amounts of finely divided slash accumulate in small mountain streams following timber harvesting. The subsequent biological decomposition of this organic matter can result i.n the reduction of dissolved oxygen (DO) concentration to levels as low as 0.6 ppm. These DO levels are lethal
to...
Experiments were designed to answer key questions about diatom-derived organic matter cycling (i.e., production and degradation) in coastal systems. Dissolved organic matter (DOM) production was examined in axenic batch cultures of five diatom species. Dissolved organic carbon (DOC) release rates varied between species, but were significantly higher for all species...