1. Globally, river systems have been extensively modified through alterations in riverscapes and flow regimes, reducing their capacity to absorb geophysical and environmental changes.
2. In western North America and elsewhere, alterations in natural flow regimes and swimways through dams, levees, and floodplain development, work in concert with fire regime,...
[v. 1. Text] -- [v. 2]. Summary of state agency measures -- [v. 3]. Land use designation and regulation -- [v. 4]. Watershed councils -- [v. 5]. Watershed projects -- [v. 6]. Science team information and products -- [v. 7]. Information related to habitat restoration projects -- [v. 8]. Responses...
Under July 1, 1972 - June 30, 1973 cost levels for the Little White Salmon and Willard National Fish Hatcheries, small budget reductions made by reducing expenditures for fish food resulted in sharp increases in average total cost per pound of salmon produced.
In July and August 1961, nine lots of 500 juvenile silver salmon each were subjected to one-, two-, three- and four-week periods of complete starvation. The three- and four-week periods produced the best growth checks for that time of year, but were generally of inferior quality to those produced in...
We evaluated the effectiveness of using hatchery coho salmon Oncorhynchus kisutch presmolts to rebuild wild populations in Oregon coastal streams. Juvenile and adult populations were monitored in 15 stocked and 15 unstacked streams from summer 1980 until summer 1985. During the summers following the planting of presmolts, the number of...
Kokanee Ecology F-71-R-1 This document is a report on the preliminary investigation into the Kokanee salmon in Odell Lake. As such, it includes catch results of Kokanee from various fishing vessels and days, as well as for fry from trawling. Data includes sizes of fish at various depths and times....
This report measures the effects of logging on the production and yield of Coho salmon, coastal cutthroat, and steelhead trout in small coastal streams. It contains descriptions of the physical and biological environment before logging, and describes some immediate effects of logging, such as such as a decrease in dissolved...
This document describes the life history and abundance of both the spring Chinook salmon and the Silver salmon in the Willamette River. It also goes into detail about various factors affecting Willamette salmon runs., including pollution, dams, and logging.
A student report for a Civil Engineering 572 class, this document is an extensive description of the Salmon River estuary, including water flow, quality, predictions for the estuary’s future, and numerous charts and graphs.
This information report contains the results of a program to distribute surplus fry to streams underutilized by the natural population. It discusses the stocking and evaluation procedures, and gives the results.
This study was performed in response to doubts about the reliability of the database in place at ODFW. It consisted of surveys to verify if Chinook salmon were using the habitats previously identified and looks for discrepancies between summer habitat inventory and fall Chinook spawners. A large portion of the...
The aims of this study were first, to test the hypothesis that metrics of fish growth and condition relate positively to parasite species richness (S[subscript R]) in a salmonid host; second, to identify whether S[subscript R] differs as a function of host origin; third, to identify whether acquisition of parasites...
Gives standard spawning data for salmon in Oregon and adds information "to document straying of private hatchery coho salmon from Oregon Aqua-Foods'(OAF) facility at Yaquina Bay. . . The program was conducted in response to concerns by fisheries managers and the public on the possible long-term effects of interbreeding wild...
Published Fall 1998. 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
Published 1972. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the Sea Grant Catalog: http://seagrant.oregonstate.edu/publications
Published January 1995. 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
Multiple analytical techniques were used to evaluate the impact of multiple parasite species on
the mortality of threatened juvenile coho salmon (Oncorhynchus kisutch) from the West Fork Smith
River, Oregon, USA. We also proposed a novel parsimonious mathematical representation of
macroparasite distribution, congestion rate, which i) is easier to use...
"Final report to the U.S. Environmental Protection Agency. Funds supporting this study have been provided by Region 10 of the U.S. Environmental Protection Agency, Seattle, WA."
"Primary objectives . . . were to document the wild salmonid species that utilize Salmon River as a spawning area, to determine their spatial and temporal distributions, and to measure the abundance of each species." (p.1) Adults and juveniles were studied.