Rogue River Spring Chinook Smolt Study
Title | Rogue River Spring Chinook Smolt Study PDF eBook |
Author | United States. Army. Corps of Engineers. Portland District |
Publisher | |
Pages | 6 |
Release | 1977 |
Genre | Chinook salmon |
ISBN |
Rogue River Spring Chinook Smolt Study
Title | Rogue River Spring Chinook Smolt Study PDF eBook |
Author | R. D. Ewing |
Publisher | |
Pages | 7 |
Release | 1977 |
Genre | Chinook salmon |
ISBN |
Juvenile Life Histories of Rogue River Spring Chinook Salmon Oncorhynchus Tshawytscha (Walbaum), as Determined by Scale Analysis
Title | Juvenile Life Histories of Rogue River Spring Chinook Salmon Oncorhynchus Tshawytscha (Walbaum), as Determined by Scale Analysis PDF eBook |
Author | Mark D. Schluchter |
Publisher | |
Pages | 0 |
Release | 1977 |
Genre | Chinook salmon |
ISBN |
Study of Wild Spring Chinook Salmon in the John Day River System, 1985 Final Report
Title | Study of Wild Spring Chinook Salmon in the John Day River System, 1985 Final Report PDF eBook |
Author | |
Publisher | |
Pages | 131 |
Release | 1986 |
Genre | |
ISBN |
A study of wild spring chinook salmon was conducted in the John Day River, Oregon: (1) recommend harvest regulations to achieve escapement goals in the John Day River; (2) recommend adtustments in timing of fish passage operations at Columbia River dams that will increase survival of John Day migrants; (3) recommend habitat or environmental improvements that will increase production of spring chinook salmon; (4) determine escapement goals for wild spring chinook salmon in the John Day River; and (5) recommend procedures for hatchery supplementation in the John Day River in the event it becomes necessary to artificially maintain the run of spring chinook salmon. Juveniles were captured as smolts during migration and as fingerlings during summer rearing. Juveniles were coded-wire tagged, and recoveries of tagged adults were used to assess contribution to ocean and Columbia River fisheries, timing of adult migrations through the Columbia River in relation to fishing seasons, and age and size of fish in fisheries. Scoop traps and seines were used to determine timing of smolt migrations through the John Day River. In addition, recoveries of tagged smolts at John Day Dam, The Dalles Dam, and Jones Beach were used to determine migration timing through the Columbia River. We examined freshwater life history of spring chinook salmon in the John Day River and related it to environmental factors. We looked at adult holding areas, spawning, incubation and emergence, fingerling rearing distribution, size and growth of juveniles and scales. Escapement goals fo the John Day River as well as reasons for declines in John Day stocks were determiend by using stock-recruitment analyses. Recommendations for hatchery supplementation in the John Day were based on results from other study objectives.
Increase in Growth of Juvenile Spring Chinook Salmon (Oncorhynchus Tshawytscha) Rearing Immediately Below Lost Creek Dam on the Rogue River
Title | Increase in Growth of Juvenile Spring Chinook Salmon (Oncorhynchus Tshawytscha) Rearing Immediately Below Lost Creek Dam on the Rogue River PDF eBook |
Author | Steven E. Jacobs |
Publisher | |
Pages | 14 |
Release | 1984 |
Genre | Chinook salmon |
ISBN |
Elk Creek Lake, Rogue River Basin
Title | Elk Creek Lake, Rogue River Basin PDF eBook |
Author | |
Publisher | |
Pages | 266 |
Release | 1972 |
Genre | |
ISBN |
Cole Rivers Hatchery Evaluation
Title | Cole Rivers Hatchery Evaluation PDF eBook |
Author | |
Publisher | |
Pages | 28 |
Release | 1990 |
Genre | Fish culture |
ISBN |