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Early Ocean Dispersal Patterns of Columbia River Chinook and Coho Salmon

Creator:: Fisher, J. P., Weitkamp, L. A., Teel, D. J., Hinton, S. A., Orsi, J. A., Farley, E. V., Jr., Morris, J. F. T., Thiess, M. E., Sweeting, R. M., and Trudel, M.
Abstract:: Several evolutionarily significant units (ESUs) of Columbia River basin Chinook Salmon Oncorhynchus tshawytscha and Coho Salmon O. kisutch are listed as threatened or endangered under the U.S. Endangered Species Act. Yet little is known about the spatial and temporal distributions of these ESUs immediately following ocean entry, when year-class success...
Resource Type:: Article
Full Text:: Research Laboratory, Post Office Box 130, Manchester, Washington 98353, USA S. A. Hinton National Oceanic

Riverscape Patterns among Years of Juvenile Coho Salmon in Midcoastal Oregon: Implications for Conservation

Creator:: Flitcroft, R., Burnett, K., Snyder, J., Reeves, G., and Ganio, L.
Abstract:: Patterns of salmon distribution throughout a riverscape may be expected to change over time in response to environmental conditions and population sizes. Changing patterns of use, including identification of consistently occupied locations, are informative for conservation and recovery planning. We explored interannual patterns of distribution by juvenile Coho Salmon Oncorhynchus...
Resource Type:: Article
Full Text:: Research Lab, 3200 Jefferson Way Southwest, Corvallis, Oregon 97331-8550, USA J. Snyder Department of

Ontogenetic shifts in diets of juvenile and subadult coho and chinook salmon in coastal marine waters: important for marine survival?

Creator:: Daly, Elizabeth A., Brodeur, Richard D., and Weitkamp, Laurie A.
Abstract:: Successfully shifting to a more piscivorous diet may be an important factor in the growth and survival of juvenile coho salmon Oncorhynchus kisutch and Chinook salmon O. tshawytscha during their first summer in the northern California Current. Nonmetric multidimensional scaling and cluster analysis of diets by size showed several distinct...
Resource Type:: Article
Full Text:: ://www.tandfonline.com/page/terms-and- conditions This article may be used for research, teaching and private study

Body Size and Growth Rate Influence Emigration Timing of Oncorhynchus mykiss

Creator:: Tattam, Ian A., Ruzycki, James R., Li, Hiram W., and Giannico, Guillermo R.
Abstract:: Juvenile Oncorhynchus mykiss migrate extensively in freshwater during fall. We used individual tagging to study the spatial origin, influences, and outcomes of fall migration on fish that emigrated from summer rearing tributaries during fall (early-emigrants) and those that did not (late-emigrants) in the South Fork John Day River, Oregon. Fall...
Resource Type:: Article
Full Text:: Oncorhynchus mykiss 1 2 Ian A. Tattam *1 3 Oregon Cooperative Fishery Research Unit, Department of

Marine distributions of chinook salmon from the West Coast of North America determined by coded wire tag recoveries

Creator:: Weitkamp, Laurie A.
Abstract:: The coded wire tag (CWT) database contains detailed information on millions of Pacific salmon Oncorhynchus spp. released from hatcheries or smolt traps and recovered in the north Pacific Ocean and its tributaries. I used this data set to examine the spatial and temporal variation in the marine distributions of 77...
Resource Type:: Article
Full Text:: - conditions This article may be used for research, teaching and private study purposes. Any substantial or

Reconstructing juvenile chinook salmon life history in the Salmon River Estuary, Oregon, using otolith microchemistry and microstructure

Creator:: Volk, Eric C., Bottom, Daniel L., Jones, Kim K., and Simenstad, Charles A.
Abstract:: We quantified the juvenile rearing and migratory patterns of individuals from a population of fall-spawning Chinook salmon Oncorhynchus tshawytscha in Oregon's Salmon River estuary using otolith microchemistry and microstructure. The study confirmed the daily periodicity of otolith growth increments in a natural fish population under field conditions and validated fundamental...
Resource Type:: Article
Full Text:: research, teaching and private study purposes. Any substantial or systematic reproduction, re-distribution

Quantifying Salmon-Derived Nutrient Loads from the Mortality of Hatchery-Origin Juvenile Chinook Salmon in the Snake River Basin

Creator:: Warren, Dana R. and McClure, Michelle M.
Abstract:: Hatchery supplementation of anadromous salmon is extensive across the Pacific Northwest region with millions of juvenile salmon stocked annually. The influence of hatchery-origin fish as prey items in recipient ecosystems has been explored, but influences of these fish on broader stream nutrient dynamics has not been well-studied. Salmon-derived nutrients (SDN)...
Resource Type:: Article
Full Text:: . Endangered Species Act). These two ESUs—the Snake River Spring–Summer (SRSS) Chinook salmon ESU (a stream

Susceptibility of Juvenile Steelhead to Avian Predation: the Influence of Individual Fish Characteristics and River Conditions

Creator:: Hostetter, Nathan J., Evans, Allen F., Roby, Daniel D., and Collis, Ken
Abstract:: Identification of the factors that influence susceptibility to predation can aid in developing management strategies to recover fish populations of conservation concern. Predator-prey relationships can be influenced by numerous factors, including prey condition, prey size, and environmental conditions. We investigated these factors by using juvenile steelhead Oncorhynchus mykiss from the...
Resource Type:: Article
Full Text:: Allen F. Evans Real Time Research, Inc., 52 Southwest Roosevelt Avenue, Bend, Oregon 97702, USA Daniel

Effects of Hypoxia on Consumption, Growth, and RNA:DNA Ratios of Young Yellow Perch

Creator:: Roberts, James J., Brandt, Stephen B., Fanslow, David, Ludsin, Stuart A., Pothoven, Steven A., Scavia, Donald, and Höök, Tomas O.
Abstract:: As in various freshwater and coastal marine ecosystems worldwide, seasonal bottom water hypoxia is a recurring phenomenon in Lake Erie's central basin. While bottom hypoxia can strongly affect sessile benthic animals, its effects on mobile organisms such as fish are less understood. We evaluated the potential for bottom hypoxia to...
Resource Type:: Article
Full Text:: ; Cooperative Institute for Limnology and Ecosystems Research, University of Michigan, Ann Arbor, Michigan, USA

Growth, survival, and habitat use of naturally reared and hatchery steelhead fry in streams: effects of an enriched hatchery rearing environment

Creator:: Tatara, Christopher P., Riley, Stephen C., and Scheurer, Julie A.
Abstract:: After hatchery-reared salmonids are released into the wild, their survival and performance are frequently lower than those of wild conspecifics. Additionally, negative effects of hatchery fish on wild fish are cited as factors affecting the recovery of salmonid populations. Alternative hatchery rearing environments and release practices have been proposed to...
Resource Type:: Article
Full Text:: , Manchester Research Station, Post Office Box 130, Manchester, Washington, 98353, USA b U.S. Geological Survey

ScholarsArchive@OSU

Early Ocean Dispersal Patterns of Columbia River Chinook and Coho Salmon

Riverscape Patterns among Years of Juvenile Coho Salmon in Midcoastal Oregon: Implications for Conservation

Ontogenetic shifts in diets of juvenile and subadult coho and chinook salmon in coastal marine waters: important for marine survival?

Body Size and Growth Rate Influence Emigration Timing of Oncorhynchus mykiss

Marine distributions of chinook salmon from the West Coast of North America determined by coded wire tag recoveries

Reconstructing juvenile chinook salmon life history in the Salmon River Estuary, Oregon, using otolith microchemistry and microstructure

Quantifying Salmon-Derived Nutrient Loads from the Mortality of Hatchery-Origin Juvenile Chinook Salmon in the Snake River Basin

Susceptibility of Juvenile Steelhead to Avian Predation: the Influence of Individual Fish Characteristics and River Conditions

Effects of Hypoxia on Consumption, Growth, and RNA:DNA Ratios of Young Yellow Perch

Growth, survival, and habitat use of naturally reared and hatchery steelhead fry in streams: effects of an enriched hatchery rearing environment

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