Index Catalog // ScholarsArchive@OSU

Translocating Adult Pacific Lamprey within the Columbia River Basin: State of the Science

Creator:: Ward, David L., Clemens, Benjamin J., Clugston, David, Jackson, Aaron D., Moser, Mary L., Peery, Chris, and Statler, David P.
Abstract:: The Pacific lamprey (Entosphenus tridentatus) is in decline in the Columbia River Basin, and translocating adult lamprey to bypass difficult migration corridors has been implemented since 2000. We describe and report results from two current translocation programs, provide context for use of translocation, and discuss potential benefits, risks, and uncertainties....
Resource Type:: Article
Full Text:: stocks. David L. Ward HDR Engineering, Inc., Portland, OR 97204. E-mail: david.ward@hdrinc.com

Disentangling bottom-up and top-down effects on survival during early ocean residence in a population of Chinook salmon (Oncorhynchus tshawytscha)

Creator:: Miller, Jessica A., Teel, David J., Baptista, Antonio, and Morgan, Cheryl A.
Abstract:: We evaluated the relative importance of "bottom-up" (production-limited) and "top-down" (predator-mediated) processes during early marine residence in a population of Chinook salmon (Oncorhynchus tshawytscha) from the upper Columbia River, USA. We examined length, mass, and condition index of age-0 juveniles collected in the ocean during June and September across 11...
Resource Type:: Article
Full Text:: salmon (Oncorhynchus tshawytscha) Jessica A. Miller, David J. Teel, Antonio Baptista, and Cheryl A

A Dimensionless Invariant for Relative Size at Sex Change in Animals: Explanation and Implications

Creator:: Gardner, Andy, Allsop, David J., Charnov, Eric L., and West, Stuart A.
Abstract:: Recent comparative studies across sex-changing animals have found that the relative size and age at sex change are strikingly invariant. In particular, 91%–97% of the variation in size at sex change across species can be explained by the simple rule that individuals change sex when they reach 72% of their...
Resource Type:: Article
Full Text:: ,1,2,* David J. Allsop,1,3,† Eric L. Charnov,4,‡ and Stuart A. West1,§ 1. Institute of Evolutionary

When is bigger better? Early marine residence of middle and upper Columbia River spring Chinook salmon

Creator:: Tomaro, Londi M., Teel, David J., Peterson, William T., and Miller, Jessica A.
Abstract:: Early ocean residence is considered a critical period for juvenile salmon although specific survival mechanisms are often unidentified and may vary by species or life stage. Columbia River spring-run Chinook salmon Oncorhynchus tshawytscha abundance has declined dramatically since the early 1900s. To elucidate mechanisms of early marine survival, we tested...
Resource Type:: Article
Full Text:: salmon Londi M. Tomaro1*, David J. Teel2, William T. Peterson3, Jessica A. Miller1 1Coastal Oregon

Statistical analysis on otolith data of anadromous fishes

Creator:: Gao, Yongwen, Conrad, Robert, Bean, David, and Noakes, David L. G.
Abstract:: Stable oxygen and carbon isotope δ[superscript 18]O and δ[superscript 13]C analyses of otoliths are becoming increasingly common in fisheries science and management. However, little is known about the statistical properties of isotopic data and few attempts have been made to explore appropriate statistical methods that could be used for otolith...
Resource Type:: Article
Full Text:: Yongwen Gao & Robert Conrad & David Bean & David L. G. Noakes Received: 14 March 2011 /Accepted: 18 July

Evidence for geomagnetic imprinting as a homing mechanism in Pacific salmon

Creator:: Putnam, Nathan F., Lohmann, Kenneth J., Putnam, Emily M., Quinn, Thomas P., Klimley, A. Peter, and Noakes, David L. G.
Abstract:: In the final phase of their spawning migration, Pacific salmon use chemical cues to identify their home river, but how they navigate from the open ocean to the correct coastal area has remained enigmatic [1]. To test the hypothesis that salmon imprint on the magnetic field that exists where they...
Resource Type:: Article
Full Text:: . Putman, Kenneth J. Lohmann, Emily M. Putman, Thomas P. Quinn, A. Peter Klimley & David L.G. Noakes

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

Gravel disturbance impacts on salmon habitat and stream health : volume 1 : summary report

Creator:: Williamson, Kenneth J., Bella, David A., Beschta, Robert L., Grant, Gordon, Klingeman, Peter C., Li, Hiram W., and Nelson, Peter O.
Abstract:: In this report, a response is given to the charge of this study. Volume I: Summary Report includes a synopsis of the technical considerations followed by the main findings and recommendations. The full technical background for these summary statements is given in detail in Volume II: Technical Background Report, and...
Resource Type:: Technical Report
Full Text:: University March 1995 Authors Kenneth J. Williamson, Director, OWRRI David A. Bella, Professor

Local and regional stressors interact to drive a salinization-induced outbreak of predators on oyster reefs

Creator:: Kimbro, David L., White, J. Wilson, Tillotson, Hanna, Cox, Nikkie, Christopher, Megan, Stokes-Cawley, Owen, Yuan, Samantha, Pusack, Timothy J., and Stallings, Christopher D.
Abstract:: Predator outbreaks are predicted to increasingly decimate economically and ecologically important prey populations because global climate change and food-web modifications frequently facilitate predators and stress prey. Natural systems are organized hierarchically, with processes operating at multiple scales giving rise to patterns of biodiversity, so predicting and managing outbreaks requires a...
Resource Type:: Article
Full Text:: salinization-induced outbreak of predators on oyster reefs DAVID L. KIMBRO,1,� J. WILSON WHITE,2 HANNA

Harmful algal blooms along the North American west coast region: History, trends, causes, and impacts

Creator:: Lewitus, Alan J., Horner, Rita A., Caron, David A., Garcia-Mendoza, Ernesto, Hickey, Barbara M., Hunter, Matthew, Huppert, Daniel D., Kudela, Raphael M., Langlois, Gregg W., Largier, John L., Lessard, Evelyn J., RaLonde, Raymond, Rensel, J. E. Jack, Strutton, Peter G., Trainer, Vera L., and Tweddle, Jacqueline F.
Abstract:: Along the Pacific coast of North America, from Alaska to Mexico, harmful algal blooms (HABs) have caused losses to natural resources and coastal economies, and have resulted in human sicknesses and deaths for decades. Recent reports indicate a possible increase in their prevalence and impacts of these events on living...
Resource Type:: Article
Full Text:: , causes, and impacts Alan J. Lewitus a,*, Rita A. Horner b, David A. Caron c, Ernesto Garcia-Mendoza d

ScholarsArchive@OSU

Translocating Adult Pacific Lamprey within the Columbia River Basin: State of the Science

Disentangling bottom-up and top-down effects on survival during early ocean residence in a population of Chinook salmon (Oncorhynchus tshawytscha)

A Dimensionless Invariant for Relative Size at Sex Change in Animals: Explanation and Implications

When is bigger better? Early marine residence of middle and upper Columbia River spring Chinook salmon

Statistical analysis on otolith data of anadromous fishes

Evidence for geomagnetic imprinting as a homing mechanism in Pacific salmon

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

Gravel disturbance impacts on salmon habitat and stream health : volume 1 : summary report

Local and regional stressors interact to drive a salinization-induced outbreak of predators on oyster reefs

Harmful algal blooms along the North American west coast region: History, trends, causes, and impacts

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