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Browsing Hatfield Marine Science Center by Title

Now showing items 116-135 of 210

Large medusae in surface waters of the Northern California Current: variability in relation to environmental conditions

Suchman, Cynthia L.; Brodeur, Richard D.; Daly, Elizabeth A.; Emmett, Robert L. (Springer, 2012-07)

Blooms of jellyfish around the world have been correlated with climatic variables related to environmental causes. Sizeable populations of large medusae, primarily Chrysaora fuscescens and Aequorea sp., appear annually i ...
Larval development of Euphausia pacifica in the laboratory: variability in developmental pathways

Feinberg, Leah R.; Shaw, C. Tracy; Peterson, William T. (Inter Research, 2006-07-03)

Gravid adult female Euphausia pacifica were collected off Newport, Oregon, USA and transferred to the laboratory, where females spawned eggs, eggs hatched, and larvae were reared at 10.5 degrees C. We fed 4 cohorts of la ...
Light-induced changes in the prey consumption and behavior of two juvenile planktivorous fish

Ryer, Clifford H.; Bori L., Olla (Inter-Research, 1999-05-18)

Walleye pollock and sablefish, as 0+ yr juveniles, are pelagic particulate feeding planktivores. We conducted a series of laboratory experiments to determine how illumination influences prey consumption in these species, ...
Linking predators to seasonality of upwelling: Using food web indicators and path analysis to infer trophic connections

Thompson, Sarah Ann; Sydeman, William J.; Santora, Jarrod A.; Black, Bryan A.; Suryan, Robert M.; Calambokidis, John; Peterson, William T.; Bograd, Steven J. (Elsevier, 2012-08)

Upwelling in eastern boundary current systems is a primary driver of ecosystem productivity. Typically, peak upwelling occurs during spring and summer, but winter upwelling may also be important to ecosystem functions. I ...
Management of Pacific Rockfish

Parker, S.J.; Berkeley, S.A.; Golden, J.T.; Gunderson, D.R.; Heifetz, J.; Hixon, M.A.; Larson, R.; Leaman, B.M.; Love, M.S.; Musick, J.A.; O'Connell, V.M.; Ralston, S.; Weeks, H.J.; Yoklavich, M.M. (American Fisheries Society, 2000-03)

The American Fisheries Society (AFS) recognizes the need for conservative and robust management of Pacific rockfishes because of naturally low population growth, the overfished state of many of the stocks, and complex na ...
Marine distributions of chinook salmon from the West Coast of North America determined by coded wire tag recoveries

Weitkamp, Laurie A. (American Fisheries Society, 2010-01)

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 use ...
Marine environment-based forecasting of coho salmon (Oncorhynchus kisutch) adult recruitment

Rupp, David E.; Wainwright, Thomas C.; Lawson, Peter W.; Peterson, William T. (Blackwell Publishing Ltd, 2012-01-19)

Generalized additive models (GAMs) were used to investigate the relationships between annual recruitment of natural coho salmon (Oncorhynchus kisutch) from Oregon coastal rivers and indices of the physical ocean environm ...
Marine Mammal & Marine Research Facilty, Hatfield Marine Science Center Newport, Oregon

gLAS Architectural Group (Oregon State University, 2007-03)

Marine and coastal sciences represent a major strength of Oregon State University. Through a combination of research, education, and outreach, OSU scientists improve the understanding of our marine and coastal envir ...
Marine, Estuarine, and Diadromous Fish Stocks at Risk of Extinction in North America (Exclusive of Pacific Salmonids)

Musick, J.A.; Harbin, M.M.; Berkeley, S.A.; Burgess, G.H.; Eklund, A.M.; Findley, L.; Gilmore, R.G.; Golden, J.T.; Ha, D.S.; Huntsman, G.R.; McGovern, J.C.; Sedberry, G.R.; Parker, S.J.; Poss, S.G.; Sala, E.; Schmidt, T.W.; Weeks, H.; Wright, S.G. (American Fisheries Society, 2000-11)

The problem of extinction in the sea has been recognized only recently by the scientific community (Roberts and Hawkins 1999). For the last decade, the American Fisheries Society (AFS) has pursued an initiative to ide ...
Market Information and Fisheries Management: A Multiple-Objective Analysis

Sylvia, Gilbert (American Fisheries Society, 1994-05)

Market issues are often critical to the regional and national benefits that can be generated from fisheries management. In actual policy analysis, however, market considerations are often treated as exogenous to the fish ...
Mass Abundances of Abnormal Pacific Herring Larvae at a Spawning Ground in British Columbia

Purcell, Jennifer E.; Grosse, Daniel; Grover, Jill J. (American Fisheries Society, 1990-05)

Abnormalities including contortion of the body and reduction of the jaws and pectoral fins occurred among 2-25% of the yolk-sac Pacific herring larvae Clupea harengus pallasi collected in 1985 from Kulleet Bay, a spawni ...
Microsatellites Reveal Population Identity of Individual Pink Salmon to Allow Supportive Breeding of a Population at Risk of Extinction

Olsen, Jeffrey B.; Bentzen, Paul; Banks, Michael A.; Shaklee, James B.; Young, Sewall (American Fisheries Society, 2000-01)

Efforts to restore depressed populations of Pacific salmon Oncorhynchus spp. are often hampered by the inability to assign population identity to individuals in an admixture. This knowledge is of particular concern in su ...
The mitochondrial genomes of Euphausia pacifica and Thysanoessa raschii sequenced using 454 next-generation sequencing, with a phylogenetic analysis of their position in the Malacostracan family tree

Johansson, Mattias L.; Sremba, Angela L.; Feinberg, Leah R.; Banks, Michael A.; Peterson, William T. (Springer, 2012-09)

Euphausiid krill play a critical role in coastal and oceanic food webs, linking primary producers to upper trophic levels. In addition, some species support commercial fisheries worldwide. Despite their ecological import ...
Mortality of Lingcod Towed in a Net as Related to Fish Length, Seawater Temperature, and Air Exposure: A Laboratory Bycatch Study

Davis, Michael W.; Olla, Bori L. (American Fisheries Society, 2002-11)

The mortality of discarded bycatch is a critical problem in the management of fisheries worldwide. Little is known about the key principles involved in the mortality of discarded bycatch. These principles are best elabor ...
Multivariate Models of Adult Pacific Salmon Returns

Burke, Brian J.; Peterson, William T.; Beckman, Brian R.; Morgan, Cheryl; Daly, Elizabeth A.; Litz, Marisa (Public Library of Science, 2013-01-11)

Most modeling and statistical approaches encourage simplicity, yet ecological processes are often complex, as they are influenced by numerous dynamic environmental and biological factors. Pacific salmon abundance has bee ...
Municipal water management in Oregon Coastal Communities : surmounting the "Conservation Paradox"

Quigley, Kate; Sylvia, Gilbert; Oregon State University. Sea Grant College Program; Coastal Oregon Marine Experiment Station (COMES) ([Corvallis, Or.] : Coastal Oregon, 2000-09)
Native oyster investigations of Yaquina Bay, Oregon : progress report II, covering the period July 4, 1939 to September 30, 1941

Dimick, Roland Eugene, 1900-; Egland, George; Long, Jay B. (Corvallis, Or. : Oregon Agricultural Research Station, 1941-01-04)
Near-Real-Time Acoustic Monitoring of Beaked Whales and Other Cetaceans Using a Seaglider (TM)

Klinck, Holger; Mellinger, David K.; Klinck, Karolin; Bogue, Neil M.; Luby, James C.; Jump, William A.; Shilling, Geoffrey B.; Litchendorf, Trina; Wood, Angela S.; Schorr, Gregory S.; Baird, Robin W. (Public Library of Science, 2012-05-18)

In most areas, estimating the presence and distribution of cryptic marine mammal species, such as beaked whales, is extremely difficult using traditional observational techniques such as ship-based visual line transect ...
Neutralizing monoclonal antibodies recognize antigenic variants among isolates of infectious hematopoietic necrosis virus

Winton, J.R.; Arakawa, C.K.; Lannan, C.N.; Fryer, J.L. (Inter-Research, 1988-07-27)

Neutralizing monoclonal antibodies were developed against strains of infectious hematopoietic necrosis virus (IHNV) from steelhead trout Salmo gairdneri in the Deschutes River of Oregon, chinook salmon Oncorhynchus tshaw ...
New approach for using remotely sensed chlorophyll a to identify seabird hotspots

Suryan, Robert M.; Santora, Jarrod A.; Sydeman, William J. (Inter-Research, 2012-04-11)

Satellite imagery of chlorophyll a concentration (chl a) provides the only holistic perspective of productivity in marine ecosystems worldwide, yet its utility for understanding and predicting the distribution of upper ...