Index Catalog // ScholarsArchive@OSU

Seasonal food web models for the Oregon inner-shelf ecosystem : investigating the role of large jellyfish

Creator:: Ruzicka, James J., Brodeur, Richard D., and Wainwright, Thomas C.
Abstract:: Previously published in California Cooperative Oceanic Fisheries Investigations Progress Report, 2007, Vol.48; access courtesy of publisher and authors.
Resource Type:: Research Paper
Full Text:: ROLE OF LARGE JELLYFISH JAMES J. RUZICKA RICHARD D. BRODEUR AND THOMAS C. WAINWRIGHT Cooperative

Evidence that summer jellyfish blooms impact Pacific Northwest salmon production

Creator:: Ruzicka, James J., Daly, Elizabeth A., and Brodeur, Richard D.
Abstract:: Interannual variability in salmon (Oncorhynchus spp.) production in the northeast Pacific is understood to be driven by oceanographic variability and bottom-up processes affecting prey availability to juvenile salmon. Scyphozoan jellyfish have an important role in shaping the pathways of energy flow through pelagic food webs. While jellyfish obtain high production...
Resource Type:: Article

A study of the effects of a wave gradient on intertidal zonation at Yaquina Head, Lincoln County, Oregon

Creator:: Davis, Michael W., Arana, Patricio, Reid, James, and Schrock, Richard
Abstract:: This is a student report which studies the effects of wave action on intertidal zonation at Yaquina Head. It includes hand-drawn diagrams of quadrants sampled at the location.
Resource Type:: Technical Report

Climate shifts the interaction web of a marine plankton community

Creator:: Francis, Tessa B., Scheuerell, Mark D., Brodeur, Richard D., Levin, Phillip S., Ruzicka, James J., Tolimieri, Nick, and Peterson, William T.
Abstract:: Climatic effects in the ocean at the community level are poorly described, yet accurate predictions about ecosystem responses to changing environmental conditions rely on understanding biotic responses in a food-web context to support knowledge about direct biotic responses to the physical environment. Here we conduct time-series analyses with multivariate autoregressive...
Resource Type:: Article
Full Text:: LL I P S . LEV IN * , JAMES J . RUZ ICKA ‡ , N ICK TOL IM IER I * and WILLIAM T. PETERSON

Jellyfish, Forage Fish, and the World’s Major Fisheries

Creator:: Robinson, Kelly L., Ruzicka, James J., Decker, Mary Beth, Brodeur, Richard D., Hernandez, Frank J., Quiñones, Javier, Acha, E. Marcelo, Uye, Shin-ichi, Mianzan, Hermes, and Graham, William M.
Abstract:: A majority of the world’s largest net-based fisheries target planktivorous forage fish that serve as a critical trophic link between the plankton and upper-level consumers such as large predatory fishes, seabirds, and marine mammals. Because the plankton production that drives forage fish also drives jellyfish production, these taxa often overlap...
Resource Type:: Article
Full Text:: Kelly L. Robinson, James J. Ruzicka, Mary Beth Decker, Richard D. Brodeur, Frank J. Hernandez, Javier

Interannual variability in the Northern California Current food web structure: Changes in energy flow pathways and the role of forage fish, euphausiids, and jellyfish

Creator:: Ruzicka, James J., Brodeur, Richard D., Emmett, Robert L., Steele, John H., Zamon, Jeannette E., Morgan, Cheryl A., Thomas, Andrew C., and Wainwright, Thomas C.
Abstract:: The Northern California Current (NCC) is a seasonally productive and open ecosystem. It is home to both a diverse endemic community and to seasonally transient species. Productivity and food web structure vary seasonally, interannually, and decadally due to variability in coastal upwelling, climate-scale physical processes, and the migratory species entering...
Resource Type:: Article
Full Text:: energy flow pathways and the role of forage fish, euphausiids, and jellyfish James J. Ruzicka a

Prey dominance shapes trophic structure of the northern California Current pelagic food web: evidence from stable isotopes and diet analysis

Creator:: Miller, Todd W., Brodeur, Richard D., Rau, Greg, and Omori, Koji
Abstract:: Eastern boundary current (EBC) upwelling zones are among the most productive of marine ecosystems globally and have been generalized in terms of their food web structure. Little empirically based evidence exists to suggest that there is any one form of trophic control of EBC systems and, because of logistical constraints,...
Resource Type:: Article
Full Text:: diet analysis Todd W. Miller1,*, Richard D. Brodeur2, Greg Rau3, Koji Omori1 1Center for Marine

Species composition and community structure of pelagic nekton off Oregon and Washington under variable oceanographic conditions

Creator:: Brodeur, Richard D., Fisher, Joseph P., Emmett, Robert L., Morgan, Cheryl A., and Casillas, Ed
Abstract:: Dramatic changes in the physical and biological conditions off Washington and Oregon, USA, have occurred since 1998, including extreme El Niño (warm) and La Niña (cool) years, high and low Columbia River flow years, a major intrusion of subarctic water, and a low oxygen event on the shelf. The occurrence...
Resource Type:: Article
Full Text:: Richard D. Brodeur1,*, Joseph P. Fisher2, Robert L. Emmett1, Cheryl A. Morgan3, Ed Casillas4 1Northwest

1984/1985 Annual Report

Creator:: Hatfield Marine Science Center
Abstract:: Report year ends June 25.
Resource Type:: Other
Full Text:: neuron following axotomy. Journal of Neurobiology. 16(2):137-151. Richard, David L. Barker, S.B. Kater

1982/1983 Annual Report

Creator:: Hatfield Marine Science Center
Resource Type:: Other
Full Text:: Pacific Workshop. Washington Sea Grant, Seattle, Washington. 312 pp. BRODEUR, RICHARD D. Peterson

ScholarsArchive@OSU

Seasonal food web models for the Oregon inner-shelf ecosystem : investigating the role of large jellyfish

Evidence that summer jellyfish blooms impact Pacific Northwest salmon production

A study of the effects of a wave gradient on intertidal zonation at Yaquina Head, Lincoln County, Oregon

Climate shifts the interaction web of a marine plankton community

Jellyfish, Forage Fish, and the World’s Major Fisheries

Interannual variability in the Northern California Current food web structure: Changes in energy flow pathways and the role of forage fish, euphausiids, and jellyfish

Prey dominance shapes trophic structure of the northern California Current pelagic food web: evidence from stable isotopes and diet analysis

Species composition and community structure of pelagic nekton off Oregon and Washington under variable oceanographic conditions

1984/1985 Annual Report

1982/1983 Annual Report

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