Index Catalog // ScholarsArchive@OSU

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

Dividing up the pie: Whales, fish, and humans as competitors

Creator:: Ruzicka, James J., Steele, John H., Ballerini, Tosca, Gaichas, Sarah K., and Ainley, David G.
Abstract:: Similarly structured food web models of four coastal ecosystems (Northern California Current, Central Gulf of Alaska, Georges Bank, southwestern Antarctic Peninsula) were used to investigate competition among whales, fishes, pinnipeds, and humans. Two analysis strategies simulated the effects of historic baleen and odontocete whale abundances across all trophic levels: food...
Resource Type:: Article
Full Text:: .: +1 541 867 0382. E-mail address: Jim.Ruzicka@oregonstate.edu (J.J. Ruzicka). James J. Ruzicka a

A comparison of the survival and migratory behavior of hatchery-reared and naturally reared steelhead smolts in the Alsea River and estuary, Oregon, using acoustic telemetry

Creator:: Johnson, Steven L., Power, James Harry, Wilson, Derek R., and Ray, James
Abstract:: We tracked three groups of steelhead Oncorhynchus mykiss smolts implanted with acoustic transmitters to determine whether the degree of hatchery domestication or the juvenile rearing environment (hatchery raceway versus natural stream) influenced migration timing and survival in the Alsea River and estuary, Oregon. Two groups consisted of age-1 smolts reared...
Resource Type:: Article
Full Text:: Telemetry Steven L. Johnson a , James Harry Power b , Derek R. Wilson c & James Ray c a Oregon Department of

Hydrothermal Discharge During Submarine Eruptions

Creator:: Baker, Edward T., Chadwick, Wi l l iam W. Jr., Cowen, James P., Dziak, Robert P., Rubin, Kenneth H., and Fornari, Daniel J.
Abstract:: Submarine volcanic eruptions and intrusions construct new oceanic crust and build long chains of volcanic islands and vast submarine plateaus. Magmatic events are a primary agent for the transfer of heat, chemicals, and even microbes from the crust to the ocean, but the processes that control these transfers are poorly...
Resource Type:: Article
Full Text:: 2000 p r O g r a m r e S e a r c h Oceanography | Vol. 25, No. 1128 hydrothermal discharge during

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:: , zooplankton, and gelatinous zooplankton ecology. By Kelly L. Robinson, James J. Ruzicka, Mary Beth Decker

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
Full Text:: P. - almost! exclu.si vel:y mussel dominated the area of zone two and h d many species of animals

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

Microsatellites Reveal Population Identity of Individual Pink Salmon to Allow Supportive Breeding of a Population at Risk of Extinction

Creator:: Olsen, Jeffrey B., Bentzen, Paul, Banks, Michael A., Shaklee, James B., and Young, Sewall
Abstract:: 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 supportive breeding programs, in which misidentification of individuals to population may result in progeny of mixed heritage, which,...
Resource Type:: Article
Full Text:: , James B. Shaklee c & Sewall Young c a Marine Molecular Biotechnology Laboratory, University of

Long Term Trends and Sources of Sound in United States Waters

Creator:: Haver, Samara M.
Abstract:: Passive acoustic monitoring is a valuable tool for observing the status of marine environments. Comparisons of underwater soundscapes over temporal and spatial scales can provide data to inform marine conservation efforts, including protection of threatened and endangered species. This dissertation utilizes passive acoustic data collected via a broadly spaced array...
Resource Type:: Dissertation
Full Text:: Fisheries and Wildlife (Munson Wildlife, Robert Anthony, Thomas G. Scott, James R. Sedell, Henry Mastin

Near-Real-Time Acoustic Monitoring of Beaked Whales and Other Cetaceans Using a Seaglider (TM)

Creator:: 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., and Baird, Robin W.
Abstract:: Correction 10 Aug 2012: Klinck H, Mellinger DK, Klinck K, Bogue NM, Luby JC, et al. (2012) Correction: Near-Real-Time Acoustic Monitoring of Beaked Whales and Other Cetaceans Using a Seaglider™. PLOS ONE 7(8): 10.1371/annotation/57ad0b82-87c4-472d-b90b-b9c6f84947f8.
Resource Type:: Article
Full Text:: , Neil M. Bogue2, James C. Luby2, William A. Jump2, Geoffrey B. Shilling2, Trina Litchendorf2, Angela S

ScholarsArchive@OSU

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

Dividing up the pie: Whales, fish, and humans as competitors

A comparison of the survival and migratory behavior of hatchery-reared and naturally reared steelhead smolts in the Alsea River and estuary, Oregon, using acoustic telemetry

Hydrothermal Discharge During Submarine Eruptions

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

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

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

Microsatellites Reveal Population Identity of Individual Pink Salmon to Allow Supportive Breeding of a Population at Risk of Extinction

Long Term Trends and Sources of Sound in United States Waters

Near-Real-Time Acoustic Monitoring of Beaked Whales and Other Cetaceans Using a Seaglider (TM)

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