Index Catalog // ScholarsArchive@OSU

Seasonal and interannual variation in the extent of hypoxia in the northern California Current from 1998–2012

Creator:: Peterson, Jay O., Morgan, Cheryl A., Peterson, William T., and Di Lorenzo, Emanuele
Abstract:: This study addresses the occurrence, severity, and extent of hypoxia over the continental shelf of the northern California Current (40–48.5°N latitude) from 1998 to 2012. Clear seasonal trends exist in the timing and duration of hypoxia. The highest bottom-water dissolved oxygen concentrations occurred from November to March, and levels below...
Resource Type:: Article
Full Text:: Peterson, Jay O., Cheryl A. Morgan, William Seasonal and

A comparative analysis of coastal and shelf-slope copepod communities in the northern California Current system: Synchronized response to large-scale forcing?

Creator:: Bi, Hongsheng, Peterson, William T., Peterson, Jay O., and Fisher, Jennifer L.
Abstract:: The synchrony between coastal and shelf-slope copepod communities was investigated in the northern California Current (NCC) system, a strong upwelling zone, using time series of zooplankton sampled from a nearshore station (9 km offshore, water depth 62 m) and a shelf-slope station (46 km offshore, water depth 297 m). Long-term...
Resource Type:: Article
Full Text:: Bi, Hongsheng, William T. Peterson, Jay O. Peterson, and Jennifer

Multiple trophic levels fueled by recirculation in the Columbia River plume

Creator:: Kudela, Raphael M., Horner-Devine, Alexander R., Banas, Neil S., Hickey, Barbara M., Peterson, Tawnya D., McCabe, Ryan M., Lessard, Evelyn J., Frame, Elizabeth, Bruland, Kenneth W., Jay, David A., Peterson, Jay O., Peterson, William T., Kosro, P. Michael, Palacios, Sherry L., Lohan, Maeve C., and Dever, Edward P.
Abstract:: Large rivers represent gateways for the transport of terrigenous and anthropogenic material to the coastal ocean. Here we document a ∼700 km2 recirculation or bulge associated with the Columbia River plume that retains recently discharged river water sufficiently to create a regional bioreactor. Fueled by a fluvial nitrate source, this...
Resource Type:: Article
Full Text:: ,1 David A. Jay,6 Jay O. Peterson,7 William T. Peterson,5 P. Michael Kosro,8 Sherry L. Palacios,1

State of the California Current 2011–2012: Ecosystems Respond To Local Forcing as La Nina Wavers and Wanes

Creator:: Bjorkstedt, Eric P., Goericke, Ralf, McClatchie, Sam, Weber, Ed, Watson, William, Lo, Nancy, Peterson, William T., Brodeur, Richard D., Auth, Toby, Fisher, Jennifer, Morgan, Cheryl, Peterson, Jay, Largier, John, Bograd, Steven J., Durazo, Reginaldo, Gaxiola-Castro, Gilberto, Lavaniegos, Bertha, Chavez, Francisco P., Collins, Curtis A., Hannah, Bob, Field, John, Sakuma, Keith, Satterthwaite, Will, O'Farrell, Michael, Hayes, Sean, Harding, Jeff, Sydeman, William J., Thompson, Sarah Ann, Warzybok, Pete, Bradley, Russell, Jahncke, Jaime, Golightly, Richard T., Schneider, Stephanie R., Suryan, Robert M., Gladics, Amanda J., Horton, Cheryl A., Kim, Sung Yong, Melin, Sharon R., DeLong, Robert L., and Abell, Jeffrey
Abstract:: The state of the California Current System (CCS) since spring 2011 has evolved in response to dissipation of La Niña through spring and summer, resurgence of cooler La Niña conditions in fall and winter, and finally a transition towards ENSO-neutral conditions in spring 2012. The resurgence of La Niña was...
Resource Type:: Article
Full Text:: Newport, or 97365 toBy AUtH, jENNiFEr FisHEr, cHEryl MorGAN, jAy PEtErsoN cooperative institute for

WhiteAngelicqueCEOASLarge-ScaleBloom.pdf

Creator:: White, Angelicque E., Watkins-Brandt, Katie S., McKibben, S. Morgaine, Du, Xiuning, Peterson, William T., and et al.
Abstract:: Significant seabird mortality on the Oregon (OR) and Washington (WA) coast in 2009 has been attributed to a massive bloom of the dinoflagellate Akashiwo sanguinea (K. Hirasaka) G. Hansen & Ø. Moestrup. Initial, albeit limited, observations suggested this bloom began in WA and reached OR waters through southward transport. Here,...
Full Text:: . Kudela, R.M., Banas, N.S., Barth, J.A., Frame, E.R., Jay, D.A., Larcier, J.L., Lessard, E.J., Peterson

Transport and coastal zooplankton communities in the northern California Current system

Creator:: Bi, Hongsheng, Peterson, William T., and Strub, Paul T.
Abstract:: Alongshore transport was estimated from the gridded AVISO altimeter data and water level data from NOAA tide gauges (1993–2010) for the northern California Current (NCC) system. The biomass of the cold neritic copepods including Calanus marshallae, Pseudocalanus mimus and Acartia longiremis (dominants in the eastern Bering Sea, coastal Gulf of...
Resource Type:: Article
Full Text:: processing of data: Craig Risien, Jay Peterson, Leah Feinberg, Tracy Shaw, Jennifer Menkel, Rian Hooff, Karen

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:: conditions in winter to predomi- nantly upwelling conditions in summer (for review, see Checkley & Barth 2009

BatchelderHaroldCEOASClimateImpactsZooplankton_SupplementalMaterials.xls

Creator:: Batchelder, Harold P., Daly, Kendra L., Davis, Cabell S., Ji, Rubao, Ohman, Mark D., Peterson, William T., and Runge, Jeffrey A.
Abstract:: The 20-year US GLOBEC (Global Ocean Ecosystem Dynamics) program examined zooplankton populations and their predators in four coastal marine ecosystems. Program scientists learned that environmental controls on zooplankton vital rates, especially the timing and magnitude of reproduction, growth, life-cycle progression, and mortality, determine species population dynamics, seasonal and spatial distributions,...

The impact of El Niño events on the pelagic food chain in the northern California Current

Creator:: Fisher, Jennifer L., Peterson, William T., and Rykaczewski, Ryan R.
Abstract:: The zooplankton of the northern California Current are typically characterized by an abundance of lipid-rich copepods that support rapid growth and survival of ecologically, commercially, and recreationally valued fish, birds, and mammals. Disruption of this food chain and reduced ecosystem productivity are often associated with climatic variability such as El...
Resource Type:: Article
Full Text:: ; Checkley & Barth, 2009; Jacox et al., 2015) and large-scale ocean circulation (Alexander et al., 2002; Di

Influence of ocean ecosystem variation on trophic interactions and survival of juvenile coho and Chinook salmon

Creator:: Losee, James P., Miller, Jessica A., Peterson, William T., Teel, David J., and Jacobson, Kym C.
Abstract:: The community of trophically transmitted marine parasites of juvenile coho (Oncorhynchus kisutch) and Chinook (Oncorhynchus tshawytscha) salmon across 8 years (2002–2009) was related to indices of physical and biological ocean conditions and adult returns. When the biomass of lipid-poor, southern origin copepods in the coastal ocean was high during juvenile...
Resource Type:: Article

ScholarsArchive@OSU

Seasonal and interannual variation in the extent of hypoxia in the northern California Current from 1998–2012

A comparative analysis of coastal and shelf-slope copepod communities in the northern California Current system: Synchronized response to large-scale forcing?

Multiple trophic levels fueled by recirculation in the Columbia River plume

State of the California Current 2011–2012: Ecosystems Respond To Local Forcing as La Nina Wavers and Wanes

WhiteAngelicqueCEOASLarge-ScaleBloom.pdf

Transport and coastal zooplankton communities in the northern California Current system

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

BatchelderHaroldCEOASClimateImpactsZooplankton_SupplementalMaterials.xls

The impact of El Niño events on the pelagic food chain in the northern California Current

Influence of ocean ecosystem variation on trophic interactions and survival of juvenile coho and Chinook salmon

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