Index Catalog // ScholarsArchive@OSU

Multivariate Models of Adult Pacific Salmon Returns

Creator:: Burke, Brian J., Peterson, William T., Beckman, Brian R., Morgan, Cheryl, Daly, Elizabeth A., and Litz, Marisa
Abstract:: 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 been highly variable over the last few decades and most forecasting models have proven inadequate, primarily because of a lack of understanding...
Resource Type:: Article
Full Text:: State University, Cooperative Institute for Marine Resources Studies, Newport, Oregon, United States of

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:: State University, 2030 SE Marine Science Drive, Newport, Oregon 97365, USA 2NOAA Fisheries, Northwest

The state of California, 2003 - 2004 : a rare "normal" year

Creator:: Goericke, Ralf, Venrick, Elizabeth, Mantyla, Arnold W., Bograd, Steven J., Schwing, Franklin B., Huyer, Adriana, 1945-, Smith, Robert L. (Robert Lloyd), 1935-, Wheeler, Patricia A., Hooff, Rian, Peterson, William T., Gaxiola-Castro, Gilberto, Gomez-Valdes, Jose, Lavaniegos, Bertha E., Hyrenbach, K. David, and Sydeman, William J.
Abstract:: This report describes the state of the California Current System (CCS)—meteorological, physical, chemical, and biological—from January 2003 to the spring of 2004. The area covered in this report ranges from Oregon coastal waters to southern Baja California. Over the past year, most physical, chemical, and biological parameters were close to...
Resource Type:: Article
Full Text:: College of Oceanic and Atmospheric Science Oregon State University Corvallis, Oregon 97331-5503 ahuyer

Monitoring Oregon Coastal Harmful Algae: Observations and implications of a harmful algal bloom-monitoring project

Creator:: McKibben, S. Morgaine, Watkins-Brandt, Katie S., Wood, A. Michelle, Hunter, Matthew, Forster, Zach, Hopkins, Alyssa, Du, Xiuning, Eberhart, Bich-Thuy, Peterson, William T., and White, Angelicque E.
Abstract:: The accumulation of domoic acid (DA) and saxitoxins (STX), phycotoxins produced by some species of Pseudo-nitzschia and Alexandrium, respectively, in coastal food webs are a focus of research on the West Coast of the United States due to the deleterious effects they have on coastal ecosystems and economies. Results are...
Resource Type:: Article
Full Text:: a a College of Earth, Ocean & Atmospheric Sciences, Oregon State University, 104 CEOAS

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:: Marine resources studies oregon state University Hatfield Marine science center Newport, or 97365

Biological indicators of the timing and direction of warm-water advection during the 1997/1998 El Niño off the central Oregon coast, USA

Creator:: Keister, Julie E., Johnson, Travis B., Morgan, Cheryl A., and Peterson, William T.
Abstract:: Unusual collections of several euphausiid, chaetognath, and copepod species help elucidate the effects of the strong 1997/1998 El Niño off the central Oregon, USA, coast. Furcilia of Nyctiphanes simplex, a euphausiid typically found only as far north as central California, were collected in bi-weekly nearshore samples between December 1997 and...
Resource Type:: Article
Full Text:: Oregon, were collected 103 km off the Columbia River (Stn CR55, 46° 16.0’ N, 125° 25.2’ W, >2000 m water

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

Creator:: Rupp, David E., Wainwright, Thomas C., Lawson, Peter W., and Peterson, William T.
Abstract:: 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 environment. Nine indices were examined, ranging from large-scale ocean indicators, e.g., Pacific Decadal Oscillation (PDO), to indicators of the local ecosystem...
Resource Type:: Article
Full Text:: Science Center, Oregon State University, Newport, OR 97365, USA 2NOAA ⁄NMFS, Northwest Fisheries Science

Egg production rates of the copepod Calanus marshallae in relation to seasonal and interannual variations in microplankton biomass and species composition in the coastal upwelling zone off Oregon, USA

Creator:: Peterson, William T. and Du, Xiuning
Abstract:: In this study, we assessed trophic interactions between microplankton and copepods by studying the functional response of egg production rates (EPR; eggs female⁻¹day⁻¹) of the copepod Calanus marshallae to variations in microplankton biomass, species composition and community structure. Female C. marshallae and phytoplankton water samples were collected biweekly at an...
Resource Type:: Article
Full Text:: Center, Newport, OR, United States bCooperative Institute for Marine Resources Studies, Oregon State

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
Full Text:: Department of Fish and Wildlife, 600 Capitol Way, North Olympia, WA 98501, USA; Oregon State University

Physical versus biological spring transition: 2005

Creator:: Kosro, P. Michael, 1951-, Peterson, William T., Hickey, Barbara M., Shearman, R. Kipp, and Pierce, Stephen D.
Abstract:: In 2005, the onset of spring conditions in the physics of the coastal ocean (lowered sea level, spin-up of vertically-sheared equatorward coastal jet) came about 50 days later than average off Newport Oregon, on May 24. There was a further delay of 50 days before the subsurface upwelled water penetrated...
Resource Type:: Article
Full Text:: of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon, USA. 2National

ScholarsArchive@OSU

Multivariate Models of Adult Pacific Salmon Returns

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

The state of California, 2003 - 2004 : a rare "normal" year

Monitoring Oregon Coastal Harmful Algae: Observations and implications of a harmful algal bloom-monitoring project

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

Biological indicators of the timing and direction of warm-water advection during the 1997/1998 El Niño off the central Oregon coast, USA

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

Egg production rates of the copepod Calanus marshallae in relation to seasonal and interannual variations in microplankton biomass and species composition in the coastal upwelling zone off Oregon, USA

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

Physical versus biological spring transition: 2005

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