Index Catalog // ScholarsArchive@OSU

New approach for using remotely sensed chlorophyll a to identify seabird hotspots

Creator:: Suryan, Robert M., Santora, Jarrod A., and Sydeman, William J.
Abstract:: 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 trophic-level predators remains equivocal. We tested the hypothesis that remotely sensed chl a measurements spanning a decade can predict marine...
Resource Type:: Article
Full Text:: . Suryan1,*, Jarrod A. Santora2, William J. Sydeman2,3 1Oregon State University, Hatfield Marine Science

Winter dispersal and activity patterns of post-breeding black-legged kittiwakes Rissa tridactyla from Prince William Sound, Alaska

Creator:: McKnight, Aly, Irons, David B., Allyn, Andrew J., Sullivan, Kelsey M., and Suryan, Robert M.
Abstract:: As colony-specific wintering ecology of small and medium-sized seabirds is poorly understood, it has been generally assumed that winter conditions have the same effect on all individuals from any given colony. However, advances in global positioning technology now allow researchers to investigate movements of smaller seabirds. We tracked black-legged kittiwakes...
Resource Type:: Article
Full Text:: activity patterns of post- breeding black-legged kittiwakes Rissa tridactyla from Prince William Sound

Linking predators to seasonality of upwelling: Using food web indicators and path analysis to infer trophic connections

Creator:: Thompson, Sarah Ann, Sydeman, William J., Santora, Jarrod A., Black, Bryan A., Suryan, Robert M., Calambokidis, John, Peterson, William T., and Bograd, Steven J.
Abstract:: 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. In this study, we investigated the hypothesis that winter and spring/summer upwelling, operating through indirect trophic interactions, are important...
Resource Type:: Article
Full Text:: ,⇑, William J. Sydeman a, Jarrod A. Santora a, Bryan A. Black b, Robert M. Suryan b, John Calambokidis c

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:: , California 92093-0218 K. DAVID HYRENBACH, WILLIAM J. SYDEMAN Marine Ecology Division Point Reyes Bird

Climate Change Impacts on Marine Ecosystems

Creator:: Doney, Scott C., Ruckelshaus, Mary, Duffy, J. Emmett, Barry, James P., Chan, Francis, English, Chad A., Galindo, Heather M., Grebmeier, Jacqueline M., Hollowed, Anne B., Knowlton, Nancy, Polovina, Jeffrey, Rabalais, Nancy N., Sydeman, William J., and Talley, Lynne D.
Abstract:: In marine ecosystems, rising atmospheric CO2 and climate change are associated with concurrent shifts in temperature, circulation, stratification, nutrient input, oxygen content, and ocean acidification, with potentially wideranging biological effects. Population-level shifts are occurring because of physiological intolerance to new environments, altered dispersal patterns, and changes in species interactions. Together...
Resource Type:: Article
Full Text:: . Grebmeier, Anne B. Hollowed, Nancy Knowlton, Jeffrey Polovina, Nancy N. Rabalais, William J. Sydeman, and

The state of California current, 2000 – 2001 : a third straight La Niña year

Creator:: Durazo, Reginaldo, Collins, Curtis A., Hyrenbach, David K., Schwing, Franklin B., Baumgartner, Timothy R., García, Joaqúin, Loya, Daniel, Smith, Robert L. (Robert Lloyd), 1935-, Wheeler, Patricia A., Bograd, Steven J., Huyer, Adriana, 1945-, Lynn, Ronald J., and Sydeman, William J.
Abstract:: This report is the eighth in a series that describe recent oceanographic observations within the California Current system, from Oregon to Baja California. The emphasis here is placed on the observations conducted concurrently by the CalCOFI (California Cooperative Oceanic Fisheries Investigations), IMECOCAL (Investigaciones Mexicanas de la COrriente de CALifornia), and...
Resource Type:: Article
Full Text:: , California 92038 WILLIAM J. SYLIEMAN Point lieyes Bird Obtervatory Marine Science l’rogram 4900

The state of California, 2003 - 2004 : still cool?

Creator:: Goericke, Ralf, Venrick, Elizabeth, Mantyla, Arnold W., Hooff, Rian, Collins, Curtis A., Gaxiola-Castro, Gilberto, Bograd, Steven J., Schwing, Franklin B., Peterson, William T., Marinovic, Baldo, Durazo, Reginaldo, Huyer, Adriana, 1945-, Smith, Robert L. (Robert Lloyd), 1935-, Wheeler, Patricia A., Chavez, Francisco, Lo, Nancy, Hyrenbach, K. David, and Sydeman, William J.
Abstract:: This report summarizes the recent state of the California Current System (CCS), primarily during the period of April 2004 to January 2005. The report is based on observations made between Oregon and Baja California by various ocean observing programs. The CCS was not forced by any coherent basin-wide processes during...
Resource Type:: Article
Full Text:: , Departamento de Oceanografía Biológica Facultad de Ciencias Marinas WILLIAM J. SYDEMAN Centro de Investigación

The state of California current, 2001 – 2002 : will the Californa current system keep its cool, or is El Niño coming?

Creator:: Schwing, Franklin B., Gaxiola-Castro, Gilberto, Goméz-Valdéz, José, Kosro, P. Michael, 1951-, Mantyla, Arnold W., Smith, Robert L. (Robert Lloyd), 1935-, Bograd, Steven J., García, Joaqúin, Huyer, Adriana, 1945-, Lavaniegos, Bertha E., Ohman, Mark D., Sydeman, William J., Wheeler, Patricia A., Collins, Curtis A., Goericke, Ralf, Hyrenbach, K. David, Lynn, Ronald J., Peterson, William T., and Venrick, Elizabeth
Abstract:: This report summarizes physical and biological conditions in the California Current System (CCS), from Oregon to Baja California, in 2001 and 2002. The principal sources of the observations described here are the CalCOFI (California Cooperative Oceanic Fisheries Investigations), IMECOCAL (Investigaciones Mexicanas de la Corriente de California), and U.S. GLOBECLTOP (Global...
Resource Type:: Article
Full Text:: WILLIAM T. PETERSON Integrative Oceanography Division Integrative Oceanography Division National Marine

State of the California Current 2010-2011: Regionally Variable Responses to a Strong (But Fleeting?) La Nina

Creator:: Bjorkstedt, Eric P., Goericke, Ralf, McClatchie, Sam, Weber, Ed, Watson, William, Lo, Nancy, Peterson, Bill, Emmett, Bob, Brodeur, Ric, Peterson, Jay, Litz, Marisa, Gomez-Valdez, Jose, Gaxiola-Castro, Gilberto, Lavaniegos, Bertha, Chavez, Francisco, Collins, Curtis A., Field, John, Sakuma, Keith, Warzybok, Pete, Bradley, Russell, Jahncke, Jaime, Bograd, Steven, Schwing, Franklin, Campbell, Gregory S., Hildebrand, John, Sydeman, William, Thompson, Sarah Ann, Largier, John L., Halle, Chris, Kim, Sung Yong, and Abell, Jeffrey
Abstract:: The state of the California Current system (CCS) since spring 2010 has evolved in response to the development of cooler La Nina following the dissipation of the relatively weak and short-lived El Nino event of 2009-2010. The 2009-2010 El Nino appears to have dissipated quite rapidly in early spring 2010,...
Resource Type:: Article
Full Text:: 9500 Gilman drive la jolla, cA 92093-0205 WilliAm j. sydEmAN, sArAH ANN tHomPsoN Farallon

State of the California Current 2013-14: El Niño Looming

Creator:: Leising, Andrew W., Schroeder, Isaac D., Bograd, Steven J., Bjorkstedt, Eric P., Field, John, Sakuma, Keith, Abell, Jeffrey, Robertson, Roxanne, Tyburczy, Joe, Peterson, William T., Brodeur, Ric, Barcelo, Caren, Auth, Toby D., Daly, Elizabeth A., Campbell, Gregory S., Hildebrand, John A., Suryan, Robert M., Gladics, Amanda J., Horton, Cheryl A., Kahru, M, Manzano-Sarabia, M., McClatchie, S., Weber, Edward D., Watson, William, Santora, Jarrod A., Sydeman, William J., Melin, Sharon R., Delong, Robert L., Largier, John, Kim, Sung Yong, Chavez, Francisco P., Golightly, Richard T., Schneider, Stephanie R., Warzybok, Pete, Bradley, Russel, Jahncke, Jaime, Fisher, Jennifer, and Peterson, Jay
Abstract:: In 2013, the California current was dominated by strong coastal upwelling and high productivity. Indices of total cumulative upwelling for particular coastal locations reached some of the highest values on record. Chlorophyll a levels were high throughout spring and summer. Catches of upwelling-related fish species were also high. After a...
Resource Type:: Article
Full Text:: . ROBERTSON CIMEC, Humboldt State University JOE TYBURCZY California Sea Grant Eureka, CA WILLIAM T

ScholarsArchive@OSU

New approach for using remotely sensed chlorophyll a to identify seabird hotspots

Winter dispersal and activity patterns of post-breeding black-legged kittiwakes Rissa tridactyla from Prince William Sound, Alaska

Linking predators to seasonality of upwelling: Using food web indicators and path analysis to infer trophic connections

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

Climate Change Impacts on Marine Ecosystems

The state of California current, 2000 – 2001 : a third straight La Niña year

The state of California, 2003 - 2004 : still cool?

The state of California current, 2001 – 2002 : will the Californa current system keep its cool, or is El Niño coming?

State of the California Current 2010-2011: Regionally Variable Responses to a Strong (But Fleeting?) La Nina

State of the California Current 2013-14: El Niño Looming

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