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Sydeman, William J.
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- Creator:
- Sydeman, William J., Thompson, Sarah Ann, Anker-Nilssen, Tycho, Arimitsu, Mayumi, Bennison, Ashley, Bertrand, Sophie, Boersch-Supan, Philipp, Boyd, Charlotte, Bransome, Nicole C., Crawford, Robert J. M., Daunt, Francis, Furness, Robert W., Gianuca, Dimas, Gladics, Amanda J., Koehn, Laura, Lang, Jennifer W., Logerwell, Elizabeth, Morris, Taryn L., Phillips, Elizabeth M., Provencher, Jennifer, Punt, André E., Saraux, Claire, Shannon, Lynne, Sherley, Richard B., Simeone, Alejandro, Wanless, Ross M., Wanless, Sarah, and Zador, Stephani
- Abstract:
- Worldwide, in recent years capture fisheries targeting lower-trophic level forage fish and euphausiid crustaceans have been substantial (∼20 million metric tons [MT] annually). Landings of forage species are projected to increase in the future, and this harvest may affect marine ecosystems and predator-prey interactions by removal or redistribution of biomass...
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- Creator:
- Leising, Andrew W., Schroeder, Isaac D., Bograd, Steven J., Abell, Jeffrey, Durazo, Reginaldo, Gaxiola-Castro, Gilberto, Bjorkstedt, Eric P., Field, John, Sakuma, Keith, Robertson, Roxanne R., Goericke, Ralf, Peterson, William T., Brodeur, Ric, Barceló, Caren, Auth, Toby D., Daly, Elizabeth A., Suryan, Robert M., Gladics, Amanda J., Porquez, Jessica M., McClatchie, Sam, Weber, Edward D., Watson, William, Santora, Jarrod A., Sydeman, William J., Melin, Sharon R., Chavez, Francisco P., Golightly, Richard T., Schneider, Stephanie R., Fisher, Jennifer, Morgan, Cheryl, Bradley, Russell, and Warybok, Peter
- Abstract:
- In 2014, the California Current (~28˚–48˚N) saw average, or below average, coastal upwelling and relatively low productivity in most locations, except from 38˚–43˚N during June and July. Chlorophyll-a levels were low throughout spring and summer at most locations, except in a small region around 39˚N. Catches of juvenile rockfish (an...
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- 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...
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- Article
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- Creator:
- Wells, Brian K., Schroeder, Isaac D., Santora, Jarrod A., Hazen, Elliott L., Bograd, Steven J., Bjorkstedt, Eric P., Loeb, Valerie J., Mcclatchie, Sam, Weber, Edward D., Watson, William, Thompson, Andrew R., Peterson, William T., Brodeur, Richard D., Harding, Jeff, Field, John, Sakuma, Keith, Hayes, Sean, Mantua, Nathan, Sydeman, William J., Losekoot, Marcel, Thompson, Sarah Ann, Largier, John, Kim, Sung Yong, Chavez, Francisco P., Barceló, Caren, Warzybok, Pete, Bradley, Russel, Jahncke, Jaime, Goericke, Ralf, Campbell, Gregory S., Hildebrand, John A., Melin, Sharon R., Delong, Robert L., Gomez-Valdes, Jose, Lavaniegos, Bertha, Gaxiola-Castro, Gilberto, Golightly, Richard T., Schneider, Stephanie R., Lo, Nancy, Suryan, Robert M., Gladics, Amanda J., Horton, Cheryl A., Fisher, Jennifer, Morgan, Cheryl, Peterson, Jay, Daly, Elizabeth A., Auth, Toby D., and Abell, Jeffrey
- Abstract:
- This report reviews the state of the California Current System (CCS) between winter 2012 and spring 2013, and includes observations from Washington State to Baja California. During 2012, large-scale climate modes indicated the CCS remained in a cool, productive phase present since 2007. The upwelling season was delayed north of...
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- Article
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- Creator:
- Hunsicker, Mary E., Ciannelli, Lorenzo, Bailey, Kevin Mclean, Buckel, Jeffrey A., White, J. Wilson, Link, Jason S., Essington, Timothy E., Gaichas, Sarah, Anderson, Todd W., Brodeur, Richard D., Chan, Kung-Sik, Chen, Kun, Englund, Goran, Frank, Kenneth T., Freitas, Vania, Hixon, Mark A., Hurst, Thomas, Johnson, Darren W., Kitchell, James F., Reese, Doug, Rose, George A., Sjodin, Henrik, Sydeman, William J., van der Veer, Henk W., Vollset, Knut, and Zador, Stephani
- Abstract:
- Predatorprey interactions are a primary structuring force vital to the resilience of marine communities and sustainability of the worlds oceans. Human influences on marine ecosystems mediate changes in species interactions. This generality is evinced by the cascading effects of overharvesting top predators on the structure and function of marine ecosystems....
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- Article
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- 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...
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- Article
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- 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...
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- Article
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- 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...
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- Article