Index Catalog // ScholarsArchive@OSU

Experiments with Seasonal Forecasts of ocean conditions for the Northern region of the California Current upwelling system

Creator:: Siedlecki, Samantha A., Kaplan, Isaac C., Hermann, Albert J., Nguyen, Thanh Tam, Bond, Nicholas A., Newton, Jan A., Williams, Gregory D., Peterson, William T., Alin, Simone R., and Feely, Richard A.
Abstract:: Resource managers at the state, federal, and tribal levels make decisions on a weekly to quarterly basis, and fishers operate on a similar timeframe. To determine the potential of a support tool for these efforts, a seasonal forecast system is experimented with here. JISAO’s Seasonal Coastal Ocean Prediction of the...
Resource Type:: Article

State of the California Current 2014-15: Impacts of the Warm-Water "Blob"

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...
Resource Type:: Article

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

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

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

Biological and physical ocean indicators predict the success of an invasive crab, Carcinus maenas, in the northern California Current

Creator:: Yamada, Sylvia Behrens, Peterson, William T., and Kosro, P. Michael
Abstract:: An introduced population of European green crabs Carcinus maenas was established in San Francisco Bay (California, USA) prior to 1989. Subsequently, their larvae were likely carried northward into the embayments of Oregon, Washington (USA), and British Columbia (Canada) by the unusually strong Davidson Current during the winter of the El...
Resource Type:: Article

Environmental drivers and reproductive consequences of variation in the diet of a marine predator

Creator:: Gladics, Amanda J., Suryan, Robert M., Parrish, Julia K., Horton, Cheryl A., Daly, Elizabeth A., and Peterson, William T.
Abstract:: Ocean conditions can greatly impact lower trophic level prey assemblages in marine ecosystems, with effects of ocean state propagating to higher trophic levels. In many regions throughout their range, common murre (Uria aalge) exhibit narrow dietary breadth in feeding chicks and therefore are vulnerable to recruitment failures of dominant prey...
Resource Type:: Article

Applied Fisheries Oceanography: Ecosystem Indicators of Ocean Conditions Inform Fisheries Management in the California Current

Creator:: Peterson, William T., Fisher, Jennifer L., Peterson, Jay O., Morgan, Cheryl A., Burke, Brian J., and Fresh, Kurt L.
Abstract:: Fisheries oceanography is the study of ecological relationships between fishes and the dynamics of their marine environments and aims to characterize the physical, chemical, and biological factors that affect the recruitment and abundance of harvested species. A recent push within the fisheries management community is toward ecosystem-based management. Here, we...
Resource Type:: Article

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

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

Experiments with Seasonal Forecasts of ocean conditions for the Northern region of the California Current upwelling system

State of the California Current 2014-15: Impacts of the Warm-Water "Blob"

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

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

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

Biological and physical ocean indicators predict the success of an invasive crab, Carcinus maenas, in the northern California Current

Environmental drivers and reproductive consequences of variation in the diet of a marine predator

Applied Fisheries Oceanography: Ecosystem Indicators of Ocean Conditions Inform Fisheries Management in the California Current

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

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

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