Index Catalog // ScholarsArchive@OSU

Ontogenetic shifts in diets of juvenile and subadult coho and chinook salmon in coastal marine waters: important for marine survival?

Creator:: Daly, Elizabeth A., Brodeur, Richard D., and Weitkamp, Laurie A.
Abstract:: Successfully shifting to a more piscivorous diet may be an important factor in the growth and survival of juvenile coho salmon Oncorhynchus kisutch and Chinook salmon O. tshawytscha during their first summer in the northern California Current. Nonmetric multidimensional scaling and cluster analysis of diets by size showed several distinct...
Resource Type:: Article
Full Text:: –220 209.5 (5.7) 103.7 (13.8) 65.2 21 148 4 173 Small 221–240 228.5 (5.8) 137.9 (15.7) 52.7 6 51 7 64

Diel Feeding Chronology, Gastric Evacuation, and Daily Food Consumption of Juvenile Chinook Salmon in Oregon Coastal Waters

Creator:: Benkwitt, Cassandra E., Brodeur, Richard D., Hurst, Thomas P., and Daly, Elizabeth A.
Abstract:: The diel feeding periodicity of juvenile Chinook salmon Oncorhynchus tshawytscha was determined from stomachs collected in coastal waters off Oregon in 2000 and 2003. Juvenile Chinook salmon exhibited a diurnal feeding pattern with morning and evening feeding periods. There were differences in the duration and magnitude of the dawn and...
Resource Type:: Article
Full Text:: northern California Current. U.S. National Marine Fisheries Service Fishery Bulletin 102:25–46. Brodeur

Interannual variability in the Northern California Current food web structure: Changes in energy flow pathways and the role of forage fish, euphausiids, and jellyfish

Creator:: Ruzicka, James J., Brodeur, Richard D., Emmett, Robert L., Steele, John H., Zamon, Jeannette E., Morgan, Cheryl A., Thomas, Andrew C., and Wainwright, Thomas C.
Abstract:: The Northern California Current (NCC) is a seasonally productive and open ecosystem. It is home to both a diverse endemic community and to seasonally transient species. Productivity and food web structure vary seasonally, interannually, and decadally due to variability in coastal upwelling, climate-scale physical processes, and the migratory species entering...
Resource Type:: Article

Juvenile Steelhead Distribution, Migration, Feeding, and Growth in the Columbia River Estuary, Plume, and Coastal Waters

Creator:: Daly, Elizabeth A., Scheurer, Julie A., Brodeur, Richard D., Weitkamp, Laurie A., Beckman, Brian R., and Miller, Jessica A.
Abstract:: Relative to extensive research on the freshwater stages of steelhead Oncorhynchus mykiss life history, little is known about the species’ estuarine and early marine phases despite the decline of numerous populations, including several from the Columbia River. Comparisons of the distribution, diet, and growth of juvenile steelhead collected during surveys...
Resource Type:: Article
Full Text:: ] at 0 8: 04 2 1 N ov em be r 20 14 64 DALY ET AL. phase of steelhead life history and

Analysis of Energy Flow in US GLOBEC Ecosystems Using End-to-End Models

Creator:: Ruzicka, James J., Steele, John H., Gaichas, Sarah K., Ballerini, Tosca, Gifford, Dian J., Brodeur, Richard D., and Hofmann, Eileen E.
Abstract:: End-to-end models were constructed to examine and compare the trophic structure and energy flow in coastal shelf ecosystems of four US Global Ocean Ecosystem Dynamics (GLOBEC) study regions: the Northern California Current, the Central Gulf of Alaska, Georges Bank, and the Southwestern Antarctic Peninsula. High-quality data collected on system components...
Resource Type:: Article
Full Text:: of inherent unknowns and technical problems. Taken together, they present a Figure 7. Structural

Anomalous ichthyoplankton distributions and concentrations in the northern California Current during the 2010 El Niño and La Niña events

Creator:: Auth, Toby D., Brodeur, Richard D., and Peterson, Jay O.
Abstract:: In late spring of 2010, the northern California Current (NCC) experienced a transition from El Niño to La Niña conditions resulting in anomalous distributions and concentrations within the ichthyoplankton community. We analyzed larval fish data collected during the four months before and after this transition and compared them to data...
Resource Type:: Article

Spatio-temporal associations of albacore CPUEs in the Northeastern Pacific with regional SST and climate environmental variables

Creator:: Phillips, A. Jason, Ciannelli, Lorenzo, Brodeur, Richard D., Pearcy, William G., and Childers, John
Abstract:: This study investigated the spatial distribution of juvenile North Pacific albacore (Thunnus alalunga) in relation to local environmental variability [i.e. sea surface temperature (SST)], and two large-scale indices of climate variability, [the Pacific Decadal Oscillation (PDO) and theMultivariate El Nino/Southern Oscillation Index (MEI)]. Changes in local and climate variables were...
Resource Type:: Article
Full Text:: Bulletin No. 115. 128 pp. Domokos, R., Seki, M. P., Polovina, J. J., and Hawn, D. R. 2007. Oceanographic

Surface distribution of brachyuran megalopae and ichthyoplankton in the Columbia River plume during transition from downwelling to upwelling conditions

Creator:: Roegner, G. Curtis, Daly, Elizabeth A., and Brodeur, Richard D.
Abstract:: In the California Current coastal boundary zone, the spring transition between downwelling and upwelling conditions, along with the fluctuating structure of the Columbia River plume, creates highly dynamic interactions. In this study, we investigated whether the surface distribution of brachyuran larvae and ichthyoplankton would track the dynamics of the Columbia...
Resource Type:: Article
Full Text:: Instrument Corp. UA-002-64). Sunset/sunrise occurred at ∼2000/ 0430 h bracketed by 39 min of civil twilight

Climate shifts the interaction web of a marine plankton community

Creator:: Francis, Tessa B., Scheuerell, Mark D., Brodeur, Richard D., Levin, Phillip S., Ruzicka, James J., Tolimieri, Nick, and Peterson, William T.
Abstract:: Climatic effects in the ocean at the community level are poorly described, yet accurate predictions about ecosystem responses to changing environmental conditions rely on understanding biotic responses in a food-web context to support knowledge about direct biotic responses to the physical environment. Here we conduct time-series analyses with multivariate autoregressive...
Resource Type:: Article
Full Text:: .3 [� 0. 58 , 0] 0. 47 [0 .2 5, 0. 64 ] �0 .2 7 [� 0. 46 , �0 .0 9] G el H e 0. 44 [0 .1 9

Jellyfish, Forage Fish, and the World’s Major Fisheries

Creator:: Robinson, Kelly L., Ruzicka, James J., Decker, Mary Beth, Brodeur, Richard D., Hernandez, Frank J., Quiñones, Javier, Acha, E. Marcelo, Uye, Shin-ichi, Mianzan, Hermes, and Graham, William M.
Abstract:: A majority of the world’s largest net-based fisheries target planktivorous forage fish that serve as a critical trophic link between the plankton and upper-level consumers such as large predatory fishes, seabirds, and marine mammals. Because the plankton production that drives forage fish also drives jellyfish production, these taxa often overlap...
Resource Type:: Article
Full Text:: and consequences. Marine Pollution Bulletin 60:954–963, http://dx.doi.org/10.1016/ j.marpolbul

ScholarsArchive@OSU

Ontogenetic shifts in diets of juvenile and subadult coho and chinook salmon in coastal marine waters: important for marine survival?

Diel Feeding Chronology, Gastric Evacuation, and Daily Food Consumption of Juvenile Chinook Salmon in Oregon Coastal Waters

Interannual variability in the Northern California Current food web structure: Changes in energy flow pathways and the role of forage fish, euphausiids, and jellyfish

Juvenile Steelhead Distribution, Migration, Feeding, and Growth in the Columbia River Estuary, Plume, and Coastal Waters

Analysis of Energy Flow in US GLOBEC Ecosystems Using End-to-End Models

Anomalous ichthyoplankton distributions and concentrations in the northern California Current during the 2010 El Niño and La Niña events

Spatio-temporal associations of albacore CPUEs in the Northeastern Pacific with regional SST and climate environmental variables

Surface distribution of brachyuran megalopae and ichthyoplankton in the Columbia River plume during transition from downwelling to upwelling conditions

Climate shifts the interaction web of a marine plankton community

Jellyfish, Forage Fish, and the World’s Major Fisheries

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