Index Catalog // ScholarsArchive@OSU

Marine bird aggregations associated with the tidally-driven plume and plume fronts of the Columbia River

Creator:: Zamon, Jeannette E., Phillips, Elizabeth M., and Guy, Troy J.
Abstract:: Freshwater discharge from large rivers into the coastal ocean creates tidally-driven frontal systems known to enhance mixing, primary production, and secondary production. Many authors suggest that tidal plume fronts increase energy flow to fish-eating predators by attracting planktivorous fishes to feed on plankton aggregated by the fronts. However, few studies...
Resource Type:: Article
Full Text:: Jeannette E. Zamon a,n, Elizabeth M. Phillips b,1, Troy J. Guy b,1 a NOAA Fisheries, Point Adams Research

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
Full Text:: ,⇑, Richard D. Brodeur b, Robert L. Emmett b, John H. Steele c, Jeannette E. Zamon d, Cheryl A. Morgan a

Overlap of North Pacific albatrosses with the U.S. west coastgroundfish and shrimp fisheries

Creator:: Guy, T. J., Jennings, S. L., Suryan, R. M., Melvin, E. F., Bellman, M. A., Ballance, L. T., Blackie, B. A., Croll, D. A., Deguchi, T., Geernaert, T. O., Henry, R. W., Hester, M., Hyrenbach, K. D., Jahncke, J., Kappes, M. A., Ozaki, K., Roletto, J., Sato, F., Sydeman, W. J., and Zamon, J. E.
Abstract:: We used a combination of seabird data (both fishery-dependent and fishery-independent) and fishing-effort data to evaluate the relative fisheries risk of five west coast groundfish fisheries and oneshrimp fishery to black-footed (Phoebastria nigripes), short-tailed (P. albatrus) and Laysan albatrosses(P. immutabilis). To assess risk, an overlap index was derived as the...
Resource Type:: Article
Full Text:: U.S. west coast groundfish and shrimp fisheries O g T B K W a b c A d e f g h i j k l m

Decomposition and nitrogen dynamics of ¹⁵N‑labeled leaf, root, and twig litter in temperate coniferous forests

Creator:: van Huysen, Tiff L., Harmon, Mark E., Perakis, Steven S., and Chen, Hua
Abstract:: Litter nutrient dynamics contribute significantly to biogeochemical cycling in forest ecosystems. We examined how site environment and initial substrate quality influence decomposition and nitrogen (N) dynamics of multiple litter types. A 2.5-year decomposition study was installed in the Oregon Coast Range and West Cascades using ¹⁵N-labeled litter from Acer macrophyllum,...
Resource Type:: Article
Full Text:: temperate coniferous forests Tiff L. van Huysen · Mark E. Harmon · Steven S. Perakis · Hua Chen received

Satellite-based detection and monitoring of phytoplankton blooms along the Oregon coast

Creator:: McKibben, S. M., Strutton, P. G., Foley, D. G., Peterson, T. D., and White, A. E.
Abstract:: We have applied a normalized difference algorithm to 8 day composite chlorophyll-a (CHL) and fluorescence line height (FLH) imagery obtained from the Moderate Resolution Imaging Spectroradiometer aboard the Aqua spacecraft in order to detect and monitor phytoplankton blooms in the Oregon coastal region. The resulting bloom products, termed CHL[subscript rel]...
Resource Type:: Article
Full Text:: Oregon coast S. M. McKibben,1 P. G. Strutton,2 D. G. Foley,3 T. D. Peterson,4 and A. E. White1 Received

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:: et al. (2006) Seabirds NOAA: Recent work of Jeanette E. Zamon, NOAA Oregon/Washington Fish

Fishery-specific solutions to seabird bycatch in the U.S. West Coast sablefish fishery

Creator:: Good, Thomas P., Jannot, Jason E., Melvin, Edward F., Gladics, Amanda J., Suryan, Robert M., and Guy, Troy J.
Abstract:: Bird scaring lines (BSLs) protect longline fishing gear from seabird attacks, save bait, reduce incidental seabird mortality and are the most commonly prescribed seabird bycatch mitigation measure worldwide. We collaborated with fishermen to assess the efficacy of applying BSL regulations from the demersal longline sablefish fishery in Alaska to a...
Resource Type:: Article
Full Text:: . Melvinb, Robert M. Suryana,1, Thomas P. Goodc, Jason E. Jannotd, Troy J. Guyb a Department of Fisheries

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:: ., Watkins-Brandt, K. S., Wood, A. M., Hunter, M., Forster, Z., Hopkins, A., ... & White, A. E. (2015

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:: , Richard D. Brodeur, Frank J. Hernandez, Javier Quiñones, E. Marcelo Acha, Shin-ichi Uye, Hermes Mianzan

Early Life History and Fisheries Oceanography: New Questions in a Changing World

Creator:: Llopiz, Joel K., Cowen, Robert K., Hauff, Martha J., Ji, Rubao, Munday, Philip L., Muhling, Barbara A., Peck, Myron A., Richardson, David E., Sogard, Susan, and Sponaugle, Su
Abstract:: In the past 100 years since the birth of fisheries oceanography, research on the early life history of fishes, particularly the larval stage, has been extensive, and much progress has been made in identifying the mechanisms by which factors such as feeding success, predation, or dispersal can influence larval survival....
Resource Type:: Article
Full Text:: . Muhling, Myron A. Peck, David E. Richardson, Susan Sogard, and Su Sponaugle Oceanography | Vol.27, No

ScholarsArchive@OSU

Marine bird aggregations associated with the tidally-driven plume and plume fronts of the Columbia River

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

Overlap of North Pacific albatrosses with the U.S. west coastgroundfish and shrimp fisheries

Decomposition and nitrogen dynamics of ¹⁵N‑labeled leaf, root, and twig litter in temperate coniferous forests

Satellite-based detection and monitoring of phytoplankton blooms along the Oregon coast

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

Fishery-specific solutions to seabird bycatch in the U.S. West Coast sablefish fishery

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

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

Early Life History and Fisheries Oceanography: New Questions in a Changing World

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