Index Catalog // ScholarsArchive@OSU

Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini

Creator:: Dayton, Paul K., Kim, Stacy, Jarrell, Shannon C., Oliver, John S., Hammerstrom, Kamille, Fisher, Jennifer L., O'Connor, Kevin, Barber, Julie S., Robilliard, Gordon, Barry, James, Thurber, Andrew R., and Conlan, Kathy
Abstract:: Polar ecosystems are sensitive to climate forcing, and we often lack baselines to evaluate changes. Here we report a nearly 50-year study in which a sudden shift in the population dynamics of an ecologically important, structure-forming hexactinellid sponge, Anoxycalyx joubini was observed. This is the largest Antarctic sponge, with individuals...
Resource Type:: Article
Full Text:: Antarctic Hexactinellid Sponge, Anoxycalyx joubini Paul K. Dayton1*, Stacy Kim2, Shannon C. Jarrell1, John S

Ghana Artisanal Marine Sector Case Study Results: Ghana Fisheries and Seafood Bio-economic Assessment Model Project

Creator:: SylDon Inc.
Abstract:: This report was prepared under guidance from Gilbert Sylvia, Ph.D. Dr. Sylvia is president of SylDon Inc. located in Newport, Oregon and also Superintendent of the Coastal Oregon Marine Experiment Station, Oregon State University. Shannon Davis (President of The Research Group, Corvallis, Oregon) assisted Dr. Sylvia. The project was sponsored...
Resource Type:: Technical Report
Full Text:: also Superintendent of the Coastal Oregon Marine Experiment Station, Oregon State University. Shannon

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 T. Peterson d, Steven J. Bograd e a Farallon Institute for Advanced Ecosystem Research, P.O. Box

Prey dominance shapes trophic structure of the northern California Current pelagic food web: evidence from stable isotopes and diet analysis

Creator:: Miller, Todd W., Brodeur, Richard D., Rau, Greg, and Omori, Koji
Abstract:: Eastern boundary current (EBC) upwelling zones are among the most productive of marine ecosystems globally and have been generalized in terms of their food web structure. Little empirically based evidence exists to suggest that there is any one form of trophic control of EBC systems and, because of logistical constraints,...
Resource Type:: Article
Full Text:: in terms of bottom-up (Cury & Shannon 2004, Ware & Thomson 2005) and ‘wasp-waist’ or sideways (Cury

Distribution and community structure of ichthyoplankton off the coast of Oregon, USA, in 2000 and 2002

Creator:: Auth, Toby D. and Brodeur, Richard D.
Abstract:: The species composition, distribution and concentration of ichthyoplankton off the central Oregon coast in the NE Pacific Ocean were examined during 2000 and 2002 to investigate annual, seasonal, vertical, and cross-shelf variability. Larval concentrations were also analyzed in relation to water temperature and salinity. The 281 samples collected from 5...
Resource Type:: Article
Full Text:: annual, seasonal, coastal/offshore and depth-stratified scales. The Shannon-Wiener diversity index (H

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:: , USA a r t i c l e i n f o Article history: Available online 23 February 2012 0079-6611/$ - see front

Seasonal food web models for the Oregon inner-shelf ecosystem : investigating the role of large jellyfish

Creator:: Ruzicka, James J., Brodeur, Richard D., and Wainwright, Thomas C.
Abstract:: Previously published in California Cooperative Oceanic Fisheries Investigations Progress Report, 2007, Vol.48; access courtesy of publisher and authors.
Resource Type:: Research Paper
Full Text:: , R. D., C. L. Suchman, D. C. Reese, T. W. Miller, and E. A. Daly. Submitted-a. Spatial overlap and

Two Cell Lines from White Sturgeon

Creator:: Hedrick, Ronald P., McDowell, Terry S., Rosemark, Renee, Aronstein, Diane, and Lannan, Catharine N.
Abstract:: Cell lines were established from spleen and heart tissues of a juvenile white sturgeon Acipenser transmontanus and designated WSS-2 and WSH-1, respectively. Isoenzyme analyses of both lines confirmed their host of origin. Both lines were hypotetraploid and possessed micro- and macrochromosomes. The modal chromosome number for the WSS-2 line was...
Resource Type:: Article
Full Text:: , M. L. Kent, and T. McDowell. 1985, Adeno-like virus associated with a disease of cultured white

Analysis of the Spring-Fall Epipelagic Ichthyoplankton Community in the Northern California Current in 2004-2009 and its Relation to Environmental Factors

Creator:: Auth, Toby D.
Abstract:: The taxonomic composition, distribution, concentration, and community structure of ichthyoplankton off the Oregon and Washington coasts were examined in 2004-2009 to investigate annual, seasonal, latitudinal, and cross-shelf variability. Larval concentrations and community structure were also analyzed in relation to several local and larger-scale environmental variables. The dominant taxa, comprising 94%...
Resource Type:: Article
Full Text:: km) (fig. 1) based on the results of the MDS and cluster analyses. The Shannon-Wiener diversity

A New Record of Planktic Foraminifera Community Response to Marine Heatwaves in the Northeast Pacific

Creator:: M. Kelsey Lane
Abstract:: Marine heat waves are forecasted to increase in frequency and intensity under future climate scenarios, but little is known about the impact of these events on the one of the most commonly used proxies of ocean temperature - foraminiferal assemblages. This research explores the planktic foraminifera community along the Newport...
Resource Type:: Masters Thesis
Full Text:: asymbiotic foraminifera (N. pachyderma, G. bulloides and T. quinqueloba). Symbiotic foraminifera (O

ScholarsArchive@OSU

Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini

Ghana Artisanal Marine Sector Case Study Results: Ghana Fisheries and Seafood Bio-economic Assessment Model Project

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

Prey dominance shapes trophic structure of the northern California Current pelagic food web: evidence from stable isotopes and diet analysis

Distribution and community structure of ichthyoplankton off the coast of Oregon, USA, in 2000 and 2002

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

Seasonal food web models for the Oregon inner-shelf ecosystem : investigating the role of large jellyfish

Two Cell Lines from White Sturgeon

Analysis of the Spring-Fall Epipelagic Ichthyoplankton Community in the Northern California Current in 2004-2009 and its Relation to Environmental Factors

A New Record of Planktic Foraminifera Community Response to Marine Heatwaves in the Northeast Pacific

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