Index Catalog // ScholarsArchive@OSU

Biogeochemical characterization of suspended particulate matter in the Columbia River estuary

Creator:: Prahl, Fredrick, Small, L. F., and Eversmeyer, B.
Abstract:: In order to understand what controls the composition of suspended particulate material (SPM) in estuarine turbidity maxima (ETM), a set of SPM samples collected in the Columbia River and estuary (northwestern USA) during 3 seasons (fall 1990, summer 1991, spring 1992) was analyzed for detrital mineral (Min), total organic matter...
Resource Type:: Article
Full Text:: estuary F. G . Prahl*, L. F. Small, B. Eversmeyer College of Oceanic and Atmospheric Sciences, Oregon

Effect of light on juvenile walleye pollock shoaling and their interaction with predators

Creator:: Ryer, Clifford H. and Olla, Bori L.
Abstract:: Research was undertaken to examine the influence of light intensity on the shoaling behavior, activity and anti-predator behavior of juvenile walleye pollock Theragra chalcogramma. Under a 12 h light/12 h dark photoperiod, juveniles displayed a diurnal shoaling and activity pattern, characterized by fish swimming in cohesive groups during the day,...
Resource Type:: Article
Full Text:: Ecol Prog Ser l Published June 18 Effect of light on juvenile walleye pollock shoaling and their

Light-induced changes in the prey consumption and behavior of two juvenile planktivorous fish

Creator:: Ryer, Clifford H. and Bori L., Olla
Abstract:: Walleye pollock and sablefish, as 0+ yr juveniles, are pelagic particulate feeding planktivores. We conducted a series of laboratory experiments to determine how illumination influences prey consumption in these species, utilizing live Artemia sp. as prey. Both juvenile walleye pollock and sablefish were characterized by a sigmoidal relationship between the...
Resource Type:: Article
Full Text:: juvenile planktivorous fish Clifford H. Ryer*, Bori L. Olla Fisheries Behavioral Ecology Group, Alaska

Growth and behavioral responses to elevated temperatures by juvenile sablefish Anoplopoma fimbria and the interactive role of food availability

Creator:: Sogard, Susan M. and Olla, Bori L.
Abstract:: Larval and age-0 sablefish Anoplopoma fimbria reside in neustonic waters of the North Pacific during spring and summer. We estimated the potential impacts of elevated surface temperatures on ecological processes of growth, conversion efficiency, and behavior in early juvenile sablefish. Growth experiments tested a wide range of temperatures from 6...
Resource Type:: Article
Full Text:: . Sogard*, Bori L. Olla Alaska Fisheries Science Center, National Marine Fisheries Service, Hatfield

Settlement patterns of young-of-the-year rockfish among six Oregon estuaries experiencing different levels of human development

Creator:: Dauble, Alison D., Heppell, Scott A., and Johansson, Mattias L.
Abstract:: In the US Pacific Northwest, rockfishes Sebastes spp. have recently become a focus for increased management efforts; several species are currently managed under extreme conservation measures due to low population levels and intense fishing pressure. Rockfish recruitment is extremely variable, and a better understanding of the factors influencing recruitment and...
Resource Type:: Article
Full Text:: development Alison D. Dauble1,3,*, Scott A. Heppell1, Mattias L. Johansson2,4 1Oregon State University

Evidence for selective mortality in marine environments: the role of fish migration size, timing, and production type

Creator:: Claiborne, Andrew M., Miller, Jessica A., Weitkamp, Laurie A., Teel, David J., and Emmett, Robert L.
Abstract:: The underlying causes of mortality during critical life stages of fish are not well understood, nor is it clear if these causes are similar for naturally versus artificially propagated (i.e. hatchery) individuals. To assess the importance of selective mortality related to production type (hatchery vs. naturally produced) and size at...
Resource Type:: Article
Full Text:: production type Andrew M. Claiborne1,*, Jessica A. Miller2, Laurie A. Weitkamp3, David J. Teel4, Robert L

Geographically and environmentally driven spawning distributions of tuna species in the western Mediterranean Sea

Creator:: Reglero, Patricia, Ciannelli, Lorenzo, Alvarez-Berastegui, D., Balbin, R., Lopez-Jurado, J. L., and Alemany, F.
Abstract:: The spawning habitats of many large marine pelagic predators are poorly known. This lack of knowledge hampers conservation efforts that are aimed at identifying critical habitats for the spawning of these species. We hypothesized that phylogenetically related species show different adaptations and respond differently to environmental and geographical cues for...
Resource Type:: Article
Full Text:: distributions of tuna species in the western Mediterranean Sea P. Reglero1,*, L. Ciannelli2, D. Alvarez

Factors driving Adélie penguin chick size, mass and condition at colonies of different sizes in the Southern Ross Sea

Creator:: Whitehead, Amy L., Lyver, Phil O'B., Ballard, Grant, Barton, Kerry, Karl, Brian J., Dugger, Katie M., Jennings, Scott, Lescroël, Amelie, Wilson, Peter R., and Ainley, David G.
Abstract:: Body size, mass and condition can affect an organism’s ability to cope with variation in resource availability or metabolic demand, particularly as juveniles reach independence. It follows that changes to parental provisioning efficiency (size and frequency of meals) through intraspecific competition or environmental conditions that affect prey availability may affect...
Resource Type:: Article
Full Text:: Amy L. Whitehead1,8, Phil O’B. Lyver1, Grant Ballard2, Kerry Barton3, Brian J. Karl1, Katie M

Contrasting effects of hypoxic conditions on survivorship of planktonic larvae of rocky intertidal invertebrates

Creator:: Eerkes-Medrano, Dafne, Menge, Bruce A., Sislak, Christine, and Langdon, Christopher J.
Abstract:: Hypoxia is increasing in coastal zones worldwide, with acute effects on demersal fish and benthic invertebrate communities in shallow coastal and estuarine habitats. Less studied are the effects of hypoxia on planktonic larvae of open coastal habitats. Climate change projections suggest intensified hypoxia in open coast upwelling systems, such as...
Resource Type:: Article
Full Text:: a recent rise of seasonally persistent inner-shelf hypoxia (dissolved oxygen [DO] < 1.43 ml l−1) and

Parasite communities indicate effects of cross-shelf distributions, but not mesoscale oceanographic features on northern California Current mid-trophic food web

Creator:: Jacobson, Kym C., Baldwin, Rebecca E. B., and Reese, Douglas C.
Abstract:: Mesoscale physical oceanographic features, such as jets and eddies, can influence the structure of marine ecosystems. We used trophically transmitted parasite communities of pelagic fishes in the northern California Current to examine effects of physical oceanographic features on pelagic ecosystem structure. We tested the hypotheses that (1) oceanographic features associated...
Resource Type:: Article
Full Text:: parasite communities acquired through trophic interactions. The transmission of trophically transmit- ted

ScholarsArchive@OSU

Biogeochemical characterization of suspended particulate matter in the Columbia River estuary

Effect of light on juvenile walleye pollock shoaling and their interaction with predators

Light-induced changes in the prey consumption and behavior of two juvenile planktivorous fish

Growth and behavioral responses to elevated temperatures by juvenile sablefish Anoplopoma fimbria and the interactive role of food availability

Settlement patterns of young-of-the-year rockfish among six Oregon estuaries experiencing different levels of human development

Evidence for selective mortality in marine environments: the role of fish migration size, timing, and production type

Geographically and environmentally driven spawning distributions of tuna species in the western Mediterranean Sea

Factors driving Adélie penguin chick size, mass and condition at colonies of different sizes in the Southern Ross Sea

Contrasting effects of hypoxic conditions on survivorship of planktonic larvae of rocky intertidal invertebrates

Parasite communities indicate effects of cross-shelf distributions, but not mesoscale oceanographic features on northern California Current mid-trophic food web

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