Index Catalog // ScholarsArchive@OSU

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:: ITS RELATION TO ENVIRONMENTAL FACTORS TOBY D. AUTH Cooperative Institute for Marine Resources Studies

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:: of Oregon, USA, in 2000 and 2002 Toby D. Auth1,*, Richard D. Brodeur2 1Cooperative Institute for

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
Full Text:: 541 867 0350. E-mail address: tauth@psmfc.org (T.D. Auth). Toby D. Auth a,⇑, Richard D. Brodeur b, Jay

Winter ichthyoplankton biomass as a predictor of early summer prey fields and survival of juvenile salmon in the northern California Current

Creator:: Daly, Elizabeth A., Auth, Toby D., Brodeur, Richard D., and Peterson, William T.
Abstract:: Diets of juvenile coho Oncorhynchus kisutch and Chinook O. tshawytscha salmon are made up primarily of winter-spawning fish taxa in the late-larval and early juvenile stages that are undersampled in plankton and larger trawl nets. Although we have no direct measure of the availability of fish prey important to juvenile...
Resource Type:: Article
Full Text:: northern California Current Elizabeth A. Daly1,*, Toby D. Auth2, Richard D. Brodeur3, William T. Peterson3

Recent pre-recruit Pacific hake (Merluccius productus) occurrences in the Northern California Current suggest a northward expansion of their spawning area

Creator:: Phillips, A. Jason, Ralston, Stephen, Brodeur, Richard D., Auth, Toby D., Emmett, Robert L., Johnson, Carrie, and Wespestad, Vidar G.
Abstract:: Coastal Pacific hake (Merluccius productus) are known to spawn in the southern California Bight from January to March, migrate north during late spring and summer to feed off Oregon, Washington, and British Columbia, and then move back to southern California in the fall. Juvenile Pacific hake nursery areas have been...
Resource Type:: Research Paper
Full Text:: , California 95060 Newport, Oregon 97365 TOBY D. AUTH ROBERT L. EMMETT CARRIE JOHNSON Cooperative Institute

The Impact of Surface Ocean Mixing on Phytoplankton Communities and Associated Carbon Pools

Creator:: VerWey, Brian J.
Abstract:: Deep mixing events in the ocean’s surface layer act as physical drivers of carbon export by detraining dissolved and particulate organic matter, including surface phytoplankton communities, to depth. Once removed from the sunlit surface ocean environment, phytoplankton accumulation rates are dependent on the relative contributions of loss processes, such as...
Resource Type:: Masters Thesis
Full Text:: parts of sailing. To Dr. Toby Westberry, for showing me that it is possible to have a healthy work

Analysis of Culturally Derived Speleothems by INAA and ICP-MS, a Multi-Analytical Approach

Creator:: Nation, Humberto E.
Abstract:: Over the last two decades, archaeologists have documented the widespread ancient Maya practice of collecting cave formations (speleothems) from ritually important caves and transporting them to their settlements. Little is known about their specific uses within settlements, but it is hypothesized that these objects convey a degree of sanctity from...
Resource Type:: Masters Thesis
Full Text:: : ___________________________ Leah D. Minc Over the last two decades, archaeologists have documented the

Trans-Pacific and regional atmospheric transport of anthropogenic semivolatile organic compounds in the western U.S.

Creator:: Primbs, Toby
Abstract:: The atmospheric transport of anthropogenic semivolatile organic compounds (SOCs) from Asian sources to the Western U.S. was investigated. In addition, the SOC extraction method was optimized. Hansen solubility parameter plots were used to aid in the pressurized liquid extraction (PLE) solvent selection of air sampling media in order to minimize...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Toby Primbs for the degree of Doctor of Philosophy in Chemistry presented on September 21

Assessing the Impact of Fishery Bait on Spatiotemporal Variation in the Feeding Ecology of Dungeness Crab (Cancer magister) Using Stable Isotopes, Gut Content Analysis & Fishermen Interviews

Creator:: Harbison, Toby N.
Abstract:: The commercial Dungeness crab (Cancer magister) fishery is Oregon’s largest trap-based fishery. Each year, crab vessels discard millions of pounds of bait, including squid, razor clams, and sardines, into the near-coastal ocean. Although the fishery season typically runs from December 1st through August 14th, most landings occur within the first...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Toby N. Harbison for the degree of Master of Science in Marine Resource

A study of factors influencing the selection of vocational teacher education by undergraduate students at Oregon State University

Creator:: Toby, Tony Udo
Abstract:: The purpose of this study was to ascertain the factors which influenced undergraduate students in the School of Education at Oregon State University to select vocational teacher education as their major. Data were collected from 315 vocational, practical arts, and non-vocational undergraduate teacher education majors who were enrolled in teacher...
Resource Type:: Dissertation
Full Text:: Tony Udo Toby for the degree of Doctor of Education in Vocational Education presented on August 12

ScholarsArchive@OSU

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

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

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

Winter ichthyoplankton biomass as a predictor of early summer prey fields and survival of juvenile salmon in the northern California Current

Recent pre-recruit Pacific hake (Merluccius productus) occurrences in the Northern California Current suggest a northward expansion of their spawning area

The Impact of Surface Ocean Mixing on Phytoplankton Communities and Associated Carbon Pools

Analysis of Culturally Derived Speleothems by INAA and ICP-MS, a Multi-Analytical Approach

Trans-Pacific and regional atmospheric transport of anthropogenic semivolatile organic compounds in the western U.S.

Assessing the Impact of Fishery Bait on Spatiotemporal Variation in the Feeding Ecology of Dungeness Crab (Cancer magister) Using Stable Isotopes, Gut Content Analysis & Fishermen Interviews

A study of factors influencing the selection of vocational teacher education by undergraduate students at Oregon State University

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