Index Catalog // ScholarsArchive@OSU

Horizontal and vertical distribution of juvenile pollock (Theragra chalcogramma) in the southeastern Bering Sea

Creator:: McIntosh, Neal E.
Abstract:: Juvenile walleye pollock (Theragra chalcogramma) are one of the primary prey items for bird and mammal predators in the Bering Sea and support a large commercial fishery. An understanding of the environmental factors that determine the horizontal and vertical distribution of juvenile pollock is needed to estimate the effects that...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Kelly J. Benoit‐Bird Juvenile walleye pollock (Theragra chalcogramma) are one of the

Detection, classification and ecology of acoustic scattering layers

Creator:: Cade, David Edmund
Abstract:: Acoustic scattering layers of biological origin have been observed for nearly 70 years across the world’s oceans. The organisms that comprise these layers are known to be important features in most oceanic ecosystems, providing a vital trophic link between small phytoplankton grazers and larger species. There are many aspects of...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________ Kelly J. Benoit-Bird Acoustic scattering layers of biological origin have been observed

Bio-physical interactions of small pelagic fish schools and zooplankton prey in the California Current System over multiple scales

Creator:: Kaltenberg, Amanda May
Abstract:: Small pelagic fish represent a critical trophic link between plankton and large predators in marine upwelling ecosystems such as the California Current System. Populations of these fish are highly variable over time and are characterized by extreme fluctuations in abundance, which have significant ecosystem impacts. The causes driving this instability...
Resource Type:: Dissertation
Full Text:: : ____________________________________________________ Kelly Benoit-Bird Small pelagic fish represent a critical trophic link between

Light and the behavior of pelagic animals during night and crepuscular periods

Creator:: Wisdom, Daniel W.
Abstract:: Light plays an important role in ecological processes in the ocean both day and night. While relatively inexpensive, off the shelf instruments are available to measure Photosynthetically Active Radiation or PAR during the day, efforts to quantify light levels at night have proven more difficult. The goal of this work...
Resource Type:: Research Paper
Full Text:: column productivity observed during previous experiments (Benoit-Bird, unpublished data) and was

The effects of scattering-layer composition, animal size, and numerical density on the frequency response of volume backscatter

Creator:: Benoit-Bird, Kelly J.
Abstract:: Land-associated, sound-scattering layers of mesopelagic micronekton surround the Hawaiian Islands. These animals undergo diel migrations during which they split into multiple, distinct layers that have differences in animal density, taxonomic composition, and size. A video-camera system capable of quantitatively estimating the biological constituency of the layers was combined with a...
Resource Type:: Article
Full Text:: size, and numerical density on the frequency response of volume backscatter Kelly J. Benoit-Bird

Transport of the copepod, Calanus finmarchicus, in the northwest Atlantic during diapause

Creator:: Kowalke, Gregory L.
Abstract:: The copepod Calanus finmarchicus is the most important and biomass dominant mesozooplankter in the temperate-boreal North Atlantic. C. finmarchicus has an overwintering phase, termed diapause, during which it descends to great depths (300-2000m) and is metabolically quiescent for up to ten months. Changes in the currents at depth due to...
Resource Type:: Masters Thesis
Full Text:: . I‘d also like to thank my committee, Dr. Kelly Benoit-Bird and Dr. Yvette Spitz, for their support

Foraging behavior of the Pacific harbor seal (Phoca vitulina richardii) in the Pacific Northwest and potential impacts of coastal hypoxia on foraging efficiency

Creator:: Steingass, Sheanna M.
Abstract:: In the last decade, the California Current Large Marine Ecosystem has experienced a trend of increased severity of upwelling-driven coastal hypoxia. This thesis strove to examine the potential upper trophic level impacts of moderate and severe hypoxia in the CCLME. Initially I conducted a literature review of Pacific harbor seal...
Resource Type:: Masters Thesis
Full Text:: Reese and Kelly Benoit-Bird for their input, direction and coffee-fueled discussions along the way

Humpback whales (Megaptera novaeangliae) in the South Pacific breeding grounds : an allocation from feeding areas and an abundance estimate of whales specific to French Polynesia waters

Creator:: Gibb, Giselle Renee
Abstract:: South Pacific humpback whales were devastated by commercial whaling in their Antarctic feeding areas during the 20th century. Understanding migratory connections and current abundance of these isolated breeding stocks is crucial for the allocation of historical Antarctic catches in population dynamic models used to assess current recovery. However, only a...
Resource Type:: Masters Thesis
Full Text:: appreciate the help of my committee, Michael Banks and Kelly Benoit-Bird, and thank them for their guidance

Variation in the energy density of forage fishes and invertebrates from the southeastern Bering Sea

Creator:: Whitman, Luke D.
Abstract:: The quality and availability of forage fishes and invertebrates can affect the behavior and productivity of predators that rely on these resources. This study measures the proximate composition of forage fishes and invertebrates from the southeastern Bering Sea to estimate prey energy density (quality) using a method that is ecologically...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS First, I thank my graduate committee; Scott Heppell, Kelly Benoit‐Bird, and Daniel Roby

The Costa Rica Dome : a study of physics, zooplankton and blue whales

Creator:: Matteson, Robyn S.
Abstract:: At the Costa Rica Dome (CRD), upwelling associated with cyclonic circulation and the presence of a shallow thermocline support a highly productive biological habitat, exploited by marine fauna at several trophic levels. During January 2008, a cruise to the CRD by the R/V Pacific Storm was conducted to relocate blue...
Resource Type:: Masters Thesis
Full Text:: the members of my thesis committee: Bruce R. Mate, Kelly J. Benoit-Bird, Timothy Cowles and Staci

ScholarsArchive@OSU

Horizontal and vertical distribution of juvenile pollock (Theragra chalcogramma) in the southeastern Bering Sea

Detection, classification and ecology of acoustic scattering layers

Bio-physical interactions of small pelagic fish schools and zooplankton prey in the California Current System over multiple scales

Light and the behavior of pelagic animals during night and crepuscular periods

The effects of scattering-layer composition, animal size, and numerical density on the frequency response of volume backscatter

Transport of the copepod, Calanus finmarchicus, in the northwest Atlantic during diapause

Foraging behavior of the Pacific harbor seal (Phoca vitulina richardii) in the Pacific Northwest and potential impacts of coastal hypoxia on foraging efficiency

Humpback whales (Megaptera novaeangliae) in the South Pacific breeding grounds : an allocation from feeding areas and an abundance estimate of whales specific to French Polynesia waters

Variation in the energy density of forage fishes and invertebrates from the southeastern Bering Sea

The Costa Rica Dome : a study of physics, zooplankton and blue whales

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