Index Catalog // ScholarsArchive@OSU

Phytoplankton balance in the oceanic subarctic Pacific: Grazing impact of Metridia pacifica

Creator:: Batchelder, Harold P.
Abstract:: Ingestion and respiration by Metridia pacifica, the dominant large copepod during autumn and winter in the subarctic Pacific, were investigated by shipboard and laboratory experiments. Diel variation in the rate of grazing on phytoplankton by M. pacifica was determined from measurements of gut pigment content and gastric evacuation rate. Both...
Resource Type:: Article
Full Text:: : grazing impact of Metridia pacifica Harold P. Batchelder* College of Oceanography, Oregon State

Forward-in-Time-/Backward-in-Time-Trajectory (FITT/BITT) Modeling of Particles and Organisms in the Coastal Ocean

Creator:: Batchelder, Harold P.
Abstract:: Lagrangian particle-tracking models (LPTMs) were used to identify sources, destinations, and transport pathways of particles (plankton). The LPTM simulations were forced using stored fields from the Spectral Element Ocean Model simulation for a coastal upwelling system having idealized geometry, bathymetry, and simple wind forcing. Forward-in-time-trajectory (FITT) simulations are common in...
Resource Type:: Article
Full Text:: of Particles and Organisms in the Coastal Ocean* HAROLD P. BATCHELDER Oregon State University

Late spring and summer patterns of euphausiid reproduction in Southeast Alaska fjord waters

Creator:: Szabo, Andrew R. and Batchelder, Harold P.
Abstract:: Abundance, size and development stage data for furcilia and juvenile euphausiids and data on timing and prevalence of attached spermatophores on adult females are used to infer spawning times by four euphausiid species in Frederick Sound and lower Stephens Passage, Southeast Alaska. Results from net tows conducted between late May...
Resource Type:: Article
Full Text:: , Seattle, WA, 4 98105 5 Harold P. Batchelder, College of Earth, Ocean and Atmospheric Sciences, Oregon

Staging egg development of marine copepods with DAPI and PicoGreen®

Creator:: Zirbel, Marnie Jo, Miller, Charles B., and Batchelder, Harold P.
Abstract:: Calanoid copepod eggs have a robust, chitinous outer chorion, which makes field‐collected, formaldehydefixed eggs difficult to penetrate with stains or molecular probes. Egg development studies in copepods have involved physical, chemical, and enzymatic treatments to remove the chorion. We present an efficient, one‐step method for staining copepod eggs with the...
Resource Type:: Article
Full Text:: Marnie Jo Zirbel, Charles B. Miller, and Harold P. Batchelder

Mayorga-AdameCharacterizingCirculationKenyanSupportingInfo.pdf

Creator:: Mayorga-Adame, C. Gabriela, Strub, P. Ted, Batchelder, Harold P., and Spitz, Yvette H.
Abstract:: The Kenyan-Tanzanian coastal region in the western Indian Ocean faces several environmental challenges including coral reef conservation, fisheries management, coastal erosion, and nearshore pollution. The region lacks hydrodynamic records and oceanographic studies at adequate spatial and temporal scales to provide information relevant to the local environmental issues. We have developed...
Full Text:: -Tanzanian coast using an ocean model C. Gabriela Mayorga-Adame1, P. Ted Strub1, Harold P. Batchelder1

Mayorga-AdameCharacterizingCirculationKenyan.pdf

Creator:: Mayorga-Adame, C. Gabriela, Strub, P. Ted, Batchelder, Harold P., and Spitz, Yvette H.
Abstract:: The Kenyan-Tanzanian coastal region in the western Indian Ocean faces several environmental challenges including coral reef conservation, fisheries management, coastal erosion, and nearshore pollution. The region lacks hydrodynamic records and oceanographic studies at adequate spatial and temporal scales to provide information relevant to the local environmental issues. We have developed...
Full Text:: the Kenyan-Tanzanian coast using an ocean model C. Gabriela Mayorga-Adame1, P. Ted Strub1, Harold P

Characterizing the circulation off the Kenyan-Tanzanian coast using an ocean model

Creator:: Mayorga-Adame, C. Gabriela, Strub, P. Ted, Batchelder, Harold P., and Spitz, Yvette H.
Abstract:: The Kenyan-Tanzanian coastal region in the western Indian Ocean faces several environmental challenges including coral reef conservation, fisheries management, coastal erosion, and nearshore pollution. The region lacks hydrodynamic records and oceanographic studies at adequate spatial and temporal scales to provide information relevant to the local environmental issues. We have developed...
Resource Type:: Article

Advances in Physical, Biological, and Coupled Ocean Models During the US GLOBEC Program

Creator:: Curchitser, Enrique N., Batchelder, Harold P., Haidvogel, Dale B., Fiechter, Jerome, and Runge, Jeffrey
Abstract:: From the planning days preceding the establishment of the US Global Ocean Ecosystem Dynamics (GLOBEC) program, modeling was recognized as one of the program’s pillars. In particular, predictions of future ecosystem states in an evolving climate system required new interdisciplinary approaches that brought together physicists, biologists, modelers, and observational scientists....
Resource Type:: Article
Full Text:: Brunswick, NJ, USA. Harold P. Batchelder is Professor, College of Earth, Ocean, and Atmospheric Sciences

Advances in Marine Ecosystem Dynamics from US GLOBEC: The Horizontal-Advection Bottom-up Forcing Paradigm

Creator:: Di Lorenzo, Emanuele, Mountain, David, Batchelder, Harold P., Bond, Nicholas, and Hofmann, Eileen E.
Abstract:: A primary focus of the US Global Ocean Ecosystem Dynamics (GLOBEC) program was to identify the mechanisms of ecosystem response to large-scale climate forcing under the assumption that bottom-up forcing controls a large fraction of marine ecosystem variability. At the beginning of GLOBEC, the prevailing bottom-up forcing hypothesis was that...
Resource Type:: Article
Full Text:: , Atlanta, GA, USA. David Mountain is an independent oceanographer in Tucson, AZ, USA. Harold P

The impact of increasing temperatures on dormancy duration in Calanus finmarchicus

Creator:: Pierson, James J., Batchelder, Harold, Saumweber, Whitley, Leising, Andrew, and Runge, Jeffrey
Abstract:: Dormancy is a key life history trait of planktonic calanoid copepods in the genus Calanus. Empirical evidence suggests that duration of dormancy is controlled by ambient temperature driving lipid metabolism in individuals. Here, we use the temperature-dependent metabolic rates of overwintering individuals to show that increasing temperatures, associated with global...
Resource Type:: Article
Full Text:: duration in Calanus finmarchicus JAMES J. PIERSON1*, HAROLD BATCHELDER2, WHITLEY SAUMWEBER3, ANDREW

ScholarsArchive@OSU

Phytoplankton balance in the oceanic subarctic Pacific: Grazing impact of Metridia pacifica

Forward-in-Time-/Backward-in-Time-Trajectory (FITT/BITT) Modeling of Particles and Organisms in the Coastal Ocean

Late spring and summer patterns of euphausiid reproduction in Southeast Alaska fjord waters

Staging egg development of marine copepods with DAPI and PicoGreen®

Mayorga-AdameCharacterizingCirculationKenyanSupportingInfo.pdf

Mayorga-AdameCharacterizingCirculationKenyan.pdf

Characterizing the circulation off the Kenyan-Tanzanian coast using an ocean model

Advances in Physical, Biological, and Coupled Ocean Models During the US GLOBEC Program

Advances in Marine Ecosystem Dynamics from US GLOBEC: The Horizontal-Advection Bottom-up Forcing Paradigm

The impact of increasing temperatures on dormancy duration in Calanus finmarchicus

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