Index Catalog // ScholarsArchive@OSU

Remineralization of phytoplankton-derived organic matter by natural populations of heterotrophic bacteria

Creator:: Burkhardt, Brian G., Watkins-Brandt, Katie S., Defforey, Delphine, Paytan, Adina, and White, Angelicque E.
Abstract:: The relative lability, elemental stoichiometry, and remineralization rates of various particulate organic matter (POM) substrates by natural heterotrophic marine microorganisms was investigated. POM was harvested from laboratory cultures of a marine diazotroph (Trichodesmium IMS101), a cosmopolitan diatom (Thalassiosira weissflogii), a common marine cyanobacteria (Prochlorococcus MED4), and from surface waters off...
Resource Type:: Article
Full Text:: organic matter by natural populations of heterotrophic bacteria Burkhardt, B. G., Watkins-Brandt, K. S

Foraminiferal faunal estimates of paleotemperature: Circumventing the no-analog problem yields cool ice age tropics

Creator:: Mix, Alan C., Morey, Ann E., Pisias, Nicklas G., and Hostetler, Steven W.
Abstract:: The sensitivity of the tropics to climate change, particularly the amplitude of glacial‐to‐interglacial changes in sea surface temperature (SST), is one of the great controversies in paleoclimatology. Here we reassess faunal estimates of ice age SSTs, focusing on the problem of no‐analog planktonic foraminiferal assemblages in the equatorial oceans that...
Resource Type:: Article
Full Text:: problem yields cool ice age tropics Alan C. Mix, Ann E. Morey, and Nicklas G. Pisias College of

Drug Hypersensitivity: How Drugs Stimulate T Cells via Pharmacological Interaction with Immune Receptors

Creator:: Pichler, Werner J., Adam, Jacqueline, Watkins, Stephen, Wuillemin, Natascha, Yun, James, and Yerly, Daniel
Abstract:: Small chemicals like drugs tend to bind to proteins via noncovalent bonds, e.g. hydrogen bonds, salt bridges or electrostatic interactions. Some chemicals interact with other molecules than the actual target ligand, representing so-called ‘off-target' activities of drugs. Such interactions are a main cause of adverse side effects to drugs and...
Resource Type:: Article
Full Text:: Adam a Stephen Watkins c Natascha Wuillemin b James Yun d Daniel Yerly

Nature and Extent of the Deep Biosphere

Creator:: Colwell, Frederick S. and D’Hondt, Steven
Abstract:: In the last three decades we have learned a great deal about microbes in subsurface environments. Once, these habitats were rarely examined, perhaps because so much of the life that we are concerned with exists at the surface and seems to pace its metabolic and evolutionary rhythms with the overt...
Resource Type:: Article
Full Text:: , Oregon 97331-5503, U.S.A. rcolwell@coas.oregonstate.edu Steven D’Hondt Graduate School of Oceanography

Constructing dependency in coping with stressful occupational events : at what cost for wives of professional athletes?

Creator:: Ortiz, Steven M.
Abstract:: In taking a multidimensional approach to selected areas of the much neglected sport marriage, this article identifies and examines the survival strategies used by wives in coping with stressful occupational events in the careers of their husbands. Using a control management perspective, the idea of control work is introduced and...
Resource Type:: Article
Full Text:: cost for wives of professional athletes? Steven M. Ortiz Department of Sociology Oregon State

An Open Ocean Trial of Controlled Upwelling Using Wave Pump Technology

Creator:: White, Angelicque, Bjorkman, Karin, Grabowski, Eric, Letelier, Ricardo, Poulos, Steve, Watkins, Blake, and Karl, David
Abstract:: In 1976, John D. Isaacs proposed to use wave energy to invert the density structure of the ocean and pump deep, nutrient-rich water into the sunlit surface layers. The basic principle is simple: a length of tubing attached to a surface buoy at the top, and a one-way valve at...
Resource Type:: Article
Full Text:: Atmospheric Sciences, Oregon State University, Corvallis, Oregon STEVE POULOS, BLAKE WATKINS, AND DAVID KARL

Addition of inorganic or organic phosphorus enhances nitrogen and carbon fixation in the oligotrophic North Pacific

Creator:: Watkins-Brandt, Katie S., Letelier, Ricardo M., Spitz, Yvette H., Church, Matthew J., Böttjer, Daniela, and White, Angelicque E.
Abstract:: We present a spatially extensive record of dinitrogen (N₂) fixation rates and distributions of N₂ fixing microorganisms along with the results of exogenous phosphorus (P) addition experiments conducted during a series of cruises in the North Pacific Subtropical Gyre (NPSG). We measured the N₂ and carbon (C) fixation rates of...
Resource Type:: Article
Full Text:: phosphorus enhances nitrogen and carbon fixation in the oligotrophic North Pacific Katie S. Watkins

Large-scale bloom of Akashiwo sanguinea in the Northern California current system in 2009

Creator:: White, Angelicque E., Watkins-Brandt, Katie S., McKibben, S. Morgaine, Wood, A. Michelle, Hunter, Matthew, Forster, Zach, Du, Xiuning, and Peterson, William T.
Abstract:: Significant seabird mortality on the Oregon (OR) and Washington (WA) coast in 2009 has been attributed to a massive bloom of the dinoflagellate Akashiwo sanguinea (K. Hirasaka) G. Hansen & Ø. Moestrup. Initial, albeit limited, observations suggested this bloom began in WA and reached OR waters through southward transport. Here,...
Resource Type:: Article

Monitoring Oregon Coastal Harmful Algae: Observations and implications of a harmful algal bloom-monitoring project

Creator:: McKibben, S. Morgaine, Watkins-Brandt, Katie S., Wood, A. Michelle, Hunter, Matthew, Forster, Zach, Hopkins, Alyssa, Du, Xiuning, Eberhart, Bich-Thuy, Peterson, William T., and White, Angelicque E.
Abstract:: The accumulation of domoic acid (DA) and saxitoxins (STX), phycotoxins produced by some species of Pseudo-nitzschia and Alexandrium, respectively, in coastal food webs are a focus of research on the West Coast of the United States due to the deleterious effects they have on coastal ecosystems and economies. Results are...
Resource Type:: Article
Full Text:: ., Watkins-Brandt, K. S., Wood, A. M., Hunter, M., Forster, Z., Hopkins, A., ... & White, A. E. (2015

Shallow Aquifer Recharge from Irrigation in a Semi-arid Agricultural Valley in New Mexico, USA

Creator:: Ochoa, Carlos G., Fernald, Alexander G., Guldan, Steven J., Tidwell, Vincent C., and Shukla, Manoj K.
Abstract:: Irrigation percolation can be an important source of shallow aquifer replenishment in arid regions of the southwestern United States. Aquifer recharge derived from irrigation percolation can be more significant in fluvial valleys overlying shallow aquifers where highly permeable soils allow rapid water infiltration and aquifer replenishment. We used data from...
Resource Type:: Article
Full Text:: AGRICULTURAL VALLEY IN NEW MEXICO, USA 2 Carlos G. Ochoa1, Alexander G. Fernald2, Steven J. Guldan3, Vincent

ScholarsArchive@OSU

Remineralization of phytoplankton-derived organic matter by natural populations of heterotrophic bacteria

Foraminiferal faunal estimates of paleotemperature: Circumventing the no-analog problem yields cool ice age tropics

Drug Hypersensitivity: How Drugs Stimulate T Cells via Pharmacological Interaction with Immune Receptors

Nature and Extent of the Deep Biosphere

Constructing dependency in coping with stressful occupational events : at what cost for wives of professional athletes?

An Open Ocean Trial of Controlled Upwelling Using Wave Pump Technology

Addition of inorganic or organic phosphorus enhances nitrogen and carbon fixation in the oligotrophic North Pacific

Large-scale bloom of Akashiwo sanguinea in the Northern California current system in 2009

Monitoring Oregon Coastal Harmful Algae: Observations and implications of a harmful algal bloom-monitoring project

Shallow Aquifer Recharge from Irrigation in a Semi-arid Agricultural Valley in New Mexico, USA

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