Index Catalog // ScholarsArchive@OSU

Dynamics of organic matter production and degradation during coastal diatom blooms

Creator:: Wetz, Michael S.
Abstract:: Experiments were designed to answer key questions about diatom-derived organic matter cycling (i.e., production and degradation) in coastal systems. Dissolved organic matter (DOM) production was examined in axenic batch cultures of five diatom species. Dissolved organic carbon (DOC) release rates varied between species, but were significantly higher for all species...
Resource Type:: Dissertation
Full Text:: : ________________________________________________________________________ Patricia A. Wheeler Experiments were designed to answer key questions about

Insights from stable isotope dynamics into the sensitivity of larval Pacific oysters to ocean acidification

Creator:: Brunner, Elizabeth Lev
Abstract:: Larvae of the Pacific Oyster, Crassostrea gigas, at Whiskey Creek Shellfish Hatchery (WCH) in Netarts Bay, Oregon, are negatively impacted by high-CO₂ water and exposure during the initial shell formation period appears to be particularly damaging. To investigate the mechanism of this early susceptibility, several cohorts of larvae at WCH...
Resource Type:: Masters Thesis
Full Text:: develop in Netarts Bay seawater in 4 L glass beakers held at 25°C for 24 hours. Every two hours, ~1000

Effects of Teaching Household Actions to Address Ocean Acidification on Student Knowledge and Attitudes

Creator:: Erickson, Brian D.
Abstract:: Ocean acidification (OA), the change in ocean chemistry due to increasing concentrations of anthropogenic carbon dioxide in the atmosphere, is an environmental problem that is an active area of scientific research yet remains largely outside of the public’s awareness. It is often assumed that if we raise OA awareness, then...
Resource Type:: Masters Thesis
Full Text:: innovations. Marine Biology, 160(8), 1863–1874. http://doi.org/10.1007/s00227-012-1943-4 8. Frisch, L. C

Development of a continuous flow analysis system for trace iron: a data report

Creator:: Lakin, Elizabeth N.
Resource Type:: Research Paper
Full Text:: with 240 μL 6N HCl per 60 mL of sample. CTD samples were collected in a similar manner. We were

New Insights on the Southern Ocean Carbon Cycle from Biogeochemical Argo Floats

Creator:: Williams, Nancy L.
Abstract:: The Southern Ocean plays an important role in the ocean’s uptake of heat and carbon yet the processes controlling this uptake are not well understood. To date, more than 100 biogeochemical profiling floats that measure water column pH, oxygen, nitrate, fluorescence, and backscattering at 10-day intervals have been deployed throughout...
Resource Type:: Dissertation
Full Text:: ALGORITHMS TO ESTIMATE WATER COLUMN PH IN THE SOUTHERN OCEAN Nancy L. Williams, Laurie W. Juranek

Concentration-Runoff Relationships of Contrasting Small Mountainous Rivers in the Pacific Northwest, USA: Insights into the Weathering of Rhenium

Creator:: Ghazi, Layla
Abstract:: This study examines dissolved rhenium (Re) as a function of water runoff using river samples from two contrasting watersheds, the Eel and Umpqua Rivers in the Pacific Northwest, USA. These watersheds share many key characteristics in terms of size, discharge, climate, and vegetation, but they have a 10-fold difference in...
Resource Type:: Masters Thesis
Full Text:: of dissolved Re release. At mean discharge, Re concentration in the Eel river (3.5 pmol L-1) is

Calcium Ion Transport via Seeping Flow Events through Epikarst Microfissures

Creator:: Windom, Lisa M.
Abstract:: Solute transport models in karst groundwater must consider variable and complex flow regimes. Within fissures less than 2 mm in aperture, during unsaturated flow events, seeping flow may flow as films or under capillary tension as a capillary rivulet. This project focuses on exploring the mass transport characteristics of seeping...
Resource Type:: Masters Thesis
Full Text:: , to the total distance, L, of the film on the rock (Equation 6). (6) Once an average width

Seagrasses as Potential Chemical Refugia for Acidification-Sensitive Bivalves

Creator:: Smith, Stephanie Rae
Abstract:: As the effect of ocean acidification (OA) on marine calcifiers is better understood, a range of potential mitigative strategies have been proposed, many of which are plagued by concerns of scale and feasibility. One oft-cited option is to increase the biomass of photosynthetic organisms to remove CO₂ from the water...
Resource Type:: Masters Thesis
Full Text:: (LAI) was calculated as: 𝐿𝐴𝐼 = (𝐿 𝑥 𝑊 𝑥 #) ∗ ( 𝑄 + 𝐿 𝑄 ) the total measured leaf area

Buffering Estuarine Sediments Against Acidification

Creator:: Myers, Tristen J.
Abstract:: Globally rising anthropogenic CO₂ emissions have resulted in the increased prevalence of ocean acidification (OA) which has the potential to impact shell-forming organisms. On geologic timescales, the largest contributor to atmospheric CO₂ was volcanoes, counterbalanced by weathering and erosion, but due to increased anthropogenic emissions, these processes alone can no...
Resource Type:: Masters Thesis
Full Text:: alkalinity concentrations from an individual chamber (mmol alkalinity L-1), the measured flow rate (ml min

Investigating rotating microelectrodes for rapid in situ detection of oxygen

Creator:: Chace, Peter J.
Abstract:: Rotating disc electrodes (RDEs) exploit the induced flushing of a radially spun electrode to increase the overall rate of analyte flux to an electrode sensing surface and its resulting signal current (i). Here initial efforts to evaluate a rotating platinum (Pt) microelectrode for efficacy as a rapid in situ dissolved...
Resource Type:: Masters Thesis
Full Text:: isc su rfa ce to th e O -rin g se a l, a n d ta p e rs fro m a 7 m m d ia m e

ScholarsArchive@OSU

Dynamics of organic matter production and degradation during coastal diatom blooms

Insights from stable isotope dynamics into the sensitivity of larval Pacific oysters to ocean acidification

Effects of Teaching Household Actions to Address Ocean Acidification on Student Knowledge and Attitudes

Development of a continuous flow analysis system for trace iron: a data report

New Insights on the Southern Ocean Carbon Cycle from Biogeochemical Argo Floats

Concentration-Runoff Relationships of Contrasting Small Mountainous Rivers in the Pacific Northwest, USA: Insights into the Weathering of Rhenium

Calcium Ion Transport via Seeping Flow Events through Epikarst Microfissures

Seagrasses as Potential Chemical Refugia for Acidification-Sensitive Bivalves

Buffering Estuarine Sediments Against Acidification

Investigating rotating microelectrodes for rapid in situ detection of oxygen

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