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  • High-frequency measurements of total CO₂ : Method development and first oceanographic observations

    Creator:
    Bandstra, Leah M.
    Abstract:
    As concern grows about the long-term effects of increasing atmospheric CO₂ concentrations, it becomes increasingly important to understand the cycling of carbon on Earth, particularly in the dynamic marine reservoir. Gas exchange and relatively rapid ocean mixing times mean that the oceans play a significant role in determining the atmospheric...
    Resource Type:
    Masters Thesis
    Full Text:
    ............................................................................. 43 A4. Carbon content of salts used to prepare artificial seawater ............. 44 B 1. Data for

  • 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:
    carbon faster than organic nitrogen. Shell carbon isotopes of all cohorts show a decreasing dependence

  • 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:
    Acidification, 2012, Hendriks et al. 2014). Seagrasses are known to draw down water column carbon dioxide

  • Remineralization of marine particulate organic matter

    Creator:
    Burkhardt, Brian Gary
    Abstract:
    Marine microorganisms play a significant role in the cycling of nutrients in the open ocean through production, consumption, and degradation of organic matter (OM). Carbon (C), nitrogen (N), and phosphorus (P) are essential ingredients in every known recipe for life. However, the cycling of each of these elements proceeds at...
    Resource Type:
    Masters Thesis
    Full Text:
    ). Carbon (C), nitrogen (N), and phosphorus (P) are essential ingredients in every known recipe for life

  • Pacific Northwest rangeland carbon sequestration

    Creator:
    Wiggins, Seth T.
    Abstract:
    This paper models the supply curve of carbon sequestration on Pacific Northwest rangelands. Rangeland managers have the ability to sequester carbon in agricultural soils by implementing alternative management practices on their farms. Their low adoption rate in practice suggests a high opportunity cost associated with their implementation. To increase their...
    Resource Type:
    Masters Thesis
    Full Text:
    . Alternative land management practices that sequester carbon dioxide in agricultural soils would modify

  • Spatiotemporal dynamics and drivers of stream pCO₂ in a headwater mountain catchment in the Cascade Mountains, Oregon

    Creator:
    Dosch, Nicholas T.
    Abstract:
    We examined the spatial and temporal variability of stream carbon dioxide (CO₂) and the drivers of these variations in a headwater catchment. To examine temporal variation and drivers, we measured stream and hyporheic pCO₂ at high temporal resolution over 11 months in a 95.9-ha forested headwater catchment in the Western...
    Resource Type:
    Masters Thesis
    Full Text:
    stream pCO2 and stream discharge, mean velocity and the carbon dioxide gas transfer velocity. Stream