Coupled Wave and Surge Modeling of Tillamook Bay, Oregon: Extreme Events and Climate Change Impacts

Estuaries represent the confluence of land and ocean environments and encompass a number of complex interactions amongst tides, winds, offshore waves and the riverine contributions, all of which contribute to total water levels (TWLs).The study of TWLs and the relative weight of its components can assist local comm

Interactions of Wind-Driven and Tidally-Driven Circulation in the Oregon Coastal Ocean

Influences of tidal and slower (subtidal) oceanic flows over the continental shelf and slope off Oregon are studied using a high-resolution ocean circulation model and comparative model-data analyses. The model is based on the Regional Ocean Modeling System (ROMS), a fully nonlinear, three-dimensional model (using hydrostatic and Boussinesq approximations).

Seasonal Hydrography and Hypoxia of Coos Bay, Oregon

The recent rise of inner shelf hypoxia in the California Current System has caused concern within the scientific community, sparking a surge in studies addressing the issue. While regional studies of hypoxia abound, relatively little attention has been focused on the smaller coastal estuarine systems in the Pacific Northwest. Here, we present results fromCoos Bay, a small, highly seasonal estuary on the southern Oregon coast. 

 

Evaluating the Data-Poor Fishery Stock Assessment Method, DB-SRA

Depletion-Based Stock Reduction Analysis (DB-SRA; Dick and MacCall, 2011) is a catch-only fisheries stock assessment model that has been developed to estimate an overfishing limit (OFL) in data-poor situations. DB-SRA projects the biomass trajectories of a stock by means of a catch time series and five parameters: the instantaneous, per annum, rate of natural mortality (M), age at 50% maturity, FMSY/M, BMSY/B0, and the predicted depletion of the stock from its unfished condition.

Modeling abiotic influences on disease dynamics for the complex life cycle of the myxozoan parasite Ceratomyxa shasta

Most parasites and their hosts live in a balance within their environment; however a disease outbreak can occur when either the parasite, host, or environment, are perturbed. Myxozoan parasites are associated with a wide variety of cultured and wild fish populations. Most myxozoans are relatively benign to their vertebrate host; however some cause dramatic population level effects on both cultured and wild fish populations. These parasites have a complex life cycle involving a vertebrate host (fish), an invertebrate host (annelid), and two spore stages (actinospore and myxospore).

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