000008056 001__ 8056
000008056 005__ 20231129124942.0
000008056 0247_ $$2DOI$$a10.6083/x059c786m
000008056 037__ $$aETD
000008056 245__ $$aAn individual-based model to evaluate juvenile chinook salmon migration in the Columbia river estuary
000008056 260__ $$bOregon Health and Science University
000008056 269__ $$a2020
000008056 336__ $$aDissertation
000008056 502__ $$bPh.D.
000008056 520__ $$aAn individual-based model (IBM) was developed to explore juvenile Chinook salmon (Oncorhynchus tshawytscha) migration patterns in the Columbia River estuary. The model used outputs from the hydrodynamic model SELFE as a virtual environment. There were several submodels, including a movement model that simulated Lagrangian transport and active swimming and a bioenergetics model that computed growth. A predation model was also developed to explore potential impacts of avian predators on survival. Migration was simulated for yearling and subyearling Chinook salmon, and swimming behaviors were developed based on assumptions regarding habitat usage. Yearling Chinook salmon behaviors optimized efficient migration, while subyearling Chinook salmon behaviors prioritized growth. Passive drift and random walk behaviors for both life-history types served as null models to compare the more sophisticated behaviors against.
000008056 542__ $$fIn copyright - single owner
000008056 650__ $$aEstuaries$$040221
000008056 650__ $$aRivers$$035650
000008056 650__ $$aHydrodynamics$$038932
000008056 650__ $$aSalmon$$025679
000008056 650__ $$aEcosystem$$030218
000008056 650__ $$aDecision Making$$017417
000008056 691__ $$aSchool of Medicine$$041369
000008056 692__ $$aDepartment of Environmental and Biomolecular Systems$$041414
000008056 7001_ $$aMorrice, Katherine J.
000008056 8564_ $$9d5fe9c0e-7ca1-4f51-bc36-79539551eb64$$s7580311$$uhttps://digitalcollections.ohsu.edu/record/8056/files/Morrice.Katherine.2020.pdf
000008056 905__ $$a/rest/prod/x0/59/c7/86/x059c786m
000008056 909CO $$ooai:digitalcollections.ohsu.edu:8056$$pstudent-work
000008056 980__ $$aTheses and Dissertations