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Filtering by: Committee Member Freeman, P. K. Remove constraint Committee Member: Freeman, P. K. Academic Affiliation Fisheries and Wildlife Remove constraint Academic Affiliation: Fisheries and Wildlife

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  • Habitat relationships of native and non-native fishes of the Willamette River, Oregon

    Creator:
    Williams, Joshua E.
    Abstract:
    The Willamette River flows north between the Cascade Mountains and Coast Range of western Oregon within a 29,728-km² basin. The fish community in the geologically young basin consists of 36 native species, but introductions of non-native fishes have added 33 additional species for a total of 69 fish species. During...
    Resource Type:
    Masters Thesis
    Full Text:
    during 2011-2013. Information is ranked by habitat type, p-value significance and then species code

  • Evaluating the data-poor fishery stock assessment method, DB-SRA

    Creator:
    Owashi, Brandon R.
    Abstract:
    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...
    Resource Type:
    Masters Thesis
    Full Text:
    equal to the age at 50% maturity (AMAT). 𝐵𝑡 = 𝐵𝑡−1 + 𝑃(𝐵𝑡−𝑎) − 𝐶𝑡−1 (1.2) where B is