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Filtering by: Committee Member Heppell, Selina S. Decade 2010-2019 Degree Field Fisheries Science

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
Patch dynamics of desert fishes in the arid wetlands of western Utah

Creator:

Sáenz, Jessica

Abstract:

The conservation of declining desert fish species requires the identification of relations between fish population dynamics and their environments. Dynamic occupancy modeling, an approach that requires less information than traditional mark-recapture studies, may help identify important factors affecting population processes and aid desert fish conservation and restoration efforts. I used...

Resource Type:

Masters Thesis
Distribution and movements of Chinook salmon, Oncorhynchus tshawytscha, returning to the Yukon River basin

Creator:

Eiler, John H.

Abstract:

Chinook salmon, Oncorhynchus tshawytscha, returning to the Yukon River basin and other large river systems in western Alaska have declined dramatically since the late 1990s. This continuing trend has raised concerns over the future status of the returns, and severely impacted commercial and subsistence fisheries within the drainage. Management is...

Resource Type:

Dissertation