• Agent-Based Modeling of the Bristol Bay Drift Gillnet Salmon Fishery

      Chasco, Brandon; Knapp, Gunnar; Hilborn, Ray (School of Aquatic & Fishery Sciences, University of Washington, 2006)
      Alaska’s Bristol Bay sockeye salmon fishery is the world’s largest fishery for this species. Between 1980 and 2005, annual catches averaged 24 million fish, with an annual average ex-vessel value of US$165 million. Historically, the Bristol Bay sockeye salmon fishery has accounted for 20-40% of the total value of Alaska salmon fisheries. Similar to most other Alaska salmon fisheries, Bristol Bay fisheries are managed to achieve escapement goals for several major river systems flowing into Bristol Bay. Fish- ing is allowed during period “openings” over the season to catch returning salmon surplus to escapement goals. In general, the current management system is reasonably successful from a biological point of view, in the sense that managers are usually able to control fishing effort to achieve escapement goals. Our initial fishery data analysis supports key model relationships that we have hypothesized have important implications for how prices, runs, and management may affect the Bristol Bay fishery. For example, the higher the ex-vessel value of the fishery, the more rapid the rate of permit outmigration from the Bristol Bay region.
    • Options For Restructuring Alaska Salmon Fisheries

      Knapp, Gunnar (Institute of Social and Economic Research, University of Alaska., 2003)
      The paper provides a very brief introduction to the very complicated topic of options for restructuring Alaska salmon fisheries. By "restructuring" we mean any change in the rules affecting how, where, when, and by whom, salmon are harvested in Alaska. The main goal of this paper is to show that there are many different ways to go about restructuring. the choices are not simply between broad options such as "permit stacking" or "buybacks" or "co-ops", but also - and critically - how those options are designed and implemented. Prepared for a panel discussion for the Alaska Legislature's Fish Caucus on "Restructuring the Salmon Industry: A discussion of Fishery Management Models".