The post-World War II era saw the development of powerful self-contained fishing fleets, so-calle... more The post-World War II era saw the development of powerful self-contained fishing fleets, so-called distant-water fleets (DWFs), which roamed the world's oceans, seeking out rich harvesting targets and practicing pulse fishing. With the creation in the 1980s of coastal states' extended economic zones (EEZs), to manage fisheries out to 200 miles from the shore, it was hoped that the DWFs would close down. But the ranges of many important commercial fish stocks straddle the boundaries of several EEZs, and continue out into international waters. Thus, the consequence of creating the EEZs has been to encourage development of coastal countries' national fleets, while the DWFs continue to harvest in international waters. Here, we model the fish war between a DWF and a regionally-based coalition of coastal states, operating out of their EEZs. The outcome is again a pulse fishery, but one which may be even more destructive than was the former situation, when the DWF was unopposed...
Canadian Journal of Fisheries and Aquatic Sciences, 2006
The failures of traditional target-species management have led many to propose an ecosystem appro... more The failures of traditional target-species management have led many to propose an ecosystem approach to fisheries to promote sustainability. The ecosystem approach is necessary, especially to account for fisheryecosystem interactions, but by itself is not sufficient to address two important factors contributing to unsustainable fisheries: inappropriate incentives bearing on fishers and the ineffective governance that frequently exists in commercial, developed fisheries managed primarily by total-harvest limits and input controls. We contend that much greater emphasis must be placed on fisher motivation when managing fisheries. Using evidence from more than a dozen natural experiments in commercial fisheries, we argue that incentive-based approaches that better specify community and individual harvest or territorial rights and price ecosystem services and that are coupled with public research, monitoring, and effective oversight promote sustainable fisheries.
... sjømateksport av reduserte handelsbarrierer av Stein Ivar Steinshamn Frank Asche Ragnar Tvete... more ... sjømateksport av reduserte handelsbarrierer av Stein Ivar Steinshamn Frank Asche Ragnar Tveterås SNF-prosjekt nr. ... konkurrenter (andre eksportører) og der vi har størst fortjeneste. Teorien om komparative fortrinn er med andre ord ikke i stand til å svare på dette spørsmålet. ...
... (See Reed [1974] and Jaquette [1974]. whose work applied more generally to stochastic growth ... more ... (See Reed [1974] and Jaquette [1974]. whose work applied more generally to stochastic growth models.) Explicitly, Reed and Jaquette proved that the optimal harvesting policy is of a type called an (A S, AR)-policy, or threshold policy, one which specifies both a target ...
The post-World War II era saw the development of powerful self-contained fishing fleets, so-calle... more The post-World War II era saw the development of powerful self-contained fishing fleets, so-called distant-water fleets (DWFs), which roamed the world's oceans, seeking out rich harvesting targets and practicing pulse fishing. With the creation in the 1980s of coastal states' extended economic zones (EEZs), to manage fisheries out to 200 miles from the shore, it was hoped that the DWFs would close down. But the ranges of many important commercial fish stocks straddle the boundaries of several EEZs, and continue out into international waters. Thus, the consequence of creating the EEZs has been to encourage development of coastal countries' national fleets, while the DWFs continue to harvest in international waters. Here, we model the fish war between a DWF and a regionally-based coalition of coastal states, operating out of their EEZs. The outcome is again a pulse fishery, but one which may be even more destructive than was the former situation, when the DWF was unopposed...
Canadian Journal of Fisheries and Aquatic Sciences, 2006
The failures of traditional target-species management have led many to propose an ecosystem appro... more The failures of traditional target-species management have led many to propose an ecosystem approach to fisheries to promote sustainability. The ecosystem approach is necessary, especially to account for fisheryecosystem interactions, but by itself is not sufficient to address two important factors contributing to unsustainable fisheries: inappropriate incentives bearing on fishers and the ineffective governance that frequently exists in commercial, developed fisheries managed primarily by total-harvest limits and input controls. We contend that much greater emphasis must be placed on fisher motivation when managing fisheries. Using evidence from more than a dozen natural experiments in commercial fisheries, we argue that incentive-based approaches that better specify community and individual harvest or territorial rights and price ecosystem services and that are coupled with public research, monitoring, and effective oversight promote sustainable fisheries.
... sjømateksport av reduserte handelsbarrierer av Stein Ivar Steinshamn Frank Asche Ragnar Tvete... more ... sjømateksport av reduserte handelsbarrierer av Stein Ivar Steinshamn Frank Asche Ragnar Tveterås SNF-prosjekt nr. ... konkurrenter (andre eksportører) og der vi har størst fortjeneste. Teorien om komparative fortrinn er med andre ord ikke i stand til å svare på dette spørsmålet. ...
... (See Reed [1974] and Jaquette [1974]. whose work applied more generally to stochastic growth ... more ... (See Reed [1974] and Jaquette [1974]. whose work applied more generally to stochastic growth models.) Explicitly, Reed and Jaquette proved that the optimal harvesting policy is of a type called an (A S, AR)-policy, or threshold policy, one which specifies both a target ...
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