Study Objectives: IPHC socioeconomic study was a direct response to the Commission’s “desire for more comprehensive economic information to support the overall management of the Pacific halibut resource in fulfillment of its mandate”, Commission’s objective is to develop stocks of Pacific halibut that permit “optimum yield from the fishery and...
A suite of metrics may be required to characterize ecosystem status and its resilience. Simplistic models, not accounting for the age composition complexity, can fail in predicting the impacts of anthropogenic activities and may not appropriately evaluate long-term consequences of management. Old-growth age structure is necessary for maintaining long-term sustainable...
Multispecies fisheries pose a considerable management difficulty with respect to quota allocation between species. The applicability is to single vessel and its individual quotas, as well as to the fleet as a whole. Negative externalities may be created if Total Allowable Catches (TACs) are not set in optimal proportions. That...
Multispecies fisheries pose a considerable management difficulty with respect to quota allocation between species. The applicability is to single vessel and its individual quotas, as well as to the fleet as a whole. Negative externalities may be created if Total Allowable Catches (TACs) are not set in optimal proportions. That...
Fisheries management has been traditionally single-species oriented. Only recently more pressure has been put on developing a holistic, science-based approach that considers the ecosystem as a whole. This approach is widely known as ecosystem-based fisheries management (EBFM). One of the most often highlighted aspects of EBFM is the relevance of predator-prey...
Information acquired by fishermen while fishing play a crucial role in their decision-making process. Those are used to form the basis for update of beliefs on productivity of a range of available fishing grounds while acting in an uncertain environment. In this paper, we focus on the formation of fishermen's...
Using stock assessments to inform management and decision makers about the impacts of fishing is increasing worldwide. Stock assessments are costly to conduct well, and there is often a data management lag in terms of when data used to inform stock assessment predictions are available for inclusion in the model....
Fisheries managers are increasingly expected to manage fisheries in an “ecosystem-based” manner – accounting for ecological interdependencies across species and their coupling with the physical environment. Yet managers lack rigorous, bioeconomic EBM indicators to assess tradeoffs and measure whether the natural capital in exploited ecosystems is sustainably managed. We build...
The paper analyzes a situation in which the fishing fleet is subject to restrictive regulation regarding the harvest of its primal target species due to biological overfishing that in turn reveals a high level of overcapacity. The goal is to model fishermen’s expectations and likely responses to the government initiated...
Multispecies fisheries pose a considerable management difficulty with respect to quota allocation between species. Externalities of direct control over the harvest may include, among others, creation of unbalanced predator‐prey relationships in the environment. That, in turn, may affect the individual economic incentives of fishing vessels. Combining economic and ecological factors...