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• 1. [Article] Ecosystem-Wide Impacts of Alternative Bycatch Reduction Strategies: An Ecological-Economic Assessment of the Australian Southern and Eastern Scalefish and Shark Fishery

  A concern for the consequences of bycatch and discards in fisheries has led to the implementation of new policies and fisheries management plans aimed at their reduction in many fisheries around the world. ...

  Citation × Citation Citation Abstract Copy Title: Ecosystem-Wide Impacts of Alternative Bycatch Reduction Strategies: An Ecological-Economic Assessment of the Australian Southern and Eastern Scalefish and Shark Fishery Author: Kulmala, Soile, Fulton, Beth, Thébaud, Olivier, Hutton, Trevor, Pascoe, Sean A concern for the consequences of bycatch and discards in fisheries has led to the implementation of new policies and fisheries management plans aimed at their reduction in many fisheries around the world. Such plans have been developed for the Australian Commonwealth fisheries (the most recent bycatch action plan extends from 2009 to 2011 for this case study). These plans list a wide variety of species, including both commercial fish and non-commercial species, particularly those listed as threatened, endangered or protected. The paper presents an analysis of the potential economic and ecological impacts of alternative approaches to the implementation of these plans, with particular emphasis on the use of economic incentives. The analysis is centered on the Australian Commonwealth Southern and Eastern Scalefish and Shark Fishery, and is based on the Atlantis simulation model developed within CSIRO. Atlantis is a spatially explicit model with subcomponents that model the coupled physical transport-biogeochemical processes as elements of the ecosystem, as well as sub-models to include the fisheries, the annual assessments, and the implementation of management regulations and compliance. A feature of the Atlantis model is that it incorporates a fleet dynamics model that allows the main fleets to adjust their fishing behavior in response to incentives. Incentive-based bycatch management scenarios such as the use of deemed values within the existing trade-able quota scheme for over-quota landings, or the imposition of a tax on catches of threatened, endangered and protected species, are considered (as well as tradable bycatch quotas). The consequences of these scenarios are presented in terms of both ecological and economic impacts, with a focus on the ecosystem-wide implications of alternative regulations. Title: Ecosystem-Wide Impacts of Alternative Bycatch Reduction Strategies: An Ecological-Economic Assessment of the Australian Southern and Eastern Scalefish and Shark Fishery Author: Kulmala, Soile, Fulton, Beth, Thébaud, Olivier, Hutton, Trevor, Pascoe, Sean A concern for the consequences of bycatch and discards in fisheries has led to the implementation of new policies and fisheries management plans aimed at their reduction in many fisheries around the world. Such plans have been developed for the Australian Commonwealth fisheries (the most recent bycatch action plan extends from 2009 to 2011 for this case study). These plans list a wide variety of species, including both commercial fish and non-commercial species, particularly those listed as threatened, endangered or protected. The paper presents an analysis of the potential economic and ecological impacts of alternative approaches to the implementation of these plans, with particular emphasis on the use of economic incentives. The analysis is centered on the Australian Commonwealth Southern and Eastern Scalefish and Shark Fishery, and is based on the Atlantis simulation model developed within CSIRO. Atlantis is a spatially explicit model with subcomponents that model the coupled physical transport-biogeochemical processes as elements of the ecosystem, as well as sub-models to include the fisheries, the annual assessments, and the implementation of management regulations and compliance. A feature of the Atlantis model is that it incorporates a fleet dynamics model that allows the main fleets to adjust their fishing behavior in response to incentives. Incentive-based bycatch management scenarios such as the use of deemed values within the existing trade-able quota scheme for over-quota landings, or the imposition of a tax on catches of threatened, endangered and protected species, are considered (as well as tradable bycatch quotas). The consequences of these scenarios are presented in terms of both ecological and economic impacts, with a focus on the ecosystem-wide implications of alternative regulations. Close