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• 1. [Article] A Stochastic Viability Approach for Ecosystem-Based Management of Mixed Fisheries: The Case of The Bay of Biscay Demersal Fisheries

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: A Stochastic Viability Approach for Ecosystem-Based Management of Mixed Fisheries: The Case of The Bay of Biscay Demersal Fisheries Author: Gourguet, Sophie, Doyen, Luc, Thébaud, Olivier, Macher, Claire, Guyader, Olivier Abstract only. Title: A Stochastic Viability Approach for Ecosystem-Based Management of Mixed Fisheries: The Case of The Bay of Biscay Demersal Fisheries Author: Gourguet, Sophie, Doyen, Luc, Thébaud, Olivier, Macher, Claire, Guyader, Olivier Abstract only. Close

• 2. [Article] Technical Change, price arbitrage and price flexibility; the case of Lobster holding in Québec compared to Eastern Canada

  Lobster (Homarus americanus) ranks first in Canada’s fisheries, but Quebec lobster represents only 6% of eastern Canada landings. During the peak of the fishing season in Quebec as elsewhere, supply is ...

  Citation × Citation Citation Abstract Copy Title: Technical Change, price arbitrage and price flexibility; the case of Lobster holding in Québec compared to Eastern Canada Author: Belhabib, Dyhia, Wilson, James R. Lobster (Homarus americanus) ranks first in Canada’s fisheries, but Quebec lobster represents only 6% of eastern Canada landings. During the peak of the fishing season in Quebec as elsewhere, supply is at its maximum and price is the lowest. For this reason, there has been considerable interest in Quebec in developing holding technologies that allow for price arbitrage over time. Such techniques already exist in other parts of Eastern Canada, but are less developed in Québec. This paper looks at the likely impacts of fishermen’s associations in Québec adopting lobster holding technologies that enable price arbitrage. We performed a technical and financial analysis that compared several alternative configurations of lobster holding technologies for Grande Rivière Québec. Of the configurations presented, a technique was proposed which seemed to maximize discounted profits. However, these results are nuanced by the fact that the overall effects of price arbitrage on the price signal over time may result in intertemporal resource rents being competed away. When we compared our results to other areas of Eastern Canada, this raised new questions about long term profitability, especially in a fishery such as Quebec, where management is based largely on input controls. We estimated a price flexibility equation as a function of lagged landings, seasonal dummy variables, the exchange rate between the United Stated and Canada, using SIMETAR-2008. A comparison of the two models, one from Quebec and one from Nova Scotia, suggests that investing in lobster holding technologies causes a smoothing of price variability. The results suggest that fishermen would try to maximize their profits by adopting an inter-temporal arbitrage strategy, but that profits in the absence of output controls, according to fisheries economic theory, could provoke an upward pressure on effective effort which would then accelerate the open access solution. This could negate the price arbitrage effect. Title: Technical Change, price arbitrage and price flexibility; the case of Lobster holding in Québec compared to Eastern Canada Author: Belhabib, Dyhia, Wilson, James R. Lobster (Homarus americanus) ranks first in Canada’s fisheries, but Quebec lobster represents only 6% of eastern Canada landings. During the peak of the fishing season in Quebec as elsewhere, supply is at its maximum and price is the lowest. For this reason, there has been considerable interest in Quebec in developing holding technologies that allow for price arbitrage over time. Such techniques already exist in other parts of Eastern Canada, but are less developed in Québec. This paper looks at the likely impacts of fishermen’s associations in Québec adopting lobster holding technologies that enable price arbitrage. We performed a technical and financial analysis that compared several alternative configurations of lobster holding technologies for Grande Rivière Québec. Of the configurations presented, a technique was proposed which seemed to maximize discounted profits. However, these results are nuanced by the fact that the overall effects of price arbitrage on the price signal over time may result in intertemporal resource rents being competed away. When we compared our results to other areas of Eastern Canada, this raised new questions about long term profitability, especially in a fishery such as Quebec, where management is based largely on input controls. We estimated a price flexibility equation as a function of lagged landings, seasonal dummy variables, the exchange rate between the United Stated and Canada, using SIMETAR-2008. A comparison of the two models, one from Quebec and one from Nova Scotia, suggests that investing in lobster holding technologies causes a smoothing of price variability. The results suggest that fishermen would try to maximize their profits by adopting an inter-temporal arbitrage strategy, but that profits in the absence of output controls, according to fisheries economic theory, could provoke an upward pressure on effective effort which would then accelerate the open access solution. This could negate the price arbitrage effect. Close

• 3. [Article] Optimizing intra-Annual Harvest in the Maine Lobster Fishery

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Optimizing intra-Annual Harvest in the Maine Lobster Fishery Author: Holland, Dan, Ryan, Richard Abstract only. Title: Optimizing intra-Annual Harvest in the Maine Lobster Fishery Author: Holland, Dan, Ryan, Richard Abstract only. Close

• 4. [Article] A Bio-Economic Model for the Viable Managementof the Coastal Fishery in French Guyana

  The coastal fishery in French Guyana is a challenging case study for the implementation of the ecosystem based fishery management. Although the current situation of this small scale fishery could be considered ...

  Citation × Citation Citation Abstract Copy Title: A Bio-Economic Model for the Viable Managementof the Coastal Fishery in French Guyana Author: Gourguet, Sophie, Doyen, Luc, Cisse, Abdoul, Blanchard, Fabian, Guyader, Olivier, Pereau, Jean Christophe The coastal fishery in French Guyana is a challenging case study for the implementation of the ecosystem based fishery management. Although the current situation of this small scale fishery could be considered as satisfactory, the viability of the fishery can be questioned. Indeed according to demographic scenarios, the growth of the population will generate an increase of local food demand and therefore growing fishing pressures. Moreover, there is no direct regulation for limiting the fishing catches. Models and quantitative methods to tackle this sustainability issue are still lacking for such mall-scale fisheries mainly because of the various complexities underlying the systems including the heterogeneity of the production factors, the weak selectivity of fleets and high fish biodiversity levels. In the present paper, we both use numerical simulations and a viability perspective to deal with such a problem. We first build a multi-species multi-fleets dynamic model relying on thirteen exploited species and four types of fleets. It accounts for potential trophic interactions, fishing effort and the corresponding costs and revenues. The model was fit on data collected since 2006 by Ifremer: daily production and efforts data, as well as economic data from a survey on the production costs and selling prices in 2009.The co-viability of the system under different scenarios of fishing efforts is studied through ecological and economic performances. The biological viability constraints focus on biodiversity index as species richness or trophic index while economic viability constraints intend to guarantee profitability to all the fleets. Title: A Bio-Economic Model for the Viable Managementof the Coastal Fishery in French Guyana Author: Gourguet, Sophie, Doyen, Luc, Cisse, Abdoul, Blanchard, Fabian, Guyader, Olivier, Pereau, Jean Christophe The coastal fishery in French Guyana is a challenging case study for the implementation of the ecosystem based fishery management. Although the current situation of this small scale fishery could be considered as satisfactory, the viability of the fishery can be questioned. Indeed according to demographic scenarios, the growth of the population will generate an increase of local food demand and therefore growing fishing pressures. Moreover, there is no direct regulation for limiting the fishing catches. Models and quantitative methods to tackle this sustainability issue are still lacking for such mall-scale fisheries mainly because of the various complexities underlying the systems including the heterogeneity of the production factors, the weak selectivity of fleets and high fish biodiversity levels. In the present paper, we both use numerical simulations and a viability perspective to deal with such a problem. We first build a multi-species multi-fleets dynamic model relying on thirteen exploited species and four types of fleets. It accounts for potential trophic interactions, fishing effort and the corresponding costs and revenues. The model was fit on data collected since 2006 by Ifremer: daily production and efforts data, as well as economic data from a survey on the production costs and selling prices in 2009.The co-viability of the system under different scenarios of fishing efforts is studied through ecological and economic performances. The biological viability constraints focus on biodiversity index as species richness or trophic index while economic viability constraints intend to guarantee profitability to all the fleets. Close

• 5. [Article] Addressing the Distribution of Bio-Economic Impacts of Management Measures Between Fleets: the Case of the Demersal Fisheries in the Bay of Biscay

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Addressing the Distribution of Bio-Economic Impacts of Management Measures Between Fleets: the Case of the Demersal Fisheries in the Bay of Biscay Author: Fresard, Marjolaine, Merzéréaud, Mathieu, Le Grand, Christelle, Macher, Claire, Bertignac, Michel, Guyader, Olivier, Daures, Fabienne, Fifas, Spyros, Le Corre, Lanwenn Abstract only. Title: Addressing the Distribution of Bio-Economic Impacts of Management Measures Between Fleets: the Case of the Demersal Fisheries in the Bay of Biscay Author: Fresard, Marjolaine, Merzéréaud, Mathieu, Le Grand, Christelle, Macher, Claire, Bertignac, Michel, Guyader, Olivier, Daures, Fabienne, Fifas, Spyros, Le Corre, Lanwenn Abstract only. Close

• 6. [Article] Bioeconomic Dynamic Modelling of the Chilean Southern Demersal Fishery

  The demersal fishery of southern Chile is a complex system including multiple species, fishing fleets and markets. Fishing activity is conducted under a rights-based system for southern hake (Merluccius ...

  Citation × Citation Citation Abstract Copy Title: Bioeconomic Dynamic Modelling of the Chilean Southern Demersal Fishery Author: Molina Hernandez, Renato, Gonzalez Poblete, Exequiel, Cerda-D'Amico, Rene The demersal fishery of southern Chile is a complex system including multiple species, fishing fleets and markets. Fishing activity is conducted under a rights-based system for southern hake (Merluccius australis) and hoki (Macroronus magellanicus), where a TAC is allocated in an even manner among fleets and operators. New management approaches not only call for the need of the simultaneous consideration of biological, technologic, economic, social, legal and institutional factors but also, stakeholders perceptions and interests are becoming increasingly relevant for decision making. In spite of the undeniable importance for stakeholder inclusion in fisheries management, their perception of the system status and expectations are frequently partial and biased by short term needs and interests. Thus, information on expected impacts of alternative management measures are a valuable guiding input to improve stakeholder perception. This paper, therefore explores the value of dynamic simulation model in providing illustrative information on bioeconomic impacts to the fishery system from alternative management measures. The dynamic simulation model is based on two main modules. A biologic module depicting the fish population dynamics, considering recruitment based on Beverton and Holt function. A bioeconomic module depicting fleet dynamics based investment functions by Clark et al. (1979) Munro and Munro (1998) and catch per unit of effort proportional to biomass. The model outputs are the species biomass, fleet size, effort level, fleet and vessel net benefits presented on a year basis. Fishery and fleet cumulative NPVs are also presented. Title: Bioeconomic Dynamic Modelling of the Chilean Southern Demersal Fishery Author: Molina Hernandez, Renato, Gonzalez Poblete, Exequiel, Cerda-D'Amico, Rene The demersal fishery of southern Chile is a complex system including multiple species, fishing fleets and markets. Fishing activity is conducted under a rights-based system for southern hake (Merluccius australis) and hoki (Macroronus magellanicus), where a TAC is allocated in an even manner among fleets and operators. New management approaches not only call for the need of the simultaneous consideration of biological, technologic, economic, social, legal and institutional factors but also, stakeholders perceptions and interests are becoming increasingly relevant for decision making. In spite of the undeniable importance for stakeholder inclusion in fisheries management, their perception of the system status and expectations are frequently partial and biased by short term needs and interests. Thus, information on expected impacts of alternative management measures are a valuable guiding input to improve stakeholder perception. This paper, therefore explores the value of dynamic simulation model in providing illustrative information on bioeconomic impacts to the fishery system from alternative management measures. The dynamic simulation model is based on two main modules. A biologic module depicting the fish population dynamics, considering recruitment based on Beverton and Holt function. A bioeconomic module depicting fleet dynamics based investment functions by Clark et al. (1979) Munro and Munro (1998) and catch per unit of effort proportional to biomass. The model outputs are the species biomass, fleet size, effort level, fleet and vessel net benefits presented on a year basis. Fishery and fleet cumulative NPVs are also presented. Close