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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

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  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] Sustainable Management of Fishery Resources and Development in Africa: Sustainable Management of Artisanal Fisheries and Local Development in Senegalese Coast Facing The Globalization of Fish Market

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Sustainable Management of Fishery Resources and Development in Africa: Sustainable Management of Artisanal Fisheries and Local Development in Senegalese Coast Facing The Globalization of Fish Market Author: Astou, Niang Ndeye, Michel, Lesourd Abstract only. Title: Sustainable Management of Fishery Resources and Development in Africa: Sustainable Management of Artisanal Fisheries and Local Development in Senegalese Coast Facing The Globalization of Fish Market Author: Astou, Niang Ndeye, Michel, Lesourd Abstract only. Close

• 3. [Article] Management Strategy Evaluation for Peruvian Anchoveta (Engraulis Ringens) Fishery

  No poster available.

  Citation × Citation Citation Abstract Copy Title: Management Strategy Evaluation for Peruvian Anchoveta (Engraulis Ringens) Fishery Author: Diaz, Erich, Tam, Jorge, Oliveros-Ramos, Ricardo, De Lara, Michel No poster available. Title: Management Strategy Evaluation for Peruvian Anchoveta (Engraulis Ringens) Fishery Author: Diaz, Erich, Tam, Jorge, Oliveros-Ramos, Ricardo, De Lara, Michel No poster available. 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] 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