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• 1. [Article] The Valuation of Marine Ecosystems in West Africa: A tool for Decision-Making in Ecosystems Management and MPA Governance

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: The Valuation of Marine Ecosystems in West Africa: A tool for Decision-Making in Ecosystems Management and MPA Governance Author: Failler, Pierre, Binet, Thomas Abstract only. Title: The Valuation of Marine Ecosystems in West Africa: A tool for Decision-Making in Ecosystems Management and MPA Governance Author: Failler, Pierre, Binet, Thomas Abstract only. Close

• 2. [Article] Foundations for Effective Marine Ecosystem Management

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Foundations for Effective Marine Ecosystem Management Author: McClurg, Tom Research Paper Title: Foundations for Effective Marine Ecosystem Management Author: McClurg, Tom Research Paper Close

• 3. [Article] Forage Fish in the California Current Large Marine Ecosystem: Ecological Linkages, Current Catches and Values

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Forage Fish in the California Current Large Marine Ecosystem: Ecological Linkages, Current Catches and Values Author: Cisneros-Montemayor, Andres, Sumaila, Rashid Abstract only. Title: Forage Fish in the California Current Large Marine Ecosystem: Ecological Linkages, Current Catches and Values Author: Cisneros-Montemayor, Andres, Sumaila, Rashid Abstract only. Close

• 4. [Article] Fishing in a Shallow Lake: A Case for Effort Controls?

  In many situation, fishing activity adversely impacts the state of the marine ecosystem, impacts which feed back to affect fish stocks. Some ecosystems appear to have multiple equilibria and exhibit hysteresis, ...

  Citation × Citation Citation Abstract Copy Title: Fishing in a Shallow Lake: A Case for Effort Controls? Author: Janmaat, John, Ruijs, Arjan In many situation, fishing activity adversely impacts the state of the marine ecosystem, impacts which feed back to affect fish stocks. Some ecosystems appear to have multiple equilibria and exhibit hysteresis, whereby they can become stuck in low productivity states. We show how adding ecosystem dynamics to a classic fisheries model can introduce hysteresis impacts, impacts that affect both the evolution of the fish stock and the fishery harvesting it. We demonstrate that harvest and effort taxes are not equivalent instruments for controlling this externality. We also show that if the fishery is sufficiently degraded, it may not be optimal to move the system back to a healthy environment. Title: Fishing in a Shallow Lake: A Case for Effort Controls? Author: Janmaat, John, Ruijs, Arjan In many situation, fishing activity adversely impacts the state of the marine ecosystem, impacts which feed back to affect fish stocks. Some ecosystems appear to have multiple equilibria and exhibit hysteresis, whereby they can become stuck in low productivity states. We show how adding ecosystem dynamics to a classic fisheries model can introduce hysteresis impacts, impacts that affect both the evolution of the fish stock and the fishery harvesting it. We demonstrate that harvest and effort taxes are not equivalent instruments for controlling this externality. We also show that if the fishery is sufficiently degraded, it may not be optimal to move the system back to a healthy environment. Close

• 5. [Article] A New Proposal of Sustainable Seafood Markets Index (Smi): the Case Study of the Port of Vigo (Spain)

  No poster available.

  Citation × Citation Citation Abstract Copy Title: A New Proposal of Sustainable Seafood Markets Index (Smi): the Case Study of the Port of Vigo (Spain) Author: Villasante, Sebastian, Rodriguez, Gonzalo No poster available. Title: A New Proposal of Sustainable Seafood Markets Index (Smi): the Case Study of the Port of Vigo (Spain) Author: Villasante, Sebastian, Rodriguez, Gonzalo No poster available. Close

• 6. [Article] Ecosystem Management: A Management View

  No poster available.

  Citation × Citation Citation Abstract Copy Title: Ecosystem Management: A Management View Author: Ravn-Jonsen, Lars J. No poster available. Title: Ecosystem Management: A Management View Author: Ravn-Jonsen, Lars J. No poster available. Close

• 7. [Article] Fishing Down the Food Chain: Modeling Trophic interactions in Exploited Marine Ecosystems

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Fishing Down the Food Chain: Modeling Trophic interactions in Exploited Marine Ecosystems Author: Wilen, James, Wilen, Christopher Abstract only. Title: Fishing Down the Food Chain: Modeling Trophic interactions in Exploited Marine Ecosystems Author: Wilen, James, Wilen, Christopher Abstract only. Close

• 8. [Article] Uses of ecosystem services provided by MPAs: how much do they impact the local economy?

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Uses of ecosystem services provided by MPAs: how much do they impact the local economy? Author: Person, Jeremy, Le Direach, Laurence, Lavisse, Elodie, Roncin, Nicolas, Boncoeur, Jean, Crec'hiriou, Romain, Marcos Diego, Concepcion Abstract only. Title: Uses of ecosystem services provided by MPAs: how much do they impact the local economy? Author: Person, Jeremy, Le Direach, Laurence, Lavisse, Elodie, Roncin, Nicolas, Boncoeur, Jean, Crec'hiriou, Romain, Marcos Diego, Concepcion Abstract only. Close

• 9. [Article] Building Ecological-Economic Models and Scenarios of Marine Resource Systems

  presentation

  Citation × Citation Citation Abstract Copy Title: Building Ecological-Economic Models and Scenarios of Marine Resource Systems Author: Thebaud, Olivier, Planque, Benjamin, Mahévas, Stéphanie, Vermard, Youen, Smith, Anthony D.M., Lample, Michel, Macher, Claire, Mullon, Christian, Innes, James, Quaas, Martin F., Doyen, Luc presentation Title: Building Ecological-Economic Models and Scenarios of Marine Resource Systems Author: Thebaud, Olivier, Planque, Benjamin, Mahévas, Stéphanie, Vermard, Youen, Smith, Anthony D.M., Lample, Michel, Macher, Claire, Mullon, Christian, Innes, James, Quaas, Martin F., Doyen, Luc presentation Close

• 10. [Article] Implications of bycatch reduction strategies for the economic viability of mixed fisheries

  There is growing recognition worldwide that the impacts of fishing on non-targeted components of marine ecosystems should be included in the assessment of fisheries sustainability. This leads to the inclusion ...

  Citation × Citation Citation Abstract Copy Title: Implications of bycatch reduction strategies for the economic viability of mixed fisheries Author: Thebaud, Olivier, Martinet, Vincent There is growing recognition worldwide that the impacts of fishing on non-targeted components of marine ecosystems should be included in the assessment of fisheries sustainability. This leads to the inclusion of new constraints in evaluations of the long-term bio-economic performance of fisheries. In this paper, we analyze the implications of such constraints based on the case of bycatch of juvenile hake in the Bay of Biscay (ICES area VIIIa,b) trawl fishery for nephrops. The analysis is based on a discrete time model of the trawl fishery including an age-structured representation of stock dynamics, with uncertainty. We define sustainability using the viability framework of analysis: viability objectives are represented as constraints which relate to the economic status of the fishing fleet and to the biological status of fish stocks. We include an ecological constraint defined as a minimal target threshold for the recruitment of mature hakes, which is related to the fishing mortality induced by trawlers on juvenile hake. Based on stochastic analysis, we define the probability that both economic and ecosystemic constraints are met, as a function of the level of these constraints. We use the model to assess the sustainability of the fishery under different scenarios as regards bycatch reduction strategies. Title: Implications of bycatch reduction strategies for the economic viability of mixed fisheries Author: Thebaud, Olivier, Martinet, Vincent There is growing recognition worldwide that the impacts of fishing on non-targeted components of marine ecosystems should be included in the assessment of fisheries sustainability. This leads to the inclusion of new constraints in evaluations of the long-term bio-economic performance of fisheries. In this paper, we analyze the implications of such constraints based on the case of bycatch of juvenile hake in the Bay of Biscay (ICES area VIIIa,b) trawl fishery for nephrops. The analysis is based on a discrete time model of the trawl fishery including an age-structured representation of stock dynamics, with uncertainty. We define sustainability using the viability framework of analysis: viability objectives are represented as constraints which relate to the economic status of the fishing fleet and to the biological status of fish stocks. We include an ecological constraint defined as a minimal target threshold for the recruitment of mature hakes, which is related to the fishing mortality induced by trawlers on juvenile hake. Based on stochastic analysis, we define the probability that both economic and ecosystemic constraints are met, as a function of the level of these constraints. We use the model to assess the sustainability of the fishery under different scenarios as regards bycatch reduction strategies. Close