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• 1. [Article] A Multivariate Poisson Approach to Estimating Target Catch and Bycatch Production

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: A Multivariate Poisson Approach to Estimating Target Catch and Bycatch Production Author: Stohs, Stephen, Hilger, James Abstract only. Title: A Multivariate Poisson Approach to Estimating Target Catch and Bycatch Production Author: Stohs, Stephen, Hilger, James Abstract only. Close

• 2. [Article] Fishery-Based indicators of Management Impact: Assessing Relevance and Robustness Using A Bio-Economic Simulation Model

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Fishery-Based indicators of Management Impact: Assessing Relevance and Robustness Using A Bio-Economic Simulation Model Author: Rivot, Etienne, Lehuta, Sigrid, Mahévas, Stéphanie, Vermard, Youen, Marchal, Paul, Le Floc'h, Pascal, Pelletier, Dominique Abstract only. Title: Fishery-Based indicators of Management Impact: Assessing Relevance and Robustness Using A Bio-Economic Simulation Model Author: Rivot, Etienne, Lehuta, Sigrid, Mahévas, Stéphanie, Vermard, Youen, Marchal, Paul, Le Floc'h, Pascal, Pelletier, Dominique Abstract only. Close

• 3. [Article] Simulation Model Evaluation of Some Fisheries Balance Indicators

  Chronic overcapacity has been identified as a major cause of the overfishing of Europe’s fish stocks and the poor economic performance of the European fishing fleets. Mechanisms are needed to ensure that ...

  Citation × Citation Citation Abstract Copy Title: Simulation Model Evaluation of Some Fisheries Balance Indicators Author: Scott, Robert, Sampson, David Chronic overcapacity has been identified as a major cause of the overfishing of Europe’s fish stocks and the poor economic performance of the European fishing fleets. Mechanisms are needed to ensure that the capacity of European fishing fleets remain proportionate to available fish stocks. To that end, the European Commission developed “Guidelines for an improved analysis of the balance between fishing capacity and fishing opportunities”, which specify a minimum set of fleet-based technical, biological, economic, and social indicators that purportedly measure the balance between fishing fleets and fish resources. A bioeconomic simulation model was developed to assist in the evaluation of some of these balance indicators. The model is age-structured, like standard single-species stock assessment models, but accommodates multiple independent fish stocks that are harvested by multiple independent fishing fleets. The fish stocks occupy multiple spatial regions with diffusion of fish between regions. The fishing fleets choose where and how to fish based on anticipated profits. Randomness is included in the simulated system in the annual fish recruitments and their spatial distribution. The model was used to generate a series of balance indicators that were then compared against the true conditions in the simulated fisheries to evaluate whether the indicators provide accurate signals of system status. The simulations showed that randomness in recruitment propagates directly into randomness in the balance indicators implying that it will be difficult to detect meaningful signals from any short time series of balance indicator values. Title: Simulation Model Evaluation of Some Fisheries Balance Indicators Author: Scott, Robert, Sampson, David Chronic overcapacity has been identified as a major cause of the overfishing of Europe’s fish stocks and the poor economic performance of the European fishing fleets. Mechanisms are needed to ensure that the capacity of European fishing fleets remain proportionate to available fish stocks. To that end, the European Commission developed “Guidelines for an improved analysis of the balance between fishing capacity and fishing opportunities”, which specify a minimum set of fleet-based technical, biological, economic, and social indicators that purportedly measure the balance between fishing fleets and fish resources. A bioeconomic simulation model was developed to assist in the evaluation of some of these balance indicators. The model is age-structured, like standard single-species stock assessment models, but accommodates multiple independent fish stocks that are harvested by multiple independent fishing fleets. The fish stocks occupy multiple spatial regions with diffusion of fish between regions. The fishing fleets choose where and how to fish based on anticipated profits. Randomness is included in the simulated system in the annual fish recruitments and their spatial distribution. The model was used to generate a series of balance indicators that were then compared against the true conditions in the simulated fisheries to evaluate whether the indicators provide accurate signals of system status. The simulations showed that randomness in recruitment propagates directly into randomness in the balance indicators implying that it will be difficult to detect meaningful signals from any short time series of balance indicator values. Close

• 4. [Article] Multi-fleet comparison of fisheries socioeconomic performance indicators: a case study in Southeastern Brazil

  Poster session.

  Citation × Citation Citation Abstract Copy Title: Multi-fleet comparison of fisheries socioeconomic performance indicators: a case study in Southeastern Brazil Author: Gasalla, Maria A., Sumaila, U. Rashid, Duarte, Luis F. A., Rodrigues, Amanda R. Poster session. Title: Multi-fleet comparison of fisheries socioeconomic performance indicators: a case study in Southeastern Brazil Author: Gasalla, Maria A., Sumaila, U. Rashid, Duarte, Luis F. A., Rodrigues, Amanda R. Poster session. Close

• 5. [Article] Comparing Energy intensity Results for Commercial Fisheries in France

  No poster available.

  Citation × Citation Citation Abstract Copy Title: Comparing Energy intensity Results for Commercial Fisheries in France Author: Dangeard, Isabelle, Le Floc'h, Pascal, Guyader, Olivier, Daures, Fabienne No poster available. Title: Comparing Energy intensity Results for Commercial Fisheries in France Author: Dangeard, Isabelle, Le Floc'h, Pascal, Guyader, Olivier, Daures, Fabienne No poster available. Close

• 6. [Article] Age Structure Metrics for Precautionary Management: Can Simpler Assessment Techniques Save Fish, Time, and Money?

  Stock assessment techniques currently used in the United States are extremely costly to implement, involve significant data requirements, and are inaccessible to all but a few stock assessment scientists. ...

  Citation × Citation Citation Abstract Copy Title: Age Structure Metrics for Precautionary Management: Can Simpler Assessment Techniques Save Fish, Time, and Money? Author: Harte, Michael, Heppell, Selina, Sylvia, Gil, Cusack, Christopher, Larkin, Sherry Stock assessment techniques currently used in the United States are extremely costly to implement, involve significant data requirements, and are inaccessible to all but a few stock assessment scientists. A systematic decrease in fishery yields and the designation of several species as overfished on the west coast of the United States have resulted in stricter protocols regarding sustainable fisheries management and the rebuilding of overfished stocks, including the need to set annual harvest limits for all exploited species. An alternative and simpler approach to stock assessment which could address this need is described and an evaluation framework set up. Although no results have been obtained to date, possible costs and benefits of incorporating this approach into fisheries management are discussed. Title: Age Structure Metrics for Precautionary Management: Can Simpler Assessment Techniques Save Fish, Time, and Money? Author: Harte, Michael, Heppell, Selina, Sylvia, Gil, Cusack, Christopher, Larkin, Sherry Stock assessment techniques currently used in the United States are extremely costly to implement, involve significant data requirements, and are inaccessible to all but a few stock assessment scientists. A systematic decrease in fishery yields and the designation of several species as overfished on the west coast of the United States have resulted in stricter protocols regarding sustainable fisheries management and the rebuilding of overfished stocks, including the need to set annual harvest limits for all exploited species. An alternative and simpler approach to stock assessment which could address this need is described and an evaluation framework set up. Although no results have been obtained to date, possible costs and benefits of incorporating this approach into fisheries management are discussed. 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] An Economic Approach to Optimizing The Level of Observer Coverage

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: An Economic Approach to Optimizing The Level of Observer Coverage Author: Stohs, Stephen, Kvamsdal, Sturla Abstract only. Title: An Economic Approach to Optimizing The Level of Observer Coverage Author: Stohs, Stephen, Kvamsdal, Sturla Abstract only. Close

• 9. [Article] Resource Assessment Surveys As the Basis for Effective Fisheries Management

  This paper discusses the use of resource assessment surveys as the basis for effective fisheries management drawing on the resource assessment survey of the Arabian Sea coast of Oman. This survey, completed ...

  Citation × Citation Citation Abstract Copy Title: Resource Assessment Surveys As the Basis for Effective Fisheries Management Author: Shallard, Bruce, Al-Oufi, Hamed Said, Bose, Shekar This paper discusses the use of resource assessment surveys as the basis for effective fisheries management drawing on the resource assessment survey of the Arabian Sea coast of Oman. This survey, completed in 2009, has been undertaken in the context of the primary aim of the Oman Ministry of Fisheries Wealth (MFW) being to ensure that fisheries are developed and managed for the advantage of the people of Oman in a manner that is sustainable, maintains biodiversity and is consistent with the Code of Conduct for Responsible Fisheries. The goal of the survey was to provide estimates of the fishable biomass of principal demersal, small pelagic and mesopelagic fish species off the Arabian Sea coast of Oman for ongoing stock assessment of Omani fisheries, to guide development and investment decisions. The MFW is now engaging in the development of a coastal fishing fleet and the assessment of the most appropriate management approach for this fishery. The MFW‟s view is that the resource potential within the country‟s territorial waters (as indicated by the recent fisheries resource assessment survey), limited harvesting capacity, extent of technological advancement, and economic performance of the current traditional fleet, indicates that the current level of exploitation of fish resources is not optimal. Management proposals must therefore be developed in the context of the survey findings. Comparison will also be made with the resource assessment survey completed for the waters of the United Arab Emirates and the subsequent management initiatives developed in Abu Dhabi based on the results of the resource survey. Title: Resource Assessment Surveys As the Basis for Effective Fisheries Management Author: Shallard, Bruce, Al-Oufi, Hamed Said, Bose, Shekar This paper discusses the use of resource assessment surveys as the basis for effective fisheries management drawing on the resource assessment survey of the Arabian Sea coast of Oman. This survey, completed in 2009, has been undertaken in the context of the primary aim of the Oman Ministry of Fisheries Wealth (MFW) being to ensure that fisheries are developed and managed for the advantage of the people of Oman in a manner that is sustainable, maintains biodiversity and is consistent with the Code of Conduct for Responsible Fisheries. The goal of the survey was to provide estimates of the fishable biomass of principal demersal, small pelagic and mesopelagic fish species off the Arabian Sea coast of Oman for ongoing stock assessment of Omani fisheries, to guide development and investment decisions. The MFW is now engaging in the development of a coastal fishing fleet and the assessment of the most appropriate management approach for this fishery. The MFW‟s view is that the resource potential within the country‟s territorial waters (as indicated by the recent fisheries resource assessment survey), limited harvesting capacity, extent of technological advancement, and economic performance of the current traditional fleet, indicates that the current level of exploitation of fish resources is not optimal. Management proposals must therefore be developed in the context of the survey findings. Comparison will also be made with the resource assessment survey completed for the waters of the United Arab Emirates and the subsequent management initiatives developed in Abu Dhabi based on the results of the resource survey. Close

• 10. [Article] The Role of Recreational Fisher Modelling in the Assessment of Management Options for Australia's West Coast Demersal Fishery

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: The Role of Recreational Fisher Modelling in the Assessment of Management Options for Australia's West Coast Demersal Fishery Author: Lindner, Robert, McElroy, Seamus Abstract only. Title: The Role of Recreational Fisher Modelling in the Assessment of Management Options for Australia's West Coast Demersal Fishery Author: Lindner, Robert, McElroy, Seamus Abstract only. Close