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• 41. [Article] The mixed bless of modern fishing technology

  This paper formulates a simple biomass growth model of a fishery. The property rights regime is of the unregulated local common property type with a fixed number of fishermen and where the fish stock is ...

  Citation × Citation Citation Abstract Copy Title: The mixed bless of modern fishing technology Author: Skonhoft, Anders This paper formulates a simple biomass growth model of a fishery. The property rights regime is of the unregulated local common property type with a fixed number of fishermen and where the fish stock is exploited in a myopic profit-maximizing manner. Within this resource management setting it is demonstrated that more modern fishing technology has a two-sided profitability effect, and where the direct, short-run, positive effect is counterbalanced by a negative, long-run, indirect effect that slows down the stock growth and increases the harvesting costs. In the steady state, it is shown that more modern technology dissipates the rent under already high exploitation pressure, while the opposite occurs if the fish stock is initially little, or moderately, exploited. This is the mixed bless of modern fishing technology. Title: The mixed bless of modern fishing technology Author: Skonhoft, Anders This paper formulates a simple biomass growth model of a fishery. The property rights regime is of the unregulated local common property type with a fixed number of fishermen and where the fish stock is exploited in a myopic profit-maximizing manner. Within this resource management setting it is demonstrated that more modern fishing technology has a two-sided profitability effect, and where the direct, short-run, positive effect is counterbalanced by a negative, long-run, indirect effect that slows down the stock growth and increases the harvesting costs. In the steady state, it is shown that more modern technology dissipates the rent under already high exploitation pressure, while the opposite occurs if the fish stock is initially little, or moderately, exploited. This is the mixed bless of modern fishing technology. Close

• 42. [Article] Analysis of Demand for Fish Consumed at Home in Thailand

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Analysis of Demand for Fish Consumed at Home in Thailand Author: Dey, Madan Mohan, Piumsombun, Somying Research Paper Title: Analysis of Demand for Fish Consumed at Home in Thailand Author: Dey, Madan Mohan, Piumsombun, Somying Research Paper Close

• 43. [Article] Economic Results of the Australian National Recreational Fishing Survey

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Economic Results of the Australian National Recreational Fishing Survey Author: Campbell, David Research Paper Title: Economic Results of the Australian National Recreational Fishing Survey Author: Campbell, David Research Paper Close

• 44. [Article] Age, Period, of Birth Cohort: What Determines Demographic Differences in Seafood Consumption?

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Age, Period, of Birth Cohort: What Determines Demographic Differences in Seafood Consumption? Author: Lund, Eiliv, Trondsen, Torbjorn, Scholderer, Joachim Research Paper Title: Age, Period, of Birth Cohort: What Determines Demographic Differences in Seafood Consumption? Author: Lund, Eiliv, Trondsen, Torbjorn, Scholderer, Joachim Research Paper Close

• 45. [Article] Can Current Supply Figures Support the Nutritional Recommendation of Fish Consumption in Iran? A Case-Study of the Challenges in Front of A Nutrition Policy

  No poster available.

  Citation × Citation Citation Abstract Copy Title: Can Current Supply Figures Support the Nutritional Recommendation of Fish Consumption in Iran? A Case-Study of the Challenges in Front of A Nutrition Policy Author: Houshiar-rad, Anahita, Rashidi, Arash, Davari, Azadeh No poster available. Title: Can Current Supply Figures Support the Nutritional Recommendation of Fish Consumption in Iran? A Case-Study of the Challenges in Front of A Nutrition Policy Author: Houshiar-rad, Anahita, Rashidi, Arash, Davari, Azadeh No poster available. Close

• 46. [Article] Why and When Joint 'Exploitation-Ecosystem Dynamics' Models Should be Used

  Fisheries models are generally built to assess the dynamics of a resource with a given fishing mortality which level can be decided by some “decision maker” and/or which can be an observed process, e.g. ...

  Citation × Citation Citation Abstract Copy Title: Why and When Joint 'Exploitation-Ecosystem Dynamics' Models Should be Used Author: Laloë, Francis Fisheries models are generally built to assess the dynamics of a resource with a given fishing mortality which level can be decided by some “decision maker” and/or which can be an observed process, e.g. times series proportional to some observed values of fishing effort. In these cases, the resource dynamics is represented “conditionally to” fishing mortality. This mortality must be therefore primarily defined in reference to the definition of the resource Such models can be used to make stock assessment from historical data and to find which fishing mortality values could lead to some objective that can be some optimal or acceptable situation. If the values of fishing mortality can be decided by some unique institution, this knowledge of “best or acceptable mortality values” is of great interest for decision support. If not, it becomes insufficient to identify which decision of which institution could lead to obtain some given set of fishing mortalities. This situation may arise if there is a high number of fishing units belonging to various fishing fleets that may decide to generate fishing mortalities distributions among several available possibilities, according to their own interest. Examples of such problems will be presented from a Senegalese case study where several fishing fleets harvest on a common multispecies resource. Some other examples will be given from case studies identified in the context of the program ECOST with the development of a generic model which represents the joint dynamics of fishing activity and resource. Title: Why and When Joint 'Exploitation-Ecosystem Dynamics' Models Should be Used Author: Laloë, Francis Fisheries models are generally built to assess the dynamics of a resource with a given fishing mortality which level can be decided by some “decision maker” and/or which can be an observed process, e.g. times series proportional to some observed values of fishing effort. In these cases, the resource dynamics is represented “conditionally to” fishing mortality. This mortality must be therefore primarily defined in reference to the definition of the resource Such models can be used to make stock assessment from historical data and to find which fishing mortality values could lead to some objective that can be some optimal or acceptable situation. If the values of fishing mortality can be decided by some unique institution, this knowledge of “best or acceptable mortality values” is of great interest for decision support. If not, it becomes insufficient to identify which decision of which institution could lead to obtain some given set of fishing mortalities. This situation may arise if there is a high number of fishing units belonging to various fishing fleets that may decide to generate fishing mortalities distributions among several available possibilities, according to their own interest. Examples of such problems will be presented from a Senegalese case study where several fishing fleets harvest on a common multispecies resource. Some other examples will be given from case studies identified in the context of the program ECOST with the development of a generic model which represents the joint dynamics of fishing activity and resource. Close

• 47. [Article] Spatial Allocation of Fishing Effort Discriminated By Fishing Gear in A Multi-Species Fleet

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Spatial Allocation of Fishing Effort Discriminated By Fishing Gear in A Multi-Species Fleet Author: Bello, Javier, Salas, Silvia, Monroy, Carmen Abstract only. Title: Spatial Allocation of Fishing Effort Discriminated By Fishing Gear in A Multi-Species Fleet Author: Bello, Javier, Salas, Silvia, Monroy, Carmen Abstract only. Close

• 48. [Article] The Role of Fish-Markets in the Icelandic Value Chain of Cod

  The two main pillars of the Icelandic fishing industry are the large vertically integrated fishing companies and the SMEs, specialised in fishing, producing or marketing. In order to understand how they ...

  Citation × Citation Citation Abstract Copy Title: The Role of Fish-Markets in the Icelandic Value Chain of Cod Author: Klemensson, Ólafur, Gestsson, Helgi, Knútsson, Ögmundur The two main pillars of the Icelandic fishing industry are the large vertically integrated fishing companies and the SMEs, specialised in fishing, producing or marketing. In order to understand how they are able to function side by side and at the same time secure a relatively high value added for the domestic part of the Icelandic value chain of cod, a closer look at the functions and operations of the Icelandic fish markets is needed. In the authors’ recent studies on structural changes in the fisheries value chain in Iceland from 1990 to 2007, six dissimilar main operational strategies were identified. Common to all of those was the need for an efficient use of the Icelandic fish markets. Three distinctive effects of fish markets were identified: firstly, specialisation, where large and small fisheries companies use the fish markets to swap or sell all other species than needed in their specialised production (usually to SMEs producers specializing in those species); secondly, to gain stability in sourcing, where companies source raw material from the fish markets and top-up when there is lack of certain species (or sizes) from the companies’ own boats and; thirdly, the market driven function or effect (market orientated value creation). To study this facilitating and supporting effect of fish markets on the on the progress of the Icelandic fisheries sector further, the focus is now the importance of fish markets from the time of their establishment in Iceland in 1987. The research is based on semi-structured and in-depth interviews with managers of a number of Icelandic fishing and processing companies and is a part of an ongoing research on the value chain structure and on organisational- and productivity changes in the Icelandic fisheries sector. Title: The Role of Fish-Markets in the Icelandic Value Chain of Cod Author: Klemensson, Ólafur, Gestsson, Helgi, Knútsson, Ögmundur The two main pillars of the Icelandic fishing industry are the large vertically integrated fishing companies and the SMEs, specialised in fishing, producing or marketing. In order to understand how they are able to function side by side and at the same time secure a relatively high value added for the domestic part of the Icelandic value chain of cod, a closer look at the functions and operations of the Icelandic fish markets is needed. In the authors’ recent studies on structural changes in the fisheries value chain in Iceland from 1990 to 2007, six dissimilar main operational strategies were identified. Common to all of those was the need for an efficient use of the Icelandic fish markets. Three distinctive effects of fish markets were identified: firstly, specialisation, where large and small fisheries companies use the fish markets to swap or sell all other species than needed in their specialised production (usually to SMEs producers specializing in those species); secondly, to gain stability in sourcing, where companies source raw material from the fish markets and top-up when there is lack of certain species (or sizes) from the companies’ own boats and; thirdly, the market driven function or effect (market orientated value creation). To study this facilitating and supporting effect of fish markets on the on the progress of the Icelandic fisheries sector further, the focus is now the importance of fish markets from the time of their establishment in Iceland in 1987. The research is based on semi-structured and in-depth interviews with managers of a number of Icelandic fishing and processing companies and is a part of an ongoing research on the value chain structure and on organisational- and productivity changes in the Icelandic fisheries sector. Close

• 49. [Article] Fresh Fish Attributes and Consumers’ Preference Ranking in Rural and Urban Households in Ondo State, Nigeria

  Presentation

  Citation × Citation Citation Abstract Copy Title: Fresh Fish Attributes and Consumers’ Preference Ranking in Rural and Urban Households in Ondo State, Nigeria Author: Mafimisebi, Ojuotimi, Mafimisebi, Taiwo, Osuntunde, A.O Presentation Title: Fresh Fish Attributes and Consumers’ Preference Ranking in Rural and Urban Households in Ondo State, Nigeria Author: Mafimisebi, Ojuotimi, Mafimisebi, Taiwo, Osuntunde, A.O Presentation Close

• 50. [Article] Modeling fishing decisions with spatially explicit agent-based models

  Abstract Only

  Citation × Citation Citation Abstract Copy Title: Modeling fishing decisions with spatially explicit agent-based models Author: Die, David, Saul, Steven Abstract Only Title: Modeling fishing decisions with spatially explicit agent-based models Author: Die, David, Saul, Steven Abstract Only Close