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• 1. [Article] Spawning migration of Perch, Perca fluviatilis (L.), in different coastal waters in the Baltic Sea

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Spawning migration of Perch, Perca fluviatilis (L.), in different coastal waters in the Baltic Sea Author: Siddika, Mahruba, Lehtonen, Hannu Research Paper Title: Spawning migration of Perch, Perca fluviatilis (L.), in different coastal waters in the Baltic Sea Author: Siddika, Mahruba, Lehtonen, Hannu Research Paper Close

• 2. [Article] Livelihood Strategies of African Floodplain Fishers Under Hydro- Climatic Changes

  No poster available.

  Citation × Citation Citation Abstract Copy Title: Livelihood Strategies of African Floodplain Fishers Under Hydro- Climatic Changes Author: Sinaba, Famory, Lemoalle, Jacques, Kodio, Amaga, Pierre, Morand No poster available. Title: Livelihood Strategies of African Floodplain Fishers Under Hydro- Climatic Changes Author: Sinaba, Famory, Lemoalle, Jacques, Kodio, Amaga, Pierre, Morand No poster available. Close

• 3. [Article] A Bioeconomic Model of Partial Closures and Habitat Effects - The Case of a Migratory Fish Species

  Research Paper

  Citation × Citation Citation Abstract Copy Title: A Bioeconomic Model of Partial Closures and Habitat Effects - The Case of a Migratory Fish Species Author: Armstrong, Claire W., Reithe, Siv, Armstrong, Richard J. Research Paper Title: A Bioeconomic Model of Partial Closures and Habitat Effects - The Case of a Migratory Fish Species Author: Armstrong, Claire W., Reithe, Siv, Armstrong, Richard J. Research Paper Close

• 4. [Article] Empirical Analysis of the Transboundary Dynamics for Georges Bank Groundfish

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Empirical Analysis of the Transboundary Dynamics for Georges Bank Groundfish Author: Soboil, Mark Lucas, Sutinen, Jon G. Research Paper Title: Empirical Analysis of the Transboundary Dynamics for Georges Bank Groundfish Author: Soboil, Mark Lucas, Sutinen, Jon G. Research Paper Close

• 5. [Article] Small-Scale Fisheries Transition to Sustainable and Responsible Fishing In India - A Micro Level Study

  Small-scale fisheries play an important role in generating employment, income and livelihood to the fisherfolk. It constitutes 81 per cent of the total fisheries sector in India. But, this sector remains ...

  Citation × Citation Citation Abstract Copy Title: Small-Scale Fisheries Transition to Sustainable and Responsible Fishing In India - A Micro Level Study Author: Kanthiah, Pazhani Small-scale fisheries play an important role in generating employment, income and livelihood to the fisherfolk. It constitutes 81 per cent of the total fisheries sector in India. But, this sector remains neglected and the fisherfolk are socially and economically backward. Even after six decades of planned development nearly 62 per cent of the fisherfolk families do not possess crafts. Resource constraints coupled with absence of fishing and other related infrastructures in most of the fishing villages compel fishermen households to migrate to earn their livelihood. Migrant fishermen formed a new village and follow simple method of fishing, which are eco-friendly, economical in the use of fuel and gears. Their responsible fishing is useful for fishing without any by-catches and wastage of marine resources. With this theoretical background, this paper is framed in such a way to analyze the factors that contribute to the transition of small-scale fisheries to sustainable and responsible fishing in Tamil Nadu, India. Factors which hamper small-scale fisheries development have been discussed. The main focus of the study is on the impact of fishermen migration on the socio-economic status of migrants and also the sustainability of fishing operations without class conflict. Policy implications emerging in the light of the findings of the study are also given briefly. Title: Small-Scale Fisheries Transition to Sustainable and Responsible Fishing In India - A Micro Level Study Author: Kanthiah, Pazhani Small-scale fisheries play an important role in generating employment, income and livelihood to the fisherfolk. It constitutes 81 per cent of the total fisheries sector in India. But, this sector remains neglected and the fisherfolk are socially and economically backward. Even after six decades of planned development nearly 62 per cent of the fisherfolk families do not possess crafts. Resource constraints coupled with absence of fishing and other related infrastructures in most of the fishing villages compel fishermen households to migrate to earn their livelihood. Migrant fishermen formed a new village and follow simple method of fishing, which are eco-friendly, economical in the use of fuel and gears. Their responsible fishing is useful for fishing without any by-catches and wastage of marine resources. With this theoretical background, this paper is framed in such a way to analyze the factors that contribute to the transition of small-scale fisheries to sustainable and responsible fishing in Tamil Nadu, India. Factors which hamper small-scale fisheries development have been discussed. The main focus of the study is on the impact of fishermen migration on the socio-economic status of migrants and also the sustainability of fishing operations without class conflict. Policy implications emerging in the light of the findings of the study are also given briefly. Close

• 6. [Article] Applying Parallel Genetic Algorithms to Economic Problems: The Case of Agricultural Land Markets

  This paper elaborates the use of distributed Genetic Algorithms (DGA) to study an artificial land rental market. The study is based on a spatial comparative-static model in which a number of spatially ...

  Citation × Citation Citation Abstract Copy Title: Applying Parallel Genetic Algorithms to Economic Problems: The Case of Agricultural Land Markets Author: Balmann, Alfons, Happe, Kathrin Year: 2001 This paper elaborates the use of distributed Genetic Algorithms (DGA) to study an artificial land rental market. The study is based on a spatial comparative-static model in which a number of spatially ordered agents (farms) compete in an auction for renting land. Each agent’s behavior is determined by a genetic algorithm that is applied to an agent specific population of genomes representing particular bidding strategies. Agents interact directly through a migration mechanism that allows to spread renting strategies across the population of agents as well as indirectly over the rental market. Two market constellations are considered and different simulations with a variety of parameter constellations (migration rate, placement of farms, etc.) are run: First, a situation of limited market access is defined. A series of simulation experiments shows that for this scenario the DGA generates results that fit comparative static equilibrium conditions like allocative efficiency and zero-profits. Second, in a limited market access scenario, only under very special conditions the DGA generates results that comply with oligopolistic behavior. The results of the two scenarios are analyzed and discussed as to the influence of the DGA procedure itself and a possible economic and game theoretic interpretation. Title: Applying Parallel Genetic Algorithms to Economic Problems: The Case of Agricultural Land Markets Author: Balmann, Alfons, Happe, Kathrin Year: 2001 This paper elaborates the use of distributed Genetic Algorithms (DGA) to study an artificial land rental market. The study is based on a spatial comparative-static model in which a number of spatially ordered agents (farms) compete in an auction for renting land. Each agent’s behavior is determined by a genetic algorithm that is applied to an agent specific population of genomes representing particular bidding strategies. Agents interact directly through a migration mechanism that allows to spread renting strategies across the population of agents as well as indirectly over the rental market. Two market constellations are considered and different simulations with a variety of parameter constellations (migration rate, placement of farms, etc.) are run: First, a situation of limited market access is defined. A series of simulation experiments shows that for this scenario the DGA generates results that fit comparative static equilibrium conditions like allocative efficiency and zero-profits. Second, in a limited market access scenario, only under very special conditions the DGA generates results that comply with oligopolistic behavior. The results of the two scenarios are analyzed and discussed as to the influence of the DGA procedure itself and a possible economic and game theoretic interpretation. Close

• 7. [Article] Who pay the cost of the reduction of the large scale purse seine vessels?

  Abstract Only

  Citation × Citation Citation Abstract Copy Title: Who pay the cost of the reduction of the large scale purse seine vessels? Author: Shibata, Takashi Abstract Only Title: Who pay the cost of the reduction of the large scale purse seine vessels? Author: Shibata, Takashi Abstract Only Close

• 8. [Article] Who pays the cost of the reduction of the large scale purse seine vessels?

  Abstract Only

  Citation × Citation Citation Abstract Copy Title: Who pays the cost of the reduction of the large scale purse seine vessels? Author: Shibata, Takashi Abstract Only Title: Who pays the cost of the reduction of the large scale purse seine vessels? Author: Shibata, Takashi Abstract Only Close

• 9. [Article] Influence of El-Nino Southern Oscillation on Pelagic Fisheries (Sardinella lemuru) in Bali Waters (1995-1999)

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Influence of El-Nino Southern Oscillation on Pelagic Fisheries (Sardinella lemuru) in Bali Waters (1995-1999) Author: Bernawis, Lamona Irmudyawati, Yoshida, Jiro Research Paper Title: Influence of El-Nino Southern Oscillation on Pelagic Fisheries (Sardinella lemuru) in Bali Waters (1995-1999) Author: Bernawis, Lamona Irmudyawati, Yoshida, Jiro Research Paper Close

• 10. [Article] Marine Reserves: a Closer Look at What They Can Accomplish

  The presents a theoretical analysis of the operation of a commercial fishery in the presence of marine reserves. The sustainable yield and revenue curves for reserves are derived and compared to the analogous ...

  Citation × Citation Citation Abstract Copy Title: Marine Reserves: a Closer Look at What They Can Accomplish Author: Anderson, Lee G. Year: 2001 The presents a theoretical analysis of the operation of a commercial fishery in the presence of marine reserves. The sustainable yield and revenue curves for reserves are derived and compared to the analogous curves with no reserves. It is shown that reserves will always reduce the sustainable harvest for any total stock size but in certain, but not all cases, they can provide a positive minimum possible stock size. The effects of different reserve sizes and speeds at which migration takes place on economic and boilogical variables are discussed. It is shown that marine reserves and TACs can both achieve a specific equilibrium biomass level, but they will have different biological and economic effects. Title: Marine Reserves: a Closer Look at What They Can Accomplish Author: Anderson, Lee G. Year: 2001 The presents a theoretical analysis of the operation of a commercial fishery in the presence of marine reserves. The sustainable yield and revenue curves for reserves are derived and compared to the analogous curves with no reserves. It is shown that reserves will always reduce the sustainable harvest for any total stock size but in certain, but not all cases, they can provide a positive minimum possible stock size. The effects of different reserve sizes and speeds at which migration takes place on economic and boilogical variables are discussed. It is shown that marine reserves and TACs can both achieve a specific equilibrium biomass level, but they will have different biological and economic effects. Close

• 11. [Article] Value Chain Structure and Performance in the Salted Cod Markets

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Value Chain Structure and Performance in the Salted Cod Markets Author: Trondsen, Torbjorn Abstract only. Title: Value Chain Structure and Performance in the Salted Cod Markets Author: Trondsen, Torbjorn Abstract only. Close

• 12. [Article] Risk and Uncertainty in Yucatán (México) Fisheries Sector: Gradual Transition to the Third Economy Through tourism Development

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Risk and Uncertainty in Yucatán (México) Fisheries Sector: Gradual Transition to the Third Economy Through tourism Development Author: Fraga, Julia Abstract only. Title: Risk and Uncertainty in Yucatán (México) Fisheries Sector: Gradual Transition to the Third Economy Through tourism Development Author: Fraga, Julia Abstract only. Close

• 13. [Article] Stability of International Fisheries Agreements: Implications of Non-Market Benefits and the Country of Origin

  Salmon is an anadromous species that during its feeding and spawning migrations is sought after catch for commercial and recreational fisheries. The management of salmon fisheries is complicated by the ...

  Citation × Citation Citation Abstract Copy Title: Stability of International Fisheries Agreements: Implications of Non-Market Benefits and the Country of Origin Author: Levontin, Polina, Kulmala, Soile, Laukkanen, Marita, Lindroos, Marko, Romakkaniemi, Atso, Nieminen, Emmi, Parkkila, Katja, Pintassilgo, Pedro, Pulkkinen, Henni Salmon is an anadromous species that during its feeding and spawning migrations is sought after catch for commercial and recreational fisheries. The management of salmon fisheries is complicated by the combination of mixed and single stock fisheries. Thus, the country of origin has sovereign control over harvest of a salmon stock only at the last steps of the gauntlet. This paper addresses the stability of an international fisheries agreement on the Baltic salmon. This setting is modeled through a coalition game in the partition function form with four asymmetric players. Countries payoffs depend both on commercial fishery’s profits and net benefits from recreational harvest. Moreover, the country of origin must ensure that each of the salmon stocks achieve or maintain a sustainable size. The economic sub-model is calibrated using commercial fisheries statistics and existing non-market valuation studies. The underlying population dynamics model accounts for 15 salmon stocks and it is used in the actual stock assessment. The results indicate that by considering economic aspects of recreational fisheries it is possible to stabilize the grand coalition. However, the cooperative strategies of the grand coalition do not ensure biologically sound harvesting of all salmon stocks. Title: Stability of International Fisheries Agreements: Implications of Non-Market Benefits and the Country of Origin Author: Levontin, Polina, Kulmala, Soile, Laukkanen, Marita, Lindroos, Marko, Romakkaniemi, Atso, Nieminen, Emmi, Parkkila, Katja, Pintassilgo, Pedro, Pulkkinen, Henni Salmon is an anadromous species that during its feeding and spawning migrations is sought after catch for commercial and recreational fisheries. The management of salmon fisheries is complicated by the combination of mixed and single stock fisheries. Thus, the country of origin has sovereign control over harvest of a salmon stock only at the last steps of the gauntlet. This paper addresses the stability of an international fisheries agreement on the Baltic salmon. This setting is modeled through a coalition game in the partition function form with four asymmetric players. Countries payoffs depend both on commercial fishery’s profits and net benefits from recreational harvest. Moreover, the country of origin must ensure that each of the salmon stocks achieve or maintain a sustainable size. The economic sub-model is calibrated using commercial fisheries statistics and existing non-market valuation studies. The underlying population dynamics model accounts for 15 salmon stocks and it is used in the actual stock assessment. The results indicate that by considering economic aspects of recreational fisheries it is possible to stabilize the grand coalition. However, the cooperative strategies of the grand coalition do not ensure biologically sound harvesting of all salmon stocks. Close

• 14. [Article] Climate, Competition and The Management of Shared Fish Stocks

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Climate, Competition and The Management of Shared Fish Stocks Author: Miller, Kathleen, Munro, Gordon R., Bjorndal, Trond Research Paper Title: Climate, Competition and The Management of Shared Fish Stocks Author: Miller, Kathleen, Munro, Gordon R., Bjorndal, Trond Research Paper Close

• 15. [Article] Toward a Positive Feedback between Fish Abundance and Dense Forest to Enhance Biodiversity: Responsible Fisheries from a Viewpoint of Nutrient Cycling

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Toward a Positive Feedback between Fish Abundance and Dense Forest to Enhance Biodiversity: Responsible Fisheries from a Viewpoint of Nutrient Cycling Author: Murota, Takeshi Research Paper Title: Toward a Positive Feedback between Fish Abundance and Dense Forest to Enhance Biodiversity: Responsible Fisheries from a Viewpoint of Nutrient Cycling Author: Murota, Takeshi Research Paper Close

• 16. [Article] Marine Reserves and Quotas as Fisheries Management Tools: When does Marine Reserve Creation Pay?

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Marine Reserves and Quotas as Fisheries Management Tools: When does Marine Reserve Creation Pay? Author: Reithe, Siv Research Paper Title: Marine Reserves and Quotas as Fisheries Management Tools: When does Marine Reserve Creation Pay? Author: Reithe, Siv Research Paper Close

• 17. [Article] Problems and Prospects of Small-Scale Fisheries Development in India

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Problems and Prospects of Small-Scale Fisheries Development in India Author: Kanthiah, Pazhani Abstract only. Title: Problems and Prospects of Small-Scale Fisheries Development in India Author: Kanthiah, Pazhani Abstract only. Close

• 18. [Article] Maximizing economic yield from a plankton feeding fish population on high latitudes

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Maximizing economic yield from a plankton feeding fish population on high latitudes Author: Eide, Arne, Flaaten, Ola, Henriksen, Edgar Abstract only. Title: Maximizing economic yield from a plankton feeding fish population on high latitudes Author: Eide, Arne, Flaaten, Ola, Henriksen, Edgar Abstract only. Close

• 19. [Article] Climate Change and Fishery Governance in the Pacific Northwest US: the Case of Columbia River Basin Salmon

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Climate Change and Fishery Governance in the Pacific Northwest US: the Case of Columbia River Basin Salmon Author: Hanna, Susan Abstract only. Title: Climate Change and Fishery Governance in the Pacific Northwest US: the Case of Columbia River Basin Salmon Author: Hanna, Susan Abstract only. Close

• 20. [Article] Climate, Uncertainty and the Pacific Salmon Treaty: Insights on the Harvest Management Game

  Pacific Salmon are anadromous fish that cross state and international boundaries in their oceanic migrations. Fish spawned in the rivers of one jurisdiction are vulnerable to harvest in other jurisdictions. ...

  Citation × Citation Citation Abstract Copy Title: Climate, Uncertainty and the Pacific Salmon Treaty: Insights on the Harvest Management Game Author: Munro, Gordon, Tyedmers, Peter, McKelvey, Robert, Miller, Kathleen Year: 2001 Pacific Salmon are anadromous fish that cross state and international boundaries in their oceanic migrations. Fish spawned in the rivers of one jurisdiction are vulnerable to harvest in other jurisdictions. The rocky history of attempts by the United States and Canada to cooperatively manage their respective salmon harvests suggests that environmental variability may complicate the management of such shared resources. In recent years, an extended breakdown in cooperation was fueled by strongly divergent trends in Alaskan and southern salmon abundance, and a consequent change in the balance of each nation s interceptions of salmon spawned in the other nation s rivers. While several natural and anthropogenic factors contributed to these trends, there is considerable evidence that changing ocean conditions played a significant role. The period of high productivity in Alaska contributed to increased Alaskan interceptions of B.C. salmon at a time when Pacific Northwest coho and chinook could least withstand retaliatory actions on the part of the Canadian fleet. Only recently, has the mounting crisis led to a fundamental shift in the approach taken by the two nations to determine their respective salmon-harvest shares. On June 30, 1999, Canada and the U.S. signed an agreement which, if successfully implemented, may lay the groundwork for a more sustainable cooperative management regime. However, there are many unanswered questions regarding the viability and sustainability of the new Pacific Salmon Treaty Agreement. This paper draws lessons from the recent period of turmoil to identify strengths and weaknesses in the new abundance-based management approach, and to suggest avenues for further negotiations to secure more rational management of Pacific salmon resources. Title: Climate, Uncertainty and the Pacific Salmon Treaty: Insights on the Harvest Management Game Author: Munro, Gordon, Tyedmers, Peter, McKelvey, Robert, Miller, Kathleen Year: 2001 Pacific Salmon are anadromous fish that cross state and international boundaries in their oceanic migrations. Fish spawned in the rivers of one jurisdiction are vulnerable to harvest in other jurisdictions. The rocky history of attempts by the United States and Canada to cooperatively manage their respective salmon harvests suggests that environmental variability may complicate the management of such shared resources. In recent years, an extended breakdown in cooperation was fueled by strongly divergent trends in Alaskan and southern salmon abundance, and a consequent change in the balance of each nation s interceptions of salmon spawned in the other nation s rivers. While several natural and anthropogenic factors contributed to these trends, there is considerable evidence that changing ocean conditions played a significant role. The period of high productivity in Alaska contributed to increased Alaskan interceptions of B.C. salmon at a time when Pacific Northwest coho and chinook could least withstand retaliatory actions on the part of the Canadian fleet. Only recently, has the mounting crisis led to a fundamental shift in the approach taken by the two nations to determine their respective salmon-harvest shares. On June 30, 1999, Canada and the U.S. signed an agreement which, if successfully implemented, may lay the groundwork for a more sustainable cooperative management regime. However, there are many unanswered questions regarding the viability and sustainability of the new Pacific Salmon Treaty Agreement. This paper draws lessons from the recent period of turmoil to identify strengths and weaknesses in the new abundance-based management approach, and to suggest avenues for further negotiations to secure more rational management of Pacific salmon resources. Close