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• 1. [Article] Individual Habitat Quotas for Fisheries

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Individual Habitat Quotas for Fisheries Author: Holland, Daniel S., Schnier, Kurt E. Research Paper Title: Individual Habitat Quotas for Fisheries Author: Holland, Daniel S., Schnier, Kurt E. Research Paper Close

• 2. [Article] A Bioeconomic Model of Fishery-Habitat Impacts

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: A Bioeconomic Model of Fishery-Habitat Impacts Author: Kahui, Viktoria, Armstrong, Claire Abstract only. Title: A Bioeconomic Model of Fishery-Habitat Impacts Author: Kahui, Viktoria, Armstrong, Claire Abstract only. Close

• 3. [Article] Habitat-destructive fishing practices

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Habitat-destructive fishing practices Author: Mikkelsen, Eirik Abstract only. Title: Habitat-destructive fishing practices Author: Mikkelsen, Eirik Abstract only. Close

• 4. [Article] Incorporating Habitat Dynamics into Bioeconomic Model of Fishery. Application to Artificial Reefs

  In this paper the emphasis is put on an important aspect of renewable resource use that was disregarded until now. It is the evolution of environmental carrying capacity which is traditionally interpreted ...

  Citation × Citation Citation Abstract Copy Title: Incorporating Habitat Dynamics into Bioeconomic Model of Fishery. Application to Artificial Reefs Author: Cartigny, Pierre, Ami, Dominique, Udumyan, Narine In this paper the emphasis is put on an important aspect of renewable resource use that was disregarded until now. It is the evolution of environmental carrying capacity which is traditionally interpreted as a maximal population level that can be supported by the environment (or by habitats of which it consists). Hence we adapt the Gordon-Schaefer model with constant carrying capacity by incorporating time-dependent carrying capacity that determines the state of habitats. They are subject to some biological processes (habitat rehabilitation) as well as to human aggressions (in particular habitat degradation due to fishing). Based on the developed model, we reassess the recommendations considered as a benchmark for resource managers until recently. Under simple hypotheses on the form of habitat (carrying capacity) dynamics, the current study has shown the importance of the latter for the design of management tools. When dynamic patterns of habitats are not taken into account, fishery recommendations based on Gordon-Schaefer model can be aberrant and lead to the collapse of the fishery. The presented model allows not only to enrich the design of management tools but also to assess the performance of artificial reefs, a promising ecosystem-based tool widely used in some coastal areas. The economic benefits of artificial reefs are still not well studied and represent a challenge to take up. Since artificial reefs are conceived as replacement for natural habitats, they assume the same role as these latter. Therefore the structure of our model seems appropriate to evaluate this particular management tool. Title: Incorporating Habitat Dynamics into Bioeconomic Model of Fishery. Application to Artificial Reefs Author: Cartigny, Pierre, Ami, Dominique, Udumyan, Narine In this paper the emphasis is put on an important aspect of renewable resource use that was disregarded until now. It is the evolution of environmental carrying capacity which is traditionally interpreted as a maximal population level that can be supported by the environment (or by habitats of which it consists). Hence we adapt the Gordon-Schaefer model with constant carrying capacity by incorporating time-dependent carrying capacity that determines the state of habitats. They are subject to some biological processes (habitat rehabilitation) as well as to human aggressions (in particular habitat degradation due to fishing). Based on the developed model, we reassess the recommendations considered as a benchmark for resource managers until recently. Under simple hypotheses on the form of habitat (carrying capacity) dynamics, the current study has shown the importance of the latter for the design of management tools. When dynamic patterns of habitats are not taken into account, fishery recommendations based on Gordon-Schaefer model can be aberrant and lead to the collapse of the fishery. The presented model allows not only to enrich the design of management tools but also to assess the performance of artificial reefs, a promising ecosystem-based tool widely used in some coastal areas. The economic benefits of artificial reefs are still not well studied and represent a challenge to take up. Since artificial reefs are conceived as replacement for natural habitats, they assume the same role as these latter. Therefore the structure of our model seems appropriate to evaluate this particular management tool. Close

• 5. [Article] Fishing induced environmental change and the value of biodiversity in a multi-species fishery

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Fishing induced environmental change and the value of biodiversity in a multi-species fishery Author: Akpalu, Wisdom Abstract only. Title: Fishing induced environmental change and the value of biodiversity in a multi-species fishery Author: Akpalu, Wisdom Abstract only. Close

• 6. [Article] Fish, Floods, and Farmers: The Joint Production of Ecosystem Services on a Working Landscape

  presentation

  Citation × Citation Citation Abstract Copy Title: Fish, Floods, and Farmers: The Joint Production of Ecosystem Services on a Working Landscape Author: Garnache, Cloe presentation Title: Fish, Floods, and Farmers: The Joint Production of Ecosystem Services on a Working Landscape Author: Garnache, Cloe presentation Close

• 7. [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

• 8. [Article] Cold Water Coral - Fisheries Interactions: Bioeconomic modelling comparing Norway & Iceland's redfish fisheries

  Abstract Only

  Citation × Citation Citation Abstract Copy Title: Cold Water Coral - Fisheries Interactions: Bioeconomic modelling comparing Norway & Iceland's redfish fisheries Author: Foley, Naomi, Armstong, Claire Abstract Only Title: Cold Water Coral - Fisheries Interactions: Bioeconomic modelling comparing Norway & Iceland's redfish fisheries Author: Foley, Naomi, Armstong, Claire Abstract Only Close

• 9. [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

• 10. [Article] The Economics of Conservation Targeting Strategies

  This is an abbreviated version of a paper published in the American Journal of Agricultural Economics, Vol. 82 #2, pages 400-413.

  Citation × Citation Citation Abstract Copy Title: The Economics of Conservation Targeting Strategies Author: Boggess, William G., Wu, JunJie, Adams, Richard M. Year: 2001 This is an abbreviated version of a paper published in the American Journal of Agricultural Economics, Vol. 82 #2, pages 400-413. Title: The Economics of Conservation Targeting Strategies Author: Boggess, William G., Wu, JunJie, Adams, Richard M. Year: 2001 This is an abbreviated version of a paper published in the American Journal of Agricultural Economics, Vol. 82 #2, pages 400-413. Close

• 11. [Article] Environmental Factors and Natural Resource Stock: Atlantic Herring Case

  Herring is an important stock as bait for lobster fisheries and a component of the food web of the Northwest Atlantic Ocean. However, herring is very vulnerable to environmental variables such as temperature, ...

  Citation × Citation Citation Abstract Copy Title: Environmental Factors and Natural Resource Stock: Atlantic Herring Case Author: Cho, Jung-Hee, Gates, John M. Year: 2001 Herring is an important stock as bait for lobster fisheries and a component of the food web of the Northwest Atlantic Ocean. However, herring is very vulnerable to environmental variables such as temperature, food supply, and to the type of sediment on the bottom floor. Egg and larval stage herring are hypothesized to be very sensitive to low temperatures. This paper will analyze the correlation between temperature and two year-old recruitment stock, using satellite sea surface temperature (SST) data and stock size data from Northeast Fishery Science Center. Temperature is measured for specific areas that are defined as Essential Fish Habitat (EFH) designated habitat for Atlantic herring eggs. The preliminary results suggest that including environmental factors is necessary to understand the cycle of fluctuating stock and is a necessary variable in the production model for a fishery. Title: Environmental Factors and Natural Resource Stock: Atlantic Herring Case Author: Cho, Jung-Hee, Gates, John M. Year: 2001 Herring is an important stock as bait for lobster fisheries and a component of the food web of the Northwest Atlantic Ocean. However, herring is very vulnerable to environmental variables such as temperature, food supply, and to the type of sediment on the bottom floor. Egg and larval stage herring are hypothesized to be very sensitive to low temperatures. This paper will analyze the correlation between temperature and two year-old recruitment stock, using satellite sea surface temperature (SST) data and stock size data from Northeast Fishery Science Center. Temperature is measured for specific areas that are defined as Essential Fish Habitat (EFH) designated habitat for Atlantic herring eggs. The preliminary results suggest that including environmental factors is necessary to understand the cycle of fluctuating stock and is a necessary variable in the production model for a fishery. Close

• 12. [Article] Search and Destroy: a Bioeconomic Model of Orange Roughly Fisheries in New Zealand

  Abstract Only

  Citation × Citation Citation Abstract Copy Title: Search and Destroy: a Bioeconomic Model of Orange Roughly Fisheries in New Zealand Author: Kahui, Viktoria, Armstrong, Claire Abstract Only Title: Search and Destroy: a Bioeconomic Model of Orange Roughly Fisheries in New Zealand Author: Kahui, Viktoria, Armstrong, Claire Abstract Only Close

• 13. [Article] A New Approach to Fisheries Management in Western Australia

  Research Paper

  Citation × Citation Citation Abstract Copy Title: A New Approach to Fisheries Management in Western Australia Author: Brayfod, Heather Research Paper Title: A New Approach to Fisheries Management in Western Australia Author: Brayfod, Heather Research Paper Close

• 14. [Article] Arctic Fisheries: Potential Management Issues and Opportunities

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Arctic Fisheries: Potential Management Issues and Opportunities Author: Millerd, Frank Abstract only. Title: Arctic Fisheries: Potential Management Issues and Opportunities Author: Millerd, Frank Abstract only. Close

• 15. [Article] Consumer Preferences for Coastal Restoration - Ecosystem Services and individualized Pricing in An Experimental Auction Market

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Consumer Preferences for Coastal Restoration - Ecosystem Services and individualized Pricing in An Experimental Auction Market Author: Smith, Elizabeth, Swallow, Stephen Abstract only. Title: Consumer Preferences for Coastal Restoration - Ecosystem Services and individualized Pricing in An Experimental Auction Market Author: Smith, Elizabeth, Swallow, Stephen Abstract only. Close

• 16. [Article] Climate Change and Fisheries in Bangladesh: Impacts and Adaptations in The Context of Marginal and Poor Fishers

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Climate Change and Fisheries in Bangladesh: Impacts and Adaptations in The Context of Marginal and Poor Fishers Author: Ahmed, Md. Muzaffar Abstract only. Title: Climate Change and Fisheries in Bangladesh: Impacts and Adaptations in The Context of Marginal and Poor Fishers Author: Ahmed, Md. Muzaffar Abstract only. Close

• 17. [Article] Climate and Fisheries: Costs and Benefits of Change

  Many records provide the bases for a clearer understanding of the roles of climate regime shifts and short-term perturbations in ecosystem dynamics, hence fisheries responses. Too few have taken the long ...

  Citation × Citation Citation Abstract Copy Title: Climate and Fisheries: Costs and Benefits of Change Author: Klyashtorin, Leonid, Sharp, Gary D., Goodridge, James Year: 2001 Many records provide the bases for a clearer understanding of the roles of climate regime shifts and short-term perturbations in ecosystem dynamics, hence fisheries responses. Too few have taken the long view of the role of humans in this "Grand Fugue". As one of many predators, it is imperative that humans begin to understand that our various activities are subject to basic ecological principles, such as the concepts of growth limitations imposed by scarcities and habitat debilitations. Most of human history (evolution, growth, colonizations, displacements, resource scarcity, competition for resources) are direct consequences of normal, natural climate fluctuations, and local, regional and global ecological responses. Early fisheries were subsistence levels, with some situations where fishing communities bartered or traded for goods from adjacent highlands or forest cultures. We have also become extremely vulnerable to any persistent climate changes. Following the Medieval Warm period (~900-1180), the onset of the Little Ice Age (LIA) brought changes in regional productivity, disease, and death that began the global transition from Feudal society to the "pay as you go" economics that now dominate the world's major economies. Over the recent two to three centuries humans have swarmed over the remaining terrain, and spread out onto the seas. Modern history relates the continuous growth, expansion and generalized superposition of industrial fisheries onto older coastal subsistence communities, initiating extensive competition, overexploitation, and with resultant dwindling resources and habitat destruction. I have started a Timeline of Fisheries Development that provides a framework of information upon which these facts are derived: <.http://www.monterey.edu/faculty/SharpGary/world/FisheryTimeline.html> I will continue to develop the Timeline, so that others might learn how humans resolve the issues of complex aquatic ecosystems, limited resource sharing, or not. Title: Climate and Fisheries: Costs and Benefits of Change Author: Klyashtorin, Leonid, Sharp, Gary D., Goodridge, James Year: 2001 Many records provide the bases for a clearer understanding of the roles of climate regime shifts and short-term perturbations in ecosystem dynamics, hence fisheries responses. Too few have taken the long view of the role of humans in this "Grand Fugue". As one of many predators, it is imperative that humans begin to understand that our various activities are subject to basic ecological principles, such as the concepts of growth limitations imposed by scarcities and habitat debilitations. Most of human history (evolution, growth, colonizations, displacements, resource scarcity, competition for resources) are direct consequences of normal, natural climate fluctuations, and local, regional and global ecological responses. Early fisheries were subsistence levels, with some situations where fishing communities bartered or traded for goods from adjacent highlands or forest cultures. We have also become extremely vulnerable to any persistent climate changes. Following the Medieval Warm period (~900-1180), the onset of the Little Ice Age (LIA) brought changes in regional productivity, disease, and death that began the global transition from Feudal society to the "pay as you go" economics that now dominate the world's major economies. Over the recent two to three centuries humans have swarmed over the remaining terrain, and spread out onto the seas. Modern history relates the continuous growth, expansion and generalized superposition of industrial fisheries onto older coastal subsistence communities, initiating extensive competition, overexploitation, and with resultant dwindling resources and habitat destruction. I have started a Timeline of Fisheries Development that provides a framework of information upon which these facts are derived: <.http://www.monterey.edu/faculty/SharpGary/world/FisheryTimeline.html> I will continue to develop the Timeline, so that others might learn how humans resolve the issues of complex aquatic ecosystems, limited resource sharing, or not. Close

• 18. [Article] Changes in Decision Making in Diffuse Water Pollution Control

  Abstract only

  Citation × Citation Citation Abstract Copy Title: Changes in Decision Making in Diffuse Water Pollution Control Author: Warkentin, Benno P. Year: 2001 Abstract only Title: Changes in Decision Making in Diffuse Water Pollution Control Author: Warkentin, Benno P. Year: 2001 Abstract only Close

• 19. [Article] A Deliberative Approach to Valuation of Cold Water Corals - Investigating Opportunity Costs and the Precautionary Principle

  Presentation

  Citation × Citation Citation Abstract Copy Title: A Deliberative Approach to Valuation of Cold Water Corals - Investigating Opportunity Costs and the Precautionary Principle Author: Falk-Petersen, Jannike Presentation Title: A Deliberative Approach to Valuation of Cold Water Corals - Investigating Opportunity Costs and the Precautionary Principle Author: Falk-Petersen, Jannike Presentation Close

• 20. [Article] A Brief History of Fish Processing in California and Oregon

  I will present a brief history of fish processing along the Pacific Coast of California and Oregon, and recollect some childhood memories of “laying about” in fish houses and fishing boats in my “home ...

  Citation × Citation Citation Abstract Copy Title: A Brief History of Fish Processing in California and Oregon Author: Grader, Zeke Year: 2001 I will present a brief history of fish processing along the Pacific Coast of California and Oregon, and recollect some childhood memories of “laying about” in fish houses and fishing boats in my “home port” of Fort Bragg. As many of you know, the past 25 years of my career have been spent representing commercial fishermen as the executive director and counsel for one of the nation’s larger fishing organizations, and much of that time has been dedicated to fish and fish habitat conservation. But my own roots were shoreside, where my father owned or was partners in fish processing plants in northern California and Oregon. Title: A Brief History of Fish Processing in California and Oregon Author: Grader, Zeke Year: 2001 I will present a brief history of fish processing along the Pacific Coast of California and Oregon, and recollect some childhood memories of “laying about” in fish houses and fishing boats in my “home port” of Fort Bragg. As many of you know, the past 25 years of my career have been spent representing commercial fishermen as the executive director and counsel for one of the nation’s larger fishing organizations, and much of that time has been dedicated to fish and fish habitat conservation. But my own roots were shoreside, where my father owned or was partners in fish processing plants in northern California and Oregon. Close

• 21. [Article] Improving the Efficiency of Timber Supply While Saving the Fish: The Umpqua Land Exchange Project

  Western land development initiatives by the federal government led to a fragmented ownership in much of western Oregon. A project to examine the feasibility of voluntary land exchanges between public and ...

  Citation × Citation Citation Abstract Copy Title: Improving the Efficiency of Timber Supply While Saving the Fish: The Umpqua Land Exchange Project Author: Sessions, John Year: 2001 Western land development initiatives by the federal government led to a fragmented ownership in much of western Oregon. A project to examine the feasibility of voluntary land exchanges between public and private owners to increase ecological health of fish and other species in Umpqua Basin while maintaining timber supply has been initiated. A landscape model has been developed to quantitatively link geomorphic and management related variables to species habitat suitability so that solutions can be systematically assessed. A pilot study to develop and test the methodology has been completed and data compilation is in the final stages for the first 675,000 acre (2700 sq. km) analysis unit. Title: Improving the Efficiency of Timber Supply While Saving the Fish: The Umpqua Land Exchange Project Author: Sessions, John Year: 2001 Western land development initiatives by the federal government led to a fragmented ownership in much of western Oregon. A project to examine the feasibility of voluntary land exchanges between public and private owners to increase ecological health of fish and other species in Umpqua Basin while maintaining timber supply has been initiated. A landscape model has been developed to quantitatively link geomorphic and management related variables to species habitat suitability so that solutions can be systematically assessed. A pilot study to develop and test the methodology has been completed and data compilation is in the final stages for the first 675,000 acre (2700 sq. km) analysis unit. Close

• 22. [Article] A Brief Overview of the History of Fish Culture and its Relation to Fisheries Sciences

  Extended abstract and presentation

  Citation × Citation Citation Abstract Copy Title: A Brief Overview of the History of Fish Culture and its Relation to Fisheries Sciences Author: Sharp, Gary D. Year: 2001 Extended abstract and presentation Title: A Brief Overview of the History of Fish Culture and its Relation to Fisheries Sciences Author: Sharp, Gary D. Year: 2001 Extended abstract and presentation Close

• 23. [Article] Fisheries in a Complex System

  An important subset of natural resource management addresses preserving and/or harvesting biological resources. Examples are policies that derive from the Endangered Species Act including habitat conservation ...

  Citation × Citation Citation Abstract Copy Title: Fisheries in a Complex System Author: Tschirhart, John, Finoff, David Year: 2001 An important subset of natural resource management addresses preserving and/or harvesting biological resources. Examples are policies that derive from the Endangered Species Act including habitat conservation plans, the U.S. Forest Service’s logging practices, and fishery management councils’ decisions regarding catches. To understand the effectiveness of management policies requires an understanding of the interactions between the natural world and the human economy, because economies and ecosystems are inextricably linked. Common economic variables such as incomes and prices affect and are affected by common ecosystem variables such as resiliency and species populations. In spite of the linkages between the two systems, models of economies and ecosystems usually disregard one another. Title: Fisheries in a Complex System Author: Tschirhart, John, Finoff, David Year: 2001 An important subset of natural resource management addresses preserving and/or harvesting biological resources. Examples are policies that derive from the Endangered Species Act including habitat conservation plans, the U.S. Forest Service’s logging practices, and fishery management councils’ decisions regarding catches. To understand the effectiveness of management policies requires an understanding of the interactions between the natural world and the human economy, because economies and ecosystems are inextricably linked. Common economic variables such as incomes and prices affect and are affected by common ecosystem variables such as resiliency and species populations. In spite of the linkages between the two systems, models of economies and ecosystems usually disregard one another. Close

• 24. [Article] A Prototype Study for Evaluation of Algal Beds

  Research Paper

  Citation × Citation Citation Abstract Copy Title: A Prototype Study for Evaluation of Algal Beds Author: Takashima, Yoshikazu, Kaneko, Tomomi Research Paper Title: A Prototype Study for Evaluation of Algal Beds Author: Takashima, Yoshikazu, Kaneko, Tomomi Research Paper Close

• 25. [Article] The Effects of Derelict Gear on Blue Crab Production in the Chesapeake Bay

  Several factors currently threaten blue crab (Callinectes sapidus) in the Chesapeake Bay. In addition to poor water quality, degraded habitat, and shifting environmental conditions, derelict gear has recently ...

  Citation × Citation Citation Abstract Copy Title: The Effects of Derelict Gear on Blue Crab Production in the Chesapeake Bay Author: Bilkovic, Donna M., Scheld, Andrew M., Havens, Kirk J. Several factors currently threaten blue crab (Callinectes sapidus) in the Chesapeake Bay. In addition to poor water quality, degraded habitat, and shifting environmental conditions, derelict gear has recently been recognized as a significant source of mortality for this economically and culturally significant species. From 2008 through 2014, commercial watermen in Virginia were hired during their winter off season to locate, document, and remove derelict gear as part of a larger research effort to determine the biological impacts of marine debris in the Chesapeake Bay. Data on derelict gear removal generated by this research was subsequently paired with spatially resolved catch and effort data and entered into a translog production model used to estimate the economic effects of derelict gear on commercial blue crab production. Model results indicate removal significantly improved pot production and economic profits, a finding which had been previously confounded by concurrent blue crab management action. Our research builds on previous work through explicit acknowledgment of important spatial production differences and incorporation of derelict gear removal. Title: The Effects of Derelict Gear on Blue Crab Production in the Chesapeake Bay Author: Bilkovic, Donna M., Scheld, Andrew M., Havens, Kirk J. Several factors currently threaten blue crab (Callinectes sapidus) in the Chesapeake Bay. In addition to poor water quality, degraded habitat, and shifting environmental conditions, derelict gear has recently been recognized as a significant source of mortality for this economically and culturally significant species. From 2008 through 2014, commercial watermen in Virginia were hired during their winter off season to locate, document, and remove derelict gear as part of a larger research effort to determine the biological impacts of marine debris in the Chesapeake Bay. Data on derelict gear removal generated by this research was subsequently paired with spatially resolved catch and effort data and entered into a translog production model used to estimate the economic effects of derelict gear on commercial blue crab production. Model results indicate removal significantly improved pot production and economic profits, a finding which had been previously confounded by concurrent blue crab management action. Our research builds on previous work through explicit acknowledgment of important spatial production differences and incorporation of derelict gear removal. Close

• 26. [Article] Development of Ports and its Impact on Marine Fish Production: A Critical Study of Gujarat State (India)

  Gujarat, a major maritime state, has 20 percent coastline and accounts for 10 per cent of fish production of India. Recently, the government of Gujarat has placed a special emphasis on the development ...

  Citation × Citation Citation Abstract Copy Title: Development of Ports and its Impact on Marine Fish Production: A Critical Study of Gujarat State (India) Author: Kulkarni, Vilas, Asthana, Anjani Gujarat, a major maritime state, has 20 percent coastline and accounts for 10 per cent of fish production of India. Recently, the government of Gujarat has placed a special emphasis on the development of ports with an objective to explore the opportunities of trade through the ports. The government plans to develop around 41 ports in the state wherein 12 are almost operational. Looking to this development many private players have shown interest in port development under Publicprivate partnership model. These developments are on the commercial lines of trade negating the living resources of sea. Moreover, this is also adversely affecting the natural habitat of fishery, resulting in depletion of production and degradation of species. In this process, the fishermen community of the state are worst affected. Based on the primary and secondary survey in and around two ports of Veraval and Porbandar the study finds that fishermen are facing difficulties to sustain the fish production and commercial species of fish for their survival. Now, they need to enter deep into the sea for fishing which has increased the cost of fishing operation. In the end, comparing the two ports the study gives suggestions for the sustainable development of ports and fisheries. Title: Development of Ports and its Impact on Marine Fish Production: A Critical Study of Gujarat State (India) Author: Kulkarni, Vilas, Asthana, Anjani Gujarat, a major maritime state, has 20 percent coastline and accounts for 10 per cent of fish production of India. Recently, the government of Gujarat has placed a special emphasis on the development of ports with an objective to explore the opportunities of trade through the ports. The government plans to develop around 41 ports in the state wherein 12 are almost operational. Looking to this development many private players have shown interest in port development under Publicprivate partnership model. These developments are on the commercial lines of trade negating the living resources of sea. Moreover, this is also adversely affecting the natural habitat of fishery, resulting in depletion of production and degradation of species. In this process, the fishermen community of the state are worst affected. Based on the primary and secondary survey in and around two ports of Veraval and Porbandar the study finds that fishermen are facing difficulties to sustain the fish production and commercial species of fish for their survival. Now, they need to enter deep into the sea for fishing which has increased the cost of fishing operation. In the end, comparing the two ports the study gives suggestions for the sustainable development of ports and fisheries. Close

• 27. [Article] Impacts of Agriculture on the Inland Capture Fisheries in the Mekong Delta

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Impacts of Agriculture on the Inland Capture Fisheries in the Mekong Delta Author: Vu, Vi An, Ngwenya, Elkana Abstract only. Title: Impacts of Agriculture on the Inland Capture Fisheries in the Mekong Delta Author: Vu, Vi An, Ngwenya, Elkana Abstract only. Close

• 28. [Article] Artisanal Fisheries in Palamós - Economic indicators - Marine Protected Areas

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Artisanal Fisheries in Palamós - Economic indicators - Marine Protected Areas Author: Nieto Conde, Fernando Abstract only. Title: Artisanal Fisheries in Palamós - Economic indicators - Marine Protected Areas Author: Nieto Conde, Fernando Abstract only. Close

• 29. [Article] Estimating the Economic Cost of Viral Salmonid Disease in UK Aquaculture

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Estimating the Economic Cost of Viral Salmonid Disease in UK Aquaculture Author: Fofana, Abdulai Abstract only. Title: Estimating the Economic Cost of Viral Salmonid Disease in UK Aquaculture Author: Fofana, Abdulai Abstract only. Close

• 30. [Article] Parallel Agreements in Fisheries Mangamenet

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Parallel Agreements in Fisheries Mangamenet Author: Lindroos, Marko, Kronbak, Lone Grønbæk Abstract only. Title: Parallel Agreements in Fisheries Mangamenet Author: Lindroos, Marko, Kronbak, Lone Grønbæk Abstract only. Close

• 31. [Article] Fish Capture and Culture in Agro-Ecosystems: A New Concept for Old Practice?

  No poster available.

  Citation × Citation Citation Abstract Copy Title: Fish Capture and Culture in Agro-Ecosystems: A New Concept for Old Practice? Author: Nguyen-Khoa, Sophie, Van Brakel, Martin No poster available. Title: Fish Capture and Culture in Agro-Ecosystems: A New Concept for Old Practice? Author: Nguyen-Khoa, Sophie, Van Brakel, Martin No poster available. Close

• 32. [Article] How Deep Is the European Union Fleet Fishing?

  No poster available.

  Citation × Citation Citation Abstract Copy Title: How Deep Is the European Union Fleet Fishing? Author: Villasante, Sebastian No poster available. Title: How Deep Is the European Union Fleet Fishing? Author: Villasante, Sebastian No poster available. Close

• 33. [Article] Optimal Fisheries Management in the Presence of an Endangered Predator and Harvestable Prey

  This paper analyzes optimal fishery management in the presence of an endangered predator that competes with humans for a commercially viable prey. Because traditional predator controls are not possible ...

  Citation × Citation Citation Abstract Copy Title: Optimal Fisheries Management in the Presence of an Endangered Predator and Harvestable Prey Author: Kaplan, Jonathan D., Smith, Martin D. Year: 2001 This paper analyzes optimal fishery management in the presence of an endangered predator that competes with humans for a commercially viable prey. Because traditional predator controls are not possible when the predator is endangered, we focus on harvest effort controls over the prey’s habitat as a means to maintain the predator-prey relationship and sustain the economic viability of the fishery. The management model is based on optimizing fishery rents subject to maintaining a growing predator population. We derive optimal management decisions, along a singular path, with and without a predator constraint and demonstrate the need to consider the predator-prey relationship explicitly. In addition, we derive an expression for the shadow value of the endangered predator, along the singular path, in terms of forgone fishery rents. To illustrate these results, we provide an application to the contentious California sea otter-urchin system and the related urchin fishery. Title: Optimal Fisheries Management in the Presence of an Endangered Predator and Harvestable Prey Author: Kaplan, Jonathan D., Smith, Martin D. Year: 2001 This paper analyzes optimal fishery management in the presence of an endangered predator that competes with humans for a commercially viable prey. Because traditional predator controls are not possible when the predator is endangered, we focus on harvest effort controls over the prey’s habitat as a means to maintain the predator-prey relationship and sustain the economic viability of the fishery. The management model is based on optimizing fishery rents subject to maintaining a growing predator population. We derive optimal management decisions, along a singular path, with and without a predator constraint and demonstrate the need to consider the predator-prey relationship explicitly. In addition, we derive an expression for the shadow value of the endangered predator, along the singular path, in terms of forgone fishery rents. To illustrate these results, we provide an application to the contentious California sea otter-urchin system and the related urchin fishery. Close

• 34. [Article] Co-management in the Assessment of Ragay Gulf, Philippines

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Co-management in the Assessment of Ragay Gulf, Philippines Author: Campos, Maria Rebecca Abstract only. Title: Co-management in the Assessment of Ragay Gulf, Philippines Author: Campos, Maria Rebecca Abstract only. Close

• 35. [Article] Carbon Footprint of Commercial Fishing In the Northeast United States

  Environmental concerns about seafood consumption generally are associated with the status of target stocks as well as bycatch and/or habitat issues. The more recent concept of "food miles" hails from terrestrial ...

  Citation × Citation Citation Abstract Copy Title: Carbon Footprint of Commercial Fishing In the Northeast United States Author: Schneider, Greg, Kitts, Andrew, Lent, Rebecca Environmental concerns about seafood consumption generally are associated with the status of target stocks as well as bycatch and/or habitat issues. The more recent concept of "food miles" hails from terrestrial food production, and focuses on "consuming locally" in an effort to reduce the carbon footprint of a consumer's diet. Fish is one of the most heavily traded food products in the world. The idea of consumers considering food miles in their consumption decisions has tremendous implications for seafood. Over 40 percent of global production of seafood is traded internationally, and the distances between fishing vessel and dinner plate only seem to grow. But how important is the carbon footprint of shipping relative to the production of seafood? This paper examines the share of energy consumption associated with the harvest of seafood in the Northeast U.S. Fishing vessel fuel consumption and landings are used to assess energy use per landed (live) weight of seafood. Such information should shed light on the true nature of the carbon footprint of seafood trade. Title: Carbon Footprint of Commercial Fishing In the Northeast United States Author: Schneider, Greg, Kitts, Andrew, Lent, Rebecca Environmental concerns about seafood consumption generally are associated with the status of target stocks as well as bycatch and/or habitat issues. The more recent concept of "food miles" hails from terrestrial food production, and focuses on "consuming locally" in an effort to reduce the carbon footprint of a consumer's diet. Fish is one of the most heavily traded food products in the world. The idea of consumers considering food miles in their consumption decisions has tremendous implications for seafood. Over 40 percent of global production of seafood is traded internationally, and the distances between fishing vessel and dinner plate only seem to grow. But how important is the carbon footprint of shipping relative to the production of seafood? This paper examines the share of energy consumption associated with the harvest of seafood in the Northeast U.S. Fishing vessel fuel consumption and landings are used to assess energy use per landed (live) weight of seafood. Such information should shed light on the true nature of the carbon footprint of seafood trade. Close

• 36. [Article] Applying Principles from Economics to Improve the Transfer of Ecological Production Estimates in Fisheries Ecosystem Services Research

  Presentation

  Citation × Citation Citation Abstract Copy Title: Applying Principles from Economics to Improve the Transfer of Ecological Production Estimates in Fisheries Ecosystem Services Research Author: Errend, Melissa Presentation Title: Applying Principles from Economics to Improve the Transfer of Ecological Production Estimates in Fisheries Ecosystem Services Research Author: Errend, Melissa Presentation Close

• 37. [Article] Potential Benefits of a Transboundary Marine Protected Area Under no Cooperation Between Countries

  There is a considerable amount of work done in transboundary fisheries and the implications of non-cooperative scenarios using game theory; there is also plenty of research about Marine Protected Areas ...

  Citation × Citation Citation Abstract Copy Title: Potential Benefits of a Transboundary Marine Protected Area Under no Cooperation Between Countries Author: Gaines, Steve, Costello, Chris, Molina, Renato There is a considerable amount of work done in transboundary fisheries and the implications of non-cooperative scenarios using game theory; there is also plenty of research about Marine Protected Areas (MPA) and their role on improving biomass, fishing yields and fishermen profits. However, there is still a lack of studies about the potential benefits of implementing (MPA) in order to alleviate biological and economic inefficiencies that result from competitive scenarios. We modified the benchmark model proposed by Levhari and Mirman (1980) in order to account for a transboundary fishery scenario under different movement patterns for a theoretic population over a spatial setting. By confining the stock between two Exclusive Economic Zones, we simulated two countries that differ in harvesting strategies and share equal proportions of the stock habitat. We found that MPAs have the potential to overcome both biological and economic inefficiencies in the fishery when the species movement is sufficiently high and the MPA is set in the optimal location. However, they can also have negative consequences when they are poorly designed or when the species movement is not high enough to generate significant spillover effects. Title: Potential Benefits of a Transboundary Marine Protected Area Under no Cooperation Between Countries Author: Gaines, Steve, Costello, Chris, Molina, Renato There is a considerable amount of work done in transboundary fisheries and the implications of non-cooperative scenarios using game theory; there is also plenty of research about Marine Protected Areas (MPA) and their role on improving biomass, fishing yields and fishermen profits. However, there is still a lack of studies about the potential benefits of implementing (MPA) in order to alleviate biological and economic inefficiencies that result from competitive scenarios. We modified the benchmark model proposed by Levhari and Mirman (1980) in order to account for a transboundary fishery scenario under different movement patterns for a theoretic population over a spatial setting. By confining the stock between two Exclusive Economic Zones, we simulated two countries that differ in harvesting strategies and share equal proportions of the stock habitat. We found that MPAs have the potential to overcome both biological and economic inefficiencies in the fishery when the species movement is sufficiently high and the MPA is set in the optimal location. However, they can also have negative consequences when they are poorly designed or when the species movement is not high enough to generate significant spillover effects. Close

• 38. [Article] Modeling the economic and ecological co-viability of the Northern Prawn Fishery in Australia

  Abstract only

  Citation × Citation Citation Abstract Copy Title: Modeling the economic and ecological co-viability of the Northern Prawn Fishery in Australia Author: Jennings, Sarah, Deng, Roy, Dichmont, Cathy, Gourguet, Sophie, Little, Rich, Doyen, Luc, Theabaud, Olivier, Pascoe, Sean Abstract only Title: Modeling the economic and ecological co-viability of the Northern Prawn Fishery in Australia Author: Jennings, Sarah, Deng, Roy, Dichmont, Cathy, Gourguet, Sophie, Little, Rich, Doyen, Luc, Theabaud, Olivier, Pascoe, Sean Abstract only Close

• 39. [Article] Applying Benefit Transfer to Improve the Transfer of Ecological Estimates in Ecosystem Services Research and Policy

  Ecosystem services (ES) represent a way to represent and quantify multiple uses, values as well as connectivity between ecosystem processes and human well-being. Ecosystem-based fisheries management approaches ...

  Citation × Citation Citation Abstract Copy Title: Applying Benefit Transfer to Improve the Transfer of Ecological Estimates in Ecosystem Services Research and Policy Author: Errend, Melissa, Moon, JB, DeWitt, Ted Ecosystem services (ES) represent a way to represent and quantify multiple uses, values as well as connectivity between ecosystem processes and human well-being. Ecosystem-based fisheries management approaches may seek to quantify expected trade-offs in ecosystem services due to actions such as restoration and gear restrictions, or due to changes such as climate change and ocean acidification. However, lack of adequate data, time or budget constraints needed to model these scenarios in part creates a demand to directly apply (i.e., transfer) existing models and estimates of ecological production across different geographic, temporal, or spatial scales. Inconsistency and a lack of transparency in how knowledge gaps are filled by transfers can create sources of uncertainty and error that can propagate through and between ecosystem service values and assessments. While production estimate transfer represents a useful tool for research, policy and management to gain ES information when primary research is not available, transparency concerning these values is needed for assessing assumptions, trade-offs, and the need for primary research. While methodologies exist to facilitate and analyze the transfer of economic ES values (e.g., benefit transfer), there is no analogous formalized process to transfer ecological data underlying ES production. Drawing from the benefit transfer literature, we present a framework to similarly improve the transparency and accuracy of transferred ecological and biophysical ES production estimates in coastal ecosystem services assessments, specifically for habitat-fishery linkages. Title: Applying Benefit Transfer to Improve the Transfer of Ecological Estimates in Ecosystem Services Research and Policy Author: Errend, Melissa, Moon, JB, DeWitt, Ted Ecosystem services (ES) represent a way to represent and quantify multiple uses, values as well as connectivity between ecosystem processes and human well-being. Ecosystem-based fisheries management approaches may seek to quantify expected trade-offs in ecosystem services due to actions such as restoration and gear restrictions, or due to changes such as climate change and ocean acidification. However, lack of adequate data, time or budget constraints needed to model these scenarios in part creates a demand to directly apply (i.e., transfer) existing models and estimates of ecological production across different geographic, temporal, or spatial scales. Inconsistency and a lack of transparency in how knowledge gaps are filled by transfers can create sources of uncertainty and error that can propagate through and between ecosystem service values and assessments. While production estimate transfer represents a useful tool for research, policy and management to gain ES information when primary research is not available, transparency concerning these values is needed for assessing assumptions, trade-offs, and the need for primary research. While methodologies exist to facilitate and analyze the transfer of economic ES values (e.g., benefit transfer), there is no analogous formalized process to transfer ecological data underlying ES production. Drawing from the benefit transfer literature, we present a framework to similarly improve the transparency and accuracy of transferred ecological and biophysical ES production estimates in coastal ecosystem services assessments, specifically for habitat-fishery linkages. Close

• 40. [Article] Non-use Values in Natural Resource Management – A Bioeconomic Model of Fisheries and Habitat

  As fisheries management becomes more collaborative by seeking input and involvement from stakeholders, it is important to understand and address the diversity of those stakeholders. Gulf Coast fisheries ...

  Citation × Citation Citation Abstract Copy Title: Non-use Values in Natural Resource Management – A Bioeconomic Model of Fisheries and Habitat Author: Kahui, Viktoria, Armstrong, Claire W., Aanesen, Margrethe, Czajkowski, Mikolaj, Vondolia, Godwin Kofi As fisheries management becomes more collaborative by seeking input and involvement from stakeholders, it is important to understand and address the diversity of those stakeholders. Gulf Coast fisheries communities include diverse racial and ethnic groups, particularly a large number of Vietnamese Americans involved in all aspects of the seafood industry. Recent disasters, including hurricanes and the BP Macondo oil spill, have exposed a number of communication barriers between state and federal agencies and the Vietnamese American fishing community on the Gulf Coast as well as a lack of reliable socioeconomic data on Vietnamese American fishers and their management and governance priorities. This research focuses on a mixed methods approach to create a database of key baseline socioeconomic data on the Vietnamese American communities affected by fishery management in Mississippi and Alabama and as well as to identify avenues and barriers for communication between Vietnamese American fishers and state and federal fisheries-related agencies in the region. In doing so, we discuss using a combination of 1) face-to-face surveys with Vietnamese Americans in the fishing industry, 2) interviews with representatives of relevant state and federal agencies, 3) interviews with community organizations and key informants, and 4) focus groups with Vietnamese Americans in different aspects of the fishing industry. Collection of this type of data will be used in identifying potential strategies to improve engagement of Vietnamese American stakeholders in the region and be crucial to understand the current and future consequences of management choices for diverse stakeholders. Title: Non-use Values in Natural Resource Management – A Bioeconomic Model of Fisheries and Habitat Author: Kahui, Viktoria, Armstrong, Claire W., Aanesen, Margrethe, Czajkowski, Mikolaj, Vondolia, Godwin Kofi As fisheries management becomes more collaborative by seeking input and involvement from stakeholders, it is important to understand and address the diversity of those stakeholders. Gulf Coast fisheries communities include diverse racial and ethnic groups, particularly a large number of Vietnamese Americans involved in all aspects of the seafood industry. Recent disasters, including hurricanes and the BP Macondo oil spill, have exposed a number of communication barriers between state and federal agencies and the Vietnamese American fishing community on the Gulf Coast as well as a lack of reliable socioeconomic data on Vietnamese American fishers and their management and governance priorities. This research focuses on a mixed methods approach to create a database of key baseline socioeconomic data on the Vietnamese American communities affected by fishery management in Mississippi and Alabama and as well as to identify avenues and barriers for communication between Vietnamese American fishers and state and federal fisheries-related agencies in the region. In doing so, we discuss using a combination of 1) face-to-face surveys with Vietnamese Americans in the fishing industry, 2) interviews with representatives of relevant state and federal agencies, 3) interviews with community organizations and key informants, and 4) focus groups with Vietnamese Americans in different aspects of the fishing industry. Collection of this type of data will be used in identifying potential strategies to improve engagement of Vietnamese American stakeholders in the region and be crucial to understand the current and future consequences of management choices for diverse stakeholders. Close

• 41. [Article] Baseline investigation and promotion of self-organizing networks in two Southern areas of Thailand

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Baseline investigation and promotion of self-organizing networks in two Southern areas of Thailand Author: Tandavanitj, Sanchai, Henoque, Yves Research Paper Title: Baseline investigation and promotion of self-organizing networks in two Southern areas of Thailand Author: Tandavanitj, Sanchai, Henoque, Yves Research Paper Close

• 42. [Article] Educating Us Fishery Managers And Policy Makers: The Problem Of Incentives

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Educating Us Fishery Managers And Policy Makers: The Problem Of Incentives Author: Hanna, Susan Research Paper Title: Educating Us Fishery Managers And Policy Makers: The Problem Of Incentives Author: Hanna, Susan Research Paper Close

• 43. [Article] Environmental Tradeoffs Between Aquaculture and Capture Fisheries

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Environmental Tradeoffs Between Aquaculture and Capture Fisheries Author: Ahmed, Mahfuzuddin, Wada, Nikolas, Delgado, Christopher Research Paper Title: Environmental Tradeoffs Between Aquaculture and Capture Fisheries Author: Ahmed, Mahfuzuddin, Wada, Nikolas, Delgado, Christopher Research Paper Close

• 44. [Article] The Dynamic Role of Sablefish in a Mutlispecies, Multigear IFQ Fishery

  presentation

  Citation × Citation Citation Abstract Copy Title: The Dynamic Role of Sablefish in a Mutlispecies, Multigear IFQ Fishery Author: Steiner, Erin, Holland, Dan presentation Title: The Dynamic Role of Sablefish in a Mutlispecies, Multigear IFQ Fishery Author: Steiner, Erin, Holland, Dan presentation Close

• 45. [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

• 46. [Article] The Need for Synergy in Small-Scale Fisheries and Aquaculture towards Sustainable Grouper Fisheries and Trade in the Coral Triangle Area: The Case of The Philippines

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: The Need for Synergy in Small-Scale Fisheries and Aquaculture towards Sustainable Grouper Fisheries and Trade in the Coral Triangle Area: The Case of The Philippines Author: Tormon, Dianne Hope, Salayo, Nerissa, Toledo, Joebert Abstract only. Title: The Need for Synergy in Small-Scale Fisheries and Aquaculture towards Sustainable Grouper Fisheries and Trade in the Coral Triangle Area: The Case of The Philippines Author: Tormon, Dianne Hope, Salayo, Nerissa, Toledo, Joebert Abstract only. Close

• 47. [Article] Evidence of Fishing Down Marine Food Webs in Galician (Nw Spain) Small-Scale Fisheries

  No poster available.

  Citation × Citation Citation Abstract Copy Title: Evidence of Fishing Down Marine Food Webs in Galician (Nw Spain) Small-Scale Fisheries Author: Villasante, Sebastian, Rodriguez, Gonzalo No poster available. Title: Evidence of Fishing Down Marine Food Webs in Galician (Nw Spain) Small-Scale Fisheries Author: Villasante, Sebastian, Rodriguez, Gonzalo No poster available. Close

• 48. [Article] Effects of Mpa on Small Scale Coral Reef Fisheries and Communities: Evidence From Vanuatu (South Pacific)

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Effects of Mpa on Small Scale Coral Reef Fisheries and Communities: Evidence From Vanuatu (South Pacific) Author: Pascal, Nicolas, Eric, Clua, Gereva, Sompert, Govan, Hugh Abstract only. Title: Effects of Mpa on Small Scale Coral Reef Fisheries and Communities: Evidence From Vanuatu (South Pacific) Author: Pascal, Nicolas, Eric, Clua, Gereva, Sompert, Govan, Hugh Abstract only. Close

• 49. [Article] Bidder Learning in Sequential License Buyback Auctions: A Model of the Texas Shrimp License Buyback Program

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Bidder Learning in Sequential License Buyback Auctions: A Model of the Texas Shrimp License Buyback Program Author: Mamula, Aaron, Woodward, Richard Abstract only. Title: Bidder Learning in Sequential License Buyback Auctions: A Model of the Texas Shrimp License Buyback Program Author: Mamula, Aaron, Woodward, Richard Abstract only. Close

• 50. [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

• 51. [Article] Towards Development of Biological-Economic Evaluation tool in Fishery Policy: Cost-Effectiveness Analysis of Protecting Species in a Multi Species Fishery

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Towards Development of Biological-Economic Evaluation tool in Fishery Policy: Cost-Effectiveness Analysis of Protecting Species in a Multi Species Fishery Author: Grønbæk Kronbak, Lone, Vestergaard, Niels Abstract only. Title: Towards Development of Biological-Economic Evaluation tool in Fishery Policy: Cost-Effectiveness Analysis of Protecting Species in a Multi Species Fishery Author: Grønbæk Kronbak, Lone, Vestergaard, Niels Abstract only. Close

• 52. [Article] Conservation Policies and Changes in the Economic Status of Activities and Marine Resources: the Case of Marine Protected Areas in French Polynesia

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Conservation Policies and Changes in the Economic Status of Activities and Marine Resources: the Case of Marine Protected Areas in French Polynesia Author: Bambridge, Tamatoa, Chaboud, Christian, Méral, Philippe Abstract only. Title: Conservation Policies and Changes in the Economic Status of Activities and Marine Resources: the Case of Marine Protected Areas in French Polynesia Author: Bambridge, Tamatoa, Chaboud, Christian, Méral, Philippe Abstract only. Close

• 53. [Article] The Non Biological Productions of Mpas As a Major Driver Marine Resources Conservation's Governance

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: The Non Biological Productions of Mpas As a Major Driver Marine Resources Conservation's Governance Author: David, Gilbert, Thomassin, Aurélie Abstract only. Title: The Non Biological Productions of Mpas As a Major Driver Marine Resources Conservation's Governance Author: David, Gilbert, Thomassin, Aurélie Abstract only. Close

• 54. [Article] Marine Spatial Planning and Fisheries: the Potential Economic Losses for Fisheries in the Context of Competing Interests in Coastal Zones

  There is an increasing demand for marine space from many different economic sectors in the German coastal and exclusive economic zone: sand and gravel removal, wind farms, fisheries, shipping or oil and ...

  Citation × Citation Citation Abstract Copy Title: Marine Spatial Planning and Fisheries: the Potential Economic Losses for Fisheries in the Context of Competing Interests in Coastal Zones Author: Berkenhagen, Jörg, Fock, Heino, Pedersen, Søren, Döring, Ralf, Kloppmann, Matthias, Schulze, Torsten There is an increasing demand for marine space from many different economic sectors in the German coastal and exclusive economic zone: sand and gravel removal, wind farms, fisheries, shipping or oil and gas exploration. Additionally, the Natura 2000 directive requires the declaration of areas for nature con-servation. Opposite to other economic activities, fishing is not connected with distinct rights on areas or on specific fishing grounds. First assessments show that fishermen may face heavy losses in case of the exclusive allocation of space to other activities. In the first part we depict the different economic activities in the German EEZ and the current process of spatial planning. Then we give an overview on the legal framework including the property rights system in the fishing sector. In the third part we calculate pro-spective losses in the scenario of the closure of huge areas for fishing. It will be shown that the approval process for wind farms underestimates the consequences for fisheries due to the lack of data. In many cases a reallocation of fishing effort will not be viable because of the dependency of certain species on specific habitats and their low abundance in surrounding areas. Especially small scale fishermen can only fish near the shore. Their individual quota can be interpreted as a strong property right. A closure of areas may have the same effect as a dispossession. Finally, we give an outlook on the possible process in marine spatial planning in the coming years. Title: Marine Spatial Planning and Fisheries: the Potential Economic Losses for Fisheries in the Context of Competing Interests in Coastal Zones Author: Berkenhagen, Jörg, Fock, Heino, Pedersen, Søren, Döring, Ralf, Kloppmann, Matthias, Schulze, Torsten There is an increasing demand for marine space from many different economic sectors in the German coastal and exclusive economic zone: sand and gravel removal, wind farms, fisheries, shipping or oil and gas exploration. Additionally, the Natura 2000 directive requires the declaration of areas for nature con-servation. Opposite to other economic activities, fishing is not connected with distinct rights on areas or on specific fishing grounds. First assessments show that fishermen may face heavy losses in case of the exclusive allocation of space to other activities. In the first part we depict the different economic activities in the German EEZ and the current process of spatial planning. Then we give an overview on the legal framework including the property rights system in the fishing sector. In the third part we calculate pro-spective losses in the scenario of the closure of huge areas for fishing. It will be shown that the approval process for wind farms underestimates the consequences for fisheries due to the lack of data. In many cases a reallocation of fishing effort will not be viable because of the dependency of certain species on specific habitats and their low abundance in surrounding areas. Especially small scale fishermen can only fish near the shore. Their individual quota can be interpreted as a strong property right. A closure of areas may have the same effect as a dispossession. Finally, we give an outlook on the possible process in marine spatial planning in the coming years. Close

• 55. [Article] What Are We Protecting? the Side-Effects of Spatial Closures As A tool to Mitigate Fisheries Bycatch

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: What Are We Protecting? the Side-Effects of Spatial Closures As A tool to Mitigate Fisheries Bycatch Author: Abbott, Joshua, Haynie, Alan Abstract only. Title: What Are We Protecting? the Side-Effects of Spatial Closures As A tool to Mitigate Fisheries Bycatch Author: Abbott, Joshua, Haynie, Alan Abstract only. Close

• 56. [Article] Tev (total Economic Value) Analysis of A Marine Environment in Norway

  The push for ecosystem based management has opened up not only for including more of the natural systems when managing fish resources, but also a broader perspective on the human systems, and the diverse ...

  Citation × Citation Citation Abstract Copy Title: Tev (total Economic Value) Analysis of A Marine Environment in Norway Author: Kahui, Viktoria, Armstrong, Claire, Aanesen, Margrethe The push for ecosystem based management has opened up not only for including more of the natural systems when managing fish resources, but also a broader perspective on the human systems, and the diverse activities in the sea. This is reflected for instance in the EU Maritime Policy where fisheries is just one of many activities that marine management must take into account. Research into valuation of natural resources has shown that non-use values may be substantial in the marine environment; These are e.g. existence values, such as the existence of rare species and benthic components such as corals, and option values with regard to potential future applications, e.g. in marine bioprospecting. In addition, indirect use values, such as habitat values, recreational values and nutrient cycling often far exceed the direct use values, which are typically the value of the fisheries, aquaculture and marine tourism. Applying and critiquing the Total Economic Value (TEV) set up, we have estimated marine direct use values, including fisheries and aquaculture, indirect use values and non-use values in Nordland county in Norway, specifically connected to the Lofoten-Vesterålen marine area. Lofoten-Vesterålen is the most important spawning ground for commercial fish resources such as cod and herring, and it is also a very popular tourist destination. Yet when studying some of the other values that the marine environment supplies, these traditional values are not necessarily the most important. Title: Tev (total Economic Value) Analysis of A Marine Environment in Norway Author: Kahui, Viktoria, Armstrong, Claire, Aanesen, Margrethe The push for ecosystem based management has opened up not only for including more of the natural systems when managing fish resources, but also a broader perspective on the human systems, and the diverse activities in the sea. This is reflected for instance in the EU Maritime Policy where fisheries is just one of many activities that marine management must take into account. Research into valuation of natural resources has shown that non-use values may be substantial in the marine environment; These are e.g. existence values, such as the existence of rare species and benthic components such as corals, and option values with regard to potential future applications, e.g. in marine bioprospecting. In addition, indirect use values, such as habitat values, recreational values and nutrient cycling often far exceed the direct use values, which are typically the value of the fisheries, aquaculture and marine tourism. Applying and critiquing the Total Economic Value (TEV) set up, we have estimated marine direct use values, including fisheries and aquaculture, indirect use values and non-use values in Nordland county in Norway, specifically connected to the Lofoten-Vesterålen marine area. Lofoten-Vesterålen is the most important spawning ground for commercial fish resources such as cod and herring, and it is also a very popular tourist destination. Yet when studying some of the other values that the marine environment supplies, these traditional values are not necessarily the most important. Close

• 57. [Article] Linking ecology, economics, and fleet dynamics to evaluate alternative management strategies for US West Coast trawl fisheries

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Linking ecology, economics, and fleet dynamics to evaluate alternative management strategies for US West Coast trawl fisheries Author: Kaplan, Isaac, Fulton, Elizabeth, Holland, Daniel Abstract only. Title: Linking ecology, economics, and fleet dynamics to evaluate alternative management strategies for US West Coast trawl fisheries Author: Kaplan, Isaac, Fulton, Elizabeth, Holland, Daniel Abstract only. Close

• 58. [Article] Biodiversity of river Ganga (India): An Environmental Economist Perspective

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Biodiversity of river Ganga (India): An Environmental Economist Perspective Author: Shrivastava, Rama Shanker Abstract only. Title: Biodiversity of river Ganga (India): An Environmental Economist Perspective Author: Shrivastava, Rama Shanker Abstract only. Close

• 59. [Article] Challenges against Fisheries Sustainable Development Khanh Hoa Fisheries Industry in Focus

  Khanh Hoa, featured by advantageous conditions from both nature and humans, has long enjoyed great potentials for fisheries development. The most immediate evidence can be cited is that the fisheries industry made ...

  Citation × Citation Citation Abstract Copy Title: Challenges against Fisheries Sustainable Development Khanh Hoa Fisheries Industry in Focus Author: Tram, Anh Thi Nguyen Khanh Hoa, featured by advantageous conditions from both nature and humans, has long enjoyed great potentials for fisheries development. The most immediate evidence can be cited is that the fisheries industry made significant contributions to the local economic growth during the recent period of 2001- 2006, and impressive figures in various aspects were accordingly recorded. Simply put, economically, fisheries export turnover was responsible for more than a half of the total export value of the province. Socially, the industry generated jobs of various forms for over 60.000 people, enabling life quality of a sizeable portion of population become better off. Despite positive impacts created from development, the fisheries have been confronting immense challenges in both production and non-production operations, namely: coastal resources have exhibited signs of being shrunken; destructive fishing methods have been still prevalently practiced; natural habitats have edged towards degradation while the social environment unavoidably suffered. These challenges from the production sector seem to be more complicated as a consequence of high reliance of fisher’s livelihood on fishing. To the similar extent, in non-production areas, post-harvest loss, ineffective marketing mechanisms, and underperformed fishing fleets have been frequently observed. Through extensive research, factors behind these challenges will be discussed and recommendations for change be proposed as a broad orientation to fisheries management in Khanh Hoa Province. The line of reasoning is made ultimately for sustainable development. Title: Challenges against Fisheries Sustainable Development Khanh Hoa Fisheries Industry in Focus Author: Tram, Anh Thi Nguyen Khanh Hoa, featured by advantageous conditions from both nature and humans, has long enjoyed great potentials for fisheries development. The most immediate evidence can be cited is that the fisheries industry made significant contributions to the local economic growth during the recent period of 2001- 2006, and impressive figures in various aspects were accordingly recorded. Simply put, economically, fisheries export turnover was responsible for more than a half of the total export value of the province. Socially, the industry generated jobs of various forms for over 60.000 people, enabling life quality of a sizeable portion of population become better off. Despite positive impacts created from development, the fisheries have been confronting immense challenges in both production and non-production operations, namely: coastal resources have exhibited signs of being shrunken; destructive fishing methods have been still prevalently practiced; natural habitats have edged towards degradation while the social environment unavoidably suffered. These challenges from the production sector seem to be more complicated as a consequence of high reliance of fisher’s livelihood on fishing. To the similar extent, in non-production areas, post-harvest loss, ineffective marketing mechanisms, and underperformed fishing fleets have been frequently observed. Through extensive research, factors behind these challenges will be discussed and recommendations for change be proposed as a broad orientation to fisheries management in Khanh Hoa Province. The line of reasoning is made ultimately for sustainable development. Close

• 60. [Article] An Impact and Management Study of Taiwanese Artificial Reef Deployment

  For the past decades, around 20% of the natural coral reefs were lost and > 20% more is currently deteriorating. Due to the recognition of positive impact to fishery resources enhancement by artificial reefs ...

  Citation × Citation Citation Abstract Copy Title: An Impact and Management Study of Taiwanese Artificial Reef Deployment Author: Guinea, Estuardo, Kuo, Heng Hung, Chuang, Ching-Ta For the past decades, around 20% of the natural coral reefs were lost and > 20% more is currently deteriorating. Due to the recognition of positive impact to fishery resources enhancement by artificial reefs (ARs) deployment, Taiwanese government has started deploying ARs as a measure to improve the environment of fishing grounds since 1974. At present, there are 88 ARs deployment areas that have been established in Taiwan, which account for more than 180,000 sets of fishing grounds. However, fisheries enhancement is not the unique purpose of ARs deployment, it also include marine ecotourism as well as protection or restoration of certain habitats. Due to the nature of public goods, this results in dispute about cost and effectiveness of ARs deployment. This study analyzed the experience of Taiwan throughout the four decades of ARs deployment, and examined the value of ARs and the mechanism of self governance. A questionnaire was designed to explore the perception on ARs of different stakeholders, and results show a certain level of achieving fisheries enhancement objectives. Increased incidences of conflicts upon territories of ARs fishing grounds among stakeholders were observed. It also implied that cooperatives of fishermen associations and community are essential in the management stage of planning ARs deployment. Based on Taiwanese experience, effective ARs should take into account all variables including reef design, site selection, depth, materials etc. It is also recommended that in the process of ARs deployment, one can not take the current economic benefit as the only criterion; decision-makers should also consider the impacts on the natural environment, the efficient use of resources, as well as humanities and social aspects. Title: An Impact and Management Study of Taiwanese Artificial Reef Deployment Author: Guinea, Estuardo, Kuo, Heng Hung, Chuang, Ching-Ta For the past decades, around 20% of the natural coral reefs were lost and > 20% more is currently deteriorating. Due to the recognition of positive impact to fishery resources enhancement by artificial reefs (ARs) deployment, Taiwanese government has started deploying ARs as a measure to improve the environment of fishing grounds since 1974. At present, there are 88 ARs deployment areas that have been established in Taiwan, which account for more than 180,000 sets of fishing grounds. However, fisheries enhancement is not the unique purpose of ARs deployment, it also include marine ecotourism as well as protection or restoration of certain habitats. Due to the nature of public goods, this results in dispute about cost and effectiveness of ARs deployment. This study analyzed the experience of Taiwan throughout the four decades of ARs deployment, and examined the value of ARs and the mechanism of self governance. A questionnaire was designed to explore the perception on ARs of different stakeholders, and results show a certain level of achieving fisheries enhancement objectives. Increased incidences of conflicts upon territories of ARs fishing grounds among stakeholders were observed. It also implied that cooperatives of fishermen associations and community are essential in the management stage of planning ARs deployment. Based on Taiwanese experience, effective ARs should take into account all variables including reef design, site selection, depth, materials etc. It is also recommended that in the process of ARs deployment, one can not take the current economic benefit as the only criterion; decision-makers should also consider the impacts on the natural environment, the efficient use of resources, as well as humanities and social aspects. Close

• 61. [Article] Aquaculture Certification and the Seafood Trade

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Aquaculture Certification and the Seafood Trade Author: Lee, Daniel Abstract only. Title: Aquaculture Certification and the Seafood Trade Author: Lee, Daniel Abstract only. Close

• 62. [Article] Te Arawa: Kaitiakitanga - Traditional Customary Practices for Freshwater and Fisheries Management: The Challenges and Successes for Te Arawa to Manage Freshwater Environments and Fisheries in Aotearoa/New Zealand.

  presentation

  Citation × Citation Citation Abstract Copy Title: Te Arawa: Kaitiakitanga - Traditional Customary Practices for Freshwater and Fisheries Management: The Challenges and Successes for Te Arawa to Manage Freshwater Environments and Fisheries in Aotearoa/New Zealand. Author: Mihinui, Roku, Kingi, Tracey, Smith, Hera, Ngawhika, Leilani presentation Title: Te Arawa: Kaitiakitanga - Traditional Customary Practices for Freshwater and Fisheries Management: The Challenges and Successes for Te Arawa to Manage Freshwater Environments and Fisheries in Aotearoa/New Zealand. Author: Mihinui, Roku, Kingi, Tracey, Smith, Hera, Ngawhika, Leilani presentation Close

• 63. [Article] Valuing Ecosystem Services: Oysters, Denitrification, and Nutrient Trading Programs

  Maryland, Pennsylvania, Virginia, and West Virginia have all developed nutrient trading programs to defray the cost of achieving mandated nitrogen load reductions in Chesapeake Bay, and there is increasing ...

  Citation × Citation Citation Abstract Copy Title: Valuing Ecosystem Services: Oysters, Denitrification, and Nutrient Trading Programs Author: DePiper, Geret S., Lipcius, Romuald N., Lipton, Douglas W. Maryland, Pennsylvania, Virginia, and West Virginia have all developed nutrient trading programs to defray the cost of achieving mandated nitrogen load reductions in Chesapeake Bay, and there is increasing interest in the role oysters can play in generating credits. A number of bioeconomic models highlight the impact these credits have in optimizing oyster harvest rates, but all overlook a major limiting factor in oyster population dynamics: oyster shell is an oyster’s preferred settling medium. Harvest thus impacts oyster productivity through the removal of both extant oysters and the future shell habitat. This is extremely important given that the removal of shell and oyster meat is a major channel by which nutrient credits could be generated. Further, recent research suggests that multiple oyster reef equilibria exist, and reef height determines the trajectory of oyster population change. In this research we couple a biological model of an oyster population, including shell dynamics, to a value function and analyze optimal oyster harvest regimes. The value function incorporates both the oyster harvesting profits and the value of an oyster reefs’ nutrient sequestration and denitrification. We then maximize the net present value of the oyster reef, using numerical dynamic programming and simulation techniques for a reasonable range of biological and economic parameters, to provide policy guidance on the trade-off between harvest, sequestration and denitrification services. Results indicate that optimal harvest rates are more sensitive to variability in the biological rather than economic parameters, although some level of harvest is almost always optimal. Title: Valuing Ecosystem Services: Oysters, Denitrification, and Nutrient Trading Programs Author: DePiper, Geret S., Lipcius, Romuald N., Lipton, Douglas W. Maryland, Pennsylvania, Virginia, and West Virginia have all developed nutrient trading programs to defray the cost of achieving mandated nitrogen load reductions in Chesapeake Bay, and there is increasing interest in the role oysters can play in generating credits. A number of bioeconomic models highlight the impact these credits have in optimizing oyster harvest rates, but all overlook a major limiting factor in oyster population dynamics: oyster shell is an oyster’s preferred settling medium. Harvest thus impacts oyster productivity through the removal of both extant oysters and the future shell habitat. This is extremely important given that the removal of shell and oyster meat is a major channel by which nutrient credits could be generated. Further, recent research suggests that multiple oyster reef equilibria exist, and reef height determines the trajectory of oyster population change. In this research we couple a biological model of an oyster population, including shell dynamics, to a value function and analyze optimal oyster harvest regimes. The value function incorporates both the oyster harvesting profits and the value of an oyster reefs’ nutrient sequestration and denitrification. We then maximize the net present value of the oyster reef, using numerical dynamic programming and simulation techniques for a reasonable range of biological and economic parameters, to provide policy guidance on the trade-off between harvest, sequestration and denitrification services. Results indicate that optimal harvest rates are more sensitive to variability in the biological rather than economic parameters, although some level of harvest is almost always optimal. Close

• 64. [Article] Anticipating the Unintended Consequences of Environmental Management in a Marine Socio-Ecological System using Qualitative Loop Analysis

  presentation

  Citation × Citation Citation Abstract Copy Title: Anticipating the Unintended Consequences of Environmental Management in a Marine Socio-Ecological System using Qualitative Loop Analysis Author: Jennings, Sarah, Austen, Giles presentation Title: Anticipating the Unintended Consequences of Environmental Management in a Marine Socio-Ecological System using Qualitative Loop Analysis Author: Jennings, Sarah, Austen, Giles presentation Close

• 65. [Article] The Total Economic Value of Small-Scale Fisheries with a Characterization of Post-Landing Trends: an Application in Madagascar with Global Relevance

  Presentaiton

  Citation × Citation Citation Abstract Copy Title: The Total Economic Value of Small-Scale Fisheries with a Characterization of Post-Landing Trends: an Application in Madagascar with Global Relevance Author: Barnes-Mauthe, Michele, Zafindrasilivonona, Bienvenue, Oleson, Kirsten L.L. Presentaiton Title: The Total Economic Value of Small-Scale Fisheries with a Characterization of Post-Landing Trends: an Application in Madagascar with Global Relevance Author: Barnes-Mauthe, Michele, Zafindrasilivonona, Bienvenue, Oleson, Kirsten L.L. Presentaiton Close

• 66. [Article] Irrigation Development on Lagoon Fisheries and Fishing Communities: A case study of Malala Lagoon in Sri Lanka

  presentation

  Citation × Citation Citation Abstract Copy Title: Irrigation Development on Lagoon Fisheries and Fishing Communities: A case study of Malala Lagoon in Sri Lanka Author: Kularatne, Mohottala Gedara presentation Title: Irrigation Development on Lagoon Fisheries and Fishing Communities: A case study of Malala Lagoon in Sri Lanka Author: Kularatne, Mohottala Gedara presentation Close

• 67. [Article] The Crucial Role of Small-scale Fisheries in Conservation

  Abstract Only

  Citation × Citation Citation Abstract Copy Title: The Crucial Role of Small-scale Fisheries in Conservation Author: Charles, Anthony Abstract Only Title: The Crucial Role of Small-scale Fisheries in Conservation Author: Charles, Anthony Abstract Only Close

• 68. [Article] African fisheries and climate change: A policy agenda

  Abstract Only

  Citation × Citation Citation Abstract Copy Title: African fisheries and climate change: A policy agenda Author: Benkenstein, Alex Abstract Only Title: African fisheries and climate change: A policy agenda Author: Benkenstein, Alex Abstract Only Close

• 69. [Article] Assessing the Poverty-Illegal Fishing Nexus in the Lake Victoria Fisheries

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  Citation × Citation Citation Abstract Copy Title: Assessing the Poverty-Illegal Fishing Nexus in the Lake Victoria Fisheries Author: Mkenda, Adolf, Kateka, Adolphine, Lokina, Razack Abstract Only Title: Assessing the Poverty-Illegal Fishing Nexus in the Lake Victoria Fisheries Author: Mkenda, Adolf, Kateka, Adolphine, Lokina, Razack Abstract Only Close

• 70. [Article] The Value of a Word: Estimating the Implicit Prices of Popular Finfish and Shellfish Labeling Practices in the U.S.

  Abstract Only

  Citation × Citation Citation Abstract Copy Title: The Value of a Word: Estimating the Implicit Prices of Popular Finfish and Shellfish Labeling Practices in the U.S. Author: Gold, Glen, Larkin, Sherry Abstract Only Title: The Value of a Word: Estimating the Implicit Prices of Popular Finfish and Shellfish Labeling Practices in the U.S. Author: Gold, Glen, Larkin, Sherry Abstract Only Close

• 71. [Article] The Current State of the Clam, Galatea paradoxa, Fishery at the Lower Volta River, Ghana

  The clam, Galatea paradoxa has for decades been an important source of protein to the riparian communities of the lower Volta River and provides employment to about 2000 people, especially women. The fishing ...

  Citation × Citation Citation Abstract Copy Title: The Current State of the Clam, Galatea paradoxa, Fishery at the Lower Volta River, Ghana Author: Agbeko, N.A., Obirikorang, K.A., Adjei-Boateng, D., Amisah, S., Agbo, N.W. The clam, Galatea paradoxa has for decades been an important source of protein to the riparian communities of the lower Volta River and provides employment to about 2000 people, especially women. The fishing grounds have dwindled from 100 km from the pre-dam era to a narrow stretch of 10 km as a result of the development of sand bars at the estuary. This study was conducted to ascertain the socio-economic importance of the clam fishery to the people of the lower Volta, Ghana. The research found out that there were 251 fishing canoes and 503 fishers engaged in the clam fishery. The average daily catch per fishing canoe was 130 kg of clams, with an annual harvest of 7700 tonnes worth 4,620,408 Ghana Cedis. Commercial extinction of G. paradoxa is imminent in the lower Volta as a result of habitat alteration and overfishing. There is the need to put in place a sustainable harvesting measure that will target medium to large size clams against the current situation where the catch is dominated by smaller clams. It is recommended that a minimum landing size of 50 mm should be imposed. This should be done in consultation with the chiefs and traditional authorities in the communities which have managed the fishery to date. The marketing of clams below the 50 mm shell length limit should be abolished and enforced by the traditional authorities. Secondly, the farming of smaller clams, which is a traditional activity in the estuary, should be encouraged so that fishers who harvest undersize clams can seed them onto their culture plots. Title: The Current State of the Clam, Galatea paradoxa, Fishery at the Lower Volta River, Ghana Author: Agbeko, N.A., Obirikorang, K.A., Adjei-Boateng, D., Amisah, S., Agbo, N.W. The clam, Galatea paradoxa has for decades been an important source of protein to the riparian communities of the lower Volta River and provides employment to about 2000 people, especially women. The fishing grounds have dwindled from 100 km from the pre-dam era to a narrow stretch of 10 km as a result of the development of sand bars at the estuary. This study was conducted to ascertain the socio-economic importance of the clam fishery to the people of the lower Volta, Ghana. The research found out that there were 251 fishing canoes and 503 fishers engaged in the clam fishery. The average daily catch per fishing canoe was 130 kg of clams, with an annual harvest of 7700 tonnes worth 4,620,408 Ghana Cedis. Commercial extinction of G. paradoxa is imminent in the lower Volta as a result of habitat alteration and overfishing. There is the need to put in place a sustainable harvesting measure that will target medium to large size clams against the current situation where the catch is dominated by smaller clams. It is recommended that a minimum landing size of 50 mm should be imposed. This should be done in consultation with the chiefs and traditional authorities in the communities which have managed the fishery to date. The marketing of clams below the 50 mm shell length limit should be abolished and enforced by the traditional authorities. Secondly, the farming of smaller clams, which is a traditional activity in the estuary, should be encouraged so that fishers who harvest undersize clams can seed them onto their culture plots. Close

• 72. [Article] Conflict in Fishery Resource Utilization: The Case of Light Luring Anchovy Fishery in Thailand

  In late 1999 Artisanal Fisherman Association in Thailand requested the government to take actions in curbing destructive anchovy fishing gears. They believed that anchovy fishing was the main cause of ...

  Citation × Citation Citation Abstract Copy Title: Conflict in Fishery Resource Utilization: The Case of Light Luring Anchovy Fishery in Thailand Author: Tokrisna, Ruangrai Year: 2001 In late 1999 Artisanal Fisherman Association in Thailand requested the government to take actions in curbing destructive anchovy fishing gears. They believed that anchovy fishing was the main cause of fishery resource depletion in their fishing grounds. Main anchovy fishing gears were light luring falling net, purse seine, and scoop net. All of them are Juvenile bycatch varied from 1.72 – 30.37% of total catches depending on gear type, vessel size, fishing ground, fishing month, and fishing year. Economic losses of juvenile bycatch were $1 – 331/boat/trip. In Songkhla, the crisis problem area, economic losses from light luring falling net were as high as 0.42 – 7.64 times of the return from anchovy. The losses from light luring anchovy purse seine were 23 – 35% of the return from anchovy. The losses from light luring scoop net varied around 2 – 7%. Anchovy catch values in Thailand was $26 million in 1997. Value added from processing was $65 million, mainly from fish sauce. In spite of low value added, 59% of the catches were processed as boiled-dried/dried anchovy mainly for export. 44% of the anchovy value in the importing country were the trade margins, including tax, in importing country. Fishing cost was 20%. This cost estimation did not include the economic loss from juvenile bycatch. Processing and marketing costs in Thailand amounted to 19%. Profit margins for domestic fishermen, processors and traders added up to 17%. Thailand might have been exporting anchovy at an underpaid resource value. The relatively better return from anchovy had led to rapid increase in anchovy fishing effort. If fishing effort exceeded carrying capacity especially in habitats of juvenile economic species, it could lead to decrease in fishing income due to resource depletion not only for artisanal fishermen but anchovy fishermen as well. Recommendations were to determine optimum fishing effort in specific fishing grounds and control the effort. Where there had been overfishing, auction on fishing license and fee on anchovy fishing on the basis of economic loss could be introduced. Coastal community should take part in controlling anchovy fishing effort. Relocation of artisanal fishermen through training and support on initial investment in nonfishing sector was recommended. Title: Conflict in Fishery Resource Utilization: The Case of Light Luring Anchovy Fishery in Thailand Author: Tokrisna, Ruangrai Year: 2001 In late 1999 Artisanal Fisherman Association in Thailand requested the government to take actions in curbing destructive anchovy fishing gears. They believed that anchovy fishing was the main cause of fishery resource depletion in their fishing grounds. Main anchovy fishing gears were light luring falling net, purse seine, and scoop net. All of them are Juvenile bycatch varied from 1.72 – 30.37% of total catches depending on gear type, vessel size, fishing ground, fishing month, and fishing year. Economic losses of juvenile bycatch were $1 – 331/boat/trip. In Songkhla, the crisis problem area, economic losses from light luring falling net were as high as 0.42 – 7.64 times of the return from anchovy. The losses from light luring anchovy purse seine were 23 – 35% of the return from anchovy. The losses from light luring scoop net varied around 2 – 7%. Anchovy catch values in Thailand was $26 million in 1997. Value added from processing was $65 million, mainly from fish sauce. In spite of low value added, 59% of the catches were processed as boiled-dried/dried anchovy mainly for export. 44% of the anchovy value in the importing country were the trade margins, including tax, in importing country. Fishing cost was 20%. This cost estimation did not include the economic loss from juvenile bycatch. Processing and marketing costs in Thailand amounted to 19%. Profit margins for domestic fishermen, processors and traders added up to 17%. Thailand might have been exporting anchovy at an underpaid resource value. The relatively better return from anchovy had led to rapid increase in anchovy fishing effort. If fishing effort exceeded carrying capacity especially in habitats of juvenile economic species, it could lead to decrease in fishing income due to resource depletion not only for artisanal fishermen but anchovy fishermen as well. Recommendations were to determine optimum fishing effort in specific fishing grounds and control the effort. Where there had been overfishing, auction on fishing license and fee on anchovy fishing on the basis of economic loss could be introduced. Coastal community should take part in controlling anchovy fishing effort. Relocation of artisanal fishermen through training and support on initial investment in nonfishing sector was recommended. Close

• 73. [Article] Assessing Policies Promoting Poverty Alleviation and Marine Resource Sustainability in Impoverished Coastal Communities

  Full article is forthcoming in African Geographical Review.

  Citation × Citation Citation Abstract Copy Title: Assessing Policies Promoting Poverty Alleviation and Marine Resource Sustainability in Impoverished Coastal Communities Author: Stern, Michelle Full article is forthcoming in African Geographical Review. Title: Assessing Policies Promoting Poverty Alleviation and Marine Resource Sustainability in Impoverished Coastal Communities Author: Stern, Michelle Full article is forthcoming in African Geographical Review. Close