Search

Search Results

• 151. [Article] An Iterated Multiyear Simulation Model to Assess Impacts of Halibut Bycatch Limits

  Bering Sea/Aleutian Islands (BSAI) groundfish fisheries are hugely productive with 2008 – 2014 harvests averaging 1.6 million tons and generating $1.95 billion annually. The BSAI also hosts a commercial ...

  Citation × Citation Citation Abstract Copy Title: An Iterated Multiyear Simulation Model to Assess Impacts of Halibut Bycatch Limits Author: Hartley, Marcus Bering Sea/Aleutian Islands (BSAI) groundfish fisheries are hugely productive with 2008 – 2014 harvests averaging 1.6 million tons and generating $1.95 billion annually. The BSAI also hosts a commercial halibut fishery with 2013 landings of 3,500 tons and revenues of $41.5 million. Downward trends in halibut biomass combined with continued bycatch mortality in the groundfish fishery pushed the commercial harvests down to 2,000 tons in 2014, with lower harvest limits expected in 2015. Halibut bycatch mortality in the groundfish fisheries have exceeded commercial halibut harvests since 2012, and barring significant changes, bycatch will continue to exceed commercial harvests. An Iterated Multi-year Simulation (IMS) model was developed to assess future impacts to both the groundfish and commercial halibut fisheries of proposed reductions of up to 35 percent from current NMFS limits on bycatch mortality, established in the groundfish management plan. The IMS-model randomly selects from the basis years (2008 – 2013) to generate a simulated future from 2014 – 2023, in which the exploitable halibut biomass is held at 2014 estimates. Each randomly drawn year brings with it the halibut bycatch from that year, along with the groundfish harvests and revenue generated. Allowable future halibut harvests are estimated using the International Pacific Halibut Commission’s harvest policy algorithm, which nets out predicted bycatch mortality from exploitable biomass levels. After 10,000 iterations, the IMS-model yields distributions of expected bycatch and harvest levels, along with estimates of changes in the net present value of revenue over the 10-year future period for both the halibut and groundfish fisheries. Title: An Iterated Multiyear Simulation Model to Assess Impacts of Halibut Bycatch Limits Author: Hartley, Marcus Bering Sea/Aleutian Islands (BSAI) groundfish fisheries are hugely productive with 2008 – 2014 harvests averaging 1.6 million tons and generating $1.95 billion annually. The BSAI also hosts a commercial halibut fishery with 2013 landings of 3,500 tons and revenues of $41.5 million. Downward trends in halibut biomass combined with continued bycatch mortality in the groundfish fishery pushed the commercial harvests down to 2,000 tons in 2014, with lower harvest limits expected in 2015. Halibut bycatch mortality in the groundfish fisheries have exceeded commercial halibut harvests since 2012, and barring significant changes, bycatch will continue to exceed commercial harvests. An Iterated Multi-year Simulation (IMS) model was developed to assess future impacts to both the groundfish and commercial halibut fisheries of proposed reductions of up to 35 percent from current NMFS limits on bycatch mortality, established in the groundfish management plan. The IMS-model randomly selects from the basis years (2008 – 2013) to generate a simulated future from 2014 – 2023, in which the exploitable halibut biomass is held at 2014 estimates. Each randomly drawn year brings with it the halibut bycatch from that year, along with the groundfish harvests and revenue generated. Allowable future halibut harvests are estimated using the International Pacific Halibut Commission’s harvest policy algorithm, which nets out predicted bycatch mortality from exploitable biomass levels. After 10,000 iterations, the IMS-model yields distributions of expected bycatch and harvest levels, along with estimates of changes in the net present value of revenue over the 10-year future period for both the halibut and groundfish fisheries. Close

• 152. [Article] Value-Adding for Captured Fish Products by Documenting Sustainability

  The documentation of sustainability constitutes a significant opportunity for product value-adding in the captured fish sector, and a means of differentiating sustainably caught and landed fish from inferior ...

  Citation × Citation Citation Abstract Copy Title: Value-Adding for Captured Fish Products by Documenting Sustainability Author: Olsen, Petter The documentation of sustainability constitutes a significant opportunity for product value-adding in the captured fish sector, and a means of differentiating sustainably caught and landed fish from inferior alternatives. In the industry-owned R&D project WhiteFish the main objective is to create a tool for catch and processing SMEs in the captured fish supply chain that will enable them to document degree of sustainability on single batch / trip level. A number of biologic, environmental, social and economic indicators have been defined, and after initial configuration only a few daily recordings are needed to enable the generation of a “Sustainability Certificate”, highlighting degree of sustainability for the batch / trip in question in all these areas, including a rough estimate of carbon footprint. WhiteFishMaLL is the consumer-oriented follow-up to WhiteFish where, after conducting detailed interviews and getting feedback from focus groups, consumers indicated what sustainability-related information they are most interested in, and how they prefer to get access to it. Based on this, batch-specific QR-codes with link to extended product information (including sustainability information) were developed and deployed in cod and haddock supply chains, enabling environmentally conscious consumers in UK fish&chip shops to scan the code and get access to previously unavailable product information. This presentation will use the outcomes and experiences from these two projects to illustrate that value-adding for captured fish products by documenting sustainability is a very real and present possibility. Title: Value-Adding for Captured Fish Products by Documenting Sustainability Author: Olsen, Petter The documentation of sustainability constitutes a significant opportunity for product value-adding in the captured fish sector, and a means of differentiating sustainably caught and landed fish from inferior alternatives. In the industry-owned R&D project WhiteFish the main objective is to create a tool for catch and processing SMEs in the captured fish supply chain that will enable them to document degree of sustainability on single batch / trip level. A number of biologic, environmental, social and economic indicators have been defined, and after initial configuration only a few daily recordings are needed to enable the generation of a “Sustainability Certificate”, highlighting degree of sustainability for the batch / trip in question in all these areas, including a rough estimate of carbon footprint. WhiteFishMaLL is the consumer-oriented follow-up to WhiteFish where, after conducting detailed interviews and getting feedback from focus groups, consumers indicated what sustainability-related information they are most interested in, and how they prefer to get access to it. Based on this, batch-specific QR-codes with link to extended product information (including sustainability information) were developed and deployed in cod and haddock supply chains, enabling environmentally conscious consumers in UK fish&chip shops to scan the code and get access to previously unavailable product information. This presentation will use the outcomes and experiences from these two projects to illustrate that value-adding for captured fish products by documenting sustainability is a very real and present possibility. Close

• 153. [Article] Are Two Rents Better Than None? The Case for Monopoly Harvester Co-Ops

  presentation

  Citation × Citation Citation Abstract Copy Title: Are Two Rents Better Than None? The Case for Monopoly Harvester Co-Ops Author: Manning, Dale, Uchida, Hirotsugu presentation Title: Are Two Rents Better Than None? The Case for Monopoly Harvester Co-Ops Author: Manning, Dale, Uchida, Hirotsugu presentation Close

• 154. [Article] Sun-dried Mukene (Rastrineobola argentea) Value-Chain Analysis in Uganda

  This is part of the IIFET Special Session on Markets and Value Chains for Small Aquaculture & Fisheries Enterprises with a Focus on Gender that took place on 17 July 2012 in Dar Es Salaam, Tanzania in ...

  Citation × Citation Citation Abstract Copy Title: Sun-dried Mukene (Rastrineobola argentea) Value-Chain Analysis in Uganda Author: Masette, Margaret This is part of the IIFET Special Session on Markets and Value Chains for Small Aquaculture & Fisheries Enterprises with a Focus on Gender that took place on 17 July 2012 in Dar Es Salaam, Tanzania in conjunction with 16th IIFET Conference. The complete proceedings of this special session are available (http://aquafishcrsp.oregonstate.edu/Documents/Uploads/FileManager/IIFET%202012%20CRSP%20Session%20Proceedings%20Final_small.pdf) through the Aquaculture & Fisheries Collaborative Research Support Program gender web site, (http://aquafishcrsp.oregonstate.edu/Gender/). Title: Sun-dried Mukene (Rastrineobola argentea) Value-Chain Analysis in Uganda Author: Masette, Margaret This is part of the IIFET Special Session on Markets and Value Chains for Small Aquaculture & Fisheries Enterprises with a Focus on Gender that took place on 17 July 2012 in Dar Es Salaam, Tanzania in conjunction with 16th IIFET Conference. The complete proceedings of this special session are available (http://aquafishcrsp.oregonstate.edu/Documents/Uploads/FileManager/IIFET%202012%20CRSP%20Session%20Proceedings%20Final_small.pdf) through the Aquaculture & Fisheries Collaborative Research Support Program gender web site, (http://aquafishcrsp.oregonstate.edu/Gender/). Close

• 155. [Article] Reducing Post-Harvest Losses of the Artisanal Dagaa (Rastrineobola argentea) Fishery in Lake Victoria Tanzania: A Cost Benefit Analysis

  The Lake Victoria dagaa constitutes over 38% of the total fish landings from Lake Victoria in Tanzania. The fishery supports a major artisanal fishery in the country, ranking second to the Nile perch in ...

  Citation × Citation Citation Abstract Copy Title: Reducing Post-Harvest Losses of the Artisanal Dagaa (Rastrineobola argentea) Fishery in Lake Victoria Tanzania: A Cost Benefit Analysis Author: Ibengwe, Lilian, Kristófersson, Daði Már The Lake Victoria dagaa constitutes over 38% of the total fish landings from Lake Victoria in Tanzania. The fishery supports a major artisanal fishery in the country, ranking second to the Nile perch in Tanzania. However, the dagaa fishery is associated with high level of post-harvest loss (physical and quality losses) approximately 59%. The overall objective of this study was to propose cost effective management strategy to reduce dagaa post-harvest loss in Tanzania. To meet this objective a cost and benefit analysis was done, to determine whether adopting drying dagaa on racks project will reduce post-harvest loss, and hold positive public value in the future. Two categories of analysis were set i.e. private (individual) and public (Government) for a pilot district (500 fishers), the analyses were divided into five parts: 1). Assessment of all possible dagaa post-harvest losses, 2). Assessment of the cost of reducing the losses, 3). Assessment of the anticipated benefits associated with reducing the losses, 4). Evaluation of costs and benefits to determine net benefit and NPV, 5). A sensitivity analysis. From the analysis it was found that, drying racks project has positive NPV therefore it is worthwhile to be implemented in Tanzania to reduce dagaa post-harvest loss. Also sensitivity analysis indicated that NPV is sensitive and is likely to be affected by changes in sales price, while changes in investment and implementation cost were found to have no impact on NPV. By using drying racks productivity will be increased and provide sustainable livelihood to fishers and as well as increase regional trade and foreign exchange earnings to the government. Title: Reducing Post-Harvest Losses of the Artisanal Dagaa (Rastrineobola argentea) Fishery in Lake Victoria Tanzania: A Cost Benefit Analysis Author: Ibengwe, Lilian, Kristófersson, Daði Már The Lake Victoria dagaa constitutes over 38% of the total fish landings from Lake Victoria in Tanzania. The fishery supports a major artisanal fishery in the country, ranking second to the Nile perch in Tanzania. However, the dagaa fishery is associated with high level of post-harvest loss (physical and quality losses) approximately 59%. The overall objective of this study was to propose cost effective management strategy to reduce dagaa post-harvest loss in Tanzania. To meet this objective a cost and benefit analysis was done, to determine whether adopting drying dagaa on racks project will reduce post-harvest loss, and hold positive public value in the future. Two categories of analysis were set i.e. private (individual) and public (Government) for a pilot district (500 fishers), the analyses were divided into five parts: 1). Assessment of all possible dagaa post-harvest losses, 2). Assessment of the cost of reducing the losses, 3). Assessment of the anticipated benefits associated with reducing the losses, 4). Evaluation of costs and benefits to determine net benefit and NPV, 5). A sensitivity analysis. From the analysis it was found that, drying racks project has positive NPV therefore it is worthwhile to be implemented in Tanzania to reduce dagaa post-harvest loss. Also sensitivity analysis indicated that NPV is sensitive and is likely to be affected by changes in sales price, while changes in investment and implementation cost were found to have no impact on NPV. By using drying racks productivity will be increased and provide sustainable livelihood to fishers and as well as increase regional trade and foreign exchange earnings to the government. Close

• 156. [Article] Fishery Resource Management in Japanese Coastal Areas: A Historical and Institutional Overview

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Fishery Resource Management in Japanese Coastal Areas: A Historical and Institutional Overview Author: Makino, Mitsutaku Research Paper Title: Fishery Resource Management in Japanese Coastal Areas: A Historical and Institutional Overview Author: Makino, Mitsutaku Research Paper Close

• 157. [Article] Inefficient Decisions, Emergencies and the Benefits of Delegated Power: Measuring Commission Power in EC Fisheries Policy-Making

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Inefficient Decisions, Emergencies and the Benefits of Delegated Power: Measuring Commission Power in EC Fisheries Policy-Making Author: Rahming, Anne J. Research Paper Title: Inefficient Decisions, Emergencies and the Benefits of Delegated Power: Measuring Commission Power in EC Fisheries Policy-Making Author: Rahming, Anne J. Research Paper Close

• 158. [Article] Parallel collapses of Canadian cod (Gadus morhua) and European hake (Merluccius merluccius) fisheries: "Chronicle of a death foretold"

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Parallel collapses of Canadian cod (Gadus morhua) and European hake (Merluccius merluccius) fisheries: "Chronicle of a death foretold" Author: Brethes, Jean Claude, Agundez, Jose A. Research Paper Title: Parallel collapses of Canadian cod (Gadus morhua) and European hake (Merluccius merluccius) fisheries: "Chronicle of a death foretold" Author: Brethes, Jean Claude, Agundez, Jose A. Research Paper Close

• 159. [Article] The changes made to the management of Tasmania's abalone, rock lobster and scalefish fisheries over fisheries over the last 20 years, and the resource, social and economic ramifications of those changes

  Research Paper

  Citation × Citation Citation Abstract Copy Title: The changes made to the management of Tasmania's abalone, rock lobster and scalefish fisheries over fisheries over the last 20 years, and the resource, social and economic ramifications of those changes Author: Pullen, Grant, Riley, Sean, Witt, Dennis John, Revill, Hilary Research Paper Title: The changes made to the management of Tasmania's abalone, rock lobster and scalefish fisheries over fisheries over the last 20 years, and the resource, social and economic ramifications of those changes Author: Pullen, Grant, Riley, Sean, Witt, Dennis John, Revill, Hilary Research Paper Close

• 160. [Article] Characterization of the California Live Bait Fishery

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Characterization of the California Live Bait Fishery Author: Hilger, James Abstract only. Title: Characterization of the California Live Bait Fishery Author: Hilger, James Abstract only. Close