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• 1. [Article] Spatial Integration of Freshwater Fish Markets in the Northern Baltic Sea Area

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Spatial Integration of Freshwater Fish Markets in the Northern Baltic Sea Area Author: Honkanen, Asmo, Nielsen, Max, Virtanen, Jarno, Setala, Jari, Laitinen, Jukka, Saarni, Kaija Research Paper Title: Spatial Integration of Freshwater Fish Markets in the Northern Baltic Sea Area Author: Honkanen, Asmo, Nielsen, Max, Virtanen, Jarno, Setala, Jari, Laitinen, Jukka, Saarni, Kaija Research Paper Close

• 2. [Article] Indicators for Ecosystem Externalities in Fishing

  Ecosystem externalities arise when one use of an ecosystem affects its other uses through the production functions of the ecosystem. We use simulations from a size-spectrum ecosystem model to investigate ...

  Citation × Citation Citation Abstract Copy Title: Indicators for Ecosystem Externalities in Fishing Author: Andersen, Ken H., Vestergaard, Niels, Ravn-Jonsen, Lars Ecosystem externalities arise when one use of an ecosystem affects its other uses through the production functions of the ecosystem. We use simulations from a size-spectrum ecosystem model to investigate the ecosystem externality created by fishing of multiple species. The model is based upon general ecological principles and is calibrated to the North Sea. Two fleets are considered: a `forage fish’ fleet targeting species that mature at small sizes and a `large fish’ fleet targeting large piscivorous species. Based on the marginal analysis of the present value of the rent, we develop a benefit indicator that explicitly divides the consequences of fishing into internal and external benefits. This analysis demonstrates that the forage fish fleet has a notable economic impact on the large fish fleet, but the reverse is not true. The impact can be either negative or positive, which entails that for optimal economic exploitation, the forage fishery has to be adjusted according to the large fish fishery. With the present large fish fishery in the North Sea, the two fisheries are well adjusted; however, the present combined exploration level is too high to achieve optimal economic rents. Title: Indicators for Ecosystem Externalities in Fishing Author: Andersen, Ken H., Vestergaard, Niels, Ravn-Jonsen, Lars Ecosystem externalities arise when one use of an ecosystem affects its other uses through the production functions of the ecosystem. We use simulations from a size-spectrum ecosystem model to investigate the ecosystem externality created by fishing of multiple species. The model is based upon general ecological principles and is calibrated to the North Sea. Two fleets are considered: a `forage fish’ fleet targeting species that mature at small sizes and a `large fish’ fleet targeting large piscivorous species. Based on the marginal analysis of the present value of the rent, we develop a benefit indicator that explicitly divides the consequences of fishing into internal and external benefits. This analysis demonstrates that the forage fish fleet has a notable economic impact on the large fish fleet, but the reverse is not true. The impact can be either negative or positive, which entails that for optimal economic exploitation, the forage fishery has to be adjusted according to the large fish fishery. With the present large fish fishery in the North Sea, the two fisheries are well adjusted; however, the present combined exploration level is too high to achieve optimal economic rents. Close

• 3. [Article] Price and Quantity Indices for Aquaculture Production in Europe

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Price and Quantity Indices for Aquaculture Production in Europe Author: Millán, Joaquín A., Aldaz, Natalia Research Paper Title: Price and Quantity Indices for Aquaculture Production in Europe Author: Millán, Joaquín A., Aldaz, Natalia Research Paper Close

• 4. [Article] Causality and Price Transmission Between Fish Prices: New Evidence from Greece and UK

  This paper re-examines the evidence of causality and price transmission between fish prices of main species landed into Piraeus (Greece) and Cornwall (UK). To complete the analysis of cointegration and ...

  Citation × Citation Citation Abstract Copy Title: Causality and Price Transmission Between Fish Prices: New Evidence from Greece and UK Author: Floros, Christos This paper re-examines the evidence of causality and price transmission between fish prices of main species landed into Piraeus (Greece) and Cornwall (UK). To complete the analysis of cointegration and causality, we use the data of Floros and Failler (2004) and Avdelas (2004). Our paper uses the Bivariate Generalised Autoregressive Conditional Heteroscedastic (BGARCH) model. The Bivariate cointegration model (with GARCH error structure) incorporates a time varying conditional correlation coefficient between fish prices and generates time-varying covariances. The results from BGARCH show evidence of volatility clustering in the change of fish prices, and report that most species lead Hake (this is stronger for Greece). Furthermore, the estimates of price transmission indicate that the rate of change of Shrimp/Dentex partially adjusts to the rate of change of Hake prices. Our results suggest significant imperfect price transmission between species (this is stronger for Greece). Title: Causality and Price Transmission Between Fish Prices: New Evidence from Greece and UK Author: Floros, Christos This paper re-examines the evidence of causality and price transmission between fish prices of main species landed into Piraeus (Greece) and Cornwall (UK). To complete the analysis of cointegration and causality, we use the data of Floros and Failler (2004) and Avdelas (2004). Our paper uses the Bivariate Generalised Autoregressive Conditional Heteroscedastic (BGARCH) model. The Bivariate cointegration model (with GARCH error structure) incorporates a time varying conditional correlation coefficient between fish prices and generates time-varying covariances. The results from BGARCH show evidence of volatility clustering in the change of fish prices, and report that most species lead Hake (this is stronger for Greece). Furthermore, the estimates of price transmission indicate that the rate of change of Shrimp/Dentex partially adjusts to the rate of change of Hake prices. Our results suggest significant imperfect price transmission between species (this is stronger for Greece). Close

• 5. [Article] Estimating Heterogeneous Primal Capacity and Capacity Utilization Measures in a Multi-Species Fishery

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Estimating Heterogeneous Primal Capacity and Capacity Utilization Measures in a Multi-Species Fishery Author: Felthoven, Ronald, Schnier, Kurt Research Paper Title: Estimating Heterogeneous Primal Capacity and Capacity Utilization Measures in a Multi-Species Fishery Author: Felthoven, Ronald, Schnier, Kurt Research Paper Close

• 6. [Article] Testing the Cost Effectiveness of Manual Removal Strategies for the Containment of Invasive Lionfish Stocks in a Caribbean Reef

  Two species of the Indo-Pacific lionfish (Pterois miles and P. volitans) have rapidly expanded throughout the Gulf of Mexico, mid- and south Atlantic and the Caribbean following their introduction to Florida ...

  Citation × Citation Citation Abstract Copy Title: Testing the Cost Effectiveness of Manual Removal Strategies for the Containment of Invasive Lionfish Stocks in a Caribbean Reef Author: Valderrama, Diego, Fields, Kathryn Ann H. Two species of the Indo-Pacific lionfish (Pterois miles and P. volitans) have rapidly expanded throughout the Gulf of Mexico, mid- and south Atlantic and the Caribbean following their introduction to Florida coastal waters during the mid-1980s through releases from marine aquaria. There is overwhelming scientific agreement on the threats that this invasion poses to a wide range of native species, including grunts, snappers, and groupers. Because eradication of lionfish is unfeasible, scientists and conservationists are urging the implementation of lionfish management plans in order to reduce the environmental and economic impacts of the invasion to a manageable scale. Recent studies indicate that persistent removal of lionfish by spearheading does help control lionfish populations and help native fishing rebound. Through mathematical modeling and field tests, researchers have found that reducing lionfish stocks by about 75 to 90 percent leads to the rapid recovery of native fish numbers (Green et al. 2014). Data on prey fish and lionfish densities as well as spearheading catch rates were collected from lionfish derbies held at the Bacalar Chico Marine Reserve, Belize, in 2014. These data were used to estimate reef-specific target lionfish densities leading to the recovery of native prey species in the marine reserve as predicted by the Green et al. (2014) model. The fishing costs involved in reaching the target densities were also estimated to evaluate the overall effectiveness of manual removal techniques as a management strategy for invasive lionfish stocks. Title: Testing the Cost Effectiveness of Manual Removal Strategies for the Containment of Invasive Lionfish Stocks in a Caribbean Reef Author: Valderrama, Diego, Fields, Kathryn Ann H. Two species of the Indo-Pacific lionfish (Pterois miles and P. volitans) have rapidly expanded throughout the Gulf of Mexico, mid- and south Atlantic and the Caribbean following their introduction to Florida coastal waters during the mid-1980s through releases from marine aquaria. There is overwhelming scientific agreement on the threats that this invasion poses to a wide range of native species, including grunts, snappers, and groupers. Because eradication of lionfish is unfeasible, scientists and conservationists are urging the implementation of lionfish management plans in order to reduce the environmental and economic impacts of the invasion to a manageable scale. Recent studies indicate that persistent removal of lionfish by spearheading does help control lionfish populations and help native fishing rebound. Through mathematical modeling and field tests, researchers have found that reducing lionfish stocks by about 75 to 90 percent leads to the rapid recovery of native fish numbers (Green et al. 2014). Data on prey fish and lionfish densities as well as spearheading catch rates were collected from lionfish derbies held at the Bacalar Chico Marine Reserve, Belize, in 2014. These data were used to estimate reef-specific target lionfish densities leading to the recovery of native prey species in the marine reserve as predicted by the Green et al. (2014) model. The fishing costs involved in reaching the target densities were also estimated to evaluate the overall effectiveness of manual removal techniques as a management strategy for invasive lionfish stocks. Close

• 7. [Article] Global Ex-Vessel Fish Price Database: Construction and Applications

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Global Ex-Vessel Fish Price Database: Construction and Applications Author: Sumaila, Ussif Rashid, Pauly, Daniel, Marsden, A. Dale, Watson, Reg Research Paper Title: Global Ex-Vessel Fish Price Database: Construction and Applications Author: Sumaila, Ussif Rashid, Pauly, Daniel, Marsden, A. Dale, Watson, Reg Research Paper Close

• 8. [Article] A Bioeconomic Simulation Model of a Fishery Using Area Rotation Under Uncertainty

  Research Paper

  Citation × Citation Citation Abstract Copy Title: A Bioeconomic Simulation Model of a Fishery Using Area Rotation Under Uncertainty Author: Quigley-Lemieux, Kathryn, Sylvia, Gil Research Paper Title: A Bioeconomic Simulation Model of a Fishery Using Area Rotation Under Uncertainty Author: Quigley-Lemieux, Kathryn, Sylvia, Gil Research Paper Close

• 9. [Article] Presentation of the newly launched INCOFISH portal at www.incofish.org

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Presentation of the newly launched INCOFISH portal at www.incofish.org Author: Opitz, Silvia Research Paper Title: Presentation of the newly launched INCOFISH portal at www.incofish.org Author: Opitz, Silvia Research Paper Close

• 10. [Article] Trade Restrictions and the Development of Salmon Production

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Trade Restrictions and the Development of Salmon Production Author: Asche, Frank Research Paper Title: Trade Restrictions and the Development of Salmon Production Author: Asche, Frank Research Paper Close