Refinar búsqueda
Resultados 1-10 de 1,806
Viewpoint: The Social Dimension in Icelandic Fisheries Governance Texto completo
2017
Chambers, Catherine | Kokorsch, Matthias
Fisheries are a complex mixture of social, political, economic, and biological aspects, and often biological or economic end goals are given priority in fisheries governance. However, there is a growing trend around the world to include non-economic social objectives in fisheries management schemes, e.g., supporting rural communities, increasing opportunities for newcomers or part-time fishermen, or providing equitable access for culturally and historically important fisheries. In Iceland, fisheries management has given biological and economic goals' precedence over social goals, and there is no formal inclusion of a social science advisory body or formalized direct input from all relevant stakeholders in the fisheries governance process. Non-economic social sciences such as geography, anthropology, sociology, and political science can add important information and considerations that in turn make fisheries more sustainable in the long run. In this paper, we explain the role of social science in fisheries governance, explore how social aspects are addressed in other fisheries governance schemes, and review highlights from fisheries social science research in Iceland. We hope to generate a meaningful conversation regarding the possibilities of a modern, pioneering fisheries' governance process in Iceland where social, economic, and biological goals and research are all given equal attention.
Mostrar más [+] Menos [-]Population genetics of pike, genus Esox (Actinopterygii, Esocidae), in Northern Italy: evidence for mosaic distribution of native, exotic and introgressed populations Texto completo
2017
Gandolfi, Andrea | Ferrari, Claudio | Crestanello, Barbara | Girardi, Matteo | Lucentini, Livia | Meraner, Andreas
Esox flaviae represents the native esocid species of the Italian peninsula at present potentially highly threatened by the diffusion of exotic E. lucius. Here, we present a novel mtDNA (N = 272) and microsatellite (N = 275) dataset including 13 test and 3 reference samples, aimed to delineate the distribution of the native as well as the exotic species and to unravel potential introgressive hybridisation between the two species in Northern Italy. We highlight a complex mosaic distribution of both species, with contrasting occurrence even between neighbouring sites. Significant genetic substructure is still observed within E. flaviae, while the dispersal of the invader seems to be promoted by restocking actions. In addition, we prove the existence of introgressive hybridisation between native and exotic pikes. Here, gender-biased hybridisation is suggested, with native E. flaviae constituting the predominant ‘mother species’ in the hybridisation process. Finally, we underline the need for a revision of fisheries management regulations, for which a nation-wide and exhaustive genetic screening in the near future should build the scientific basis.
Mostrar más [+] Menos [-]Could the obligation to land undersized individuals increase the black market for juveniles: evidence from the Mediterranean? Texto completo
2017
Bellido, Jose M | García‐Rodriguez, Mariano | García‐Jiménez, Teresa | González‐Aguilar, María | Carbonell‐Quetglas, Ana
The latest Green Paper on the EU Common Fisheries Policy (CFP) identified the high level of discards in Europe as one of the structural weaknesses of the current CFP. The new CFP introduces a discard ban in European waters, with an obligation to land all regulated species. The fishing management system in the Mediterranean is based on effort control and technical measures, and this is raising some particular concerns about the effective implementation of the discard ban. With the exception of bluefin tuna (Thunnus thynnus, Scombridae), there are no quotas in the Mediterranean and this regulation affects all regulated species with the minimum landing size. Under these circumstances, the discard ban may lead to an increase in the amount of juvenile fish caught, because such catches are not counted against a given quota, as is the case in the Atlantic fisheries, and thus, there is no incentive to avoid catching them. On the contrary, the obligation to land the juveniles that are now discarded and their subsequent fishmeal processing might even become commercially interesting. One possible consequence of the new regulation may be an increase in the illegal marketing of fish below the minimum size. The landing, storage and transportation of juveniles will all be legal, and this may simplify their commercialization via the black market. The discard ban and landing obligation should be accompanied by other measures to ensure their successful implementation, including the agreement of the fishing sector to comply with the rules and regulations.
Mostrar más [+] Menos [-]The role of fish and fisheries in recovering from natural hazards: Lessons learned from Vanuatu Texto completo
2017
n | r. | eriksson | andrew | k. | pakoa | h. | j. | albert | s. | warren
The role of fish and fisheries in recovering from natural hazards: Lessons learned from Vanuatu Texto completo
2017
n | r. | eriksson | andrew | k. | pakoa | h. | j. | albert | s. | warren
Eriksson, H., Albert, J., Albert, S., Warren, R., Pakoa, K., Andrew, N. (2017) Environmental Science & Policy, 76: 50â??58 | Coastal fisheries provide staple food and sources of livelihood in Pacific Island countries, and securing a sustainable supply is recognised as a critical priority for nutrition security. This study sought to better understand the role of fish for Pacific Island communities during disasters and in disaster recovery. To evaluate community impacts and responses after natural disasters, focus group discussions were held with men and women groups at ten sites across Shefa, Tafea, Malampa and Sanma provinces in Vanuatu. This study illustrates that fish, fishing, and fisheries management is at the center of disaster relief and recovery for Pacific Island communities
Mostrar más [+] Menos [-]The role of fish and fisheries in recovering from natural hazards: Lessons learned from Vanuatu Texto completo
Eriksson, H. | Albert, J. | Albert, S. | Warren, R. | Pakoa, K. | Andrew, N.
Coastal fisheries provide staple food and sources of livelihood in Pacific Island countries, and securing a sustainable supply is recognised as a critical priority for nutrition security. This study sought to better understand the role of fish for Pacific Island communities during disasters and in disaster recovery. To evaluate community impacts and responses after natural disasters, focus group discussions were held with men and women groups at ten sites across Shefa, Tafea, Malampa and Sanma provinces in Vanuatu. This study illustrates that fish, fishing, and fisheries management is at the center of disaster relief and recovery for Pacific Island communities.
Mostrar más [+] Menos [-]The importance of qualitative social research for effective fisheries management Texto completo
2017
voyer | a.m. | k. | m. | mauli | smith | fabinyi | j. | mazur | payne | s. | g | kinch | n. | barclay
The importance of qualitative social research for effective fisheries management Texto completo
2017
voyer | a.m. | k. | m. | mauli | smith | fabinyi | j. | mazur | payne | s. | g | kinch | n. | barclay
Barclay, K., Voyer, M., Mazur, N., Payne, A.M., Mauli, S., Kinch, J., Fabinyi, M., Smith, G. (2017) Fisheries Research, 186(Part 2): 426-438 | Over recent decades it has become widely accepted that managing fisheries resources means managing human behaviour, and so understanding social and economic dynamics is just as important as understanding species biology and ecology. Until recently, fisheries managers and researchers have struggled to develop effective methods and data for social and economic analysis that can integrate with the predominantly biological approaches to fisheries management. The field is now growing fast, however, and globally, researchers are developing and testing new methods. This paper uses three divergent case studies to demonstrate the value of using qualitative social science approaches to complement more conventional quantitative methods to improve the knowledge base for fisheries management
Mostrar más [+] Menos [-]The importance of qualitative social research for effective fisheries management Texto completo
2017
Barclay, Kate | Voyer, Michelle | Mazur, Nicole | Payne, Anne Maree | Mauli, Senoveva | Kinch, Jeff | Fabinyi, Michael | Smith, Graeme
Over recent decades it has become widely accepted that managing fisheries resources means managing human behaviour, and so understanding social and economic dynamics is just as important as understanding species biology and ecology. Until recently, fisheries managers and researchers have struggled to develop effective methods and data for social and economic analysis that can integrate with the predominantly biological approaches to fisheries management. The field is now growing fast, however, and globally, researchers are developing and testing new methods. This paper uses three divergent case studies to demonstrate the value of using qualitative social science approaches to complement more conventional quantitative methods to improve the knowledge base for fisheries management. In all three cases, qualitative interview and document review methods enabled broad surveying to explore the research questions in particular contexts and identified where quantitative tools could be most usefully applied. In the first case (the contribution of commercial fisheries to coastal communities in eastern Australia), a wellbeing analysis identified the social benefits from particular fisheries, which can be used to identify the social impacts of different fisheries management policies. In the second case (a gender analysis of fisheries of small islands in the Pacific), analysis outlined opportunities and constraints along fisheries supply chains, illuminated factors inhibiting community development and identified ecological factors that are typically overlooked in conventional fisheries management. In the third case (sea cucumber fisheries in Papua New Guinea), an interactive governance analysis assessed how well fisheries management tools fit the ecological, social and economic reality of the fishery and the trade in its products, including market influences and stakeholder values. The qualitative approach adopted in these three case studies adds a new dimension to understanding fisheries that is not possible with a focus solely on quantitative data. With the development of new policies on release programs (stock enhancement, restocking) and artificial reefs, and the momentum to use these interventions from recreational fishing groups, the qualitative approach will provide an important contribution to understanding their wider costs and benefits.
Mostrar más [+] Menos [-]The importance of qualitative social research for effective fisheries management Texto completo
2017
Barclay, K. | Voyer, M. | Mazur, N. | Payne, A.M. | Mauli, S. | Kinch, J. | Fabinyi, M. | Smith, G.
Over recent decades it has become widely accepted that managing fisheries resources means managing human behaviour, and so understanding social and economic dynamics is just as important as understanding species biology and ecology. Until recently, fisheries managers and researchers have struggled to develop effective methods and data for social and economic analysis that can integrate with the predominantly biological approaches to fisheries management. The field is now growing fast, however, and globally, researchers are developing and testing new methods. This paper uses three divergent case studies to demonstrate the value of using qualitative social science approaches to complement more conventional quantitative methods to improve the knowledge base for fisheries management.
Mostrar más [+] Menos [-]Redefining community based on place attachment in a connected world Texto completo
2017
t. | curnock | blythe | l. | a. | james | marshall | n.a | m. | faulkner | helen | w.n. | j. | gurney | adger | g.g.
Redefining community based on place attachment in a connected world Texto completo
2017
t. | curnock | blythe | l. | a. | james | marshall | n.a | m. | faulkner | helen | w.n. | j. | gurney | adger | g.g.
Gurney, G.G., Blythe, J., Helen, A., Adger, W.N., Curnock, M., Faulkner, L., James, T., Marshall, N.A. (2017) Proceedings of the National Academy of Sciences of the United States of America, 114(38): 10077â??10082 (open access) | The concept of community is often used in environmental policy to foster environmental stewardship and public participation, crucial prerequisites of effective management. However, prevailing conceptualizations of community based on residential location or resource use are limited with respect to their utility as surrogates for communities of shared environment-related interests, and because of the localist perspective they entail. Thus, addressing contemporary sustainability challenges, which tend to involve transnational social and environmental interactions, urgently requires additional approaches to conceptualizing community that are compatible with current globalization. We propose a framing for redefining community based on place attachment (i.e., the bonds people form with places) in the context of Australiaâ??s Great Barrier Reef, a World Heritage Area threatened by drivers requiring management and political action at scales beyond the local
Mostrar más [+] Menos [-]Redefining community based on place attachment in a connected world Texto completo
2017
Gurney, G.G. | Blythe, J. | Helen, A. | Adger, W.N. | Curnock, M. | Faulkner, L. | James, T. | Marshall, N.A.
The concept of community is often used in environmental policy to foster environmental stewardship and public participation, crucial prerequisites of effective management. However, prevailing conceptualizations of community based on residential location or resource use are limited with respect to their utility as surrogates for communities of shared environment-related interests, and because of the localist perspective they entail. Thus, addressing contemporary sustainability challenges, which tend to involve transnational social and environmental interactions, urgently requires additional approaches to conceptualizing community that are compatible with current globalization. We propose a framing for redefining community based on place attachment (i.e., the bonds people form with places) in the context of Australia's Great Barrier Reef, a World Heritage Area threatened by drivers requiring management and political action at scales beyond the local.
Mostrar más [+] Menos [-]Managing mixed-stock fisheries: genotyping multi-SNP haplotypes increases power for genetic stock identification Texto completo
2017
McKinney, Garrett J. | Seeb, James E. | Seeb, Lisa W.
Managing mixed-stock fisheries: genotyping multi-SNP haplotypes increases power for genetic stock identification Texto completo
2017
McKinney, Garrett J. | Seeb, James E. | Seeb, Lisa W.
A common challenge for fisheries management is resolving the relative contribution of closely related populations where accuracy of genetic assignment may be limited. An overlooked method for increasing assignment accuracy is the use of multi-SNP (single nucleotide polymorphism) haplotypes rather than single-SNP genotypes. Haplotypes increase power for detecting population structure, and loci derived from next-generation sequencing methods often contain multiple SNPs. We evaluated the utility of multi-SNP haplotyping for mixture analysis in western Alaska Chinook salmon (Oncorhynchus tshawytscha). Multi-SNP haplotype data increased the accuracy of mixture analysis for closely related populations by up to seven percentage points relative to single-SNP genotype data for a set of 500 loci; 90% accuracy was achievable with as few as 150 loci with multi-SNP haplotypes but required at least 300 loci with single-SNP genotypes. Individual assignment to reporting groups showed an even greater increase in accuracy of up to 17 percentage points when multi-SNP haplotypes were used. Haplotyping multiple SNPs shows promise to improve the accuracy of assigning unknown fish to population of origin whenever haplotype data are available.
Mostrar más [+] Menos [-]Managing mixed-stock fisheries: genotyping multi-SNP haplotypes increases power for genetic stock identification Texto completo
2017 | 2016
McKinney, Garrett J. | Seeb, James E | Seeb, Lisa W.
Assignment methods that use genetic data to allocate migrating fish to population of origin are a powerful tool to help manage the harvest of mixed-stock fisheries. A common challenge for fishery applications is resolving the relative contribution of closely related populations where assignment accuracy may be limited. An overlooked method for increasing assignment accuracy is the use of multi-SNP haplotypes rather than single-SNP genotypes. Haplotypes increase power for detecting population structure, and loci derived from next-generation sequencing methods often contain multiple SNPs. We evaluated the utility of multi-SNP haplotyping for mixture analysis in Western Alaska Chinook salmon. Multi-SNP haplotype data increased the accuracy of mixture analysis for closely related populations by up to seven percentage points relative to single-SNP genotype data for a set of 500 loci; 90% accuracy was achievable with as few as 150 loci with multi-SNP haplotypes but required at least 300 loci with single-SNP genotypes. Individual assignment to reporting groups showed an even greater increase in accuracy of up to 17 percentage points when multi-SNP haplotypes were used. Haplotyping multiple SNPs shows promise to improve the accuracy of assigning unknown fish to population of origin whenever haplotype data are available. | The presentation of the authors' names and (or) special characters in the title of the pdf file of the accepted manuscript may differ slightly from what is displayed on the item page. The information in the pdf file of the accepted manuscript reflects the original submission by the author.
Mostrar más [+] Menos [-]Ecoviability for ecosystem‐based fisheries management Texto completo
2017
Doyen, L. (Luc) | Béné, Christophe | Bertignac, Michel | Blanchard, Fabian | Cissé, Abdoul Ahad | Dichmont, Catherine | Gourguet, Sophie | Guyader, Olivier | Hardy, Pierre‐Yves | Jennings, Sarah | Little, Lorne Richard | Macher, Claire | Mills, David Jonathan | Noussair, Ahmed | Pascoe, Sean | Pereau, Jean‐Christophe | Sanz, Nicolas | Schwarz, Anne‐Maree | Smith, Tony | Thébaud, Olivier
Reconciling food security, economic development and biodiversity conservation is a key challenge, especially in the face of the demographic transition characterizing many countries in the world. Fisheries and marine ecosystems constitute a difficult application of this bio‐economic challenge. Many experts and scientists advocate an ecosystem approach to manage marine socio‐ecosystems for their sustainability and resilience. However, the ways by which to operationalize ecosystem‐based fisheries management (EBFM) remain poorly specified. We propose a specific methodological framework—viability modelling—to do so. We show how viability modelling can be applied using four contrasted case‐studies: two small‐scale fisheries in South America and Pacific and two larger‐scale fisheries in Europe and Australia. The four fisheries are analysed using the same modelling framework, structured around a set of common methods, indicators and scenarios. The calibrated models are dynamic, multispecies and multifleet and account for various sources of uncertainty. A multicriteria evaluation is used to assess the scenarios’ outcomes over a long time horizon with different constraints based on ecological, social and economic reference points. Results show to what extent the bio‐economic and ecosystem risks associated with the adoption of status quo strategies are relatively high and challenge the implementation of EBFM. In contrast, strategies called ecoviability or co‐viability strategies, that aim at satisfying the viability constraints, reduce significantly these ecological and economic risks and promote EBFM. The gains associated with those ecoviability strategies, however, decrease with the intensity of regulations imposed on these fisheries.
Mostrar más [+] Menos [-]Designation and management of large‐scale MPAs drawing on the experiences of CCAMLR Texto completo
2017
Everson, Inigo
With the adoption of the United Nations Law of the Sea came the need for effective worldwide control of marine fisheries. Initially centred on single species, the tasks have extended to ecosystem‐based management through the concept of marine‐protected areas into habitats and biodiversity. These diverse requirements have placed enhanced responsibilities on fisheries management organizations. Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) has successfully developed effective management measures for the Southern Ocean but has encountered difficulties in establishing marine‐protected areas. Key to the success of CCAMLR has been the establishment of conservation measures on clearly defined topics through decision making by consensus. It is argued that the problems that CCAMLR has encountered in establishing marine‐protected areas centre on the range of features, in terms of stakeholder interests, to be afforded protection allied to problems with the consensus process. In this paper, the approaches of CCAMLR in converting the conceptual framework of treaty language into practical management measures using consensus are discussed in relation to the manner in which marine‐protected areas might be established within other fisheries management organizations. It is concluded that the most effective approach is as a composite of strictly focussed conservation measures the sum of which cover all facets of a marine‐protected area. This approach has the further advantage that individual components can be changed without opening the whole legal instrument to re‐negotiation.
Mostrar más [+] Menos [-]Evaluation of species distribution forecasts: a potential predictive tool for reducing incidental catch in pelagic fisheries1 Texto completo
2017
Turner, Sara M. | Hare, Jonathan A. | Manderson, John P. | Richardson, David E. | Hoey, John J.
Nontarget catch restrictions are becoming common in fisheries management. We test a potential tool for reducing nontargeted catch that combines species’ distribution models and ocean forecast models. We evaluated our approach for Atlantic herring (Clupea harengus), Atlantic mackerel (Scomber scombrus), alewife (Alosa pseudoharengus), and blueback herring (Alosa aestivalis). Catch of the latter two species is capped in commercial fisheries of the former two species. Ocean forecasts were derived from a data-assimilative ocean forecast model that predicts conditions 0–2 days into the future. Observed oceanographic conditions were derived from CTD casts and observed fish presence–absence was derived from fishery-independent bottom trawl collections. Species distribution models were used to predict presence–absence based on observed and forecasted oceanographic conditions, and predictions for both were very similar. Thus, most of the error in predicted distributions was generated by the species distribution models, not the oceanographic forecast model. Understanding how predictions based on forecasted conditions compare with predictions from observed conditions is key to developing an incidental catch forecast tool to help industry reduce nontarget catches.
Mostrar más [+] Menos [-]