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Registros recuperados: 6
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Diagnostic des pêcheries du poulpe (Octopus vulgaris) dans les eaux sous juridiction sénégalaise: Rapport définitif OceanDocs
Les seiches, poulpes, calmars et nautiles forment la Classe des Céphalopodes de l’Embranchement des Mollusques de grande taille, exclusivement marins. Leur croissance est rapide, leur arrivée à la maturité sexuelle précoce et leur durée de vie courte. Le poulpe a une très large aire de distribution incluant les eaux maritimes tropicales. Elle abonde surtout en Méditerranée, dans les eaux japonaises (Océan Pacifique) et dans l’Atlantique Centre-Est qui s’étend du Maroc à l’Angola. La pêche du poulpe s’est développée au large du Sahara dans les années 1960. Son importance dans la zone du COPACE notamment, au Maroc, en Mauritanie et au Sénégal, s’expliquerait par la raréfaction de ses prédateurs potentiels (Serranidés, Sparidés). Au Sénégal, elle est...
Tipo: Working Paper Palavras-chave: Cephalopod fisheries; Reproduction; Fishing gear; Fishery industry; Catching methods; Fishing nets; Season regulations; Fishing effort; Fishing rights; Fishery regulations; Living resources; Commercial legislation; Octopus fisheries; Fishery statistics.
Ano: 2009 URL: http://hdl.handle.net/1834/4573
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Individual transferable quota contribution to environmental stewardship: a theory in need of validation Ecology and Society
van Putten, Ingrid; CSIRO Wealth from Oceans National Research Flagship, CSIRO Marine and Atmospheric Research; Ingrid.vanputten@csiro.au; Boschetti, Fabio; CSIRO Wealth from Oceans National Research Flagship, CSIRO Marine and Atmospheric Research; fabio.Boschetti@csiro.au; Fulton, Elizabeth A.; CSIRO Wealth from Oceans National Research Flagship, CSIRO Marine and Atmospheric Research; beth.fulton@csiro.au; Smith, Anthony D. M.; CSIRO Wealth from Oceans National Research Flagship, CSIRO Marine and Atmospheric Research; tony.d.smith@csiro.au; Thebaud, Olivier; CSIRO Wealth from Oceans National Research Flagship, CSIRO Marine and Atmospheric Research; olivier.thebaud@csiro.au.
We explored the extent to which (1) individual transferable quotas (ITQs) may lead to changes in environmental stewardship and (2) environmental stewardship may in turn contribute to explain the success or otherwise of ITQs in meeting sustainability objectives. ITQs are an example of incentive-based fisheries management in which fishing rights can be privately owned and traded. ITQs are aimed at resolving the problems created by open-access fisheries. ITQs were proposed to promote economic efficiency, and there is growing empirical evidence that ITQs meet a number of economic and social fisheries management objectives. Even though improved stock status arises as a consequence of the total allowable catch levels implemented together with ITQs, the effect is...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Comanagement; Environmental ethics; Fisheries management; Fishing rights; Stewardship.
Ano: 2014
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Individual transferable quota contribution to environmental stewardship: a theory in need of validation ArchiMer
Van Putten, Ingrid; Boschetti, Fabio; Fulton, Elizabeth A.; Smith, Anthony D.m.; Thebaud, Olivier.
We explored the extent to which (1) individual transferable quotas (ITQs) may lead to changes in environmental stewardship and (2) environmental stewardship may in turn contribute to explain the success or otherwise of ITQs in meeting sustainability objectives. ITQs are an example of incentive-based fisheries management in which fishing rights can be privately owned and traded. ITQs are aimed at resolving the problems created by open-access fisheries. ITQs were proposed to promote economic efficiency, and there is growing empirical evidence that ITQs meet a number of economic and social fisheries management objectives. Even though improved stock status arises as a consequence of the total allowable catch levels implemented together with ITQs, the effect is...
Tipo: Text Palavras-chave: Comanagement; Environmental ethics; Fisheries management; Fishing rights; Stewardship.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00250/36165/34720.pdf
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Les analyses statistiques multivariées : application sur deux espèces de Soleidea des cotes Tunisiennes OceanDocs
Glid, A.; Mosbah, S.; Ghorbel, M.; Bradai, M.N..
Une analyse statistique multivariée a été entreprise sur la base de 11 caractères métriques et 10 caractères méristiques de 3 échantillons de Soleidae appartenant à 2 espèces différentes en provenance de 3 localités distinctes : S. aegyptiaca de Sfax et de Djerba et S. senegalensis de Bizerte. Cette étude a montré une différence significative de certains caractères entre les deux espèces d’une part et au sein de la même espèce péchée dans 2 localités différentes. Le recours aux fonctions canoniques a permis d’élaborer des équations pouvant classer un échantillon dans l’espèce adéquate et dans la localité de sa capture. Une étude complémentaire intégrant toutes les espèces de cette famille, morphologiquement très semblable, pourrait être une méthodologie de...
Tipo: Journal Contribution Palavras-chave: Animal morphology; Fishery regulations; Fishing rights; Meristic counts; Multivariate analysis; Statistical analysis; Taxonomy; Variance analysis; Fishery policies.
Ano: 2009 URL: http://hdl.handle.net/1834/4488
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Matching Social and Ecological Systems in Complex Ocean Fisheries Ecology and Society
Wilson, James A.; University of Maine; Jwilson@maine.edu.
This paper considers ocean fisheries as complex adaptive systems and addresses the question of how human institutions might be best matched to their structure and function. Ocean ecosystems operate at multiple scales, but the management of fisheries tends to be aimed at a single species considered at a single broad scale. The paper argues that this mismatch of ecological and management scale makes it difficult to address the fine-scale aspects of ocean ecosystems, and leads to fishing rights and strategies that tend to erode the underlying structure of populations and the system itself. A successful transition to ecosystem-based management will require institutions better able to economize on the acquisition of feedback about the impact of human...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Resource governance; Fisheries; Complex adaptive systems; Scale; Fishing effort; Decentralization; Governance institutions; Incentives; Multiscale governance; Fishing rights; Ecosystem management; Ecosystem-based management; Polycentric networks.
Ano: 2006
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Small scale fisheries in Europe: A comparative analysis based on a selection of case studies ArchiMer
Guyader, Olivier; Berthou, Patrick; Koutsikopoulos, C; Alban, Frederique; Demaneche, Sebastien; Gaspar, M.b.; Eschbaum, R; Fahy, E; Tully, O; Reynal, Lionel; Curtil, Olivier; Frangoudes, Katia; Maynou, Francesc.
Small-scale fisheries have traditionally received less research effort than large-scale fisheries and are generally under-studied in Europe. In spite of their comparatively low volume of catches and economic importance, small-scale fisheries are socially important and an integral part of the European coastal zone. Considering the high heterogeneity of situations and the paucity of quantitative data, we used an analytical methodology based on the comparative method. We carried out an analysis of small-scale fisheries (SSFs) in Europe based on a selection of nine case studies. Our objective was to obtain a comprehensive description of small-scale fleets covering different areas/fisheries/species, encompassing the diversity and specific conditions under which...
Tipo: Text Palavras-chave: Small-scale fisheries; Common fisheries policy; Fleet; Indicators; Fishing rights.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00118/22934/20757.pdf
Registros recuperados: 6
Primeira ... 1 ... Última
 

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