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Registros recuperados: 61
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A bio-economic analysis of long term changes in the production of French fishing fleets operating in the Bay of Biscay ArchiMer
Steinmetz, Fabien; Thebaud, Olivier; Blanchard, Fabian; Le Floc H, Pascal; Bihel, J.
Selective fishing pressure on more highly valued marine living resources is one of the key factors proposed to explain changes occurring in fish communities and associated landings of commercial fisheries. The aim of this paper is to establish the nature of changes in the landings of French fishing fleets operating in the Bay of Biscay in the period 1973-2002, and whether these changes could be related to the relative economic attractiveness of different fish species. The analysis focuses on trends observed in the landings of all commercial fish species over the last three decades. It is based on data of annual quantities landed and ex-vessel prices compiled from official French landings records, and on bio-geographical descriptors of these species derived...
Tipo: Text Palavras-chave: North Eastern Atlantic; Bay of Biscay; Long term changes; Bio economic analysis; French fisheries production.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-5926.pdf
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A bio-economic model for the ecosystem-based management of the coastal fishery in French Guiana ArchiMer
Cisse, Abdoul; Gourguet, Sophie; Doyen, L.; Blanchard, Fabian; Pereau, J. -c..
This paper offers a theoritical and empirical model of ecosystem-based fishery management. A multi-species and multi-fleet integrating Lotka-Volterra trophic dynamics as well as production and profit assessments is developed and applied to the coastal fishery of French Guiana. This small-scale fishery constitutes a challenging example with high fish biodiversity, several non-selective fleets and a potentially increasing local food demand due to demographic growth. The dynamic model is calibrated with 13 species and four fleets using monthly catch and effort data from 2006 to 2009. Several contrasted fishing scenarios including status quo, total closure, economic and viable strategies are then simulated. They are compared from the viewpoints of both...
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Ano: 2013 URL: http://archimer.ifremer.fr/doc/00124/23483/21311.pdf
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A stochastic viability approach to ecosystem-based fisheries management ArchiMer
Doyen, Luc; Thebaud, Olivier; Bene, Christopher; Martinet, V.; Gourguet, S.; Bertignac, Michel; Fifas, Spyros; Blanchard, Fabian.
Academia and management agencies show a growing interest for ecosystem-based fishery management (EBFM). However, the way to operationalize this approach remains challenging. The present paper illustrates how the concepts of stochastic co-viability, which accounts for dynamic complexities, uncertainties, risk and sustainability constraints, can be useful for the implementation of EBFM. In the present case, this concept is used to identify fishing strategies that satisfy both ecological conservation and economic sustainability in a multi-species, multi-fleet context. Economic Viability Analysis (EVA) and the broader Co-Viability Analysis (CVA), are proposed to expand the usual Population Viability Analysis (PVA) and precautionary approach. An illustration is...
Tipo: Text Palavras-chave: Ecosystem based fisheries management; Viability; Stochastic; Nephrops; Hake.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00074/18571/16153.pdf
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Addressing Marine and Coastal Governance Conflicts at the Interface of Multiple Sectors and Jurisdictions ArchiMer
Bellanger, Manuel; Speir, Cameron; Blanchard, Fabian; Brooks, Kate; Butler, James R. A.; Crosson, Scott; Fonner, Robert; Gourguet, Sophie; Holland, Daniel S.; Kuikka, Sakari; Le Gallic, Bertrand; Lent, Rebecca; Libecap, Gary D.; Lipton, Douglas W.; Nayak, Prateep Kumar; Reid, David; Scemama, Pierre; Stephenson, Robert; Thébaud, Olivier; Young, Juliette C..
Marine and coastal activities are closely interrelated, and conflicts among different sectors can undermine management and conservation objectives. Governance systems for fisheries, power generation, irrigation, aquaculture, marine biodiversity conservation, and other coastal and maritime activities are typically organized to manage conflicts within sectors, rather than across them. Based on the discussions around eight case studies presented at a workshop held in Brest in June 2019, this paper explores institutional approaches to move beyond managing conflicts within a sector. We primarily focus on cases where the groups and sectors involved are heterogeneous in terms of: the jurisdiction they fall under; their objectives; and the way they value ecosystem...
Tipo: Text Palavras-chave: Trade-offs; Ecosystem management; Ecosystem services; Cross-sectoral coordination; Marine governance; Multi-jurisdictional conflicts; Institutions; Environmental policy.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00652/76376/77383.pdf
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Analyse de la structure du système de pêche artisanal guyanais. Introduction à sa dynamique ArchiMer
Blanchard, Fabian; Charuau, Anatole; Rose, Joel; Achoun, Joseph.
Les activités de la petite pêche et de la pêche côtière en Guyane ne sont pas encore assez bien organisées pour permettre un suivi rigoureux. On sait surtout qu'il s'agit d'une activité en baisse et le déclin amorcé au début des années 80 n'a fait que se confirmer dans les années récentes. Alors que le nombre de bateaux pratiquant de façon régulière la petite pêche avoisinait les 150 en 1985, en 1998, la flottille était réduite à 65 unités. Un chiffre fera mieux comprendre cette évolution: dans les années 80, il y a eu jusqu'à 12 tapouilles à Cayenne, alors qu'à la fin 1998, il en restait 4. On peut espérer qu'en 1999, 2 tapouilles supplémentaires et les 3 navires expérimentaux construits par la Région Guyane viendront s'ajouter à cette flottille et...
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Ano: 1999 URL: http://archimer.ifremer.fr/doc/00075/18612/16165.pdf
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Analyse des données de pêche et de débarquement des deux segments exploitant le vivaneau rouge et le vivaneau ti-yeux dans la ZEE de Guyane ArchiMer
Caro, Anthony; Lampert, Luis; Blanchard, Fabian; Fidel, Lisa; Rose, Joel.
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Ano: 2009 URL: http://archimer.ifremer.fr/doc/00074/18531/16075.pdf
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Analyzing the market position of fish species subject to the impact of long-term changes: a case study of French fisheries in the Bay of Biscay ArchiMer
Le Floc' H, P; Poulard, Jean-charles; Thebaud, Olivier; Blanchard, Fabian; Bihel, J; Steinmetz, Fabien.
Market position and its evolution were analysed in nine key fish and cephalopod species subject to long-term changes, using the Bay of Biscay fisheries as a case study. Although such long term changes have already been documented, and in some cases shown to be related to the impacts of fishing, changes in the physical environment, or both, relatively little work has been devoted to their potential consequences in economic terms. The nature and extent of these consequences was determined in the present study by looking at the composition of the affected fish production, and the status of different fish products on the markets. We propose a methodology to characterize market position for this set of nine species. The selected species represent a significant...
Tipo: Text Palavras-chave: Atlantic Ocean; Fish market; Macro economic aggregates; Environmental change.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4716.pdf
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Avis 2013 sur le nombre de licences de pêche des navires crevettiers en Guyane ArchiMer
Lampert, Luis; Biseau, Alain; Blanchard, Fabian.
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Ano: 2013 URL: https://archimer.ifremer.fr/doc/00184/29555/79229.pdf
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Avis 2014 sur le nombre de licences de pêche des navires crevettiers en Guyane ArchiMer
Baulier, Loic; Biseau, Alain; Blanchard, Fabian.
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Ano: 2014 URL: https://archimer.ifremer.fr/doc/00184/29556/27891.pdf
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Avis 2014 sur le TAC du stock de crevettes de Guyane ArchiMer
Baulier, Loic; Blanchard, Fabian; Biseau, Alain.
Tipo: Text
Ano: 2014 URL: https://archimer.ifremer.fr/doc/00187/29782/79228.pdf
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Avis 2017 sur l’état du stock de crevette Guyane ArchiMer
Baulier, Loic; Biseau, Alain; Blanchard, Fabian.
L'évaluation du stock de crevettes café (Farfantepenaeus subtilis) de Guyane a été réalisée à partir des données de débarquement par catégories commerciales des chalutiers guyanais, à l'aide d'un modèle structuré en âge (VPA) paramétré séparément pour les mâles et les femelles. Ce modèle a permis de reconstituer les séries des effectifs et mortalités par pêche mensuels aux âges depuis 1989 jusqu'au mois de juin 2016. L'application d'un modèle de recrutement par recrue a ensuite permis de poser un diagnostic sur le niveau d'exploitation des deux composantes du stock. Ce stock, dont la biomasse a fortement diminué depuis le début de son exploitation, demeure à des niveaux de biomasse bas. L’analyse montre une légère surexploitation de croissance en ce qui...
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Ano: 2017 URL: https://archimer.ifremer.fr/doc/00373/48371/79230.pdf
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Avis sur le nombre de licences de pêche des navires crevettiers pour l’année 2012 ArchiMer
Lampert, Luis; Blanchard, Fabian; Biseau, Alain.
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Ano: 2012 URL: https://archimer.ifremer.fr/doc/00183/29429/79388.pdf
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Avis sur le nombre de licences de pêche des navires crevettiers pour l'année 2015 ArchiMer
Baulier, Loic; Blanchard, Fabian; Biseau, Alain.
Avis sur le nombre de licences de pêche à mettre à disposition des navires crevettiers en Guyane pour l'année 2015.
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Ano: 2015 URL: https://archimer.ifremer.fr/doc/00280/39140/37695.pdf
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Avis sur le TAC 2015 du stock de crevettes de Guyane ArchiMer
Baulier, Loic; Blanchard, Fabian; Biseau, Alain.
Avis de l’Ifremer concernant le total autorisé de capture (TAC) pour le stock de crevettes de Guyane en 2015.
Tipo: Text
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00255/36629/79391.pdf
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Avis sur les licences pour la pêche au vivaneau ArchiMer
Tagliarolo, Morgana; Baulier, Loic; Blanchard, Fabian.
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Ano: 2018 URL: https://archimer.ifremer.fr/doc/00480/59182/79402.pdf
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Avis sur les licences pour la pêche expérimentale au large (thonidés) ArchiMer
Tagliarolo, Morgana; Blanchard, Fabian.
Tipo: Text
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00480/59181/79400.pdf
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Biodiversité halieutique : impacts de la pêche et des changements climatiques - Conséquences économiques pour les pêcheries ArchiMer
Blanchard, Fabian.
Les actions de recherche synthétisées dans ce document ont été menées en partenariat avec des halieutes, écologues marins, statisticiens, modélisateurs et économistes ; partenaires au sein de l’Ifremer, d’organismes de recherche - IRD, CNRS, Institut National de Recherche Halieutique du Maroc - , et d’Enseignement Supérieur - Université de Bretagne Occidentale, Université du Littoral Côte d’Opale, Ecole Nationale d’Ingénieur de Brest, Université des Antilles et de la Guyane. Ces actions ont permis de consolider une communauté pluri-disciplinaire nationale pour aborder les questions de l’analyse intégrée et de la modélisation à l’échelle écosystémique de la durabilité écologique et économique de l’exploitation des ressources halieutiques dans un contexte...
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00349/46021/45695.pdf
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Changement global, dynamique de la biodiversité marine exploitée et viabilité des pêcheries (Rapport final du projet CHALOUPE) ArchiMer
Blanchard, Fabian; Thebaud, Olivier.
Tipo: Text
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00076/18686/16236.pdf
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Climate warming vs ecological competition for marine tropical biodiversity and fisheries ArchiMer
Gomes, Helene; Kersulec, Coralie; Doyen, Luc; Blanchard, Fabian; Cisse, Abdoul; Sanz, Nicolas.
Marine ecosystems, biodiversity and fisheries are under pressure worldwide because of global changes including climate warming and demographic pressure. In that regard, many scientists and stakeholders advocate the use of an ecosystem approach for fisheries integrating the numerous ecological and economic complexities at play, instead of focusing on the management of isolated target species. However, the way to operationalize such an ecosystem approach remains challenging, especially from the bioeconomic viewpoint. To achieve this, here we propose a model of intermediate complexity (MICE) relying on multi-species and multi-fleets dynamics. The model also takes into account climate change through a model of envelope for the biological growth of the fish...
Tipo: Text Palavras-chave: Marine biodiversity; Multi-species; Multi-fleet fishery; Models of Intermediate Complexity (MICE); Climate change; Exclusion principle.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00640/75222/75364.pdf
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Connaissance des stocks pêchés par les flottilles des territoires français qui sont aussi régions ultra-périphériques de l’Union européenne (Guadeloupe, Guyane, La Réunion, Martinique, Mayotte, Saint Martin). Réponse à la saisine DPMA 18-13767 ArchiMer
Blanchard, Fabian; Guyader, Olivier; Roos, David; Reynal, Lionel; Weiss, Jerome.
Ce rapport est une réponse à la saisine DPMA 18-13767 (annexe 1). Il propose dans une première partie une synthèse des productions par espèce pour la Guadeloupe, la Martinique, la Guyane, La Réunion et Mayotte, ainsi que l’effort de pêche par flottille/métiers pour ces territoires ultra-marins (rapport OBSDEB 2018, annexe 2) et une synthèse de l’état des stocks qui font l’objet d’une évaluation. La seconde partie du rapport est consacrée à un diagnostic de l’état des connaissances et des priorités d’acquisition de connaissance en vue d’une approche écosystémique de la gestion des pêcheries concernées. NB. Cette deuxième partie sera livrée fin avril 2019.
Tipo: Text
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00506/61723/65694.pdf
Registros recuperados: 61
Primeira ... 1234 ... Última
 

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