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Registros recuperados: 61
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Rapport ObsDEB - Estimation 2014 des efforts de pêche et des productions dans les régions Méditerranée continentale, La Réunion, Martinique, Guadeloupe et Guyane. ArchiMer
Blanchard, Fabian; Lespagnol, Patrick; Weiss, Jerome; Demaneche, Sebastien; Bourjea, Jerome; Evano, Hugues; Reynal, Lionel; Guyader, Olivier; Baulier, Loic; Merrien, Claude; Leblond, Emilie; Daures, Fabienne; Berthou, Patrick; Leblond, Samuel.
Le programme d’observation des marées au débarquement, appelé « ObsDEB », contribue à l’estimation de l’effort de pêche et des captures des flottes de pêche françaises. Il vise tout particulièrement les flottilles de petite pêche côtière et procède à la collecte des informations requises selon un plan d’échantillonnage adapté à chaque région suivie. Ce rapport est le Rapport annuel de Convention DPMA-Ifremer 2015 et présente les estimations 2014 des efforts de pêche et des productions dans les régions Méditerranée continentale, La Réunion, Martinique, Guadeloupe et Guyane.
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Ano: 2016 URL: http://archimer.ifremer.fr/doc/00326/43714/43159.pdf
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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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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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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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Mangrove increases resiliency of the French Guiana shrimp fishery facing global warming ArchiMer
Diop, Bassirou; Blanchard, Fabian; Sanz, Nicolas.
This paper deals with the biological, ecological and economic impact of global warming and mangrove habitat availability on the French Guiana shrimp fishery. A dynamic bio-economic model is built by employing a shrimp stock's growth function depending on Sea Surface Temperature (SST) and on mangrove surface. The model is empirically calibrated for the French Guiana shrimp fishery using time series collected over 1995–2011. First, two Cobb-Douglas functions, which describe shrimp's natural growth and harvest, are estimated. Then, a Maximum Economic Yield (MEY) harvest rule, based on the optimization of the net present value derived from fishing, is computed. Three management strategies are compared (Closure, Status Quo management, and MEY) under three...
Tipo: Text Palavras-chave: Renewable resources; Fishery bio-economic model; Global warming; Shrimp; Sea surface temperature; Mangrove.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00455/56672/58537.pdf
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Fishing effects on the diversity dynamics of demersal fish communities. Comparative analysis of the role of the interactions between specices in the Bay of Biscay and in the Gulf of Lion (France). ArchiMer
Blanchard, Fabian.
This work deals with the fishing effects on the diversity dynamics of demersal fish communities, focusing on the biotic interactions. Multispecies indices were used in order to characterise the demersal fish community dynamics of the Bay of Biscay and of the Gulf of Lions. These are the diversity indices, the temporal variability of the total biomass and of the slope of the number size spectra and the slope of the species-area curves (spatial segregation). The data were provided by yearly bottom trawl surveys EVHOE, CHALIST and MEDITS carried out in these two areas since 1983 by IFREMER for stock assessment. The differences between areas are related to a fishing index (mean value of the annual landings of demersal fish per surface area). Other areas are...
Tipo: Text Palavras-chave: Demersal fish; ANE; Bay of Biscay; Gulf of Lions; Fish communities; Fishing impact; Biodiversity; Biotic interactions; Spatial segregation; Biomass variability; Size spectrum.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/00000/10248/7688.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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Effets de l'exploitation par la pêche sur la dynamique de diversité des peuplements de poissons démersaux : analyse comparée du rôle des interactions entre espèces dans le golfe de Gascogne et dans le golfe du Lion ArchiMer
Blanchard, Fabian.
This work deals with the fishing effects on the diversity dynamics of demersal fish communities, focusing on the biotic interactions. Multispecies indices are used in order to characterize the demersal fish community dynamics of the Bay of Biscay and of the Gulf of Lions. These are the diversity indices, the temporal variability of the total biomass and of the slope of the number size spectra and the slope of the species-area curves (spatial segregation). The yearly bottom trawl surveys EVHOE, CHALIST and MEDITS, carried out in these two areas since 1983 by IFREMER for the stocks assessment provide the data. The differences between areas are related to a fishing index (mean value of the annual landings of demersal fish per surface area). Other areas are...
Tipo: Text Palavras-chave: Gulf of Lions; Bay of Biscay; Medits; Chalist; Evhoe; Fishing effect; Diversity; Demersal fish; Golfe du Lion; Golge de Gascogne; Medits; Chalist; Evhoe; Descripteurs; Diversité des peuplements; Poissons démersaux.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/these-6670.pdf
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Avis 2014 sur le TAC du stock de crevettes de Guyane ArchiMer
Baulier, Loic; Blanchard, Fabian; Biseau, Alain.
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Ano: 2014 URL: https://archimer.ifremer.fr/doc/00187/29782/79228.pdf
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Situation de la pêche en Guyane en 2017 ArchiMer
Weiss, Jerome; Duchene, Julie; Le Blond, Samuel; Mansuy, Emmanuel; Blanchard, Fabian; Demaneche, Sebastien; Berthou, Patrick; Le Roy, Emilie; Leblond, Emilie; Système d'Informations Halieutiques de l'Ifremer..
Le présent document est une restitution globale des données disponibles au sein du SIH sur les navires de pêche français, et en particulier : • le fichier « Flotte de Pêche Communautaire » (FPC), qui référence l'ensemble des navires de pêche professionnelle de la flotte française et leurs caractéristiques techniques (source : DPMA) ; • les données du flux déclaratif, c'est-à-dire les déclarations de captures et d'effort de pêche des pêcheurs professionnels, issues des journaux de bord pour les navires de 10 mètres et plus et des fiches de pêche pour les navires de moins de 10 mètres (source : DPMA) ; • les données de ventes (essentiellement des ventes en criée) des navires de pêche professionnelle (source : DPMA) ; • les données d'enquêtes « Activité »...
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Ano: 2019 URL: https://archimer.ifremer.fr/doc/00493/60418/63854.pdf
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GECO : Gestion durable des pêcheries côtières en Guyane ArchiMer
Blanchard, Fabian; Cisse, Abdoul; Guyader, Olivier; Gourguet, Sophie; Doyen, Luc; Rosele-chim, Paul.
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Ano: 2011 URL: http://archimer.ifremer.fr/doc/00075/18582/16134.pdf
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When physical oceanography meets population genetics: The case study of the genetic/evolutionary discontinuity in the endangered goliath grouper (Epinephelus itajara, Perciformes: Epinephelidae) with comments on the conservation of the species ArchiMer
Benevides, E. A.; Vallinoto, M. N. S.; Fetter Filho, A. F. H.; De Souza, J. R. B.; Silva-oliveira, G.; Freitas, M. O.; Ferreira, B. P.; Hostim-silva, M.; Bertoncini, A. A.; Blanchard, Fabian; Torres, R. A..
Epinephelus itajara is one of the marine fish species most threatened for extinction and it is considered to be "critically endangered" by the IUCN. The present study evaluated the genetic diversity of the species and the genetic/evolutionary relationships of its populations along the Atlantic coast of South America. The results indicate relatively reduced genetic variation, re-emphasizing the low adaptive potential of the species. One of the populations presented relatively high degrees of genetic diversity and it is evolutionary isolated from the all other populations. The evidences indicate the existence of two Evolutionarily Significant Units comprising E. itajara in the Atlantic coast of South America and the conservation prospects for the species...
Tipo: Text Palavras-chave: Epinephelus itajara; ISSRs; Population genetics; Conservation genetics.
Ano: 2014 URL: https://archimer.ifremer.fr/doc/00230/34100/34465.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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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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Synthèse des Pêcheries de Guadeloupe 2010 ArchiMer
Guyader, Olivier; Reynal, Lionel; Lespagnol, Patrick; Le Meur, Chloe; Demaneche, Sebastien; Le Blond, Samuel; Jean-charles, Cedric; Erialc, Carole; Rulle, Ludovic; Bourgeois, Pierre; Cornou, Anne-sophie; Leblond, Emilie; Merrien, Claude; Le Ru, Loic; Blanchard, Fabian; Daures, Fabienne; Berthou, Patrick.
Le présent document est une restitution globale des données disponibles au sein du SIH sur les navires de pêche français, et en particulier : • le fichier « Flotte de Pêche Communautaire » (FPC), qui référence l'ensemble des navires de pêche professionnelle de la flotte française et leurs caractéristiques techniques (source : DPMA) ; • les données du flux déclaratif, c'est-à-dire les déclarations de captures et d'effort de pêche des pêcheurs professionnels, issues des journaux de bord pour les navires de 10 mètres et plus et des fiches de pêche pour les navires de moins de 10 mètres (source : DPMA) ; • les données de ventes (essentiellement des ventes en criée) des navires de pêche professionnelle (source : DPMA) ; • les données d'enquêtes « Activité »...
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Ano: 2013 URL: http://archimer.ifremer.fr/doc/00180/29114/27519.pdf
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Fishing effects on diversity, size and community structure of the benthic invertebrate and fish megafauna on the Bay of Biscay coast of France ArchiMer
Blanchard, Fabian; Le Loc'H, Francois; Hily, Christian; Boucher, Jean.
Within the framework of the 'dynamic equilibrium model', we tested the hypothesis that fishing causes major disturbance to benthic communities on deeper bottoms of the continental shelf. Benthic megafauna on the Bay of Biscay coast of France was sampled on fishing grounds subject to various conditions of exploitation. Samples were taken at around 100 m depth to avoid strong natural disturbances. Species diversity and the largest body mass class of invertebrates were smaller in strongly exploited areas than in moderately exploited ones. Biomass size spectra in strongly exploited areas were characterised by a comparatively large biomass of small invertebrates, hence the K-dominance curve of abundance was either above the biomass curve, or the curves...
Tipo: Text Palavras-chave: Benthic communities; Community dynamics; Disturbance; Diversity; Size spectrum.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/00000/10896/7578.pdf
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Relating species and community dynamics in an heavily exploited marine fish community ArchiMer
Duplisea, Daniel; Blanchard, Fabian.
We examined the dynamics of fish species and how they relate to species assemblage coherence in the heavily exploited Georges Bank fish community. Coherence is defined as reduced temporal variability of total assemblage biomass. We assumed that a higher degree of compensation hence coherence occurs within competitively coupled species assemblages; therefore, fisheries may directly alter the dynamics of certain targeted species sizes but assemblage structure will be relatively more stable owing to compensatory interactions. Species-sizes were grouped, based on negative covariance coupling in biomass time series from survey data. Assemblages representing benthic feeders were clearly identified by this method; furthermore, the most heavily exploited...
Tipo: Text Palavras-chave: Diversity stability; Species replacement; Energy flow; Emergent property; Thermodynamics; Goal function.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-806.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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Ecological-economic modelling for the sustainable management of biodiversity ArchiMer
Doyen, Luc; Cisse, Abdoul; Gourguet, Sophie; Mouysset, L.; Hardy, Pierre-yves; Bene, Christophe; Blanchard, Fabian; Jiguet, Frederic; Pereau, J.-c.; Thebaud, Olivier.
Terrestrial and marine biodiversity provides the basis for both ecosystems functioning and numerous commodities or services that underpin human well-being. From several decades, alarming trends have been reported worldwide for both biodiversity and ecosystem services. Therefore the sustainable management of biodiversity requires a double viewpoint balancing ecological conservation with the welfare of human societies. Understanding the underlying trade-offs, synergies and interactions imposes the development of interdisciplinary researches and methods. In that respect, bio-economic or ecological economic modeling is likely to play a major role. The present paper intends to elicit the key features, strengths and challenges of bio-economic approaches...
Tipo: Text Palavras-chave: Ecological economics; Modeling; Sustainability; Biodiversity; Public policy; Criterion; Equilibrium; Optimality; Viability.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00171/28208/26510.pdf
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Ecoviability for ecosystem-based fisheries management ArchiMer
Doyen, Luc; Bene, Christophe; Bertignac, Michel; Blanchard, Fabian; Cisse, Abdoul; 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; Thebaud, 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...
Tipo: Text Palavras-chave: Biodiversity; Ecological economics; Ecosystem approach; Fisheries; Scenario; Viability.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00409/52009/52724.pdf
Registros recuperados: 61
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