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| Registros recuperados: 32 | |
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| Vigneau, Joel. |
| The "best" raising procedure for discards in fishery science is a method everyone talks about but nobody has ever seen it. The specific workshop on discards (Anon. 2003) proposes formulas that are too simplistic as they do not take into account the within trip variance. The literature is full of attempts and results but they are always specific to particular case studies (Stratoudakis et al, 2001, Cotter et al, 2001) or based on inconsistent hypothesis as demonstrated by Rochet and Trenkel (2005). When some generalities are finally found (Borges et al., 2005), the formulas developed do not correspond to multistage sampling because of the unavailability of essential parameters and because the aim of the study is "not to identify optimum raising procedures".... |
| Tipo: Text |
Palavras-chave: Multistage sampling; Raising procedure; Discards. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/acte-2699.pdf |
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| Vigneau, Joel; Girardin, Raphael. |
| During the flatfish benchmark held in ICES in 2020 (WKFlatNSCS), questions arose on the modifications made recently on two key fields of fisheries data processed by France for providing data to stock assessment groups. These two fields are: • the gap filling method in Age Length Keys • the effort aggregates in support of discards raising procedure Updates of procedures, improvements of R scripts and coding are done permanently, and some of the modifications made in 2019 at the demand of WGNSSK experts had unraveled issues that went undetected until data submission of sol.27.7d full time series for WKFlatNSCS benchmark. These issues may have also impacted the Celtic Sea benchmark (WKCELTIC) and to a lesser extent the WKDEM earlier in the year. The document... |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00613/72482/71448.pdf |
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| Foucher, Eric; Vigneau, Joel; Goraguer, Herle. |
| This scientific report describes the sea cucumber (Cucumaria frondosa) fishery in Saint-Pierre and Miquelon (France). A synthesis of knowledge on the biology and life cycle of this species is presented, as well as a history of the fishery. Using the data collected during the SPM2017-Hal scientific survey conducted in August 2017, as well as data from the professional fishery, both in Saint-Pierre and in Canada, an assessment of the sea cucumber stock and a diagnosis of the state of this stock are carried out. Management objectives for this stock, with a view to its sustainability, are proposed. |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00681/79333/81845.pdf |
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| Biseau, Alain; Bellail, Robert; Bertignac, Michel; Biais, Gerard; Bigot, Jean-louis; Bouche, Ludovic; Bourjea, Jerome; Caro, Anthony; De Casamajor, Marie-noelle; Caill-milly, Nathalie; Drogou, Mickael; Duhamel, Erwan; Fifas, Spyros; Foucher, Eric; Fromentin, Jean-marc; Jadaud, Angelique; Lampert, Luis; Laurans, Martial; Lissardy, Muriel; Lorance, Pascal; Mahe, Jean-claude; Mahe, Kelig; Masse, Jacques; Morandeau, Gilles; Pawlowski, Lionel; Poisson, Francois; Reynal, Lionel; Roos, David; Verin, Yves; Vermard, Youen; Vigneau, Joel. |
| Ce document présente l'état des principaux stocks exploités par les flottes françaises en termes de mortalité par pêche et de biomasse de reproducteurs. La situation fin 2010 (début 2011) par rapport aux points de référence (de précaution et Fmsy) est indiqué lorsque les indicateurs sont estimés et que les références sont définies. Les grandes tendances en matière d'évolution des mortalités et biomasses sont également indiquées. |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00035/14656/11956.pdf |
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| Vigneau, Joel; Lemoine, Michel. |
| Tous les ans depuis 1976, le laboratoire "RESSOURCES HALIEUTIQUES" de PORT-EN-BESSIN effectue une campagne d'évaluation sur les coquilles Saint-Jacques en Manche-Est; Les objectifs en sont une évaluation des stocks avec estimation de la biomasse exploitable, de la qualité du recrutement (prochaine génération à entrer dans les captures) et du pré-recrutement (dernière génération née, non encore accessible aux engins par la taille), et des paramètres de croissance. Toutes ces données servent de support aux décisions de la "commission coquilles" du Comité Régional des Pêches et des Cultures Marines de Basse-Normandie, avant l'ouverture de la saison de pêche. Ce type de campagne a été initialement mis au point par G. de KERGARIOU. En 1990, lors de la campagne... |
| Tipo: Text |
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| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00076/18752/16323.pdf |
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| Vigneau, Joel; Claireaux, Daniel; Goascoz, Nicolas; Goraguer, Herle; Mahe, Kelig. |
| The Atlantic halibut stock area comprises the NAFO subdivisions 3NOPs4VWX5Zc where total international catches has increased to about 2300 tonnes in 2013 and the TAC for 2014 has been set to 2563 tonnes. The St-Pierre et Miquelon uptake of the overall quota varies between 2 to 6 % over the last 10 years. In 2014, responding to a demand for improving the scientific cooperation, by the Canada France Consultative Committee (CFCC) for 3Ps management, SPM began the monitoring of the autumn fishery by on-board observer. The objectives were to provide the stock assessment working group with information on maturity given that the fishery is fishing on a spawning ground. |
| Tipo: Text |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00270/38074/36194.pdf |
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| Alemany, Juliette; Foucher, Eric; Rivot, Etienne; Vigneau, Joel; Robin, Jean-paul. |
| Among the English Channel fishery, the importance of cuttlefish stock has increased, following the cephalopods global landings and market trend. The stock is currently managed at regional scale but not by European regulations, although it is a shared species targeted by French and British fishing fleets at several stages of its life-cycle and across much of its distributional range. An assessment of this stock was conducted in June 2014 by fitting a two-stage biomass model on a 22 years’ time-series (1992-2013). As the assumptions of the model are based on a simplified life-cycle, it would be appropriate to compare the results with outputs from other models in order to obtain reliable biomass estimations. The final aim is to produce reliable management... |
| Tipo: Text |
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| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00377/48773/49171.pdf |
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| Vigneau, Joel; Biseau, Alain; Cochard, Marie-laure; Vermard, Youen. |
| Expression de la demande : La demande d’avis de la part de la Direction Interrégionale de la mer Manche Est – mer du Nord (DIRM-MMN) datant du 25 février 2015 et référencée 25/2015 est présentée en annexe. La demande fait référence à un arrêté d’interdiction faite à une liste d’engins traînants de fond dans les zones de nourricerie en Baie de Seine afin de favoriser la reconstitution des stocks de sole. La liste des engins prohibés (annexe III de l’arrêté) inclut les dragues remorquées par bateau, code DRB selon la nomenclature FAO. Le comité régional des pêches de Basse-Normandie (CRPBN) s’inquiète de cette interdiction, arguant du fait que la zone protégée en baie de Seine occidentale englobe une partie des gisements mouliers de Grandcamp et Ravenoville,... |
| Tipo: Text |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00255/36625/79503.pdf |
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| Vigneau, Joel; Van Beek, Frans; Lordan, Colm; Lorance, Pascal; Armstrong, Mike; Dalskov, Jørgen; Ullrich, Clara; Moreau, Kelle; Santurtun, Marina; Schon, Peter Jan. |
| The Third Data Deficiency Coordination Workshop with the RACs (WKDDRAC3), was planned to be chaired by Joël Vigneau (France) and Barrie Deas (UK), at ICES in Copenhagen, Denmark, on 16 January 2013 to: a) Evaluate the progress done after WKDDRAC2 b) Identify the main data issue of the northwest and southwest water stocks and agree on actions to improve data deficiencies; c) Data preparation for ICES stock benchmark meetings; |
| Tipo: Text |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00116/22756/25248.pdf |
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| Hegron – Mace, Laurence; Legrand, Véronique; Kellner, Kristell; Grangere, Karine; Cochard, Marie-laure; Vigneau, Joel; Daures, Fabienne. |
| La Baie de Granville représente la première région française et européenne de pêche du buccin. Même si cette ressource génère une activité économique importante à l’échelle de la Normandie avec un volume de 8 800 tonnes, 16.82 millions € en 2014 (source SIH), elle reste néanmoins vulnérable. BESTCLIM a pour objectif de 1) Développer la connaissance du cycle de vie du buccin, 2) Evaluer l’activité de la pêcherie et l’état du stock de buccin en Ouest Cotentin avec des méthodes appropriées, 3) Caractériser les aspects socio-économiques de la pêcherie. L’élévation de la température de l’eau impacte la reproduction du buccin en retardant le déclenchement de la gamétogenèse des mâles. Elle a pour effet de réduire de manière importante l’émission de pontes par... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00422/53394/54435.pdf |
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| Registros recuperados: 32 | |
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