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| Registros recuperados: 12 | |
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| Bouche, Ludovic; Peronnet, Isabelle. |
| Depuis 2001, une évaluation annuelle de ce stock est réalisée en mars, elle a pour objectif : − d'estimer la biomasse du stock et sa répartition afin de procéder à l'estimation de la biomasse exploitable, en particulier, sur les zones réservées à la pêche professionnelle ; − d'établir un diagnostic sur l'état du stock. Ce document rend compte : − des résultats de l'évaluation directe annuelle du stock de palourde du Golfe du Morbihan et de la rivière de Noyalo qui s'est déroulée, en collaboration avec les professionnels, du 17 au 20 mars 2008 ; − de l'analyse des fiches de pêche concernant la saison de pêche 2007, émanant du CLPMEM d'Auray/Vannes. Ces études constituent une aide à la décision pour l'organisation de... |
| Tipo: Text |
Palavras-chave: Sampling; Assessment; Morbihan bay; Clam; Échantillonnage; Évaluation; Golfe du Morbihan; Palourde. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/rapport-6107.pdf |
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| Billy, Stéphanie; Peronnet, Isabelle; Salaun, Michele. |
| The Gulf has very tiled sea beds, and the surface areas of habitats suitable for ormer populations are rather reduced (1.56km2). Three zones have ormer densities of interest from the point of view of profitability, Brannec, lrus and Creizig. But since their surface area is not great, the exploitable biomass, that corresponding to individuals of a size greater than 80mm (legal catch size), is average. These three zones would be exploitable but following a limited fishing effort. The sectors of Ile aux moines and Jument and Henn Tenn show average to low densities and are not therefore exploitable in a profitable way. Finally, Gavrinis and le Logeo have revealed low densities of ormers, this could be due to an intensive illegal exploitation. In fact, many... |
| Tipo: Text |
Palavras-chave: Stock assessement; Exploitable population; Bay of Morbihan; Haliotis tubertulata; Brittany; Biomasse; CLPM Auray/Vannes; Population exploitable; Bretagne; Golfe du Morbihan; Haliotis tubertulata; Ormeaux. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/rapport-2326.pdf |
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| Ifremer, Del; Ceva, Pleubian. |
| In 1995, the gulf of Morbihan was not showing on the whole a pronounced level of eutrophication, but has nonetheless three sites of green algae proliferation: the Auray river estuary, the branches of the Vannes and Séné estuary, as well as the outlet of the Noyalo's estuary. Only these last two sectors show algal developments that are "abnormal" and that can be linked to a specific phenomenon of eutrophication (Ulva green tide in the Rosvellec-Séné sector, Monostroma green tide in the Saint Armel-Tascon sector). In the spring of 1995, the observations made on the foreshores of the Gulf of Morbihan, excluding the islands, made it possible to estimate an algal biomass of between 2,000 and 6,000 tons. |
| Tipo: Text |
Palavras-chave: Morbihan gulf; Eutrophication; Green seaweed; Green algae; Eutrophisation; Golfe du Morbihan; Algues vertes. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/1996/rapport-2085.pdf |
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| Piriou, Jean-yves; Chapron, Victorien; Annezo, Jean-pierre. |
| The gulf of Morbihan, without manifesting any pronounced signs of eutrophication, has, in 1995, three sites of green algae proliferation: the Auray river estuary, the branches of the Vannes and Séné estuary, as well as the outlet of the Noyalo's estuary. They are also the three sectors of the gulf that receive the most nutrient salts, in particular, nitrogen, which is a determining factor in the development of nitrophilic green algae (Ménesguen and Piriou 1995). During spring the nitrogen seems to come as much from urban sources (Vannes, Auray) as from agricultural sources coming from the northern catchment areas of the gulf. |
| Tipo: Text |
Palavras-chave: Morbihan gulf; Eutrophication; Nitrogen; Green seaweed; Green algae; Eutrophisation; Golfe du Morbihan; Azote; Algues vertes. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/1995/rapport-2084.pdf |
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| Dimeet, Joel. |
| Une évaluation du gisement d'oursins du golfe du Morbihan a été réalisée en 2008.Six stations ont été échantillonnées : Stibiden, Roc'h Vihan, Port Blanc, Kerners, Hent tenn et Brannec, une station de plus que les années précédentes Pour les cinq stations communes à 2007 et 2008 l'augmentation de la population d'oursins est de 5 % en global et de 25% pour les individus commerciaux. Les densités totales varient entre 87 et 136 individus pour 100 m2 et les densités commerciales entre 56 et 87 oursins pour 100m2. La densité maximale d'oursins commerciaux a été observée à Port blanc. Les tailles des oursins s'échelonnent entre 22mm et 88mm. 63% des oursins échantillonnés avaient une taille supérieure à la taille de première commercialisation, soit 55mm. |
| Tipo: Text |
Palavras-chave: Density; Size; Sampling; Survey; Gulf of Morbihan; Layer; Urchin; Densité; Taille; Évaluation; Échantillonnage; Golfe du Morbihan; Gisement; Oursin. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/rapport-6775.pdf |
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| Talidec, Catherine; Boncoeur, Jean; Alban, Frédérique; Curtil, Olivier; Le Floc'H, Pascal; Le Gallic, Bertrand; Pennanguer, Stéphane; Berthou, Patrick; Fifas, Spyros; Latrouite, Daniel. |
| This document is the 2001 activity report delivered by IFREMER, CEDEM (IUEM, UBO) and ENSA of Rennes for a co-financed study by the Brittany region within the framework of the XII CPER. This report is composed of: - an IFREMER study on the historical evolution of the Breton fleet created using data from the "halieutic observations system" (SIH) and surveys on the economic activity of fishing ships. The study is most interested in the Mor Braz and the Sea of Iroise sites. - an analysis by CEDEM of the legal and economic aspects of fishing along the coastal strip through two case studies: A seasonal break from bottom trawling and the diversification of professional fishing towards tourist and recreational economic activities. - a study by ENSA of Rennes on... |
| Tipo: Text |
Palavras-chave: Recreative fishing; Professionnal fishing; Breton fisheries; Survey; Data collection; Fishing fleet; Metier; Fishing activites; Brittany; Golfe du Morbihan; Mer d'Iroise; Mor Braz; Reglementation; Pêche de loisir; Pêche professionnelle; Pêcherie bretonne; Enquêtes; Collectes de données; Flottilles; Metier; Opérations de pêche; Bretagne. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/rapport-2289.pdf |
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| Talidec, Catherine; Daures, Fabienne; Leblond, Emilie; Lesueur, M.; Boude, J.p.. |
| This document is the progress report, for the third year, of the research programme "Scenarios for Development of Fishing Activity in the Breton Coastal Strip". Co-financed by the Brittany Region within the framework of the XII State/Regional Planning Contract, this programme teams up scientific partners from IFREMER, ENSAR, and UBO (CEDEM). This report is made up of two parts: - The first part is dedicated to the synthesis of the fisheries of Mor Braz. It was a matter of approaching the whole of Mor Braz with the methodology used for the study of customs, resources and space in the Gulf of Morbihan. Following the presentation of fishing activities, the first results on the economic situation of the fleets are explained. - The second part is a legal and... |
| Tipo: Text |
Palavras-chave: Database; Ship survey; Licence; Fishing assessment; Fleet; Costal fishing; Brittany; Enquêtes; Bases de données; Navire; Licence; Étude juridique; Flottille; Golfe du Morbihan; Pêcheries cotières; Mor Braz; CPER; Pêche; Bretagne. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/rapport-2262.pdf |
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| Registros recuperados: 12 | |
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