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| Registros recuperados: 70 | |
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| Lassus, Patrick; Martin, A; Maggi, Pierre; Berthome, Jean-paul; Langlade, Aime; Bachere, Evelyne. |
| Discolored waters and human diseases by shellfishes were dominant features of summer 1983 in south coast of Brittany. Vilaine Bay, the most damaged area, was successively affected by brown waters in early June, and diarrhetic intoxications by harvested mussels (July and August), just as DPS producing dinoflagellate (D. acuminata ) reached higher water or mussel guts concentrations than years before. Outspreading in the whole south coast of Brittany and possible relation with hydrological or biological parameters are analyzed. |
| Tipo: Text |
Palavras-chave: Brittany; France; ANE; Protista; Dinophysis acuminata; Shellfish culture; Red tides; Biological poisons; Toxicants. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/publication-1805.pdf |
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| Dutertre, Mickael; Grall, Jacques; Ehrhold, Axel; Hamon, Dominique. |
| This study used a large spatial scale approach in order to better quantify the relationships between maerl bed structure and a selection of potentially forcing physical factors. Data on maerl bed structure and morpho-sedimentary characteristics were obtained from recent oceanographic surveys using underwater video recording and grab sampling. Considering the difficulties in carrying out real-time monitoring of highly variable hydrodynamic and physicochemical factors, these were generated by three-dimensional numerical models with high spatial and temporal resolution. The BIOENV procedure indicated that variation in the percentage cover of thalli can best be explained (correlation = 0.76) by a combination of annual mean salinity, annual mean nitrate... |
| Tipo: Text |
Palavras-chave: Benthic habitats; Brittany; Environmental factors; Estuary; Large spatial scale; Maerl. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00280/39089/37816.pdf |
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| Pitel, Mathilde; Berthou, Patrick; Fifas, Spyros. |
| Basically, a dredge is a bottom-towed gear and consists of a metal frame with a blade or teeth, to dig into the sediment and extract the shelled molluscs, and a mesh bag to collect the catch. Whereas hand dredging is observed on some intertidal beds (Donax trunculus in France), the use of dredge generally needs a fishing boat. There is a great diversity of dredge types, with specific designs used to target different species in particular beds: Manual dredges for Donax (Donax trunculus), Warty venus (Venus verrucosa) and clams (Venerupis pulastra, Ruditapes sp) Dredges for King scallops (Pecten maximus) Dredges for Warty venus (Venus verrucosa) Dredge for Queen scallops (black and white, Chlamys varia and Chlamys opercularia) Dredges for small... |
| Tipo: Text |
Palavras-chave: Management; Environmental impact; Spisula; Bittersweet palourdi; Fishing boat; Clam; Dredge; Brittany; Gestion; Impact environnemental; Spisula; Amande; Navire de pêche; Drague; Bretagne. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/rapport-4608.pdf |
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| Fleury, Pierre-gildas; Claude, Serge; Bouget, Jean-francois; Langlade, Aime; Le Coguic, Yvette. |
| Every year, from March to December, the IFREMER / REMORA network carries out a survey of mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year ciass ; and "adults" = two-years class), distributed among various stations of the main French oyster areas. In Brittany, this network includes 11 points, to which regional points can be added (15 in 2000). With regard to the Breton stations of the network, the year 2000 showed rather low mortality rates, excepted mortality of several oysters when transfered to the sea. Several areas however had higher mortality rates (> 20%) : l'Arguenon, Morlaix, les Abers, Pen-Bé and Le Croisic. 2000 is a year of good growth in South Brittany (72.8 g in December), more average in North Brittany... |
| Tipo: Text |
Palavras-chave: REMORA; Bretagne; Huître creuse; Mortalité; Croissance; Qualité commerciale; Polydora; REMORA; Brittany; Gigas (cupped) oyster; Mortality; Growlh; Commercial qualily; Polydora. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00113/22389/20084.pdf |
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| Pitel, Mathilde; Fifas, Spyros; Huet, Jerome; Berthou, Patrick. |
| During the 1950s, the clam played only a bit part in the local maritime context. It was the focus of a different fleet than the king scallop fleet, with a lesser fishing capacity (fleet from the Relecq Kerhuon) and an average annual catch of around 150 tonnes. In the 1960s, with a drop in the king scallop stock, the clam became a substitution resource with productions of over 400 tonnes. The first stages of this evolution are detailed by Le Gall (1969) and Piboubès (1973). Slowly, the fleet developed (from the 70s on, with the progressive arrival of seaweed boats in the fishery) The drop of the production until the disruption of the fishery in the 1980s is the combined consequence of the increase of the fishing capacities with an unfavourable populating... |
| Tipo: Text |
Palavras-chave: Venus verrucosa; Stock assessment; Clams; Bay of Brest; Brittany; Venus verrucosa; Évaluation de stock; Praires; Rade de Brest; Bretagne. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/rapport-4607.pdf |
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| Bodin, Nathalie; Abarnou, Alain; Le Guellec, Anne-marie; Loizeau, Veronique; Philippon, Xavier. |
| The contamination and distribution of organ ochlorinated compounds were considered in three crustacean species (edible crab, Cancer pagurus; spider crab, Maja brachydactyla; velvet swimming crab, Necora puber) from five sites along the coasts of Brittany and Normandy (Western and North-Western France). PCBs (16 single congeners), pp'-DDE and HCB were measured in hepatopancreas, gonads and muscle: in all, 175 samples were analysed. The spider crab was the only species found in the five sampling sites, thus enabling comparison between areas. Specimens from Antifer were much more contaminated (Sigma(16)PCBs in hepatopancreas = 2000-4000 ng g(-1) dry weight) than those from other sites (50-1000 ng g(-1) d.w.). Among all the three species, the spider crab... |
| Tipo: Text |
Palavras-chave: Human diet; France; Brittany; Normandy; Crustaceans; Polychlorobiphenyls. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2594.pdf |
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| Burel, Thomas; Schaal, Gauthier; Grall, Jacques; Le Duff, Michel; Chapalain, Georges; Schmitt, Blondie; Gemin, Maxence; Boucher, Olivier; Ar Gall, Erwan. |
| Wave height was used as a proxy to assess the effect of hydrodynamics on the development and structure of intertidal North-East Atlantic rocky macroalgal communities (Brittany). The characterization of hydrodynamics at small-scale (about 10 m) was performed through wave height in situ monitoring using pressure sensors. Both the diversity and the cover of the macroalgal communities were sampled in parallel. Wave heights exhibit large variations with values ranging from ca. 5 cm to 1.60 m. We show that wave height directly controls the cover of macroalgal canopies (Pearson's r between −0.62 and −0.39). In all communities, most of the fucoid covers regressed with increasing wave height values. By contrast, positive correlations were found at low shore levels... |
| Tipo: Text |
Palavras-chave: Macroalgal communities; Intertidal zone; Rocky shores; Wave heights; Hydrodynamics; Mini-diver; Brittany. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00506/61769/65752.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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| Blaise, Emmanuel; Suanez, Serge; Stephan, Pierre; Fichaut, Bernard; David, Laurence; Cuq, Veronique; Autret, Ronan; Houron, Julien; Rouan, Mathias; Floc'H, France; Ardhuin, Fabrice; Cancouet, Romain; Davidson, Robert; Costa, Stephane; Delacourt, Christophe. |
| Between December 2013 and March 2014, a cluster of about 12 storm events hit the coast of Brittany with an exceptional frequency. It was in February that these storm events were the most frequent and particularly virulent. The significant wave heights measured off Finistere reached respectively 12.3 m and 12.4 m during Petra and Ulla storms on February 5 and 14. However, analysis of hydrodynamic conditions shows that only three episodes promoted extreme morphogenetic conditions because they were combined with high spring tide level. The first one occurred on January 1 to 4, it was followed by events from February 1 to 3, and March 2-3. During these three extreme events observed tide levels were above highest astronomical tide level (HAT). Maximum surge... |
| Tipo: Text |
Palavras-chave: Tempête; Érosion; Trait de côte; Marée de vive-eau; Bretagne; Surcote; Storm; High spring tide; Surge; Erosion; Shoreline; Brittany. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00310/42171/43029.pdf |
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| Perez, René; Kaas, Raymond; Barbaroux, Olivier; Arbault, Suzanne; Le Bayon, Nicolas; Moigne, J. |
| Introduction Starting in 1986, the ANVAR contributed well appreciated financial support in order to set up an original seeding technique characterized by artificial seeding production in a laboratory. This advantageous new way of seeding, i.e. independency from nature, yield increase and true competitiveness compared to traditional methods, nevertheless requires strict adherence to a procedure progressively elaborated during numerous trials in laboratory as well as at sea. The program ended in July 1989 after testing the cultivation protocol on a 2 hectare exploitation scale, in order to better detect what could be improved to greatly increase productivity, facilitate the work of the harvester and to better adapt the operating mode to environmental... |
| Tipo: Text |
Palavras-chave: Economic survey; Brittany; Farming technique; Seaweed; Undaria pinnatifida; Etude économique; Bretagne; Technique de culture; Algue; Undaria pinnatifida. |
| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/1990/rapport-1659.pdf |
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| Merceron, Michel. |
| The 1998 survey of green tides on the Brittany coast was performed in the same way as that of 1997 in order to allow comparison. 11 includes an inventory ofail the concerned sites, and a precise assessment ofthirteen ofthem, the most loaded. On these ones, nitrogen fluxes were surveyed during the critical period, and the green seaweed stock on the beach and in the first waves was quantified. The climatic conditions were opposite between the two years, very dry in spring and summer 1997, and wet in 1998. The irradiance contrast was inverse, and less pronounced. The nitrate contents and mostly the flows were more important in 1998. They generated nitrogen fluxes about 3.3 times those of 1997. The total number of sites concerned in 1998 is clearly higher than... |
| Tipo: Text |
Palavras-chave: Bretagne; Nitrate; Prolifération; Ulve; Eutrophisation; Brittany; Nitrate; Proliferation; Ulva; Eutrophication. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/rapport-2665.pdf |
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| Henaff, Alain; Le Cornec, Erwan; Jabbar, Marie; Petre, Anne; Corfou, Jeremy; Le Drezen, Yann; Van Vliet-lanoe, B.. |
| Knowledge regarding the systemic vulnerability of coastal territories to erosion and flood has progressed during the last decades thanks to the consideration of hazards but also of other components such as the stakes, the management and the social representations of the coastal risks. However, in numerous cases the development and urbanization of coastal territories submitted to the coastal risks continues. It results in the increase of exposed populations as well as in the increase of the cost of exposed properties, increasing in return their vulnerability. So, in the objective to improve the management strategies and to strengthen the memory of the risk, the need to specify the characteristics of hazards remains important. In this sense, the intensity,... |
| Tipo: Text |
Palavras-chave: Risques côtiers; Aléa; Érosion côtière; Submersion marine; Caractérisation spatiale; Bretagne; Coastal risks; Hazard; Coastal erosion; Coastal flooding; Spatial characterization; Brittany. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00638/75006/75785.pdf |
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| Registros recuperados: 70 | |
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