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| Registros recuperados: 26 | |
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| Belsher, Thomas; Lunven, Michel; Le Gall, Erwan; Caisey, Xavier; Dugornay, Olivier; Mingant, Christian. |
| The oceanographic cruise Califa 2000, as the previous cruise, which concerned the "Parc National de Port-Cros", had for its principal objective to furnish some elements susceptible to help in the control of Caulerpa taxifolia expansion and in the protection of particularly sensitive areas (national parks, patrimonial sectors, regions of socio-economic importance). The cruise lasted from the 4th to the 21st of September 2000 in the rade d'Hyeres, Porquerolles island included, and the rade of Toulon. This detailed prospection gives a location of C. taxifolia and C. racemosa, a new invasive seaweed. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved. |
| Tipo: Text |
Palavras-chave: Rade de Toulon; Rade d' Hyeres; Cartography; Caulerpa racemos; Caulerpa taxifolia; Invasive species; Rade de Toulon; Rade d'Hyères; Cartographie; Caulerpa racemosa; Caulerpa taxifolia; Espèces invasives. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/publication-520.pdf |
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| Pouvreau, Stéphane; Tiapari, Jérôme; Gangnery, Aline; Garnier, M.; Lagarde, Franck; Robert, Stéphane; Jonquieres, Gerard; Teissier, Hinano; Prou, Jean; Bennett, Auguste; Caisey, Xavier; Haumani, Gaby; Buestel, Dominique; Bodoy, Alain. |
| Tipo: Text |
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| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00041/15176/12513.pdf |
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| Dao, Jean-claude; Caisey, Xavier. |
| Since 1973, spat collection bas been conducted by IFREMER in the bay of Brest. This collection aimed at providing juveniles of Pecten maximus (1973-77) and then Chlamys varia(1977-87) in order to improve the management of the fishing grounds of the two species. Since 1982, the efforts have been focussed on the P. maximus spat production through the hatchery/nursery systems and the intermediate culture. Juveniles are seeded above a minimum size to create an additional population. In parallel, the levels of spat yied/collector have been followed as a pre-recruit index. At present time, there is no increase of spat collection during 1985-1990. Moreover, the results rise up the question of water quality in the bay of Brest for this group apparently very... |
| Tipo: Text |
Palavras-chave: Pectinidés; Captage; Collecteurs; Rade de Brest; Scallop; Pectinids; Spat collection; Bay of Brest. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00108/21965/19560.pdf |
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| Bajjouk, Touria; Rochette, Sebastien; Ehrhold, Axel; Cordier, Celine; Laurans, Martial; Tourolle, Julie; Hamdi, Anouar; Tourolle, Julie; Gaffet, Jean-dominique; Caisey, Xavier; Vasquez, Mickael; Populus, Jacques. |
| Tipo: Text |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00280/39159/37722.pdf |
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| Pavillon, J-f; Quiniou, Francoise; Caisey, Xavier; Menasria, R.. |
| Les résultats présentés dans cette synthèse reprennent en partie ceux présentés séparément par les deux laboratoires marins : le laboratoire de Physiologie des êtres marins de l'Institut océanographique de Paris et l'antenne brestoise du Département Chimie des polluants de la Direction de l'Environnement Littoral de l'Ifremer, dans les rapports de juillet 99, juillet 2000 et octobre 2002 complétés par des résultats obtenus de juillet 2000 à juillet 2001. L'objectif principal du programme devait permettre de caractériser les effets de la matière organique sur "l'expression" (la biodisponibilité) de la toxicité de substances modèles ; trois Hydrocarbures Aromatiques Polycycliques (HAP) : le fluoranthène, le benzo(k)fluoranthène et le phénanthrène. En effet... |
| Tipo: Text |
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| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00132/24288/22286.pdf |
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| Loret, Pascale; Le Gall, Solange; Dupuy, Christine; Blanchot, Jean; Pastoureaud, Annie; Delesalle, Bruno; Caisey, Xavier; Jonquieres, Gerard. |
| Pearl oysters are farmed in oligotrophic tropical atoll lagoons where planktonic communities are dominated by production from cyanobacteria smaller than 2 pm. Paradoxically, the pearl oyster Pinctada margaritifera only retains particles larger than 2 Pm. In this study, we assess the relative contribution of hetero/mixotrophic microbiota to the available planktonic resource. In Takapoto Atoll, picocyanobacteria are the dominant biomass (20 mug C l(-1)). The carbon biomass of ciliates and dinoflagellates ranges from 1 to 24 and 0.5 to 5 mug C l(-1) respectively, with a mean of 6 mug C l(-1) for ciliates and 2 mug C l(-1) for dinoflagellates. The possible retention by P. margaritifera on a natural protist suspension was investigated. Due to its high clearance... |
| Tipo: Text |
Palavras-chave: Trophic resource; Picoplankton; Pinctada margaritifera; Pearl oysters; Atoll lagoon; Protists. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/publication-823.pdf |
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| Bedier, Edouard; Knoery, Joel Radford; Fleury, Pierre-gildas; Quiniou, Francoise; Langlade, Aime; Cozic, Amandine; Delesmont, Edith; Delesmont, Régis; Caisey, Xavier; Lecureuil, Laetitia. |
| The phenomenon of summer mortalities of the Pacific cupped oyster Crassostrea gigas is observed in France since the beginning of the 90's. These mortalities are classically associated to younger stages and summer temperatures and occur during the reproduction period of the animal. The studies undertaken during the project Morest (2001-2005), showed that a number of biological and environmental risks, the interaction of them induces lethal stresses for animals in physiological weakness, exists in summer. Among these risks, that which is withstood by the oysters bred close to the sediment proved to be significant in intertidal areas. In Quiberon bay (southern Brittany, France), the breeding practices of sowing oysters in deep water is thus likely to expose... |
| Tipo: Text |
Palavras-chave: Huître; Crassostrea gigas; Mortalité; Sédiment; Composé réduit; Flux; Sulfure; Ammonium; Oyster; Crassostrea gigas; Mortality; Sediment; Reduced compound; Flux; Sulphide; Ammonia. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/00108/21956/19550.pdf |
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| Lunven, Michel; Robert, Stephane; Caisey, Xavier; Rodriguez, Julien; Detcheverry, Sebastien; Gaffet, Jean-dominique; Le Gall, Erwan; Vasquez, Mickael. |
| Ce poster présente une méthodologie d’investigation des fonds marin par vidéo sous marine. Le système est constitué d’un bâti intégrant une caméra, un projecteur, un altimètre ainsi que des pointeurs laser. Les images vidéo des fonds marins sont retransmises et enregistrées à bord du navire sur disque dur et magnétoscope numérique DVCAM. Lors des profils vidéo, le logiciel de gestion VIDEONAV permet de constituer un fichier de navigation intégrant les positions géographiques, le code temps du magnétoscope ainsi que la surface visualisée calculée à partir de la hauteur de prise de vue par rapport au fond. En temps différé, VIDEONAV permet le rejeu de la navigation et des bandes vidéo associées dans le but de compléter ou de générer des fichiers de... |
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| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00144/25516/23656.pdf |
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| Robert, Stephane; Le Moine, Olivier; Lunven, Michel; Caisey, Xavier; Gaffet, Jean-dominique; Le Gall, Erwan; Vasquez, Mickael; Rodriguez, Julien; Detcheverry, Sebastien; Goulletquer, Philippe. |
| Placopecten magellanicus production in Saint Pierre et Miquelon (NW North Atlantic) has been developed through direct seeding of juveniles on leased areas. However, most of the culture occurs in deep water ranging from 30 to 70 meters, which requires a monitoring by video to facilitate the grow-out and survival evaluation. In August 2008, a submersible leaded structure was connected by a video cable to the surface and observation screen was defined through the video, an altimeter and two lasers. The pictures were recorded on board on hard drive and digital video recorder DVCAM, and data were georeferenced by VIDEONAV software. Analysing the video tapes allows to establish a thematic database on the ground structure, presence or absence of seeded and wild... |
| Tipo: Text |
Palavras-chave: Scallops; Placopecten magellanicus; GIS; Monitoring; Miquelon Bay. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00134/24544/22576.pdf |
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| Taormina, Bastien; Marzloff, Martin; Desroy, Nicolas; Caisey, Xavier; Dugornay, Olivier; Metral Thiesse, Emmanuelle; Tancray, Aurelien; Carlier, Antoine. |
| Underwater imagery is increasingly used as an effective and repeatable method to monitor benthic ecosystems. Nevertheless, extracting ecologically relevant information from a large amount of raw images remains a time-consuming and somewhat laborious challenge. Thus, underwater imagery processing needs to strike a compromise between time-efficient image annotation and accuracy in quantifying benthic community composition. Designing and implementing robust image sampling and image annotation protocols are therefore critical to rationally address these trade-offs between ecological accuracy and processing time. The aim of this study was to develop and to optimize a reliable image scoring strategy based on the point count method using imagery data acquired on... |
| Tipo: Text |
Palavras-chave: Benthic monitoring; Fouling community; Sampling design; Taxonomic resolution; Underwater imagery. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00599/71160/69550.pdf |
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| Hamon, Dominique; Ehrhold, Axel; Houlgatte, Eric; Kerdoncuff, Julien; Gaffet, Jean-dominique; Caisey, Xavier; Alix, Anne-sophie; Oger-jeanneret, Helene. |
| Poster présenté aux Journées REBENT Brest les 13 et 14/10/2011 (2ème atelier de restitution Rebent Bretagne. Dans le cadre du programme de surveillance DCE, et en lien avec le projet REBENT, il a été entrepris en 2008-2009 de cartographier et de caractériser les principaux bancs de maërl distribués dans 9 masses d'eaux autour de la Bretagne, et faisant l'objet pour la plupart d'un suivi annuel de leur biodiversité, assuré par l'IUEM (LEMAR). |
| Tipo: Text |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00042/15275/12631.pdf |
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| Registros recuperados: 26 | |
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