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Ropert, Michel / Lazure, Pascal - 2011La phase opérationnelle du projet HYDRORUN, initié fin 2009, a débuté en avril 2010. A l'échéance de fin 2012, HYDRORUN devrait proposer aux décideurs et aux acteurs du littoral Réunionnais de nouveaux outils d'aide à la décision en matière de préservation et de gestion de la qualité des...Contributeur (s):
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Le Goff, Ronan / Ropert, Michel / Scolan, Pierre / Bajjouk, Touria / Liabot, Pierre Olivier / Mouquet, Pascal / Zubia, Mayalen / Cambert, Harold / Quod, Jean-pascal / Turquet, Jean - 2011Le présent document présente les travaux réalisés en 2010 dans le cadre du projet « Bio Indication à La Réunion ; contribution à la définition d’indicateur récifs coralliens à La Réunion ». Suite à la récupération et à l’analyse des données « milieu marin » déjà disponibles à La Réunion et aux...Contributeur (s):
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Marchand, Michel / Amouroux, Isabelle / Bedier, Edouard / Belin, Catherine / Claisse, Didier / Daniel, Anne / Denis, Jacques / Lampert, Luis / Le Mao, Patrick / Maisonneuve, Christine / Ropert, Michel - 2010L’Ifremer opère de façon coordonnée à l’échelle de l’ensemble du littoral métropolitain plusieurs réseaux de surveillance : le réseau de contrôle microbiologique (REMI), le réseau de surveillance du phytoplancton et des phycotoxines (REPHY), le réseau d’observation de la contamination chimique (...Contributeur (s):
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Lartaud, Franck / De Rafelis, Marc / Ropert, Michel / Emmanuel, Laurent / Geairon, Philippe / Renard, Maurice - 2010We developed a growth model for Crassostrea gigas oyster shells based on the use of in situ temporal manganese markings to calibrate natural cathodoluminescence (CL) changes in the shell hinge sections. A 30 min to 4-h exposure period with Mn2+ (90-120 mg l(-1)) was sufficient to create a...Contributeur (s):
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Denis, L / Desroy, Nicolas / Ropert, Michel - 2007A laboratory flume study was conducted to determine the effect of flow velocity on clearance rates of the Polychaeta Terebellidea Lanice conchilega (Pallas, 1966). Using sets of 75 individuals collected along the east coast of the English Channel, we measured clearance rates at five flow velocities...Contributeur (s):
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Bedier, Edouard / Fleury, Pierre-gildas / Langlade, Aime / Haure, Joel / Le Roux, A. / Ropert, Michel / Rauflet, Fabienne / Soletchnik, Patrick - 2004The "sedimentary risk" has been identified since the mid-nineties in the Marennes Oléron Bay. The proximity of the sediment (from 0 to 15cms) increases the mortality rate. Depending on the year, mortality can be 10 to 20 % higher than in "high" conditions (50 to 70cms). These...Contributeur (s):
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Ropert, Michel / Lefebvre, Sebastien / Soletchnik, Patrick / Blin, J. L. / Faury, Nicole / Struski, Caroline - 2004The "trophic risk" has been demonstrated in the bioenergetic model developed in vivo and based on various diet conditions similar to those of different types of oyster culture basins (eutrophic, heterotrophic and oligotrophic) [22, 23]. The trophic resource mortality relationship...Contributeur (s):
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The role of freshwater is more difficult to comprehend. It might act as a detrital organic matter "vector" (during floods) or an anthropic waste "vector" (toxic molecules from agriculture or other industries; nutritive salts from leaching...). Its effect has been demonstrated in...Contributeur (s):
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Ropert, Michel / Rauflet, Fabienne / Soletchnik, Patrick / Geairon, Philippe / Bedier, Edouard / Bouget, Jean-francois - 2004Temperature affects undoubtedly the 3 working sites where, systematically, the observation of the first abnormal mortalities coincides with a water temperature of around 19°C. The nature of the processes implied could have a "cumulative" effect, affecting the physiology (this phenomenon...Contributeur (s):
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Soletchnik, Patrick / Le Moine, Olivier / Faury, Nicole / Guilpain, Patrice / Geairon, Philippe / Razet, Daniel / Seugnet, Jean-luc / Robert, Stephane / Ropert, Michel / Simonne, Charlotte / Hugonnet, Virginie / Moal, Jeanne / Pouvreau, Stephane / Huvet, Arnaud / Samain, Jean-francois / Lambert, Christophe / Soudant, Philippe / Frouel, Stephane / Choquet, Gwenaelle / Delaporte, Maryse / Paillard, Christine - 2002Four laboratories are involved in this multidisciplinary study: the Conchological Laboratory of Normandie (LCN), the Invertebrates Physiology Laboratory (LPI), the Université Bretagne Occidentale (LEMAR IHP) and the Conchological Laboratory of Poitou-Charentes (LCPC). The part of the study which is...Contributeur (s):
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Buestel, Dominique / Ropert, Michel / Prou, Jean / Goulletquer, Philippe - 2009The history of French oyster culture consists of a succession of developmental phases using different species, followed by collapses caused by diseases. The indigenous species Ostrea edulis was replaced first with Crassostrea angulata, then C. gigas. France is now the top producer and consumer of...Contributeur (s):
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Lartaud, Franck / Emmanuel, Laurent / De Rafelis, Marc / Ropert, Michel / Labourdette, Nathalie / Richardson, Christopher A. / Renard, Maurice - 2010Cathodoluminescence (CL) microscopy of the foliated calcite shell hinge sections of live-collected oyster Crassostrea gigas collected at seven locations along a latitudinal gradient from the Netherlands in the North Sea to the Atlantic coast of France, revealed variations in luminescence that were...Contributeur (s):
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Degremont, Lionel / Boudry, Pierre / Ropert, Michel / Samain, Jean-francois / Bedier, Edouard / Soletchnik, Patrick - 2010This study investigated the effects of age (first or second summer of life) and environment (three study sites on French coasts) on summer mortality in Crassostrea gigas, using three generations of oysters produced during the Morest project. For each generation, two groups of oysters, selected...Contributeur (s):
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Faury, Nicole / Geairon, Philippe / Moal, Jeanne / Pouvreau, Stephane / Razet, Daniel / Ropert, Michel / Soletchnik, Patrick - 2003Proximate biochemical analysis (proteins, lipids and carbohydrates) are performed on a regular basis by the various laboratories fom the Aquaculture Resources Directorate. Methods initially developed to analyse hydrological parameters were firstly transfered to assess meat components.1t appears now...Contributeur (s):
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Royer, J / Ropert, Michel / Costil, K - 2007Summer mortalities have been observed in French shellfish areas (including Normandy) since 1994, but origin of this syndrome remains unclear and is suspected to be caused by a combination of several interacting extrinsic (biotic and abiotic) and intrinsic (genetic, physiological, immunological)...Contributeur (s):