18 results on '"Quemener, Loïc"'
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2. French coastal network for carbonate system monitoring: The CocoriCO2 dataset
- Author
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Petton, Sébastien, Pernet, Fabrice, Le Roy, Valerian, Huber, Matthias, Martin, Sophie, Mace, Eric, Bozec, Yann, Loisel, Stephane, Rimmelin-maury, Peggy, Grossteffan, Emilie, Repecaud, Michel, Quemener, Loïc, Retho, Michael, Manach, Soazig, Papin, Mathias, Pineau, Philippe, Lacoue-labarthe, Thomas, Deborde, Jonathan, Costes, Louis, Polsenaere, Pierre, Rigouin, Loic, Benhamou, Jeremy, Gouriou, Laure, Lequeux, Josephine, Labourdette, Nathalie, Savoye, Nicolas, Messiaen, Gregory, Foucault, Elodie, Ouisse, Vincent, Richard, Marion, Lagarde, Franck, Voron, Florian, Kempf, Valentin, Mas, Sebastien, Giannecchini, Lea, Vidussi, Francesca, Mostajir, Behzad, Leredde, Yann, Alliouane, Samir, Gattuso, Jean-pierre, Gazeau, Frederic, Petton, Sébastien, Pernet, Fabrice, Le Roy, Valerian, Huber, Matthias, Martin, Sophie, Mace, Eric, Bozec, Yann, Loisel, Stephane, Rimmelin-maury, Peggy, Grossteffan, Emilie, Repecaud, Michel, Quemener, Loïc, Retho, Michael, Manach, Soazig, Papin, Mathias, Pineau, Philippe, Lacoue-labarthe, Thomas, Deborde, Jonathan, Costes, Louis, Polsenaere, Pierre, Rigouin, Loic, Benhamou, Jeremy, Gouriou, Laure, Lequeux, Josephine, Labourdette, Nathalie, Savoye, Nicolas, Messiaen, Gregory, Foucault, Elodie, Ouisse, Vincent, Richard, Marion, Lagarde, Franck, Voron, Florian, Kempf, Valentin, Mas, Sebastien, Giannecchini, Lea, Vidussi, Francesca, Mostajir, Behzad, Leredde, Yann, Alliouane, Samir, Gattuso, Jean-pierre, and Gazeau, Frederic
- Abstract
Since the beginning of the industrial revolution, atmospheric carbon dioxide (CO2) concentrations have risen steadily and have induced a decrease of the averaged surface ocean pH by 0.1 units, corresponding to an increase in ocean acidity of about 30 %. In addition to ocean warming, ocean acidification poses a tremendous challenge to some marine organisms, especially calcifiers. The need for long-term oceanic observations of pH and temperature is a key element to assess the vulnerability of marine communities and ecosystems to these pressures. Nearshore productive environments, where a large majority of shellfish farming activities are conducted, are known to present pH levels as well as amplitudes of daily and seasonal variations that are much larger than those observed in the open ocean. Yet, to date, there are very few coastal observation sites where these parameters are measured simultaneously and at high frequency. To bridge this gap, an observation network was initiated in 2021 in the framework of the CocoriCO(2) project. Six sites were selected along the French Atlantic and Mediterranean coastlines based on their importance in terms of shellfish production and the presence of high- and low-frequency monitoring activities. At each site, autonomous pH sensors were deployed, both inside and outside shellfish production areas, next to high-frequency CTD (conductivity-temperature-depth) probes operated through two operating monitoring networks. pH sensors were set to an acquisition rate of 15 min, and discrete seawater samples were collected biweekly in order to control the quality of pH data (laboratory spectrophotometric measurements) as well as to measure total alkalinity and dissolved inorganic carbon concentrations for full characterization of the carbonate system. While this network has been up and running for more than 2 years, the acquired dataset has already revealed important differences in terms of pH variations between monitored sites related to the in
- Published
- 2024
- Full Text
- View/download PDF
3. French coastal network for carbonate system monitoring: The CocoriCO2 dataset
- Author
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Petton, Sébastien, primary, Pernet, Fabrice, additional, Le Roy, Valérian, additional, Huber, Matthias, additional, Martin, Sophie, additional, Macé, Eric, additional, Bozec, Yann, additional, Loisel, Stéphane, additional, Rimmelin-Maury, Peggy, additional, Grossteffan, Emilie, additional, Repecaud, Michel, additional, Quemener, Loïc, additional, Retho, Michael, additional, Manac'h, Saozig, additional, Papin, Mathias, additional, Pineau, Philippe, additional, Lacoue-Labarthe, Thomas, additional, Deborde, Jonathan, additional, Costes, Louis, additional, Polsenaere, Pierre, additional, Rigouin, Loïc, additional, Benhamou, Jérémy, additional, Gouriou, Laure, additional, Lequeux, Joséphine, additional, Labourdette, Nathalie, additional, Savoye, Nicolas, additional, Messiaen, Grégory, additional, Foucault, Elodie, additional, Ouisse, Vincent, additional, Richard, Marion, additional, Lagarde, Franck, additional, Voron, Florian, additional, Kempf, Valentin, additional, Mas, Sébastien, additional, Giannecchini, Léa, additional, Vidussi, Francesca, additional, Mostajir, Behzad, additional, Leredde, Yann, additional, Alliouane, Samir, additional, Gattuso, Jean-Pierre, additional, and Gazeau, Frédéric, additional
- Published
- 2023
- Full Text
- View/download PDF
4. List of Contributors
- Author
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Achterberg, Eric P., primary, Allen, Simon, additional, Alves, José C., additional, Aragon, David, additional, Au, Douglas, additional, Barnes, Christopher R., additional, Barus, Carole, additional, Beaton, Alex, additional, Bell, Ryan J., additional, Blouch, Pierre, additional, Brault, Patrice, additional, Carvalho, Filipa, additional, Cervantes, Pablo, additional, Chen Legrand, D., additional, Colas, Florent, additional, Cowles, Timothy, additional, Cruz, Nuno A., additional, David, Arnaud, additional, Fernandez, Joaquin del Rio, additional, Delauney, Laurent, additional, Delory, Eric, additional, Dewitte, Boris, additional, Ferreira, Bruno M., additional, Fischer, Albert, additional, Garçon, Veronique, additional, Glenn, Scott, additional, Harcourt, Robert, additional, Heupel, Michelle R., additional, Jirka, Simon, additional, Jońca, Justyna, additional, Jones, Clayton, additional, Jugeau, Benoit, additional, Kibelka, Gottfried P.G., additional, Kim Juniper, S., additional, Kohut, Josh, additional, Laspidou, Chrysi, additional, Leadbetter, Adam, additional, Leblond, Emilie, additional, Lédée, E.J.I., additional, Mahfuz, Hassan, additional, Manes, Carmem-Lara, additional, Martinez, Enoc, additional, Martinez, Sergio, additional, Matos, Aníbal C., additional, McDonnell, Janice, additional, McLean, Scott, additional, Memè, Simone, additional, Toma, Daniel Mihai, additional, Miles, Travis, additional, Sabet, Seyed Morteza, additional, Mowlem, Matthew, additional, Muñoz Parra, P., additional, O’Reilly, Tom, additional, Ove Möller, Klas, additional, Pearlman, Jay, additional, Petersen, Wilhelm, additional, Pirenne, Benoît, additional, Poli, Paul, additional, Precheur, Hervé, additional, Quemener, Loïc, additional, Ralston, Emily, additional, Ramos, Marcel, additional, Reitz, Anja, additional, Rieke, Matthes, additional, Roarty, Hugh, additional, Romanytsia, Ivan, additional, Round, Adrian, additional, Ruiz, Pablo, additional, Saba, Grace, additional, Schaap, Allison, additional, Schofield, Oscar, additional, Seroka, Greg, additional, Stasch, Christoph, additional, Striebig, Nicolas, additional, Timothy Short, R., additional, Toler, Strawn K., additional, Udyawer, Vinay, additional, Valladares, Maria, additional, Visbeck, Martin, additional, Walsh, Ian, additional, Wild-Allen, Karen, additional, Woerther, Patrice, additional, Woillez, Mathieu, additional, Wollschläger, Jochen, additional, Yi, Xu, additional, and Hunsucker, Kelli Zargiel, additional
- Published
- 2019
- Full Text
- View/download PDF
5. French coastal network for carbonate system monitoring: The CocoriCO2 dataset.
- Author
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Petton, Sébastien, Pernet, Fabrice, Roy, Valérian Le, Huber, Matthias, Martin, Sophie, Macé, Éric, Bozec, Yann, Loisel, Stéphane, Rimmelin-Maury, Peggy, Grossteffan, Émilie, Repecaud, Michel, Quemener, Loïc, Retho, Michael, Manac’h, Soazig, Papin, Mathias, Pineau, Philippe, LacoueLabarthe, Thomas, Deborde, Jonathan, Costes, Louis, and Polsenaere, Pierre
- Subjects
ATMOSPHERIC carbon dioxide ,GROUNDWATER monitoring ,OCEAN acidification ,SENSOR networks ,MARINE ecology ,CARBONATES - Abstract
Since the beginning of the industrial revolution, atmospheric carbon dioxide (CO
2 ) concentrations have risen steadily and have induced a decrease of the averaged surface ocean pH by 0.1 units, corresponding to an increase in ocean acidity of about 30 %. In addition to ocean warming, ocean acidification poses a tremendous challenge to some marine organisms, especially calcifiers. The need for long-term oceanic observations of pH and temperature is a key element to assess the vulnerability of marine communities and ecosystems to these pressures. Nearshore productive environments, where a large majority of shellfish farming activities are conducted, are known to present pH levels as well as amplitudes of daily and seasonal variations that are much larger than those observed in the open ocean. Yet, to date, there are very few coastal observation sites where these parameters are measured simultaneously and at high frequency. To bridge this gap, an observation network was initiated in 2021 in the framework of the CocoriCO2 project. Six sites were selected along the French Atlantic and Mediterranean coastlines based on their importance in terms of shellfish production and the presence of high- and low-frequency monitoring activities. At each site, autonomous pH sensors were deployed both inside and outside shellfish production areas, next to high-frequency CTD (conductivity- temperature-depth) probes operated through two operating monitoring networks. pH sensors were set to an acquisition rate of 15 min and discrete seawater samples were collected biweekly in order to control the quality of pH data (laboratory spectrophotometric measurements) as well as to measure total alkalinity and dissolved inorganic carbon concentrations for full characterization of the carbonate system. While this network has been up and running for more than two years, the acquired dataset has already revealed important differences in terms of pH variations between monitored sites related to the influence of diverse processes (freshwater inputs, tides, temperature, biological processes). [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
6. Extreme event occurrences and impacts in coastal waters of western Europe
- Author
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Poppeschi, Coline, primary, Unterberger, Maximilian, additional, Charria, Guillaume, additional, Rimmelin-Maury, Peggy, additional, Goberville, Eric, additional, Barrier, Nicolas, additional, Grossteffan, Emilie, additional, Repecaud, Michel, additional, Quemener, Loïc, additional, Theetten, Sébastien, additional, Petton, Sébastien, additional, Le Roux, Jean-François, additional, and Tréguer, Paul, additional
- Published
- 2020
- Full Text
- View/download PDF
7. ORFISH - Development of innovative, low-impact offshore fishing practices for small-scale vessels in outermost regions - MARE/2015/06. WP3 Developing and testing low impact fishing techniques
- Author
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Berthou, Patrick, Macabiau, Christophe, Begot, Eric, Le Blond, Samuel, Henrique, Ramos, Cruces, Lorenzo, Lucas, Georges, Gomez, Cesar, Lebechnech, Léa, GUYADER OLIVIER, Quemener, Loïc, Vignot, Celine, and Emilie Leblond
- Abstract
In many European fisheries and particularly ORs, small-scale vessels are often multipurpose targeting different species using different gears. Given the narrow island shelves, vessels may develop their activity in coastal areas, on the edge of the continental shelf or offshore in deep-water or large pelagic fisheries but it is currently difficult to quantify the distribution of fishing effort between the different fishing gears and between the different areas. it is an important issue to better quantify the fishing effort, its spatial and temporal distribution with the principal objective of alleviating fishing pressure on the coastal fishing resources. The EU legislation requires that all coastal EU countries over 12 meters should set up a Vessel Monitoring System (VMS). Used by the fisheries authorities for real time fisheries controls, VMS data and more generally any geo-tracking devices can also be used for knowledge and scientific purposes, especially for the analysis of fishing effort distribution. Without such geo-tracking device for the smaller vessels, it is much more difficult to spatialize the activity of SSCF, strongly dependent of coastal limited territories and highly submitted to concurrent uses. In this study, we propose to experiment the equipment a sample of voluntary fishing vessels with geo-tracking devices in different ORs, in order to follow the distribution of their fishing activity, only for knowledge purposes. The experiment will concern a maximum of 4 voluntary fishers by OR with a strong priority for the vessels involved in the experimental fishing trips (see previous tasks). The Task benefited from the experience of Ifremer, which developed the Recopesca project in the early 2000s, to equip a high-frequency geolocation system for voluntary vessels, including small-scale coastal fishing vessels. https://wwz.ifremer.fr/recopesca/Le-projet-RECOPESCA/Description-du-projet.
- Published
- 2019
8. Effect of some repetitive factors on turbot stress response
- Author
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Mugnier, Chantal, Fostier, Alexis, Guezou, Sylvie, Gaignon, Jean-Louis, and Quemener, Loïc
- Published
- 1998
9. Observer, Analyser et Gérer la variabilité de la reproduction et du recrutement de l’huître creuse en France : Le Réseau Velyger. Rapport annuel 2012
- Author
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Stéphane Pouvreau, Bellec, Gwenael, Le Souchu, Pierrick, Queau, Isabelle, Talarmain, Eric, Marianne Alunno-Bruscia, Auby, Isabelle, Maurer, Daniele, Claire Meteigner, Tournaire, Marie-Pierre, Amico Florence, D., Rumebe, Myriam, Elodie Fleury, Langlade, Aime, Bouget, Jean-Francois, Collin, Karine, Fortune, Mireille, Benoist Hitier, Bedier, Edouard, Robert, Stephane, Guilpain, Patrice, Grizon, James, Seugnet, Jean-Luc, Guesdon, Stephane, Franck Lagarde, Le Gall, Patrik, Messiaen, Gregory, Orbcastel Emmanuelle, Roque D., Gohin, Francis, Bryere, Philippe, Quemener, Loïc, Repecaud, Michel, Karenn Bucas, Barbot, Stephane, Guillemot, Anne, Nonnotte, Lidwine, Duros, Wenceslas, Bonnat, Armel, Stéphane Tarot, Mille, Dominique, Geay, Amelie, and Bouquet, Anne-Lise
- Abstract
La conchyliculture, et principalement l’élevage de l’huître creuse, Crassostrea gigas, constitue la principale activité aquacole française. Cette activité repose, en grande partie, sur le recrutement naturel de l’espèce qui assure 70% des besoins en jeunes huîtres (naissain) : cette activité de collecte s’appelle le captage. Les deux principaux centres de captage en France sont les bassins d’Arcachon et de Marennes-Oléron. Or, depuis une dizaine d'années, sur le Bassin d'Arcachon, le captage devient très variable: à des années de captage nul (par exemple les années 2002, 2005, 2007) ou faible (2009, 2010, 2011) succèdent des années excellentes voire pléthoriques (les années 2003, 2006, 2008, 2012). A Marennes-Oléron, cette variabilité existe, mais s’avère beaucoup moins marquée. En outre, à la faveur du lent réchauffement des eaux, le captage peut désormais se pratiquer de plus en plus vers le nord. Ainsi, la Baie de Bourgneuf, mais aussi la Rade de Brest sont devenues, depuis quelques années, des secteurs où un nombre croissant d’ostréiculteurs pratiquent avec succès le captage, mais avec, là aussi, des irrégularités dans le recrutement qu’il convient de comprendre. Enfin, depuis la crise des mortalités de 2008, il se développe aussi sur l’Etang de Thau une volonté de pratiquer le captage. Afin de mieux comprendre les facteurs de variations du captage, l’Ifremer a mis en place, à la demande du Comité National de la Conchyliculture, un réseau national de suivi de la reproduction : le Réseau Velyger. Créé en 2008 sur fonds européens et financé désormais par la Direction des Pêches Maritimes et de l’Aquaculture, ce réseau apporte, chaque année, sur les écosystèmes cités précédemment, une série d’indicateurs biologiques (maturation, fécondité, date de ponte, abondance et survie larvaire, intensité du recrutement, survie du naissain) dont l’analyse croisée avec des indicateurs hydrologiques et climatiques permet progressivement de mieux appréhender les causes de variabilité du recrutement de l’huître creuse en France, modèle biologique et espèce clé de la conchyliculture française. Ce rapport présente donc les résultats 2012 de ce réseau d’observation et fait appel, pour la partie hydro-climatique, à des observations acquises par d’autres réseaux. Il détaille toutes les caractéristiques par secteur du cycle de reproduction de l’huitre creuse : maturation des adultes, période de ponte, abondance et survie des larves, intensité du captage et mortalités précoces. Il fournit ensuite une interprétation et une synthèse des résultats 2012 par secteur et à la lueur des résultats des années antérieures. Ainsi, pour l’année 2012, on retiendra les faits majeurs suivants : • Après une année 2011 particulièrement sèche, l’année 2012 s’avère plutôt humide à partir du printemps avec un gradient Nord-Sud marqué. Ce gradient se retrouve dans les concentrations phytoplanctoniques : elles sont élevées en Rade de Brest et Baie de Bourgneuf, normales à faibles du Bassin de Marennes Oléron à l’Etang de Thau. En outre, jusqu’au mois de juillet, les températures de l’air et de l’eau sont tout justes dans les normes voire déficitaires pour les sites les plus au nord. • Ces conditions hydro-climatiques ont imprimé un gradient dans la maturation et la fécondité des huitres adultes avec un indice de condition très élevé en Rade de Brest, élevé en Baie de Bourgneuf, normal à faible du Bassin de Marennes Oléron à l’Etang de Thau. En outre, le manque de chaleur jusqu’en juillet s’est traduit par une ponte plutôt tardive sur l’ensemble des écosystèmes de la côte atlantique, à l’exception de la ponte en Baie de Bourgneuf qui a été très précoce compte tenu des conditions. A contrario, le Bassin d’Arcachon enregistre la ponte la plus tardive jamais observée sur ce secteur (au-delà du 15 août). A ce titre, le mécanisme du déclenchement de la ponte mériterait une attention particulière dans les années à venir. • Cela dit, grâce à un mois d’août favorable sur le plan thermique, les cohortes larvaires présentes à cette période ont eu une survie normale à bonne (e.g. 0.3 à 0.8 %), ce qui s’est traduit par un captage modéré à bon sur l’ensemble des secteurs de la façade atlantique. Il convient cependant de noter que la ponte trop précoce en Baie de Bourgneuf, qui s’est déroulée dans des eaux fraîches, n’a pas permis une bonne évolution de la cohorte larvaire (survie de 0.03 %) et le captage reste, sur ce secteur, faible à modéré en 2012. • En conséquence, l’année 2012, très différente de l’année 2011, se caractérise par un captage qualifié de « bon » dans le Bassin d’Arcachon (~230 naissains/coupelle), modéré dans le Bassin de Marennes-Oléron (~ 180 naissains/coupelle) et en Rade de Brest (~ 100 naissains/coupelle), modéré à faible en Baie de Bourgneuf (15 naissains/coupelle) et faible à nul dans l’étang de Thau (~ 5 naissains/coupelle). Ce rapport montre aussi que l’étang de Thau joue un rôle d’exception. Malgré une ponte d’intensité normale, des abondances de larves élevées et une bonne survie des cohortes, le captage 2012 y est très faible ce qui positionne l’étang de Thau en dehors du modèle de fonctionnement admis pour le cycle de reproduction de l’huître creuse sur la façade atlantique. Il semble que, sur ce site, la métamorphose constitue un verrou biologique qu’il convient d’étudier.
- Published
- 2013
10. The Recopesca Project : a new example of participative approach to collect fisheries and in situ environmental data
- Author
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Emilie Leblond, Pascal Lazure, Laurans, Martial, Rioual, Celine, Woerther, Patrice, Quemener, Loïc, and Berthou, Patrick
- Abstract
Face to the lack of data to assess precisely the spatial distribution of catches and fishing effort and for the environmental characterization of the fishing area, Ifremer has been implemented since 2005 a new project, Recopesca. It consists in fitting out a sample of voluntary fishing vessels with sensors recording data on fishing effort (and at mid-terms catches) and physical parameters such as temperature or salinity. Recopesca aims at setting up a network of sensors, for scientific purposes, to collect data and improve resources assessment and diagnostics on fisheries, and environmental data required for ecosystem-based management initiatives. The challenge was to develop sensors with no trouble for the fishermen, tough enough to be fixed up on fishing gears, self powered and autonomous. Insofar as the sample of targeted vessels intends to be representative of all the metiers and fleets, the sensors are modular and scalable to collect new data. Different sensors have been implemented: (i) a temperature-salinity sensor, able to record physical parameters, depth and duration of immersion, for passive and active gears, and (ii) a specific sensor to record number or length of passive gears. A GPS monitors the position of the vessels and the temperature or salinity profiles and series. Each sensor is equipped with a radio device transferring the data to a receiver on-board, called “concentrator” that sends the data to Ifremer central databases by GPRS. An anti-rolling weigh-scale has been developed and is currently on test to record catches per species and fishing operation. The presentation will show the first data and results of this participative approach.
- Published
- 2010
11. Effect of temperatura, volume of ova batches, and addition of a diluent, an antibiotic, oxygen and a protein inhibitor on short-term storage capacities of turbot, Psetta maxima, ova.
- Author
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Suquet, Marc, Chereguini, Olvido, Omnes, Marie-Hélène, Normant, Inmaculada Rasines Yvon, Souto, Isabel Pan, and Quemener, Loïc
- Published
- 1999
12. RESCO - National framework for spatial and temporal evolution of summer mortality : Results 2014
- Author
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Amico Florence, D., Bouget, Jean-Francois, Chabirand, Jean-Michel, Fouillaron, Pierre, Grizon, James, Lamoureux, Alice, Lebrun, Luc, Patrik Le Gall, Louis, Wilfried, Mary, Charlotte, Maurer, Daniele, Mortreux, Serge, Julien Normand, Palvadeau, Hubert, Penot, Julia, Pepin, Jean-Francois, Sébastien Petton, Pien, S., Stéphane Pouvreau, Queau, Isabelle, Robert, Stephane, Seugnet, Jean-Luc, Lefe, V., Quemener, Loïc, Masson, Jean-Claude, Dominique Soudant, Haury, A., Petton Bruno, and Cheve, Julien
13. SOMLIT-Brest / MAREL-Iroise : des séries d’observation physico-chimiques au service de la recherche scientifique
- Author
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Helguen Stéphane, L., Rimmelin-Maury Peggy, Michel REPECAUD, Quemener, Loïc, Beaumont L., Grosssteffan Emilie, Tréguer Paul, and Bozec Yann
- Abstract
Les écosystèmes côtiers sont soumis à de multiples forçages physiques et chimiques qui agissent à des échelles de temps très différentes. Pour décrire et prédire l’impact de ces forçages sur les écosystèmes, il est impératif de mesurer à long terme les caractéristiques physiques, chimiques et biologiques des eaux côtières. Depuis plus de 15 ans, un partenariat réunit l’IUEM/UBO, l’IFREMER et l'INSU pour assurer le suivi régulier et à long terme de la physico-chimie des eaux côtières à l’interface de la rade de Brest et de la mer d’Iroise (site de Ste Anne du Portzic, 48°21’60 N, 4°33’04 W ). Ce suivi repose sur une stratégie combinée de mesures à basse fréquence (série SOMLIT-Brest - Service d’Observation en Milieu LITtoral) et de mesures à haute fréquence (série MAREL-Iroise - Mesure Automatisée en Réseau de l’Environnement Littoral).
14. Velyger project (2008-2010) : Observation, Analyze and Managemement of the reproduction of the Pacific Oyster on the French coast
- Author
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Stéphane Pouvreau, Bernard, Ismael, Le Souchu, Pierrick, Arnaud Huvet, Talarmain, Eric, Auby, Isabelle, Maurer, Daniele, Claire Meteigner, Tournaire, Marie-Pierre, Amico Florence, D., Rumebe, Myriam, Nadine Neaud-Masson, Bedier, Edouard, Martin, Anne-Genevieve, Claude, Serge, Langlade, Aime, Bouget, Jean-Francois, Benoist Hitier, Stanisiere, Jean-Yves, Breerette, Stephane, Robert, Stephane, Guilpain, Patrice, Seugnet, Jean-Luc, Guesdon, Stephane, Soletchnik, Patrick, Le Moine, Olivier, Dumas, Franck, Quemener, Loïc, Barbot, Stephane, Repecaud, Michel, Mille, Dominique, Geay, A., and Bouquet, Anne-Lise
15. La Bouée MOLIT : un nouveau concept de bouée instrumentée
- Author
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Quemener, Loïc, Repecaud, Michel, Jegou, Paul, Aoustin, Yannick, Retho, Michael, Barbot, Stephane, laurent gautier, Podeur, Christian, and Pichavant, Pascal
- Abstract
La validité du concept de station de mesure haute-fréquence Marel a été vérifié par le déploiement d’un réseau constitué de stations de type axisymétrique (Réseau Baie de Seine, Bouée Iroise en rade de Brest). Le mouillage et le comportement de ces bouées en terme d’accessibilité et de maintenance est un handicap pour l’extension vers les zones plus exposées du large. La bouée MOLIT (Mer Ouverte LITtorale) constitue une réponse technique et financière.
16. The Recopesca project: a new example of participative approach to collect in-situ environmental and fisheries data using fisheries vessels of opportunity
- Author
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Emilie Leblond, Berthou, Patrick, Laurans, Martial, Woerther, Patrice, and Quemener, Loïc
- Abstract
Face to the lack of data to assess precisely the spatial distribution of catches and fishing effort and for the environmental characterization of the fishing area, Ifremer has been implemented since 2005 a new project, Recopesca. It consists in fitting out a sample of voluntary fishing vessels with sensors recording data on fishing effort (and at mid-terms catches) and physical parameters such as temperature or salinity. Recopesca aims at setting up a network of sensors, for scientific purposes, to collect data allowing improving resources assessment and diagnostics on fisheries, and environmental data required for ecosystem-based management initiatives. The challenge was to develop sensors with no trouble for the fishermen, tough enough to be fixed up on fishing gears, self powered and autonomous. Insofar as the sample of targeted vessels intends to be representative of all the metiers and fleets, the sensors are modular and scalable to collect new data. Different sensors have been implemented: (i) a temperature-salinity sensor, able to record physical parameters, depth and duration of immersion, for passive and active gears, and (ii) a specific sensor to record number or length of passive gears. A GPS monitors the position of the vessels. Each sensor is equipped with a radio device transferring the data to a receiver on-board, called “concentrator” that sends the data to Ifremer central databases by GPRS. An anti-rolling weigh-scale is currently on development to record catches per species and fishing operation. The presentation will show the first data and results of this participative approach.
17. Hydrological extreme event occurrences and impacts linked with climate variations in coastal waters of western Europe
- Author
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Coline Poppeschi, Guillaume Charria, Unterberger, Maximilian, Goberville, Eric, Rimmelin-Maury, Peggy, Barrier, Nicolas, Sébastien Petton, Grossteffan, Emilie, Repecaud, Michel, Quemener, Loïc, Sébastien Theetten, Jean-Francois Le Roux, and Treguer, Paul
- Subjects
High and low frequency ,Numerical simulations ,Bay of Brest ,In-situ observations ,Extreme events ,Weather regimes - Abstract
The dynamics of physico-chemical processes in the bay of Brest are studied to better understand the impact of local events on the coastal ocean. We are analyzing long-term in situ data (since 2000), high and low frequencies, from the COAST-HF (buoy Marel Iroise) and SOMLIT sites, located at the entrance to the bay of Brest. This study is divided into two main stages: the detection and characterization of extreme events, followed by a numerical simulation of these events to understand the underlying oceanic processes. The focus is on desalination events during the winter months (December, January, February and March), considering the season with the greatest number of extreme events. We show the relationship between local extreme events and variability at larger scales, considering climate indices such as the North Atlantic Oscillation (NAO). A comparison between the low frequency data of the SOMLIT program and the high frequency data of the Marel buoy is carried out, highlighting the interest of high frequency measurements for the detection of extreme events. A comparison between in situ data and two numerical simulations of different resolutions is also performed over salinity time series. This study also show an interannual variability of extreme events interesting in a context of climate change. We make the link between these extreme desalination and the nitrate level in the bay of Brest. To finally study the relationship between nutrients and chlorophyll in order to look at the correlation that it can exists between extreme events and biology in the coastal environment.
18. PREVIMER: A contribution to in situ coastal observing systems
- Author
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Guillaume Charria, Repecaud, Michel, Quemener, Loïc, Menesguen, Alain, Rimmelin-Maury, Peggy, Helguen Stephane, L., Beaumont, Laurence, Jolivet, Aurelie, Morin, Pascal, Mace, E., Pascal Lazure, Romain Le Gendre, Jacqueline, Franck, romaric verney, Marie, Louis, Jegou, Paul, Le Reste, Serge, Xavier André, Dutreuil, Vincent, Regnault, Jean-Pierre, Jestin, Herve, Lintanf, Herve, Pichavant, Pascal, Retho, Michael, Jean-Pierre Allenou, Stanisiere, Jean-Yves, Bonnat, Armel, Nonnotte, Lidwine, Duros, Wenceslas, Stéphane Tarot, Thierry Carval, Le Hir, Pierre, Dumas, Franck, Vandermeirsch, Frederic, Lecornu, Fabrice, Dynamique Hydro-sédimentaire (DYNECO/DHYSED), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Institut Français de Recherche pour l'Exploitation de la Mer - Brest (IFREMER Centre de Bretagne), Université de Brest (UBO), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS)-Université de Brest (UBO), Division technique INSU/SDU (DTI), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Adaptation et diversité en milieu marin (AD2M), Station biologique de Roscoff (SBR), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), ODE/LITTORAL/LERN, Laboratoire Environnement Ressources de Normandie (LERN), Laboratoire de physique des océans (LPO), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Comportement des Structures en Mer (LCSM), REM/RDT/SI2M, ODE/LITTORAL/LERMPL, Laboratoire Laboratoire Environnement Ressources Morbihan Pays de Loire (LER/MPL), Atlantide-Altran Ouest, ALTRAN (FRANCE), Dynamique Hydro-sédimentaire (DHYSED), Dynamiques des Écosystèmes Côtiers (DYNECO), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Adaptation et diversité en milieu marin (ADMM), Institut national des sciences de l'Univers (INSU - CNRS)-Station biologique de Roscoff (SBR), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), LITTORAL (LITTORAL), Recherches et Développements Technologiques (RDT), Service Ingénierie et Instrumentation Marine (SIIM), Laboratoire Environnement Ressources Morbihan Pays de Loire (LERMPL), and Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
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[SDE]Environmental Sciences - Abstract
consultable à l'adresse suivante : http://archimer.ifremer.fr/doc/00197/30785/29143.pdf; International audience; To design a prototype for an Integrated Ocean Observing System (IOOS), at least three components are mandatory: a modeling platform, an in situ observing system and a structure to collect and to disseminate the information (e.g. database, website). The PREVIMER project followed this approach and in order to sustain model applications, PREVIMER has developed, funded and organized part of in situ observing networks in the Bay of Biscay and the Channel. For a comprehensive system, focus was addressed on fi xed platforms (MAREL MOLIT, MAREL Iroise, Island network and D4 for sediment dynamics), ships of opportunity (RECOPESCA program and FerryBoxes), and coastal profi lers (ARVOR-C/Cm). Each system is briefl y described and examples of scientifi c results obtained with corresponding data are highlighted to show how these systems contribute to solve scientifi c multidisciplinary issues from the coastal ocean dynamics to the biodiversity including pelagic and benthic habitats.
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