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Registros recuperados: 71
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Réseau de Suivi Lagunaire du Languedoc-Roussillon. Bilan des résultats 2002 ArchiMer
Laugier, Thierry; Fiandrino, Annie; Souchu, Philippe; Benau, Laurent.
The numerous coastallagoons lining the Languedoc-Roussillon mediterranean coast undergone high anthropic pressure. The Lagoon Monitoring Network as a result of partnership between Ifremer, the Languedoc- Roussillon Regional Council and the Rhône Méditerranée Corse Water Agency, apply to provide yearly a diagnostic of the environmental quality of21lagoons. This network has two main goals: • The monitoring of the state of the lagoon with regards to eutrophication and sorne specifie survey in coordination with local managers. • Management support (model simulation, synthetic infonnation, scientific support) towards local managers. This annual report gathers results of the actions planned in 2002 within the Network : • For each lagoon excosystem, results of...
Tipo: Text Palavras-chave: Lagunes littorales; Méditerranée; Eutrophisation; Diagnostic; Surveillance; Gestion; Coastal lagoon; Mediterranean; Eutrophication; Diagnostic; Monitoring; Management.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00419/53085/54046.pdf
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Malaïgue 2018 sur la lagune de Thau – Demande d’informations complémentaires ArchiMer
Richard, Marion; De Wit, Rutger; Fiandrino, Annie.
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Ano: 2018 URL: https://archimer.ifremer.fr/doc/00466/57777/79197.pdf
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OBSLAG 2016 - volet eutrophisation. Etat DCE des lagunes méditerranéennes (eau et phytoplancton, période 2011-2016). Développement d’indicateurs de tendance et de variabilité ArchiMer
Derolez, Valerie; Gimard, Antonin; Munaron, Dominique; Ouisse, Vincent; Messiaen, Gregory; Fortune, Martine; Poirrier, Samuel; Mortreux, Serge; Guillou, Jean-louis; Brun, Melanie; Provost, Charlotte; Hatey, Elise; Bec, Béatrice; Malet, Nathalie; Fiandrino, Annie.
Cette étude est réalisée dans le cadre du projet OBSLAG (OBServatoire des LAGunes) et porte sur les 10 masses d’eau lagunaires méditerranéennes situées à l’aval des cours d’eau suivis depuis 2015 par le « réseau flux » de l'Agence de l’Eau Rhône Méditerranée Corse. Le rapport correspond aux actions réalisées en 2016 dans le cadre du volet « eutrophisation » d’OBSLAG, répondant aux objectifs suivants : (1) réaliser un suivi estival du phytoplancton et de la physico-chimie de l’eau et évaluer l’état DCE de ces compartiments pour la période 2011-2016 sur les 10 masses d’eau lagunaires du suivi « réseau flux », regroupant 13 lagunes poly-euhalines. Ce suivi permet de renforcer la fréquence des suivis DCE sur la colonne d’eau et le phytoplancton, qui ne sont...
Tipo: Text Palavras-chave: Directive Cadre sur l’Eau (DCE); Lagunes; Masses d’eau de transition; Phytoplancton; Confiance; Précision; Tendance..
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00386/49744/50277.pdf
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Implementation of a 3D Coupled Hydrodynamic and Contaminant Fate Model for PCDD/Fs in Thau Lagoon (France): The Importance of Atmospheric Sources of Contamination ArchiMer
Dueri, Sibylle; Marinov, Dimitar; Fiandrino, Annie; Tronczynski, Jacek; Zaldivar, Jose-manuel.
A 3D hydrodynamic and contaminant fate model was implemented for polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in Thau lagoon. The hydrodynamic model was tested against temperature and salinity measurements, while the contaminant fate model was assessed against available data collected at different stations inside the lagoon. The model results allow an assessment of the spatial and temporal variability of the distribution of contaminants in the lagoon, the seasonality of loads and the role of atmospheric deposition for the input of PCDD/Fs. The outcome suggests that air is an important source of PCDD/Fs for this ecosystem, therefore the monitoring of air pollution is very appropriate for assessing the inputs of these contaminants. These...
Tipo: Text Palavras-chave: PCDD/F; Thau lagoon; POPs; Fate model; Hydrodynamic model.
Ano: 2010 URL: https://archimer.ifremer.fr/doc/00003/11441/7995.pdf
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Synthèse des résultats REMI - Etang de Thau - Période 1997-2006 - OMEGA Thau étape 1 ArchiMer
Serais, Ophelie; Derolez, Valerie; Fiandrino, Annie.
The yearly shellfish harvest on Thau lagoon (75 km2) is about 13 000 tons of oysters and 4 000 tons of mussels, and represents 10% of French shellfish harvest. In the microbiological monitoring network of French shellfish harvest areas, managed by Ifremer, a total of 2 374 shellfish samples were collected on Thau lagoon and analysed (Escherichia coli) on 9 sampling stations between 1997 and 2006. Despite a population increasing rate of 15.6% between 1999 and 2006 on the Thau lagoon watershed, the shellfish faecal contamination level is stable between 1997 and 2006, and corresponds to B sanitary standard, authorizing marketing for human consumption after purification. Though the microbiological quality of the lagoon’s shellfish can episodically be altered...
Tipo: Text Palavras-chave: Lagune de Thau; REMI; E. coli; Épisodes pluvieux; Impact de la pluviométrie; Qualité microbiologique des coquillages en élevage.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/00042/15338/12690.pdf
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Using Scintillometry to Estimate Sensible Heat Fluxes over Water: First Insights ArchiMer
Bouin, Marie-noelle; Legain, D.; Traulle, O.; Belamari, S.; Caniaux, G.; Fiandrino, Annie; Lagarde, Franck; Barrie, J.; Moulin, E.; Bouhours, G..
An extra large aperture scintillometer (XLAS) was used over several months across the Thau Lagoon (South of France) to retrieve one-wavelength scintillation and, thence, sensible heat flux. We present the experiment with the XLAS, an eddy-covariance station and meteorological stations measuring on or near the Thau Lagoon. Changes implemented to adapt the scintillometry processing schemes to the above water conditions are presented together with a full error budget, including sensitivity tests to the relevant parameters of the scintillometer processing scheme. The XLAS error budget amounts to 16% (systematic part) +/- 50% (random part). Sensible heat fluxes obtained using the XLAS under unstable atmospheric conditions are then compared to eddy-covariance...
Tipo: Text Palavras-chave: Air-sea fluxes; Eddy covariance; Footprint; Monin-Obukhov similarity theory; Scintillometry; Sensible heat flux.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00085/19621/17483.pdf
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Avis portant sur le dossier de demande d’autorisation unique au titre du code de l’environnement – Projet d’extension du port de Port-la-Nouvelle présenté par la Région Occitanie. ArchiMer
Munaron, Dominique; Fiandrino, Annie.
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Ano: 2017 URL: https://archimer.ifremer.fr/doc/00386/49716/80969.pdf
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Evaluation de la qualité des zones de production conchylicole. Région Occitanie. Edition 2019 ArchiMer
Serais, Ophelie; Cimiterra, Nicolas; Fiandrino, Annie; Crottier, Anais; Grouhel-pellouin, Anne; Piquet, Jean-come.
Après un rappel des objectifs, du fonctionnement et de la méthode d’interprétation des résultats du réseau de contrôle microbiologique (REMI) et du réseau de surveillance chimique (ROCCH), ce rapport comprend un bilan national et décrit le programme annuel 2018 de la région Occitanie. Il présente l’ensemble des résultats obtenus, en particulier l’estimation de la qualité microbiologique et chimique des zones de production de coquillages classées. En 2018, 28 zones de production ont été suivies par le REMI en Occitanie dont 12 dans l’Aude, 14 dans l’Hérault, 1 dans le Gard et 1 interdépartementale Hérault-Gard. Le taux de réalisation de la surveillance régulière microbiologique est de 94,9%, et 116 alertes ont été déclenchées au cours de l’année. La qualité...
Tipo: Text Palavras-chave: REMI; E. Coli; Contamination bactériologique des coquillages; ROCCH; Contaminants chimiques; Milieu marin; Occitanie; Hérault; Gard; Aude; Classement sanitaire des zones de production; Estimation de la qualité; Élevage et pêche de coquillages..
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00502/61320/64892.pdf
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Mortalités massives de l’Huître creuse: causes et perspectives ArchiMer
Pernet, Fabrice; Barret, Jean; Le Gall, Patrik; Lagarde, Franck; Fiandrino, Annie; Huvet, Arnaud; Corporeau, Charlotte; Boudry, Pierre; Quere, Claudie; Degremont, Lionel; Pepin, Jean-francois; Saulnier, Denis; Boulet, Hélène; Keck, Nicolas.
The objectives of this study are to increase our understanding of the mass mortality phenomena in Pacific oysters Crassostrea gigas in the Thau lagoon and to examine the effect of cultivation practises. Mortality events in 2009 and 2010 always coincide with simple or dual infections involving primarily the Herpes virus OsHV-I and secondarily the bacteria Vibrio splendidus, when seawater temperature is between 17°C and 24°C. In the Thau lagoon, mortality starts early May and last until fall with an interruption period when seawater temperature is higher than 24°C in July and August. Mortality of oysters varies as a function of zootechnical life-history, hydrodynamics and cultivation practises. First, mortality depends on whether or not oysters have been...
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Ano: 2011 URL: http://archimer.ifremer.fr/doc/00043/15404/12764.pdf
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Patterns in nutrient limitation and chlorophyll a along an anthropogenic eutrophication gradient in French Mediterranean coastal lagoons ArchiMer
Souchu, Philippe; Bec, Beatrice; Smith, Val H.; Laugier, Thierry; Fiandrino, Annie; Benau, Laurent; Orsoni, Valerie; Collos, Yves; Vaquer, Andre.
A cross-ecosystem comparison of data obtained from 20 French Mediterranean lagoons with contrasting eutrophication status provided the basis for investigating the variables that best predict chlorophyll a (Chl a) concentrations and nutrient limitation of phytoplankton biomass along a strong nutrient enrichment gradient. Summer concentrations of dissolved inorganic nitrogen (DIN) and phosphorus (DIP) comprised only a small fraction of total nitrogen (TN) and total phosphorus (TP). On the basis of inorganic nutrient concentrations, the most oligotrophic lagoons appeared to be phosphorus-limited, with a tendency towards the development of nitrogen limitation as eutrophication increased, as evidenced by decreasing DIN:DIP ratios. A weak but significantly...
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Ano: 2010 URL: http://archimer.ifremer.fr/doc/00003/11444/8002.pdf
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Phosphorus and nitrogen future in eutrophised mediterranean lagoons ArchiMer
Ouisse, Vincent; Fiandrino, Annie; Malet, Nathalie; Munaron, Dominique; Fortune, Martine; Oheix, Jocelyne; Baleux, Maeva; Lagarde, Franck; Le Noc, Sandrine; De Wit, Rutger.
Increased nitrogen and phosphorus inputs from watersheds, especially since the 1960s with the increased anthropogenic activities is recognized as a major cause of environmental degradation of coastal ecosystems. On the Mediterranean coast, lagoons are particularly affected by the eutrophication leading to significant changes in ecosystem structure, functioning and services. Since 2000, the “Région Languedoc-Roussillon”, the “Agence de l’Eau Rhône Mediterranée & Corse” and Ifremer developed a lagoon monitoring network (RSL) focusses upon eutrophication to assess and monitor status of 24 lagoons of Languedoc-Roussillon and Corsica. Many actions on watershed led to a significant reduction of nutrient inputs. However, the time required to restore these...
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Ano: 2012 URL: http://archimer.ifremer.fr/doc/00118/22899/20717.pdf
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Développement d’une méthode d’estimation des débits dans les graus de lagunes. Application sur la lagune de Bages-Sigean ArchiMer
Fiandrino, Annie; Lagarde, Franck; Le Gall, Patrik; Messiaen, Gregory; Chiantella, Claude; Roucher, Benoit; Meyer, Johann.
Les travaux présentés dans le présent rapport finalisent l’étude engagée dans le cadre de l’Axe 1 : « Amélioration des connaissances et compréhension des processus concernant le fonctionnement et le devenir du littoral méditerranéen » de la Convention Cadre entre l’Ifremer et l’Agence de l’Eau Rhône Méditerranée et Corse portant sur le « Développement de modèle hydrodynamiques et hydrosédimentaires sur les masses d’eau de transition ». Au terme de cette étude, nous disposons d’une méthode de jaugeage des débits en canal, opérationnelle dans la majorité des configurations de profils verticaux de courant rencontrées. Le chenal portuaire de Port-La-Nouvelle, unique voie de communication entre la lagune de Bages-Sigean et la Méditerranée, a été retenu comme...
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Ano: 2012 URL: http://archimer.ifremer.fr/doc/00060/17104/14620.pdf
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MODELLING REPORT. Coastal lagoon modelling : An integrated approach. Deliverables D12 – D13 – D14 ArchiMer
Chapelle, Annie; Bacher, Cedric; Duarte, P; Fiandrino, Annie; Galbiati, L; Marinov, D; Martinez, J; Norro, A; Pereira, A; Plus, Martin; Rodriguez, S; Tsirtsis, G; Zaldivar, Jm.
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Ano: 2005 URL: http://archimer.ifremer.fr/doc/00348/45930/45622.pdf
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Scenarios of fish waste deposition at the sub-lagoon scale: a modelling approach for aquaculture zoning and site selection ArchiMer
Chary, Killian; Callier, Myriam; Coves, Denis; Aubin, Joel; Simon, Julien; Fiandrino, Annie.
Spatial planning, including zoning and site-selection steps, is necessary to determine locations that minimize environmental impacts of aquaculture and respect ecosystem carrying capacities. This study aimed to analyse potential benthic waste deposition in a broad range of fish farming situations to facilitate zoning. To this end, we simulated waste dispersion for 54 aquaculture scenarios combining three red drum (Sciaenops ocellatus) farm types (Small, Medium, and Large) based on real farm characteristics and 36 sites with contrasting hydrodynamics in Mayotte’s North-East Lagoon. Key forcing variables and parameters of the particle-dispersion model for farms (layout and solid waste fluxes), species (feed- and faeces-settling velocities) and sites (depth...
Tipo: Text Palavras-chave: Aquaculture zones; Carrying-capacity; Environmental impact; Hydrodynamics; NewDEPOMOD; Particle dispersion; Red drum; Scenario analysis.
Ano: 2021 URL: https://archimer.ifremer.fr/doc/00666/77810/79985.pdf
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Directive Cadre Eau. Estimation du degré d’échange avec la mer pour les lagunes du bassin Rhône Méditerranée & Corse ArchiMer
Derolez, Valerie; Leurion, Axel; Fiandrino, Annie.
In the context of the update of the inventory of water bodies of the Rhone-Mediterranean and Corsican (RM & C) basin, an assessment of pressures and impacts on the lagoons is expected during the second water management plan (2010-2015) of the Water Framework Directive (WFD). Pressures due to pollutant inputs may have a varying impact on lagoons, according to their degree of interaction with the sea. The more exchanges with the sea will be high, the more export opportunities and dilution of pollutants will be high. The more exchanges will be limited, the more pollutants will accumulate in the lagoons, making then more vulnerable to inputs. The objective of this work is to propose, for the 28 lagoons (21 transition water bodies) of RM & C Basin, an...
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Ano: 2012 URL: http://archimer.ifremer.fr/doc/00094/20558/18231.pdf
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Integrated multi-trophic aquaculture of red drum (Sciaenops ocellatus) and sea cucumber (Holothuria scabra): Assessing bioremediation and life-cycle impacts ArchiMer
Chary, Killian; Aubin, Joël; Sadoul, Bastien; Fiandrino, Annie; Covès, Denis; Callier, Myriam.
Environmental sustainability of aquaculture is a complex issue involving effects at local (e.g. benthic deterioration), regional (e.g. eutrophication) and global (e.g. catches for feed production) scales as a consequence of farming operations (e.g. waste emissions) and industrial processes involved in the product value chain. Integrating these effects using a holistic and multi-scale framework is essential to assess the environmental sustainability of innovative production systems such as Integrated Multi-Trophic Aquaculture (IMTA), in which organisms of different trophic levels are co-cultured on the same farm to minimize aquaculture waste. The environmental performances of theoretical production scenarios of red drum (Sciaenops ocellatus) sea cage...
Tipo: Text Palavras-chave: Integrated multi-trophic aquaculture (IMTA); Life cycle assessment (LCA); Bioremediation; Culture scenario; Sea cucumber.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00588/70051/67990.pdf
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Changes in planktonic microbial components in interaction with juvenile oysters during a mortality episode in the Thau lagoon (France) ArchiMer
Richard, Marion; Bec, Beatrice; Vanhuysse, Charles; Mas, Sébastien; Parin, David; Chantalat, Camila; Le Gall, Patrik; Fiandrino, Annie; Lagarde, Franck; Mortreux, Serge; Ouisse, Vincent; Rolland, Jean-luc; Degut, Anaïs; Hatey, Elise; Fortune, Martine; Roque D'Orbcastel, Emmanuelle; Messiaen, Gregory; Munaron, Dominique; Callier, Myriam; Oheix, Jocelyne; Derolez, Valerie; Mostajir, Behzad.
Oysters modify the planktonic microbial community structure by their filtration and NH4 excretion activities. While many studies have been conducted on this subject with adult oysters, none had been carried out in situ with juveniles. Pacific oyster juveniles (Magallana gigas, previously Crassostrea gigas) died massively all over the world since 2008 in relation with OsHV-1 infection. During mortality episodes, sick and dead oysters are not separated from healthy live ones, and left to decay in the surrounding environment, with unknown consequences for the nutrient cycle and planktonic microbial components (PMC). The present study aimed to elucidate for the first time the interactions between oyster juveniles and PMC during a mortality episode. Innovative...
Tipo: Text Palavras-chave: Magallana gigas; Crassostrea gigas; Spat; OsHV-1 mu Var; Mortality; Picoplankton; Heterotrophic flagellates; Ciliates; Uronema; Balanion.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00474/58559/61115.pdf
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Predicted environmental concentrations of carbamazepine, oxcarbazepine and their main metabolites in a coastal system ArchiMer
Fenet, Helene; Arpin-pont, Lauren; Vanhoutte Brunier, Alice; Munaron, Dominique; Fiandrino, Annie; Hilaire-buys, Dominique; Mathieu, Olivier; Budzinski, Helene; Chiron, Serge; Boillot, Clotilde; Gomez, Elena.
Pharmaceuticals are widely released in aquatic environment through treated wastewaters. They reach coastal zone indirectly via streams or directly though marine outfalls however data concerning this contamination in coastal waters are scarce. Environmental Risk Assessment (ERA) of pharmaceuticals have been conducted mostly in surface waters and has not been performed in coastal zone. The first step of ERA is to evaluate the exposure through predictive environmental concentration (PEC) values. The aim of this study was to predict the occurrence of some pharmaceuticals in a coastal aera subjected to treated wastewater (TWW) reject through a marine outfall (Fig 2.). Among pharmaceuticals, Carbamazepine, Oxcarbazepine and their main metabolites (Fig 1.) were...
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Ano: 2012 URL: http://archimer.ifremer.fr/doc/00118/22944/24921.pdf
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Evaluation de la qualité des zones de production conchylicole. Région Occitanie. Edition 2020 ArchiMer
Serais, Ophelie; Gianaroli, Camille; Cimiterra, Nicolas; Munaron, Dominique; Fiandrino, Annie; Piquet, Jean-come; Rocq, Sophie; Grouhel-pellouin, Anne.
Après un rappel des objectifs, du fonctionnement et de la méthode d’interprétation des résultats du réseau de contrôle microbiologique (REMI) et du réseau de surveillance chimique (ROCCH), ce rapport comprend un bilan national et décrit le programme annuel 2019 de la région Occitanie. Il présente l’ensemble des résultats obtenus, en particulier l’estimation de la qualité microbiologique et chimique des zones classées de production de coquillages. Jusqu’en mars 2019, 28 zones de production été suivies par le REMI en Occitanie dont 12 dans l’Aude, 14 dans l’Hérault et 1 dans le Gard1 et 1 interdépartementale Hérault-Gard. Suite à la révision de la stratégie REMI en mars 2019, le suivi a été arrêté sur 5 d’entre elles (2 dans l’Aude, 2 dans l’Hérault et la...
Tipo: Text Palavras-chave: REMI; E. Coli; Contamination bactériologique des coquillages; ROCCH; Contaminants chimiques; Milieu marin; Occitanie; Hérault; Gard; Aude; 2019; Évènement pluviométrique; Classement sanitaire des zones de production; Estimation de la qualité; Élevage et pêche de coquillages..
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00631/74282/73892.pdf
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Recherche de gisements de captage naturel de Crassostrea gigas en lagune de Thau.Répartition spatiotemporelle du naissain, aspects culturaux et économiques. ArchiMer
Lagarde, Franck; Perignon, Adeline; Gervasoni, Erika; Mortreux, Serge; Meddah, Slem; Leurion, Axel; Le Gall, Patrik; Guillou, Jean-louis; Boj, Marie; Fuhrmann, Marine; Richard, Marion; Ubertini, Martin; Fiandrino, Annie; Roque D'Orbcastel, Emmanuelle; Pouvreau, Stephane.
Le travail est axé sur la volonté de la filière conchylicole méditerranéenne pour s'approvisionner en naissains d'huîtres creuses sauvages d’origine lagunaire. L'observatoire du captage naturel, mis en place entre 2012 et 2014, a permis de découvrir des gisements de naissains collectés naturellement dans la lagune de Thau selon un protocole défini à l’échelle expérimentale. Bien que très hétérogènes spatialement et temporellement, les densités de naissains sur les collecteurs révèlent des catégories de captage allant de "moyen i. e. 20 à 200 naissains par coupelle" à "excellent i. e. 200 à 2000 naissains par coupelle " sur certaines stations expérimentales. Les expériences de captage naturel à échelle semi-industrielle (avec filière de coupelles en lagune)...
Tipo: Text Palavras-chave: Captage naturel; Crassostrea gigas; Recrutement; Conchyliculture méditerranéenne; Lagune..
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00260/37103/35632.pdf
Registros recuperados: 71
Primeira ... 1234 ... Última
 

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