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ArchiMer, Institutional Archive of Ifremer (French Research Institute for Exploitation of the Sea) (9,208 recursos)
Archimer, is the institutional repository of Ifremer (French Research Institute for Exploitation of the Sea). It provides freely available scientific or technical documents online (publications, theses, conference proceedings, etc) in all fields related to oceans (oceanography, aquaculture, fisheries, etc). The site is available in French and English.


Mostrando recursos 1 - 20 de 123

1. EquiMar. Deliverable D2.2. Wave and tidal resource characterisation - Venugopal, Vengatesan; Davey, Thomas; Smith, Helen; Smith, George; Holmes, Brian; Barrett, Sean; Prevosto, Marc; Maisondieu, Christophe; Cavalieri, Luigi; Bertotti, Luciana; Lawrence, John; Girard, Francoise
This report gives guidance relevant to the resource assessment of sites considered for the deployment of wave and tidal energy converters. Areas considered include: instrumentation and measurement; techniques and requirements for wave and tidal parameterisation; wave-current interaction; spatial and temporal variation. A number of case studies are also included examining several European sites.

2. Geomorphological classification in Bay of Biscay. Morpho-sedimentary mapping of the seabed in selected areas - De Chambure, Laurent; Bourillet, Jean-francois; Bartel, Claire
Les coraux d’eau froide, contrairement aux coraux tropicaux, n’ont pas besoin de lumière et peuvent se développer en profondeur. Les espèces constructrices comme Lophelia pertusa et Madrepora occulata ont une distribution mondiale et sont présentes de la Norvège à la Grèce sous forme de monts carbonatés ou de récifs. Menacés par l’évolution des conditions environnementales et les actions anthropiques, les coraux d’eau froide sont actuellement classés comme écosystème vulnérable par plusieurs institutions internationales. Dans les eaux européennes, les indicateurs pour mesurer l’impact des pêcheries et l’efficacité des mesures de protection manquent encore. Le projet européen CoralFish vise à étudier l’interaction...

3. Genetic structure of the reef grouper Epinephelus merra in the West Indian Ocean appears congruent with biogeographic and oceanographic boundaries - Muths, Delphine; Tessier, Emmanuel; Bourjea, Jerome
The reef fauna connectivity of the West Indian Ocean (WIO) is one of the least studied globally. Here we use genetic analyses of the grouper Epinephelus merra (Bloch 1793) to determine patterns of connectivity and to identify barriers to dispersal in this WIO marine area. Phylogeographic and population-level analyses were conducted on cytochrome b sequences and microsatellites (13 loci) from 557 individuals sampled in 15 localities distributed across the West Indian Ocean. Additional samples from the Pacific Ocean were used to benchmark the WIO population structure. The high level of divergence revealed between Indian and Pacific localities (of about 4.5%...

4. Introduction to the BASIN Special Issue: State of art, past present a view to the future - St John, M.a.; Barange, Manuel; Benway, Heather; Flynn, Kevin J.; Holt, Jason; Merino, Gorka; Martin, A.; Mitra, Aditee; Melle, Webjorn; Sanders, R.; Trenkel, Verena; Grigorov, I.; Hoffman, E.

5. Eruption of a deep-sea mud volcano triggers rapid sediment movement - Feseker, Tomas; Boetius, Antje; Wenzhofer, Frank; Blandin, Jerome; Olu, Karine; Yoerger, Dana R.; Camilli, Richard; German, Christopher R.; De Beer, Dirk
Submarine mud volcanoes are important sources of methane to the water column. However, the temporal variability of their mud and methane emissions is unknown. Methane emissions were previously proposed to result from a dynamic equilibrium between upward migration and consumption at the seabed by methane-consuming microbes. Here we show non-steady-state situations of vigorous mud movement that are revealed through variations in fluid flow, seabed temperature and seafloor bathymetry. Time series data for pressure, temperature, pH and seafloor photography were collected over 431 days using a benthic observatory at the active Hakon Mosby Mud Volcano. We documented 25 pulses of hot...

6. Coriolis data centre. Annual report 2014 - Carval, Thierry; Bernard, Vincent; Bonnat, Armel; Coatanoan, Christine; Detoc, Jerome; Gatti, Julie; Maronny, Jean-paul; Petit De La Villeon, Loic

7. Scallop larval survival from erythromycin treated broodstock after conditioning without sediment - Holbach, Marine; Robert, Rene; Boudry, Pierre; Petton, Bruno; Archambault, Philippe; Tremblay, Rejean
Pathogenic bacteria are known to be one of the main factors affecting Pecten maximus larval survival in hatcheries. As a result, juvenile production often relies on the use of antibiotics during larval culture. However, limitations of the usage of chemicals such as chloramphenicol in aquaculture have been reinforced due to their negative environmental impact and alternatives are accordingly needed. Thus, the importance of bacterial transfer from oocytes to larvae has been studied here as well as procedures to limit larval mortality in P. maximus. In order to reduce bacterial contamination during larval development, we focused on two periods, broodstock conditioning...

8. Assessment of oocyte and trochophore quality in Pacific oyster, Crassostrea gigas - Boulais, Myrina; Corporeau, Charlotte; Huvet, Arnaud; Bernard, Ismael; Quere, Claudie; Quillien, Virgile; Fabioux, Caroline; Suquet, Marc
Pacific oyster hatchery production remains highly variable, partially due to inconsistent gamete quality. However, little attention has been paid to oocyte quality in Pacific oyster compared to important vertebrate aquaculture species such as fishes. The aims of the present study were to identify criteria of oocyte and trochophore quality used as predictive tools for embryo developmental success at the D-larval stage. Twenty-six potential proxies of oocyte and trochophore quality were studied on 25 mature females, as determined using histology. Some morphological and biochemical characteristics of mature oocytes were described. Protein appeared to be the main constituent of fully mature Pacific...

9. Study of high frequency measurements from the MesuRho mooring - Fuchs, Rosalie; Pairaud, Ivane
The high frequency MesuRho station, part of the MAREL network and located at the mouth of the Rhone River is presented. Measures sometimes show bias signs, drift or double, so that a graphical interface was implemented to quickly visualize data and eventually correct them. Original data set and corrected data for 2009-2013 are presented, the methods of corrections provided are detailed. Finally an example of a storm event study (under strong south east wind) between the 4th and the 7th of March 2013 is presented and some prospects to improve data management are proposed.

10. Documentation de l'interface MBI (Matlab Buoy Interface). Interface Matlab pour gestion des données issues de bouées in situ haute fréquence. Application à la bouée MAREL MesuRho - Fuchs, Rosalie; Pairaud, Ivane
In order to facilitate the visualization and exploitation of data from buoys MAREL network, a graphical interface named MBI (Matlab Buoy Interface) was developed with the Matlab software. The interface allows to quickly view the high-frequency data, view and edit the associated quality codes and provides analysis tools such as linear regression, various filters, Fourier series and principal components analysis. Correction methods for skewed data, drift phenomena and duplicates are also available. This document describes the features of the MBI, its use and provides the main technical interface details.

11. Operational evaluation of the Mediterranean Monitoring and Forecasting Centre products: Implementation and Results - Tonani, Marina; Nilsson, J.a.u; Lyubartsev, Vladyslav; Grandi, Alessandro; Aydogdu, A.; Azzopardi, Joel; Bolzon, G.; Bruschi, A.; Drago, Aldo; Garau, T.; Gatti, Julie; Gertman, Isaac; Goldman, R.; Hayes, Dan; Korres, Gerrakimos; Lorente, P.; Malacic, Vlado; Mantziafou, Anneta; Nardone, G.; Olita, Antonio; Ozsoy, E.; Pairaud, Ivane; Pensieri, S.; Perivoliotis, L.; Petelin, Boris; Ravaioli, M.; Renault, L.; Sofianos, S.; Sotillo, M.g.; Teruzzi, A.; Zodiatis, George
A web-based validation platform has been developed at the Istituto Nazionale di Geofisica e Vulcanologia (INGV) for the Near Real Time validation of the MyOcean-Mediterranean Monitoring and Forecasting Centre products (Med-MFC). A network for the collection of the in-situ observations, the nested sub-basin forecasting systems model data (provided by the partners of the Mediterranean Operational Oceanography Network, MOON) and the Sea Surface Temperature (SST) satellite data has been developed and is updated every day with the new available data. The network collects temperature, salinity, currents and sea level data. The validation of the biogeochemical forecast products is done by use...

12. Mechanisms of change in human behaviour - Marchal, Paul; Bartelings, Heleen; Bastardie, François; Batsleer, Jurgen; Delaney, Alyne; Girardin, Raphael; Gloaguen, Pierre; Hamon, Katell; Hoefnagel, Ellen; Jouanneau, Charlène; Mahevas, Stephanie; Nielsen, Rasmus; Piwowarczyk, Joanna; Poos, Jan-jaap; Schulze, Torsten; Rivot, Etienne; Simons, Sarah; Tidd, Alex; Vermard, Youen; Woillez, Mathieu
The scope of this report is to present the science developed within the VECTORS project to improve the understanding of the key processes driving the behaviour of human agents utilising a variety of EU maritime domains. While particular attention has been paid to the spatial interactions between fishing activities and other human uses (e.g., maritime traffic, offshore wind parks, aggregate extractions), the behaviour of non-fishing sectors of activity has also been considered. Various quantitative and semi-qualitative approaches have been pursued to gain better insight into behavioural drivers based on past data, and also forecast how human agents would react if...

13. Trophic level-based indicators to track fishing impacts across marine ecosystems - Shannon, Lynne; Coll, Marta; Bundy, Alida; Gascuel, Didier; Heymans, Johanna J;; Kleisner, Kristin; Lynam, Christopher; Piroddi, Chiara; Tam, Jorge; Travers-trolet, Morgane; Shin, Yunne
Trophic level (TL)-based indicators have been widely used to examine fishing impacts in aquatic ecosystems and the induced biodiversity changes. However, much debate has ensued regarding discrepancies and challenges arising from the use of landings data from commercial fisheries to calculate TL indicators. Subsequent studies have started to examine survey-based and model-based indicators. In this paper, we undertake an extensive evaluation of a variety of TL indicators across 9 well-studied marine ecosystems by making use of model- as well as surveyand catch-based TL indicators. Using detailed regional information and data on fishing history, fishing intensity, and environmental conditions, we evaluate...

14. Springtime zooplankton size structure over the continental shelf of the Bay of Biscay - Vandromme, Pierre; Nogueira, Enrique; Huret, Martin; Lopez-urrutia, Angel; Gonzalez-nuevo Gonzalez, G.; Sourisseau, Marc; Petitgas, Pierre
Linking lower and higher trophic levels requires special focus on the essential role played by mid-trophic levels, i.e., the zooplankton. One of the most relevant pieces of information regarding zooplankton in terms of flux of energy lies in its size structure. In this study, an extensive data set of size measurements is presented, covering parts of the western European continental shelf and slope, from the Galician coast to the Ushant front, during the springs from 2005 to 2012. Zooplankton size spectra were estimated using measurements carried out in situ with the Laser Optical Plankton Counter (LOPC) and with an image...

15. Argo data management report 2014. Coriolis DAC & GDAC - Carval, Thierry; Coatanoan, Christine; Cabanes, Cecile
This report covers the activity of Coriolis data centre for a one year period from October 1st 2013 to September 30th 2014.

16. Development and validation of the new ProvBioII float - Leymarie, Edouard; Poteau, Antoine; Andre, Xavier; Besson, F; Brault, Patrice; Claustre, Herve; David, Arnaud; D'Ortenzio, Fabrizio; Dufour, A; Lavigne, Heloise; Le Reste, Serge; Le Traon, Pierre-yves; Migon, Christophe; Nogre, David; Obolensky, G; Penkerc'H, C; Sagot, Jerome; Schaeffer, Christophe; Schmechtig, C; Taillandier, V
In the last ten years, a productive collaboration has grown between the Laboratoire d’Océanographie de Villefranche (LOV), NKE and IFREMER to implement biogeochemical sensors on profiling floats. A first project (2003) was dedicated to the design of the so-called ProvBio floats (models A and B) that consisted of a PROVOR-CTS3 float instrumented with three new optical sensors: a Wetlabs transmissometer (C-Rover), a 3-wavelength Satlantic radiometer (OCR-503) and an “ECO3” Wetlabs sensor, measuring chlorophyll-a fluorescence, colored dissolved organic matter and particle backscattering coefficients (see First Success of ProvBio floats, Coriolis Letter n°5). Then, the integration of biogeochemical sensors continued in the...

17. JERICO. Report after JERICO Meeting in Brussels 26-27 feb. 2014 - Puillat, Ingrid; Petihakis, Georges; Sparnocchia, Stefania; Farcy, Patrick; Morin, Pascal
The objective of the workshop was to address main issues of JERICO project: - TNA: overview and formal approval of the selected proposals after the 3rd call - The JERICO Label document: content and issues - The JERICO strategy for the future. The document reports hereafter the synthesis of the discussions

18. JERICO. Report after 1st General Assembly and JERICO Best Practices Workshop - Oct. 2012 - Farcy, Patrick; Puillat, Ingrid; Petihakis, Georges
The First JERICO General Assembly was organised in Heraklion on 1st & 2nd Oct. 2012. The coordinators took the opportunity of this important meeting, where most of partners were present, to organise other specific workshops and meetings plus individual WP meetings. Indeed, partners met in an informal way in short parallel WP meetings on Monday morning to prepare for the General Assembly discussions and to coordinate WP activities. In the afternoon of 1st Oct., a dedicated meeting officially gathered the TNA (Trans National Access) selection panel to debrief and conclude after the first TNA call and selection process. Up until the...

19. JERICO. WP10 Workshop Report - Nolan, Glenn; Puillat, Ingrid; Farcy, Patrick
A workshop was held on October 16th to 18th 2013 at the Villefranche observatory to outline progress on emerging technologies within the JERICO FP7 project (Work-package 10). A particular focus of the workshop was to invite researchers outside the project consortium to: • Learn of technology developments within JERICO and • Present results of their own experiments and technology development The workshop was a mixture of invited talks and practical demonstrations of some of the technologies involved. There were a total of 24 invited talks and 2 additional practical demonstrations. The talks focused on 5 key tasks within the emerging technologies area: 10.1 Biological compartments 10.2 Contaminants 10.3 Profiling technologies 10.4 Ships/vessels of...

20. JERICO. ILC Evaluation report Conductivity/Salinity Temperature/Dissolved Oxygen. Annex to Deliverable D #1.6 - Salvetat, Florence
Complemental to the first FCT workshop, the metrology laboratory of Ifremer Centre de Bretagne carried out a calibration experiment from the 8th to the 12th of October 2012. This experiment was promoted by the Jerico European project (JOINT EUROPEAN RESEARCH INFRASTRUCTURE NETWORK FOR COASTAL OBSERVATORIES), in the framework of a collaborative work proposed by the workpackage 4, “Maintenance and Calibration”, and the “Forum for Coastal Technologies”. The purpose of this experiment was to compare the calibration methods used by different institutes or firms within an inter-laboratory comparison (ILC). In terms of metrology, this comparison will allow the laboratories to assess their...

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