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| Registros recuperados: 161 | |
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| Le Traon, Pierre-yves; D'Ortenzio, Fabrizio; Babin, Marcel; Leymarie, Edouard; Marec, Claudie; Pouliquen, Sylvie; Thierry, Virginie; Cabanes, Cecile; Claustre, Hervé; Desbruyeres, Damien; Lacour, Leo; Lagunas, Jose-luis; Maze, Guillaume; Mercier, Herle; Penkerc'H, Christophe; Poffa, Noe; Poteau, Antoine; Prieur, Louis; Racape, Virginie; Randelhoff, Achim; Rehm, Eric; Schmechtig, Catherine Marie; Taillandier, Vincent; Wagener, Thibaut; Xing, Xiaogang. |
| Argo, the international array of profiling floats, is a major component of the global ocean and climate observing system. In 2010, the NAOS (Novel Argo Observing System) project was selected as part of the French “Investissements d’Avenir” Equipex program. The objectives of NAOS were to consolidate the French contribution to Argo’s core mission (global temperature and salinity measurements down to 2000 m), and also to develop the future generation of French Argo profiling floats and prepare the next phase of the Argo program with an extension to the deep ocean (Deep Argo), biogeochemistry (BGC-Argo) and polar seas. This paper summarizes how NAOS has met its objectives. The project significantly boosted France’s contribution to Argo’s core mission by... |
| Tipo: Text |
Palavras-chave: Profiling floats; Deep ocean; Biogeochemistry; Mediterranean Sea; Arctic; Atlantic; Argo. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00654/76584/77729.pdf |
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| Albo-puigserver, Marta; Navarro, Joan; Coll, Marta; Aguzzi, Jacopo; Cardona, Luis; Saez-liante, Raquel. |
| Understanding how marine predators interact is a scientific challenge. In marine ecosystems, segregation in feeding habits has been largely described as a common mechanism to allow the coexistence of several competing marine predators. However, little is known about the feeding ecology of most species of chondrichthyans, which play a pivotal role in the structure of marine food webs worldwide. In this study, we examined the trophic ecology of 3 relatively abundant chondrichthyans coexisting in the Mediterranean Sea: the blackmouth catshark Galeus melastomus, the velvet belly lanternshark Etmopterus spinax and the rabbit fish Chimaera monstrosa. To examine their trophic ecology and interspecific differences in food habits, we combined the analysis of... |
| Tipo: Text |
Palavras-chave: Feeding niche; Isotope analysis; Mediterranean Sea; Galeus melastomus; Etmopterus spinax; Chimaera monstrosa. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00266/37721/73392.pdf |
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| Giakoumi, Sylvaine; Guilhaumon, Francois; Kark, Salit; Terlizzi, Antonio; Claudet, Joachim; Felline, Serena; Cerrano, Carlo; Coll, Marta; Danovaro, Roberto; Fraschetti, Simonetta; Koutsoubas, Drosos; Ledoux, Jean-batiste; Mazor, Tessa; Merigot, Bastien; Micheli, Fiorenza; Katsanevakis, Stelios. |
| AimBiological invasions are major contributors to global change and native biodiversity decline. However, they are overlooked in marine conservation plans. Here, we examine for the first time the extent to which marine conservation planning research has addressed (or ignored) biological invasions. Furthermore, we explore the change of spatial priorities in conservation plans when different approaches are used to incorporate the presence and impacts of invasive species. LocationGlobal analysis with a focus on the Mediterranean Sea region. MethodsWe conducted a systematic literature review consisting of three steps: (1) article selection using a search engine, (2) abstract screening and (3) review of pertinent articles, which were identified in the second... |
| Tipo: Text |
Palavras-chave: Alien species; Biological invasions; Conservation planning; Impacts; Management actions; Marine biogeographic regions; Marine protected areas; Mediterranean Sea. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00359/47001/74196.pdf |
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| Galgani, Francois; Deidun, Alan; Liubartseva, Svitlana; Gauci, Adam; Doronzo, Bartholomeo; Brandini, Carlo; Gerigny, Olivia. |
| As part of the AMARE project, the main purpose of this report is to provide advice and practical guidance, for establishing programmes to monitor and assess the distribution and abundance of marine litter in MPAs. The present document build on relevant existing monitoring and assessment practices in the Mediterranean, such as the existing monitoring practices in UNEP/MAP and within the Marine Strategy Framework Directive. The proposed strategy (defining the sampling scheme, the environmental compartment to monitor and the protocols to be used) is also based on recommendations of the UN GESAMP report on monitoring marine litter (GESAMP, 2019). In addition, it is based on the experience of ongoing monitoring and assessment activities under various scientific... |
| Tipo: Text |
Palavras-chave: Marine Litter; Mediterranean Sea; Marine protected areas; Monitoring. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00487/59840/62987.pdf |
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| Antoine, David; Vellucci, Vincenzo; Banks, Andrew C.; Bardey, Philippe; Bretagnon, Marine; Bruniquel, Véronique; Deru, Alexis; Hembise Fanton D’andon, Odile; Lerebourg, Christophe; Mangin, Antoine; Crozel, Didier; Victori, Stéphane; Kalampokis, Alkiviadis; Karageorgis, Aristomenis P.; Petihakis, George; Psarra, Stella; Golbol, Melek; Leymarie, Edouard; Bialek, Agnieszka; Fox, Nigel; Hunt, Samuel; Kuusk, Joel; Laizans, Kaspars; Kanakidou, Maria. |
| The European Copernicus programme ensures long-term delivery of high-quality, global satellite ocean colour radiometry (OCR) observations from its Sentinel-3 (S3) satellite series carrying the ocean and land colour instrument (OLCI). In particular, the S3/OLCI provides marine water leaving reflectance and derived products to the Copernicus marine environment monitoring service, CMEMS, for which data quality is of paramount importance. This is why OCR system vicarious calibration (OC-SVC), which allows uncertainties of these products to stay within required specifications, is crucial. The European organisation for the exploitation of meteorological satellites (EUMETSAT) operates the S3/OLCI marine ground segment, and envisions having an SVC infrastructure... |
| Tipo: Text |
Palavras-chave: Satellite ocean colour; System vicarious calibration; Fiducial reference measurements; Radiometry; SI-traceability; Uncertainty budget; Mediterranean Sea; BOUSSOLE; MSEA. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00629/74136/73601.pdf |
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| Ridame, C; Moutin, T; Guieu, C. |
| A Saharan soil, considered as a proxy for Saharan aerosols, was used to perform radio-labelled phosphate adsorption experiments using (33)PO(4)(3-): leached particles were exposed to poisoned western Mediterranean seawater for varying lengths of time. The measured adsorption capacity of Saharan dust for phosphate was 0.13 mumol g(-1). Considering this value and an annual Saharan dust deposition of 12.5 t km(-2) year(-1), we show that Saharan particles do not represent a significant sink for seawater phosphate in the western Mediterranean Sea. This result is in agreement with that determined from a similar approach conducted in the eastern basin. As a consequence, the unusual NIP ratio measured in the whole Mediterranean Sea (up to 29) cannot be explained... |
| Tipo: Text |
Palavras-chave: Poussières sahariennes; Adsorption; Phosphate; Rapport N/P; Méditerranée; Saharan dust; Adsorption; Phosphate; N/P ratio; Mediterranean Sea. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00321/43254/42985.pdf |
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| Lassus, Patrick; Amzil, Zouher; Baron, Regis; Sechet, Veronique; Barille, Laurent; Abadie, Eric; Bardouil, Michele; Sibat, Manoella; Truquet, Philippe; Berard, Jean-baptiste; Gueguen, Marielle. |
| In October and November 2003 a bloom of the toxic dinoflagellate Alexandrium catenella was observed in the North-east zone of Thau lagoon (French Mediterranean coast). Sea water samples were collected every hours to evaluate time-related variations of phytoplankton concentrations and to compare the relative ratio of A. catenella versus other phytoplankton species during the outbreak. From these observations, trials using recirculated sea water systems were performed to: i) evaluate the physiological effects on oyster of increasing proportions of A. catenella within a mixed microalgal diet where the non-toxic diatom Thalassiosira weissflogii was present at concentration: 1500 cells ml(-1), ii) compare the effect of two temperatures (12 degrees C and 18... |
| Tipo: Text |
Palavras-chave: Mediterranean Sea; Alexandrium catenella; Toxin content; Model; Crassostrea gigas; Paralytic shellfish poisoning. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2624.pdf |
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| Leymarie, Edouard; Penkerc'H, Christophe; Vellucci, Vincenzo; Lerebourg, Christophe; Antoine, David; Boss, Emmanuel; Lewis, Marion R.; D'Ortenzio, Fabrizio; Claustre, Herve. |
| An efficient system to produce in situ high quality radiometric measurements is compulsory to rigorously perform the vicarious calibration of satellite sensors dedicated to Ocean Color Radiometry (OCR) and to validate their derived products. This requirement is especially needed during the early stages of an OCR satellite activity or for remote areas poorly covered by oceanographic cruises with possible bio-optical anomalies. Taking advantage of Argo's profiling float technology, we present a new autonomous profiling float dedicated to in situ radiometric measurements. The float is based on the Provor CTS5 (manufacturer NKE) with an added novel two protruding arm design allowing for sensor redundancies, shading mitigation and near-surface data. Equipped... |
| Tipo: Text |
Palavras-chave: Autonomous profiling floats; Remote sensing reflectance; Ocean color; Validation; System vicarious calibration; Austral ocean; Mediterranean Sea; Radiometric measurement. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00585/69694/67579.pdf |
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| Somot, Samuel; Houpert, Loic; Sevault, Florence; Testor, Pierre; Bosse, Anthony; Taupier-letage, Isabelle; Bouin, Marie-noelle; Waldman, Robin; Cassou, Christophe; Sanchez-gomez, Emilia; Durrieu De Madron, Xavier; Adloff, Fanny; Nabat, Pierre; Herrmann, Marine. |
| Observing, modelling and understanding the climate-scale variability of the deep water formation (DWF) in the North-Western Mediterranean Sea remains today very challenging. In this study, we first characterize the interannual variability of this phenomenon by a thorough reanalysis of observations in order to establish reference time series. These quantitative indicators include 31 observed years for the yearly maximum mixed layer depth over the period 1980–2013 and a detailed multi-indicator description of the period 2007–2013. Then a 1980–2013 hindcast simulation is performed with a fully-coupled regional climate system model including the high-resolution representation of the regional atmosphere, ocean, land-surface and rivers. The simulation reproduces... |
| Tipo: Text |
Palavras-chave: Deep water formation; Open-sea deep convection; Interannual variability; Mediterranean Sea; Regional climate models; Climate trends. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00348/45948/45654.pdf |
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| Giannoulaki, Marianna; Pyrounaki, Maria M.; Liorzou, Bernard; Leonori, Iole; Valavanis, Vasilis D.; Tsagarakis, Konstantinos; Bigot, Jean-louis; Roos, David; De Felice, Andrea; Campanella, Fabio; Somarakis, Stylianos; Arneri, Enrico; Machias, Athanassios. |
| Identification of potential juvenile grounds of short-lived species such as European sardine (Sardina pilchardus) in relation to the environment is a crucial issue for effective management. In the current work, habitat suitability modelling was applied to acoustic data derived from both the western and eastern part of the Mediterranean Sea. Early summer acoustic data of sardine juveniles were modelled using generalized additive models along with satellite environmental and bathymetry data. Selected models were used to construct maps that exhibit the probability of presence in the study areas, as well as throughout the entire Mediterranean basin, as a measure of habitat adequacy. Areas with high probability of supporting sardine juvenile presence... |
| Tipo: Text |
Palavras-chave: Generalized additive models; Habitat suitability modelling; Mediterranean Sea; Potential juvenile habitat; Sardine juveniles; Small pelagic fish. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00043/15390/12822.pdf |
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| Plounevez, Serge; Champalbert, Gisèle. |
| Feeding behaviour of adult European anchovy (Engraulis encrasicolus) was studied in the Gulf of Lions (northwestern Mediterranean Sea) in relation to major abiotic and biotic factors. Observations were made during the main spawning period (summer) for two years, data were collected through hydrological pro-tiling, zooplankton hauls and fish trawling performed in areas of high anchovy density. Temperature, salinity and zooplankton biomass were stratified in the study areas, with cladocerans numerous above the thermocline whereas copepods were dominant below. Engraulis encrasicolus was strictly zooplanctivorous during the main spawning season with copepod and crustacean larvae dominating in stomach contents. Anchovy exhibited high trophic activity during the... |
| Tipo: Text |
Palavras-chave: Anchois; Alimentation; Zooplancton; Reproduction; Méditerranée; Anchovy; Feeding; Zooplankton; Spawning; Mediterranean Sea. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00301/41263/40455.pdf |
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| Rzeznik-orignac, Jadwiga; Puisay, Antoine; Derelle, Evelyne; Peru, Erwan; Le Bris, Nadine; Galand, Pierre E.. |
| In submarine canyon sediments, bacteria and nematodes dominate the benthic biomass and play a key role in nutrient cycling and energy transfer. The diversity of these communities remains, however, poorly studied. This work aims at describing the composition of bacteria and nematode communities in the Lacaze-Duthiers submarine canyon in the north-western Mediterranean Sea. We targeted three sediment depths for two consecutive years and investigated the communities using nuclear markers (18S rRNA and 16S rRNA genes). High throughput sequencing combined to maximal information coefficient (MIC) statistical analysis allowed us to identify, for the first time, at the same small scale, the community structures and the co-occurrence of nematodes and bacteria... |
| Tipo: Text |
Palavras-chave: Bacteria; Meiofauna; Canyon Lacaze-Duthiers; Metabarcording; Molecular approach; Mediterranean Sea; Nematodes; Marine biodiversity; 18S; 16S. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56586/76447.pdf |
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| Registros recuperados: 161 | |
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