A5067702901- Microbial Community Ecology and Physiology
- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Marine and coastal ecosystems
- Methane Hydrates and Related Phenomena
- Marine Biology and Ecology Research
- Dark Matter and Cosmic Phenomena
- Protist diversity and phylogeny
- Radio Astronomy Observations and Technology
- Ocean Acidification Effects and Responses
- Gamma-ray bursts and supernovae
- Genomics and Phylogenetic Studies
- bioluminescence and chemiluminescence research
- Oceanographic and Atmospheric Processes
- Isotope Analysis in Ecology
- Particle physics theoretical and experimental studies
- Calcium Carbonate Crystallization and Inhibition
- Underwater Acoustics Research
- Microbial Inactivation Methods
- Oil Spill Detection and Mitigation
- Environmental DNA in Biodiversity Studies
- Tropical and Extratropical Cyclones Research
- Marine Bivalve and Aquaculture Studies
- Diatoms and Algae Research
- Advanced Computational Techniques and Applications
Centre National de la Recherche Scientifique
2014-2023
Institut Méditerranéen d’Océanologie
2012-2023
Institut de Recherche pour le Développement
2014-2023
Université de Toulon
2013-2023
Aix-Marseille Université
2013-2023
GEOMAR Helmholtz Centre for Ocean Research Kiel
2020
Centre de Gestion Scientifique
2007-2016
Université Paris-Sud
2013
Universitat Politècnica de València
2010-2012
Centre d’Immunologie de Marseille-Luminy
2003-2011
Deep hypersaline anoxic basins in the Mediterranean Sea are a legacy of dissolution ancient subterranean salt deposits from Miocene period. Our study revealed that these not biogeochemical dead ends, but support situ sulfate reduction, methanogenesis, and heterotrophic activity. A wide diversity prokaryotes was observed, including new, abundant, deeply branching order within Euryarchaeota . Furthermore, we demonstrated presence unique, metabolically active microbial community Discovery...
Increasing interest in the acquisition of biotic and abiotic resources from within deep sea (e.g. fisheries, oil-gas extraction, mining) urgently imposes development novel monitoring technologies, beyond traditional vessel-assisted, time-consuming, high-cost sampling surveys. The implementation permanent networks seabed water-column cabled (fixed) docked mobile platforms is presently enforced, to cooperatively measure biological features environmental (physico-chemical) parameters. Video...
Plastic garbage patches at the ocean surface are symptomatic of a wider pollution affecting whole marine environment. Sinking plastic debris increasingly appears to be an important process in global fate ocean. However, there is insufficient knowledge about processes distributions and degradation how this influences release additives under varying environmental conditions, especially deep-sea environments. Here we show that abiotic conditions increasing hydrostatic pressure inhibits leaching...
The pelagic realm of the dark ocean is characterized by high hydrostatic pressure, low temperature, high-inorganic nutrients and organic carbon concentrations. Measurements metabolic activities bathypelagic bacteria are often underestimated due to technological limitations in recovering samples maintaining them under situ environmental conditions. Moreover, most pressure-retaining samplers, developed a number different labs, able maintain seawater at pressure during recovery have remained...
Increasing exploration and industrial exploitation of the vast fragile deep-ocean environment for a wide range resources (e.g., oil, gas, fisheries, new molecules, soon, minerals) raises global concerns about potential ecological impacts. BathyBot is multi-instrumented deep-sea crawler deployed from dock, at 2500m depth, 40 km off French coast (Mediterranean Sea), EMSO-LO station. connected to deep sea cabled observatory allowing real-time observations sea. The deployment this benthic...
Abstract The Gulf of Lions in the northwestern Mediterranean is one few sites around world ocean exhibiting deep open‐ocean convection. Based on 6 year long (2009–2015) time series from a mooring convection region, shipborne measurements repeated cruises, 2012 to 2015, and glider measurements, we report evidence bottom thick nepheloid layer formation, which coincident with sediment resuspension induced by bottom‐reaching events. This layer, presents maximum thickness more than 2000 m center...
The deep ocean is the largest and least known ecosystem on Earth. It hosts numerous pelagic organisms, most of which are able to emit light. Here we present a unique data set consisting 2.5-year long record light emission by deep-sea measured from December 2007 June 2010 at ANTARES underwater neutrino telescope in NW Mediterranean Sea, jointly with synchronous hydrological records. This longest continuous time-series bioluminescence ever recorded. Our reveals several weeks long, seasonal...
RNA-seq was used to study the response of Desulfovibrio hydrothermalis, isolated from a deep-sea hydrothermal chimney on East-Pacific Rise at depth 2,600 m, various hydrostatic pressure growth conditions. The transcriptomic datasets obtained after 26, 10 and 0.1 MPa identified only 65 differentially expressed genes that were distributed among four main categories: aromatic amino acid glutamate metabolisms, energy metabolism, signal transduction, unknown function. gene expression patterns...
Abstract The vertical flux of marine snow particles significantly reduces atmospheric carbon dioxide concentration. In the mesopelagic zone, a large proportion organic carried by sinking dissipates thereby escaping long term sequestration. Particle associated prokaryotes are largely responsible for such loss. However, links between this important ecosystem and ecological processes as community development on different particle fractions (sinking vs. non-sinking) yet virtually unknown. This...
AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 32:209-218 (2003) - doi:10.3354/ame032209 Role of deep-sea bacteria in organic matter mineralization and adaptation hydrostatic pressure conditions NW Mediterranean Sea Christian Tamburini*, Jean Garcin, Armand Bianchi Laboratoire de Microbiologie Marine, CNRS-INSU, UMR 6117, Université la Méditerranée, Centre...
A novel sulfate-reducing bacterium, designated C1TLV30(T), was isolated from wood falls at a depth of 1693 m in the Mediterranean Sea. Cells were motile vibrios (2-4 × 0.5 µm). Strain C1TLV30(T) grew temperatures between 15 and 45 °C (optimum 30 °C) pH 5.4-8.6 7.3). It required NaCl for growth 25 g l(-1)) tolerated up to 80 l(-1). used as energy sources: lactate, fumarate, formate, malate, pyruvate ethanol. The end products lactate oxidation acetate, H(2)S CO(2) presence sulfate terminal...
Desulfovibrio piezophilus strain C1TLV30T is a piezophilic anaerobe that was isolated from wood falls in the Mediterranean deep-sea. D. represents unique model for studying adaptation of sulfate-reducing bacteria to hydrostatic pressure. Here, we report 3.6 Mbp genome sequence this bacterium. An analysis revealed presence seven genomic islands as well gene clusters are most likely linked life at high Comparative genomics and differential proteomics identified transport solutes amino acids...
Abstract. The long-term monitoring of basic hydrological parameters (temperature and salinity), collected as time series with adequate temporal resolution (i.e. a sampling interval allowing the all important timescales) in key places Mediterranean Sea (straits channels, zones dense water formation, deep parts basins), constitute priority context global changes. This led CIESM (The Science Commission) to support, since 2002, HYDROCHANGES programme...
Bacterial-bioluminescence regulation is often associated with quorum sensing. Indeed, many studies have been made on this subject and indicate that the expression of light-emission-involved genes density-dependent. However, most these concerned two model species, A. fischeri V.campbellii. Very few works done bioluminescence for other bacterial genera. Yet, according to large variety habitats luminous marine bacteria, it would not be surprising find different light-regulation systems. In...