A5086201700- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Geochemistry and Elemental Analysis
- Paleontology and Stratigraphy of Fossils
- Geomagnetism and Paleomagnetism Studies
- Marine and coastal ecosystems
- Extraction and Separation Processes
- Ocean Acidification Effects and Responses
- Calcium Carbonate Crystallization and Inhibition
- Isotope Analysis in Ecology
- Genomics and Phylogenetic Studies
- Marine Bivalve and Aquaculture Studies
- Marine Biology and Ecology Research
- Hydrocarbon exploration and reservoir analysis
- Microbial Community Ecology and Physiology
- Archaeology and ancient environmental studies
- High-pressure geophysics and materials
- Identification and Quantification in Food
- earthquake and tectonic studies
- Mercury impact and mitigation studies
- Cell Image Analysis Techniques
- Geological and Geochemical Analysis
- Marine and fisheries research
- Protist diversity and phylogeny
- CO2 Sequestration and Geologic Interactions
Centre de Recherche et d’Enseignement de Géosciences de l’Environnement
2024-2025
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2024-2025
Centre National de la Recherche Scientifique
2019-2024
Institut de Recherche pour le Développement
2024
Aix-Marseille Université
2024
Institut des Sciences de la Terre de Paris
2019-2022
Sorbonne Université
2019-2021
Understanding the spatial and temporal changes in phytoplankton assemblages is essential context of climate change, due to their impact on carbon burial marine food web. Here we investigate effects environmental shifts Mediterranean Sea taxonomy size structure using an AI-based approach. We analyzed two sediment trap series from northwestern between 2010 2018: one oligotrophic Ligurian other Gulf Lion, a region where deep convection occurs regularly winter. used novel deep-learning protocols...
Abstract Diatom communities preserved in sediment samples are valuable indicators for understanding the past and present dynamics of phytoplankton communities, their response to environmental changes. These studies traditionally achieved by counting methods using optical microscopy, a time‐consuming process that requires taxonomic expertise. With advent automated image acquisition workflows, large data sets can now be acquired, but require efficient preprocessing methods. Detecting diatom...
Abstract. Rare earth elements (REEs) and yttrium in seawater originate from atmospheric fallout, continental weathering, transport rivers, as well hydrothermal activity. Previous studies have reported the use of REE Y measurements biogenic carbonates a means to reconstruct these surface processes ancient times. As coastal concentrations partially reflect those nearby it may be possible obtain regional fingerprint bivalve shells for seafood traceability environmental monitoring studies. Here,...
Abstract. Beyond the pCO2 records provided by ice core measurements, quantification of atmospheric CO2 concentrations and changes thereof relies on proxy data, development which represents a foremost challenge in paleoceanography. In paleoceanographic toolbox, coccolithophores occupy notable place, as magnitude carbon isotopic fractionation between ambient type organic compounds that these photosynthetic microalgae synthesize (the alkenones) relatively robust to reconstruct past during...
OPINION article Front. Earth Sci., 21 February 2020Sec. Quaternary Science, Geomorphology and Paleoenvironment Volume 8 - 2020 | https://doi.org/10.3389/feart.2020.00038
Diatom communities preserved in sediment samples are valuable indicators for understanding the past and present dynamics of phytoplankton communities, their response to environmental changes. These studies traditionally achieved by counting methods using optical microscopy, a time-consuming process that requires taxonomic expertise. With advent automated image acquisition workflows, large datasets can now be acquired, but require efficient preprocessing methods. Detecting diatom frustules on...
Abstract. Rare Earth Elements and yttrium (REY) in seawater originate from atmospheric fallout, continental weathering, transport rivers, as well hydrothermal activity. Previous studies reported the use of REY measurements biogenic carbonates a means to reconstruct these surface processes ancient times. As coastal concentrations partially reflect those nearby it may be possible obtain regional fingerprint bivalve shells for provenance environmental monitoring studies. Here, we present...
<p>Despite their omnipresence in pelagic carbonate sediments, the coccoliths, calcite biominerals produced by coccolithophores, have historically been under-exploited palaeoenvironmental studies. This is due, part, to small size (2-20 microns), which makes them difficult isolate from other particles, and large differences isotopic composition existing between coccolith equilibrium conditions. so-called “vital effect” complicates use of geochemistry...
Abstract. Beyond the pCO2 records provided by ice core measurements, quantification of atmospheric CO2 concentrations and changes thereof relies on proxy data, development which represents a foremost challenge in paleoceanography. In paleoceanographic toolbox, coccolithophores occupy notable place, as magnitude carbon isotopic fractionation between ambient type organic compounds that these photosynthetic microalgae synthesize (the alkenones) relatively robust to reconstruct past during...
Figure S1: Synchronizing the MD95-2037 Termination II δ 18 O planktonic record with speleothem records.We first aligned Cibidoides wullerstorfi signal of site (Villanueva et al., 2001) to Regional Deep North Atlantic Benthic Stack