A5101429508- Geology and Paleoclimatology Research
- Radioactive element chemistry and processing
- Geochemistry and Elemental Analysis
- Environmental Toxicology and Ecotoxicology
- Heavy metals in environment
- Geological formations and processes
- Water Quality Monitoring and Analysis
- Aeolian processes and effects
- Tree-ring climate responses
- Archaeology and ancient environmental studies
- Soil erosion and sediment transport
- Pesticide and Herbicide Environmental Studies
- Planetary Science and Exploration
- Polar Research and Ecology
- Marine and environmental studies
- Geochemistry and Geologic Mapping
- Groundwater and Isotope Geochemistry
- Analytical chemistry methods development
- Methane Hydrates and Related Phenomena
- Cryospheric studies and observations
- earthquake and tectonic studies
- Geological and Geophysical Studies
- X-ray Spectroscopy and Fluorescence Analysis
Swiss Federal Institute of Aquatic Science and Technology
2024-2025
Universität Hamburg
2023-2025
HAW Hamburg
2023-2025
University of the West of Scotland
2023-2024
Université Côte d'Azur
2018
Géoazur
2015
Université Joseph Fourier
2003
Université Grenoble Alpes
2003
Institut Fourier
2003
Centre National de la Recherche Scientifique
1996-2002
Samples of dust from the Greenland Ice Sheet Project 2 (GISP2) ice core, Summit, Greenland, dated within marine isotope stage (between 23,340 and 26,180 calendar years B.P.) around time coldest, local, last glacial temperatures, have been analyzed to determine their provenance. To accomplish this, we compared them with approximately Coeval aeolian sediments (mostly loesses) sampled in possible source areas (PSAs) northern hemisphere. The <5‐μm grain‐size fraction these samples was on...
Abstract. On the basis of a multi-proxy approach and strategy combining lacustrine marine records along north–south transect, data collected in central Mediterranean within framework collaborative project have led to reconstruction high-resolution well-dated palaeohydrological assessment their spatial temporal coherency. Contrasting patterns changes been evidenced Mediterranean: south (north) around 40° N latitude, middle part Holocene was characterised by lake-level maxima (minima), during...
Abstract The use of rare earth elements has increased in recent years, leading to a rise environmental concentrations. Despite the growth number studies regarding toxicity, knowledge gaps remain. For Daphnia magna , standardized test methods involve exposure periods either 48 h or 21 days assess toxicological effects. In this study, period was adjusted 7 evaluate sublethal endpoints not measurable 48-h tests. Additionally, approach enabled us obtain results within shorter time frame than...
Dating recent lake sediment records yielding disturbed 210 Pb profiles has been a problem of wide interest in palaeoclimatic and palaeoseismic studies over the last few centuries. When applied to an alpine sedimentary record, high‐resolution sedimentological study reveals that profile is by occurrence single‐event deposits triggered two different mechanisms: flood events gravity reworking. Removing layers from yields logarithmic depth–activity relationship. Using simple decay model (CFCS)...
Abstract The Sahara experienced several humid episodes during the late Quaternary, associated with development of vast fluvial networks and enhanced freshwater delivery to surrounding ocean margins. In particular, marine sediment records off Western indicate deposition river-borne material at those times, implying sustained discharges along West African margin. Today, however, no major river exists in this area; therefore, origin these sediments remains unclear. Here, using orbital radar...
The release of lanthanides (Ln) into the environment has increased in recent decades due to their expanding applications society. Studying toxicity aquatic ecosystems is urgent and challenging, with contradictory evidence presented literature. This study compared biodistribution La Gd Daphnia magna exposed sub-chronic conditions developed first Toxicokinetic-Toxicodynamic (TKTD) model for these this crustacean. D. were initially 7 days concentrations close LC
Given the need to reduce animal testing for environmental risk assessment, we aim develop a fish invitrome, an alternative modular framework capable of predicting chemical toxicity in without use animals. The central module is validated RTgill-W1 cell line assay that predicts acute chemicals (Organization Economic Cooperation and Development Test Guideline (OECD TG) 249). Expanding towards prediction chronic toxicity, invitrome includes two other well-advanced modules...
The commitment to develop a roadmap for phasing out the use of animals chemical safety assessments was part European Commission's response Citizens' Initiative "Save Cruelty-Free Cosmetics - Commit Europe Without Animal Testing". aims outline milestones and specific actions be implemented in short long-term ultimately phase animal testing assessments. To advance this goal help define structure roadmap, multi-stakeholder roundtable workshop organised by five protection non-governmental...
Abstract. On the basis of a multi-proxy approach and strategy combining lacustrine marine records along north–south transect, data collected in Central Mediterranean within framework collaborative project have led to reconstruction high-resolution well-dated palaeohydrological assessment their spatial temporal coherency. Contrasting patterns changes been evidenced Mediterranean: south (north) around 40° N latitude, middle part Holocene was characterised by lake-level maxima (minima), during...
ABSTRACT Holocene aeolian silts deposited on the Cape Verde Islands provide information about origin of African palaeodusts that have fallen north‐eastern Atlantic ocean over last 10 000 years. Sedimentological composition indicates most these are unquestionably continental origin. Their Sr and Nd isotopic identifies a Saharan origin‐suggesting transport by Harmattan winds. We estimate dust comprises 75–95% material in silts, rest coming from weathering local basaltic bedrock.
Abstract Ice cores from inner East Antarctica provided some of the longest and most detailed climatic reconstructions allowed understanding relationships between atmospheric mineral dust climate. In this work we present synchrotron radiation X‐ray Fluorescence geochemical data TALDICE ice core drilled at Talos Dome, a peripheral dome (Western Ross Sea). Results highlight dominant southern South American origin for during Last Glacial Maximum, similarly to other sites located further inland...
While our awareness of the toxicity rare earth elements to aquatic organisms increases, understanding their direct interaction and accumulation remains limited.
The release of lanthanides (Ln) into the environment has increased in recent decades due to their expanding applications society. Studying toxicity aquatic ecosystems is urgent and challenging, with contradictory evidence presented literature. This study compared biodistribution La Gd Daphnia magna exposed sub-chronic conditions developed first Toxicokinetic-Toxicodynamic (TKTD) model for these this crustacean. D. were initially 7 days concentrations close LC50 (2.10 mg L-1) (1.70 L-1)....