A5034967125- Isotope Analysis in Ecology
- Mercury impact and mitigation studies
- Geology and Paleoclimatology Research
- Heavy Metal Exposure and Toxicity
- Heavy metals in environment
- Archaeology and ancient environmental studies
- Marine and coastal ecosystems
- Marine animal studies overview
- Pleistocene-Era Hominins and Archaeology
- Maritime and Coastal Archaeology
- Environmental and Cultural Studies in Latin America and Beyond
- Latin American history and culture
- Historical and Cultural Archaeology Studies
- Water Governance and Infrastructure
- Pacific and Southeast Asian Studies
- Aquatic Invertebrate Ecology and Behavior
- Water Treatment and Disinfection
- Archaeological Research and Protection
Universidad Mayor de San Andrés
2017-2025
Institut des Sciences de la Terre
2020-2025
Université Gustave Eiffel
2020-2025
Université Savoie Mont Blanc
2020-2025
Centre National de la Recherche Scientifique
2022
Université Grenoble Alpes
2022
Institut de Recherche pour le Développement
2022
The sources and factors controlling concentrations of monomethylmercury (MMHg) in aquatic ecosystems need to be better understood. Here, we investigated Hg transformations sediments, periphyton associated with green algae's or plants, benthic biofilms from the Lake Titicaca hydrosystem compared them occurrence active methylating microorganisms extracellular ligands. Intense methylation was found periphyton, while it remained low sediments plants' periphyton. Demethylation varied between...
Holocene climate in the high tropical Andes was characterized by both gradual and abrupt changes, which disrupted hydrological cycle impacted landscapes societies. High-resolution paleoenvironmental records are essential to contextualize archaeological data evaluate sociopolitical response of ancient societies environmental variability. Middle-to-Late water levels Lake Titicaca were reevaluated through a transfer function model based on measurements organic carbon stable isotopes, combined...
In shallow aquatic environments, sediment is a significant source of monomethylmercury (MMHg) for surface water (SW). High-altitude ecosystems are characterized by extreme hydro-climatic constraints (e.g., low oxygen and high UV radiation). We studied, during two seasons, the diel cycles MMHg in SW porewaters (PW) Lake Uru (3686 m a.s.l, Bolivia) contaminated urban mining activities. Our results show that changes concentrations (up to 1.8 ng L−1) overwhelm seasonal ones, with higher...
The urban fabric of Roman cities developed through the installation water supply networks, mainly made lead (Pb). In Gaul, city Vienne (France) was central in manufacturing Pb artifacts, including large volumes pipes. Although artifacts were often labeled with stamps indicating location manufacturing, our knowledge provenance extracted ore and way they imported remains limited. this study, analyzed for isotope signatures to document source used Vienne's manufactories. then compared new local...
Cultural eutrophication is the leading cause of water quality degradation worldwide. The traditional monitoring time-consuming and not integrative in space time. Here, we examined use carbon (δ13C) nitrogen (δ15N) isotopic composition to track degree a bay Lake Titicaca impacted by wastewater discharges. Our results show increasing δ13C decreasing δ15N signatures macrophytes suspended particulate matter with distance source. In contrast signatures, in-between aquatic plants distributed along...