A5015221898- Marine Biology and Ecology Research
- Marine and coastal ecosystems
- Coastal and Marine Dynamics
- Marine and coastal plant biology
- Geological formations and processes
- Coastal wetland ecosystem dynamics
- Coastal and Marine Management
- Marine and environmental studies
- Microbial Community Ecology and Physiology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Remote-Sensing Image Classification
- Free Radicals and Antioxidants
- Catalytic Processes in Materials Science
- Advanced Image Fusion Techniques
- Atmospheric chemistry and aerosols
Université du littoral côte d'opale
2006-2024
Laboratoire d’Océanologie et de Géosciences
2011-2024
Centre National de la Recherche Scientifique
2006-2022
Université de Lille
2011-2017
Laboratoire écologie, évolution, interactions des systèmes amazoniens
2015
University of French Guiana
2015
Université Lille Nord de France
2011
Abstract. To study changes in phytoplankton community composition at different time scales, an automated flow cytometer (Cytosub, Cytobuoy b.v.) was deployed on the MAREL Carnot monitoring station Boulogne-sur-Mer (France) during spring (2021, 2022) and summer (2022), following Eulerian approach. Phytoplankton dynamics were recorded every 2 hours, distinguishing 11 Functional Groups (PFGs) based optical fluorescence properties. This enabled detailed characterization of PFG successions,...
Abstract The gas‐phase reaction of oxygenated aromatic compounds m ‐cresol, o and p ‐cresol with hydroxyl radicals has been studied by GC‐MS. Experiments have performed in a large‐volume photoreactor (8000 L) at 294 ± 2 K atmospheric pressure. relative kinetic method was used to determine the rate constants for these reactions, 1,3,5‐trimethylbenzene as reference compound. obtained are k OH ( ‐cresol) = (5.88 0.92) × 10 −11 cm 3 molecule −1 s , (4.32 0.52) (4.96 0.75) . degradation products...
After the exponential growth phase, variability in scattering efficiency of phytoplankton cells over their complete life cycle is not well characterised. Bulk measurements are impacted by senescent and detritrus. Thus analysis evolution optical properties thanks to morphological and/or intra-cellular variations remains poorly studied. Using Cytosense flow cytometer (CytoBuoy b.v., NL), temporal course forward sideward efficiencies two species (Thalassiosira pseudonana Chlamydomonas...
A new, fully‐automated, closed‐chamber system was developed for measuring photosynthetic activity in aquatic plants, algae, or corals during immersion. The performance of this system, which monitors oxygen exchange, evaluated both the laboratory and situ under natural conditions using seaweed Laminaria digitata . Intact, large individuals were placed inside chamber kept place by a plastic grid transparent Perspex dome. separated upper incubation containing alga from detectors that situated...
Phytoplankton stoichiometry and cell size could result from both phenology environmental change. Zooplankton graze on primary producers, this drives the balance of ecosystem biogeochemical cycles. In study, we performed incubations with copepods coccolithophores including different prey sizes particulate carbon contents by considering phytoplankton biovolume concentration instead chlorophyll a level (Chl a) as is usually in such studies. The egestion fecal pellet ingestion rates were...