Keywords: Primary producers, photosynthesis, phytoplankton, algae, ecophysiology, TEP, artificial reefs, high frequency, coastal ecosystems.

A specialist in phytoplankton and the ecophysiology of marine primary producers, I am interested in the characterization and evolution of carbon fluxes under the effect of anthropogenic pressures, such as eutrophication and habitat artificialization. My work leads me to work both in the laboratory and in situ, both on the surface and while diving. My main field of study is the English Channel ecosystem, but I also work in the French West Indies, particularly in the Guadeloupe archipelago, in collaboration with the University of the Antilles and the OHM Littoral Caraïbe.

I notably develop high-frequency photosynthesis measurements, carried out from the SMILE instrumented buoy and while diving using programmable benthic chambers (cloches benthiques programmables). These approaches are complemented by a characterization of biodiversity and local environmental pressures.

Ecophysiological Approach to the Study of Marine Algae and Marine Primary Production: From Cultures to Coastal Ecosystems.

My research focuses are the following:

• Study of successions and phytoplankton production by developing an ecophysiological approach. Study of production/diversity relationships in situ.
• Study of the dynamics of primary production by developing approaches that allow access to high spatio-temporal frequency production measurements (coupling of modulated fluorescence and carbon isotopic tracers): e.g., the SMILE instrumented buoy.
• Study of the relationship between productivity and biodiversity in coastal and estuarine ecosystems.
• Study of the productivity and biodiversity of algae on artificial reefs and hard substrates – Measurements while diving.
• Study of the metabolic orientation of carbon fluxes from carbon acquisition through photosynthesis to its excretion (TEP, EPS) as a function of environmental factors.
• Study of the ecophysiology of diatoms with a particular focus on the Pseudo-nitzschia diatom genus for many years.

Main Research Programs:

• European Interreg IVa Programme CHARM3 (2009-2012). CHannel integrated Approach for marine Resource Management – Phase 3
• National Programme LEFE, CNRS INSU – CROCOCYCLE (2009-2012). Metabolic regulations of nitrogen (N2​) fixation, carbon acquisition and their dependence on the cell cycle in unicellular cyanobacteria
• ANR Programme COMANCHE (2011-2014). Écosystemic interactions and anthropogenic impacts in scallop (COquilles Saint-Jacques) populations of the English Channel (MANCHE)
• TAPAS Programme (2012-2013) Toxic Algal blooms Phenology in the bAy of Seine)
• LITEAU Programme – FLAM (2013-2015) Microalgal blooms (eFLorescences microAlgales) in the English Channel: role of watersheds on the development of toxic phytoplankton
• European Interreg IVa Programme RECIF (2013-2015). Reuse of marine co-products in artificial reefs (Réutilisation de coproduits marins en récifs artificiels) and environmental impact monitoring of an artificial reef
• GIP Seine Aval Programme (PROUESSE) (2014-2017). Primary Production in the Seine Estuary (PROduction primaire dans l’Estuaire de Seine)
• SMILE Programme. Instrumented Measurement System for the Coastal Environment (Système de Mesure Instrumenté pour l’Environnement Littoral). Agence de l’eau Seine Normandie, FEDER. $\text{[https://crec.unicaen.fr/?p=4084](https://crec.unicaen.fr/?p=4084)}$
• H2020 Programme. JERICO NEXT (2015-2019). $\text{[https://www.jerico-ri.eu/](https://www.jerico-ri.eu/)}$
• GIP Seine Aval Programme (SA6) (SARTRE) (2019-2022). Seine Aval: Estuarine Trophic Networks (Seine Aval : Réseaux Trophiques Estuariens). $\text{[https://www.seine-aval.fr/projet/sartre/](https://www.seine-aval.fr/projet/sartre/)}$
• European Interreg Va Programme (MARINEFF) (2018-2023) – MARine INfrastructures EFFects. $\text{[https://marineff-project.eu/](https://marineff-project.eu/)}$
• DYSTRO-B Programme (2023-2026). Eutrophication and dystrophy in the Bay of Seine: Impacts on the structure of phytoplankton communities and their productivity. AESN – Normandy Region
• Priority Research Programme “Ocean & Climate” RIOMAR (2022- 2027): Observing and anticipating the evolution of French coastal zones under river influence in the 21st century (Observer et anticiper l’évolution des zones côtières françaises sous influence des fleuves au 21e siècle). $\text{[https://riomar.lsce.ipsl.fr/](https://riomar.lsce.ipsl.fr/)}$