Arnaud Louchart

ORCID: 0000-0003-1549-4261
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About
Contact & Profiles
Research Areas
  • Marine and coastal ecosystems
  • Marine Biology and Ecology Research
  • Microbial Community Ecology and Physiology
  • Marine and fisheries research
  • Marine and coastal plant biology
  • Coastal and Marine Management
  • Coastal wetland ecosystem dynamics
  • Geology and Paleoclimatology Research
  • Fish Ecology and Management Studies
  • Geological formations and processes
  • Water Quality Monitoring Technologies
  • Underwater Acoustics Research
  • Water Quality Monitoring and Analysis
  • Water Quality and Pollution Assessment
  • Oceanographic and Atmospheric Processes
  • Marine and Offshore Engineering Studies
  • Aquatic Invertebrate Ecology and Behavior
  • Marine and environmental studies
  • Isotope Analysis in Ecology
  • Protist diversity and phylogeny
  • Algal biology and biofuel production

Ifremer
2022-2024

Laboratoire d’Océanologie et de Géosciences
2018-2024

Université de Lille
2022-2024

Institut de Recherche pour le Développement
2022-2024

Centre National de la Recherche Scientifique
2022-2024

Netherlands Institute of Ecology
2021-2024

Royal Netherlands Academy of Arts and Sciences
2023

Université du littoral côte d'opale
2018-2023

Stazione Zoologica Anton Dohrn
2022-2023

Plankton form the base of marine food webs, making them important indicators ecosystem status. Changes in abundance plankton functional groups, or lifeforms, can affect higher trophic levels and indicate shifts functioning. Here, we extend this knowledge by combining data from Continuous Recorder fixed-point stations to provide most comprehensive analysis time-series for North-East Atlantic North-West European shelf date. We analysed 24 phytoplankton zooplankton datasets 15 research...

10.1016/j.scitotenv.2023.165505 article EN cc-by The Science of The Total Environment 2023-07-12

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,...

10.5194/egusphere-2025-836 preprint EN cc-by 2025-03-04

The recent development of biological sensors has extended marine plankton studies from conducting laboratory bench work to in vivo and real-time observations. Flow cytometry (FCM) shed new light on microorganisms since the 1980s through its single-cell approach robust detection smallest cells. FCM records valuable optical properties scattering fluorescence cells passing a single file front narrow-collimated source, recording tens thousands within few minutes. Depending instrument settings,...

10.3389/fmars.2022.975877 article EN cc-by Frontiers in Marine Science 2022-11-18

Abstract. Global change is known to exert a considerable impact on marine and coastal ecosystems, affecting various parameters such as sea surface temperature (SST), runoff, circulation patterns the availability of limiting nutrients (like nitrogen, phosphorus silicon), with each influencing phytoplankton communities differently. This study based weekly fortnightly in vivo fine-spatial-resolution (∼ 1 km) observations along an nearshore–offshore gradient French waters Eastern English Channel...

10.5194/os-21-679-2025 article EN cc-by Ocean science 2025-03-20

Addressing hydrological, biogeochemical and biological variability in marine systems at different scales is essential for understanding their functioning fate the context of global change increasing anthropogenic pressure. Sub-mesoscale features processes are particularly relevant coastal, marginal shelf seas, frontal (such as Regions Of Freshwater Influence, tidal fronts, upwelling eddies), being sensitive to extreme events influencing human health, economy, well-being. Phytoplankton...

10.5194/oos2025-847 preprint EN 2025-03-25

Abstract The variability of phytoplankton distribution has been unraveled by high‐frequency measurements. Such a resolution can be approached automated pulse‐shape recording flow cytometry (AFCM) operating at hourly sampling resolution. AFCM records morphological and physiological traits as single‐cell optical pulse shapes that used to classify cells into functional groups (PFGs). However, the associated manual post‐processing data coupled with increasing size number datasets is...

10.1002/lom3.10493 article EN Limnology and Oceanography Methods 2022-06-02

Plankton comprises a large diversity of organisms, from pico- to macro-sized classes, and spans several trophic levels, whose population dynamics are characterized by high spatio-temporal variability. Studies integrating multiple plankton groups, in respect size classes still rare, which hampers more thorough description elucidation the full complexity dynamics. Here, we present study on spatial variability five in-situ monitored components, ranging bacteria meso-zooplankton, using...

10.3389/fmars.2022.863996 article EN cc-by Frontiers in Marine Science 2022-07-05

Abstract. Global change is known to exert a considerable impact on marine and coastal ecosystems, affecting various parameters such as sea surface temperature, rain-off, circulation patterns, the availability of limiting nutrients like nitrogen, phosphorus silicon, each influencing phytoplankton communities differently. This study based weekly fortnightly in vivo observations French waters Eastern English Channel at fine spatial resolution (∼1 km) along an inshore-offshore gradient Strait...

10.5194/egusphere-2024-1933 preprint EN cc-by 2024-07-05
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