Arnaud Louchart

Dr. Arnaud Louchart

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Visiting Address

Droevendaalsesteeg 10
6708 PB Wageningen

+31 (0) 317 47 34 00

The Netherlands


My research concerns phytoplankton dynamics and their intrinsic characteristics (ecological niche and functional traits) in relation to human-induced environmental pressures.


Arnaud obtained a PhD at the University of Littoral and Opale Coast (France) on marine phytoplankton ecology. He gained experience after post-docs at the Stazione Zoologica Anton Dohrn, IFREMER and CNRS before starting his position at NIOO-KNAW. He uses flow cytometry to study functional traits and ecological niches of both marine and freshwater phytoplankton communities. Under Bloomtox project, he brings his expertise to better understand cyanobacterial responses to human-induced environmental pressures, from the cell to communities.

Projects & collaborations


  • Climate change impacts on harmful algal blooms

    Project 2022–Present
    Harmful cyanobacterial blooms produce toxins that are a major threat to water quality and human health. Blooms increase with eutrophication and are expected to be amplified by climate change. Yet, we lack a mechanistic understanding on the toxicity of blooms, and their response to the complex interplay of multiple global change factors. Bloom toxicity is determined by a combination of mechanisms acting at different ecological scales, ranging from cyanobacterial biomass accumulation in the ecosystem, to the dominance of toxic species in the community, contribution of toxic genotypes in the population, and the amounts of toxins in cells.
    Cyanobacterial bloom