Arctic bloom

How does light control phytoplankton blooms in the Arctic Ocean ?


Mathieu Ardyna

Project type



MITI CNRS ‘Lumière visible et vie’

Project duration

Start Date

March 1, 2022

End Date

March 31, 2024


The objective of Arctic Bloom is to understand how light controls the diversity of phytoplankton blooms in the Arctic Ocean and the dominance of two major microalgal groups: the diatoms and the Prymnesiophytes (Phaeocystis sp.). Two complementary aspects will be studied: (1) the physiological status (growth, photosynthesis, etc.) of uni-algal cultures and co-cultures under different light climates in lab-controlled conditions, (2) the potential succession of diatoms and Prymnesiophytes using in situ mesocosms.

The team

Laboratory Members


  • Mathieu Ardyna, IRL3376 Takuvik, CNRS/Université Laval, Québec, Canada
  • Thomas Lacour, Ifremer Nantes, PDG-ODE PHYTOX-PHYSALG