Major research topics

  • Analysis of marine eukaryotic communities using metabarcoding (nuclear 18S rRNA, plastid 16S rRNA genes).
  • Diversity and oceanic distribution of marine phytoplankton, in particular green algae and pelagophytes.
  • Polar ohytoplankton communities and their adaptation to the long winter polar night.
  • Development of databases for the analysis of eukaryotic metabarcodes: PR2, pr2-primers and metaPR2 (in progress)

Current Collaborations


PhenoMap (2020-2023)

Characterize unknown phytoplankton species

Phytopol (2015-2021)

Phytoplankton survival in the polar night

TaxMarc (2018-2021)

Marine protists in a changing Arctic

Green Edge (2015-2016)

The Arctic Spring Bloom.


International collaborative projects.


Roscoff Culture Collection


18S rRNA sequence database


18S rRNA metabarcode database

Micro B3 (2012-2015)

Marine Microbial Biodiversity, Bioinformatics, Biotechnology

MaCuMBA (2012-2016)

Marine Microorganisms: Cultivation Methods for Improving their Biotechnological Applications

Malina (2008-2011)

The Beaufort Sea ecosystem.

Recent Publications

More publications

Metabarcoding dataset obtained during the 2014 MicroPolar cruises off Svalbard.
Earth System Science Data 13:4913-4928, 2021

A new species of cryptophyte isolated off both Brazil and Japan is described.
Protist (in press), 2021

A database of primer and primer sets for protists metabarcoding using the 18S rRNA gene.
Molecular Ecology Resources (in press), 2021

The MALINA oceanographic campaign was conducted during summer 2009 to investigate the carbon stocks and the processes controlling the carbon fluxes in the Mackenzie River estuary and the Beaufort Sea.
Earth System Science Data, 13: 1561–1592, 2021

We analyzed the phytoplankton community from coastal waters of Fildes Bay in the West Antarctic Peninsula between January 2014 and 2015 using three metabarcoding approaches.
Scientific Reports 11: 1368, 2021

We found no evidence of phago-mixotrophy in any M. polaris strain based on flow cytometric measurement of prey ingestion. In addition, in silico predictions reveal that members of the genus Micromonas lack a genetic signature of phagocytotic capacity..
Journal of Phycology 57, 435-446, 2021

Based on the phylogenetic placement and scale morphology of Pseudohaptolina sorokinii we propose the new combination Pseudohaptolina birgeri and emend the description of this species..
Phycologia, 56: 606-615, 2020

We describe two new species of Mantoniella, M. beaufortii and M. baffinensis that are most similar to the cosmopolitan M. squamata. Screening of global marine metabarcoding datasets indicates M. beaufortii has only been recorded in seawater and sea ice samples from the Arctic while no environmental barcode matches M. baffinensis suggesting that they are cold or ice-adapted Mantoniella species.
Journal of Phycology, 56: 37-51, 2020

More than 1,000 cultures from the Arctic were obtained, characterized by 18S rRNA sequencing and optical microscopy and de-replicated.
Elementa 8, p.6, 2020

Submitted Publications

More Publications

. Global patterns and rates of habitat transitions across the eukaryotic tree of life. Nature Ecology and Evolution (submitted), 2021.

Preprint Code Dataset Project Project Supplementary material

. Transcriptomes from the Diatoms Thalassiosira and Minidiscus from the English Channel and Antarctica.. MSpectrum (submitted), 2021.

Preprint Project Project

. A user guide to environmental protistology: primers, metabarcoding, sequencing, and analyses. Mol Ecol Res (submitted), 2019.

Preprint PDF Code Dataset Project

. Pelagophyte assemblages of the global ocean display low intraspecific diversity. Environmental Microbiology (submitted), 2018.

Project Project