Postdoctoral Fellow
Smith College
Department of Biological Sciences
Katz Lab
Northampton, MA, 01063, USA

Google Scholar
Connecting Research and Researchers
Molecular filtration during the cruise on the RV Cape Hatteras
May 31st, 2018: My oral communication at PSA/ISOP meeting 2018 has been accepted.   Time TBA
May 9th, 2018: The paper on diversity of Vernal Pool has been accepted in Journal of Plankton Research. 

April 25th, 2018: My oral communication at ASLO Summer meeting 2018 has been accepted. I will be presenting on Wed, Jun 13, 2018 (04:30 PM - 04:45 PM):  Saanich 1&2 about Assessing Bottom-up and Top-down controls using microcosm and 'omics
March 8th, 2018: The review of the SAR clade is online here with a cool video abstract 

Research Topics

  • Spatio-temporal variability and diversity of planktonic protists
  • Taxonomic and functional diversity of planktonic eukaryotes (Mainly SAR)
  • Microbial and Planktonic food webs
  • Phytoplankton-microzooplankton relationship
Plankton food web (simplified) © JD Grattepanche


  • 2015-2017 - Diversity and dynamics of planktonic ciliates ­ what can next­ generation sequencing technologies tell us? (NSF US). PIs Laura A. KATZ and  George B. McMANUS. 
  • 2015-2020 - GoLife: Collaborative Research: Bringing the diverse microbial clade Stramenopila + Alveolata + Rhizaria (SAR) into a modern genomic context. (NSF US). PI Chris LANE, Co-PIs Laura A. KATZ and Chuck DELWICHE.
  • 2018-2019 - PLANKTONic Eukaryotic PARasites: the parTicular case of PhaeocYstis blooms PLANKTON-PARTY. (EC2CO France). PI Urania CHRISTAKI.

Past Project:
  • 2012-2014 - Project Diversity and biogeography of marine oligotrich and choreotrich ciliates (NSF US). PIs Laura A. KATZ and George B. McMANUS. 
  • 2011 - Project ICCARE (Région Nord-Pas de Calais): Impact des Changements Climatiques et Anthropiques sur la biodiversité des pRotistes des Ecosystèmes côtiers. PI Sébastien LEFEBVRE 
  • 2010 - 2011 ANR DREP: Diversity & roles of eumycetes in the pelagial. PI Télesphore SIME-NGANDO
  • 2011 - Project IMMERSE (CNRS EC2CO): Diversity and seasonal variability of heterotrophic eukaryotic communities in a productive marine environment (Eastern English Channel). PI Urania CHRISTAKI 
  • 2010 - 2011 - Project BOUM (SESAME): Biogeochemistry from the Oligotrophic to Ultraoligotrophic Mediterranean. PI Thierry MOUTIN.


Pr. Laura A. KATZ: Ciliates diversity and biogeography
Pr. George B. McMANUSCiliates diversity and biogeography
Pr. Rob Knight: 'Omics
Pr. Chris Lane: SAR diversity
Pr. Chuck Delwiche: SAR diversity

Pr. Urania CHRISTAKI: PhD advisor, parasitism in the food web
Pr. Konstantinos Ar. KORMAS: clone librairies construction
Dr. Sébastien MONCHY: metagenomic analyses
Dr. Dorothée VINCENT: Prey-predator experiments
JD and Laura on the deck of the R/V Cape Hatters (2012)