Jean-David Grattepanche => Ecology and biodiversity of microbes

JD sampling from the CTD rosette onboard the RVIB NBP (2019)

Jean-David Grattepanche

Associate Professor of Research

Department of Biology

Temple University

Philadelphia, PA, 19122, USA

Research Topics

Spatio-temporal variability and diversity of microbes (eukaryotes and prokaryotes)

Taxonomic and functional diversity of microbes (eukaryotes and prokaryotes)

Microbial food web

Phytoplankton-microzooplankton relationship

Microbial eukaryotic populations in Antarctica

Find me on

News

September 2026: Teaching Genomic Biology / Genomics at Temple University.
June 2026: Manuscript entitled "Mixotrophy in the polar haptophyte Phaeocystis antarctica" accepted in Polar Biology
January 2026: Manuscript entitled "A Mathematical Model of Microbially-Induced Convection in Sea Ice" accepted in The Cryosphere
July 2025: Manuscript entitled "Influences of Temperature and Nutrient Concentration on the Balance of Phototrophy and Phagotrophy in a Freshwater Mixotrophic Chrysophyte" accepted in Journal of Plankton Research
July 2025: Manuscript entitled "Influences of Temperature and Nutrient Concentration on the Balance of Phototrophy and Phagotrophy in a Freshwater Mixotrophic Chrysophyte" accepted in Journal of Plankton Research
July 2025: Manuscript entitled "Influences of Temperature and Nutrient Concentration on the Balance of Phototrophy and Phagotrophy in a Freshwater Mixotrophic Chrysophyte" accepted in Journal of Plankton Research
July 2025: Promotion to Associate Professor of Research at Temple University.
May 2025: Manuscript entitled "Temperature- and nutrient-mediated phagotrophic and phototrophic responses in the polar adapted Dinobryon faculiferum" accepted in Aquatic Microbial Ecology
January 2025: Teaching Computational Genomics at Temple University.
September 2024: Teaching Genomic Biology / Genomics at Temple University.
August 2024: Paper on Subaerial Biofilms published in Bulletin of Mathematical Biology
May 2024: Received BRIDGE funding from OVPR Temple University in collaboration with Bob Sanders
February 2024: Oral communication at Ocean Science Meeting 2024 (ASLO) at New Orleans, Lousiana, USA.
January 2024: Passed successfully the N5 level of Japanese Langage Proficient Test.
January 2024: Teaching Computational Genomics at Temple University.
September 2023: Associate Editor for Frontiers in Microbiology and Frontiers in Marine Sciences.
July 2023: NSF ANT grant resubmitted (2) to look at the impact of depth on microbial eukaryotes diversity and function in the Southern Ocean in contrasting seasons.
June 2023: New collaboration with Isaac Klapper and Bettina Buttaro: Subaerial biofilm (molecular and bioinformatics consultant).
May 2023: NSF DMS proposal submitted: Collaboration with Temple BioMathematician Isaac Klapper.
March 2023: Almost 300 amplicon sample dataset to look at the diversity of mixotrophs in WAP.
November 2022: officially a US citizen

Programs

In prep
NSF BIO Microbial food web: Linking Community Assembly and Trophic Interactions in Urban Monument Microbiomes.
PI JD Grattepanche, Co-PIs Isaac Klapper and Bettina Buttaro.
NSF ANT Microbial Predation as a Driver of Carbon Fate in the Western Antarctic Peninsula
PI JD Grattepanche, Co-PIs Bob Sanders (Temple).

In Progress

Jean-David Grattepanche and Laura Katz on the deck of the R/V Cape Hatters (2012)

JD and Laura Katz on the deck of the R/V Cape Hatters (2012)

Jean-David Grattepanche, Chris Carnivale and Bob Sanders on the deck of the RVBI Nathaniel B. Palmer (2022)

Bob Sanders, JD Grattepanche, and Chris Carnivale on the deck of the RVBI Nathaniel B. Palmer (NBP2206 / 2022)

Completed

2025-2026 -Bridge Research Program: DIVERSITY & FUNCTION OF ANTARCTIC EUKARYOTIC MICROBES.
PI Bob Sanders

2018-2023 -Diversity and ecological impacts of Antarctic mixotrophic phytoplankton (NSF US).
PI Bob Sanders (Temple), Co-PIs Becky GAST (WHOI) and Wade Jeffrey (UWF).

2016-2021 - The Ecological Impact of Mixotrophic Algae in a Changing Arctic Marine Climate.
PI Bob Sanders (Temple), Co-PIs Becky GAST (WHOI).

2015-2020 - GoLife: Collaborative Research: Bringing the diverse microbial clade Stramenopila + Alveolata + Rhizaria (SAR) into a modern genomic context. (NSF US).
Coordinator: PI Chris LANE, Co-PIs Laura A. KATZ and Chuck DELWICHE.

2015 - 2017 - Diversity and dynamics of planktonic ciliates what can next generation sequencing technologies tell us? (NSF US).
Coordinator: Pr. Laura A. KATZ and Pr. George B. McMANUS.

2012 - 2014 - Project Diversity and biogeography of marine oligotrich and choreotrich ciliates (NSF US).
Coordinator: Pr. Laura A. KATZ and Pr. George B. McMANUS.

2011 - Project IMMERSE (CNRS EC2CO): Diversity and seasonal variability of heterotrophic eukaryotic communities in a productive marine environment (Eastern English Channel).
Coordinator: Pr Urania CHRISTAKI

2011 - Project ICCARE (Région Nord-Pas de Calais): Impact des Changements Climatiques et Anthropiques sur la biodiversité des pRotistes des Ecosystèmes côtiers.
Coordinator: Pr Sébastien LEFEBVRE

2010 - 2011 ANR DREP: Diversity & roles of eumycetes in the pelagial.
Coordinator: DR Télesphore SIME-NGANDO

2010 - 2011 - Project BOUM (SESAME): Biogeochemistry from the Oligotrophic to Ultraoligotrophic Mediterranean.
Coordinator: Dr. Thierry MOUTIN.

Jean-David Grattepanche