Julie TOURNIAIRE
About me.
I am an Assistant Professor (Maîtresse de conférences) at the Université de Franche-Comté, where I am part of the Probability and Statistics group – Laboratoire de Mathématiques de Besançon. I am also a member of the Stochastic Modelling in Ecology & Evolution group.
Before that, I was a Postdoctoral Researcher at the University of Vienna, under the FWF Project Waves in Population Genetics led by Emmanuel Schertzer. I also spent two years as a Marie Skłodowska-Curie fellow, at ISTA in the Evolutionary genetics group (Barton group).
I completed my Ph.D. at the École Polytechnique, CMAP, under the supervision of Pascal Maillard and Gaël Raoul. The manuscript of my thesis, entitled Spatial dynamic of interfaces in ecology: deterministic and stochastic models can be found here.
My research is in probability theory, focusing on microscopic models for front propagation (in particular branching systems) and their applications to ecology and population genetics. More generally, I am interested in the impact of structure on the genetic diversity of populations.
Contact.
Laboratoire de Mathématiques, Université de Franche-Comté
16 route de Gray, 25030 Besançon CEDEX
Email: julie.tourniaire 'at' univ-fcomte.fr
News.
The second edition of the Besançon Meeting on Probability, Ecology & Evolution 2026 will take place from 9–11 September 2026.
Publications.
-
Spectral analysis and \(k\)-spine decomposition of inhomogeneous branching Brownian motions.
Genealogies in fully pushed fronts
with E. Schertzer
42 pages, The Annals of Probability 53(4), pp 1382–1433, 2025
-
A branching particle system as a model of semipushed fronts
69 pages, The Annals of Probability 52(6), pp 2106–2172, 2024
Preprints.
-
Stochastic neutral fractions and the effective population size
with R. Forien, E. Schertzer and Z. Talyigas.
2025, 38 pages, preprint – arXiv version
-
Power-law scaling of the effective population size in a branching particle system for moderate mutation-selection
with F. Boenkost.
2024, 30 pages, preprint – arXiv version
-
Genealogies under purifying selection
with F. Boenkost and K. A. Khudiakova
2024, 21 pages, preprint – bioRxiv version
-
Convergence of spatial branching processes to \(\alpha\)-stable CSBPs: Genealogy of semipushed fronts
with F. Foutel-Rodier and E. Schertzer
2024, 64 pages, preprint – arXiv version
-
Spreading speed of locally regulated population models in macroscopically heterogeneous environments
with P. Maillard and G. Raoul.
2021, 41 pages, preprint – arXiv version
Short CV.
-
Postdoctoral researcher at UniWien
FWF project Waves in Population Genetics (Austrian Science Fund)
Principal Investigator Emmanuel Schertzer.
March 2024 – September 2024
-
Postdoctoral researcher at IST Austria
Marie Skłodowska-Curie fellow, IST Bridge Program, ISTA
Evolutionary genetics group (Barton group)
March 2022 – March 2024
-
Ph.D in mathematics, École Polytechnique
Centre de Mathématiques Appliquées
Spatial dynamic of interfaces in ecology: deterministic and stochastic models
Under the supervision of P. Maillard and G. Raoul.
September 2018 – September 2021
Notes for Talks & Seminars.
- Stochastic neutral fractions and the effective population size – notes.
- A branching particle system as a model of pushed fronts – notes – slides.