Postdoctoral researcher M/F
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Organisation/Company CNRS Department Laboratoire Chrono-Environnement Research Field Geosciences Biological sciences Researcher Profile First Stage Researcher (R1) Application Deadline 19 Oct 2026 - 23:59 (UTC) Country France Type of Contract Temporary Job Status Full-time Hours Per Week 35 Offer Starting Date 2 Nov 2026 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No
Offer Description
- Identification of a target gene specific to Choristoneura fumiferana in mitochondrial DNA
- Development of a qPCR and ddPCR protocol to quantify this target gene in sediment matrices (objective: obtain robust and reproducible concentrations)
- Application of this protocol to the project's lacustrine sediment records. For this component, the candidate will benefit from technical support from laboratory staff and may also supervise one or more Master's (M2) students
- Processing of the obtained concentrations (Choristoneura fumiferana DNA) to calculate outbreak frequencies
- Comparison of the obtained data with forest fire records and vegetation dynamics
- Publication of the developed methodology, as well as the combined results in a multi-proxy study on multiple disturbances
This postdoctoral researcher position is part of the ANR RETROPEST project
(“Wildfires & Insect Outbreaks in Boreal Forests: A Combined Approach Using Paleoecology, Sedimentary DNA & Modelling,” 2025–2029, PI: D. Rius).
The main objective of this project is to better characterize the interactions between these two disturbance regimes in response to past, present, and future climate change, and to assess their impact on forest vegetation dynamics in Québec across these same time scales.
The project will rely on a network of regional study sites, including both short cores (ca. 2,000 years) and long cores (ca. 8,000 to 9,000 years, i.e., since deglaciation). It will also incorporate paleoclimatic reconstructions of summer temperatures, as well as reconstructions of vegetation (pollen) and paleofires (charcoal) throughout the Holocene. Spruce budworm (SBW) outbreaks will be reconstructed from sedimentary DNA in lake cores.
The recruited researcher will be supervised by the project PI and by B. Valot (CNRS research engineer), who will provide expertise in molecular biology. They will also benefit from technical support from the molecular biology technical unit staff (A. Cardot-Laboisière), as well as from new facilities dedicated to ancient DNA within the laboratory.
The successful candidate will work at the Chrono-Environnement laboratory, within the DYNABIO team (“Biodiversity Dynamics and Functional Trajectories of Ecosystems”), one of whose three research axes focuses on the “spatio-temporal trajectories of ecosystems in response to global change.”
- PhD in paleoecology sedimentary DNA, e-DNA.
- Strong knowledge of molecular biology techniques and protocols (PCR, qPCR, DD-PCR)
- Strong skills in numerical data processing (proficiency in R)
- Ability to integrate into a multidisciplinary team and participate in collaborative projects.
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