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Université Côte d'Azur

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Postdoctoral Researcher in Geomicrobiology: Rock Weathering by Microbial Ecosystems Université Côte d'Azur in France

Degree Level

Postdoc

Field of study

Geology

Funding

Available

Deadline

Nov 22, 2026

Country flag

Country

France

University

Université Côte d'Azur

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Keywords

Geology
Environmental Science
Biology
Earth Science
Biogeochemistry
Astrobiology
Geomicrobiology
Microbiome Research
Dna Analysis
Metabarcoding

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About this position

This postdoctoral position at Université Côte d'Azur is part of a project on how microbial ecosystems can alter rocks under conditions reminiscent of the early Earth. The work is centered on geomicrobiology, with a strong interface between microbial ecology, geochemistry, and astrobiology.

The project builds on an existing experimental platform developed at the CEREEP ECOTRON Île-de-France, where rock-weathering reactors reproduce Archean-like conditions. These experiments compare sterile reactors with reactors inoculated using an anoxic microbial ecosystem from Lake Pavin, a ferruginous maar lake in the Massif Central. The initial calibration and sterilization work has already been completed, so the new postdoctoral researcher will join a project that is ready to proceed experimentally.

The successful candidate will take the lead on the biological side of the study, monitoring microbial functions in the incubated reactors and comparing them with sterile controls. The project focuses on an ecosystem with archean-like metabolic functions, including methanogens, methanotrophs, sulfate reducers, sulfur oxidizers, and nitrate reducers. A major part of the role is to characterize microbial communities through DNA extraction and metabarcoding in collaboration with the Genoscope, and to interpret how community composition varies with rock type and environmental conditions.

The position also includes fieldwork at Lake Pavin, where the researcher will help organize and carry out sampling of anoxic water at depths greater than 60 m, including in situ rock incubations and the transport of samples under anoxic conditions back to the laboratory. In addition, the postdoc will design and run a new experiment based on the existing setup, using freshly collected samples, and will contribute to the publication and presentation of the results in international venues.

The advert indicates that the postdoctoral researcher will work alongside a doctoral student who built the experimental device and will contribute to extending the project with an additional experiment. The post is stated to be based between Nice and Paris / Île-de-France.

Funding details

Available

What's required

Experience in microbial ecology, geomicrobiology or astrobiology, with practical experience in culturing and incubating anoxic microorganisms. The advert also seeks someone able to work on the biological side of an ongoing experiment, collaborate on DNA extraction and metabarcoding, and contribute to field sampling and experimental design.

How to apply

Apply via the provided job application link. Submit your application before the deadline on 2026-11-22.

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