Alexandre POHL

Research Positions

Project [3 years]: BioSIGNAL: Biological pump sensitivity and climate change – Interrogating past environmental perturbations. Modeling changes in deep-time marine planktonic communities and their impact on ocean biogeochemistry, with special focus on ocean oxygenation / anoxia.

Project [2 years]: Investigating and quantifying the impact of the paleogeographical changes on the potential for reef-carbonate development throughout the Cretaceous.

Project [3 years]: Numerical modeling for increased understanding of Ordovician climate. Supervisors: Yannick DONNADIEU (LSCE) and Guillaume LE HIR (IPGP).
Award: Van Straelen Prize from the French Geological Society (SGF).
Award: André Prud’homme Prize from the Meteo and Climate Association.

Ongoing projects

2024–2027 ANR (French National project): “Opening the black box of CYCLOstratigraphy: a mechanistic understanding of the pathway between astronomical forcing and marine SEDiments (CYCLO-SED)” [PI; 320 k€].
2023–2026 Leverhulme (British project): “Earth System dynamics at the dawn of the animal-rich biosphere“ [Co-applicant; PI: M. Williams; 455 k€].
2023–2024 French National Programm (INSU-CNRS): “RadiatiOnS and ExTincTions in eArly Paleozoic oceans: understanding the dynamics of the early marine biosphere (ROSETTA)” [PI; 15 k€].
2023 French National Programm (INSU-CNRS): “Widespread Oceanic Anoxia during the Weissert Event ? (WOAW)” [Partner; PI: M. Martinez; 9 k€].
2023–2026 ANR (French National project): “Evolution of the Cambrian-Ordovician Biodiversification Onset Over Space and Time (ECO-BOOST)“ [Partner; PI: B. Lefebvre; 473 k€].

Past projects

2019–2022 Marie Curie Global Fellowship (European project): “Biological pump sensitivity and climate change: interrogating past environmental perturbations (BioSIGNAL)“ [PI, 257 k€].
2015 French National Programm (INSU-CNRS): “Response of global marine biodiversity to a major climate change: modeling the Ordovician glaciation (445 Ma) with the MITgcm and its marine ecology model Darwin.“ [partner, significantly contributed to the design and writting of the project] (PI: Y Donnadieu).
2014 French National Programm (INSU-CNRS): “Ordovician microfossils and environment : did the Early Ordovician onset of cooling of the Early Palaeozoic Icehouse trigger the most important rise in biodiversity in the history of life on Earth?“ [partner] (PI: TRA Vandenbroucke).

PhD students

⚠️ Full-funded PhD thesis opportunity in Earth system modeling available, applications welcome ! ⚠️
[ongoing] Alexis BALEMBOIS, 2023–2026, “Study of global changes in biodiversity from 540 million years to now to better understand and anticipate future alterations in the context of anthropogenic climate change.” Co-adviser. Principal advisers: G. Beaugrand, B. Lefebvre.

Engineers and post-docs

[past] Alexis BALEMBOIS, Research Engineer, “Developing a model for the evolution of Phanerozoic marine biodiversity”. Duration: 6 month.

Master / bachelor students

[past] Daniel ELIAHOU, M.Sc. 2nd year (ULCO), “Impact of global climate on biodiversity during the Ordovician”. Co-adviser. Principal adviser: G. Beaugrand. Duration: 6 month.
[past] Thanh Nam NGO, 2nd year (Polytech Orléans), “Simulating marine biodiversity using a coupled climate-biodiversity model”. Principal adviser. Co-adviser: A. Brayard. Duration: 1 month.
[past] Houda BEGHOURA, M.Sc. 1st year (Aix-Marseille University), “Impact of the growth of the Ordovician ice sheet on the atmospheric circulation and the carbon cycle”. Principal adviser. Co-adviser: Y. Donnadieu. Duration: 2 months.
[past] Mourad HAGGUI, M.Sc. 2nd year (Aix-Marseille University), “Coupling paleontological database and paleoceanographical modeling to investigate the paleobiogeography of Cretaceous reef carbonates”. Co-adviser. Principal advisor: J. Borgomano. Duration: 5 months.

2021–2022: Member of the evaluation committee, Master in Earth Sciences, Université Libre de Bruxelles (Brussels, Belgium).

Journals

Funding agencies and associations