Fabrice Calmels

TL;DR: Target metagenomic analyses of rigorously authenticated ancient DNA from 30,000-year-old Beringian permafrost sediments are reported and show conclusively that antibiotic resistance is a natural phenomenon that predates the modern selective pressure of clinical antibiotic use.

TL;DR: In this article, a systematic approach was used for the interpretation of the electrical resistivity tomography carried out on two permafrost mounds at Umiujaq in Nunavik, Canada, to assess their internal structure.

TL;DR: In this article, the complete life cycle of a permafrost mound is reconstructed from its growth until its degradation, and the study site is a lithalsa, which is the subject of a long-term monitoring that includes geocryological observations, measurements of permfrost properties on cores, ground temperature measurements, and observations of landform changes.

TL;DR: In this article, the growth of segregated ice lenses in frost susceptible sediments in the discontinuous permafrost zone is the dominant mechanism for the formation of permaferost mounds, such as palsas, lithalsas and permafeur plateaus.

TL;DR: In this paper, the shape and spatial distribution of gaseous inclusions in the permafrost provide some clues on gas source and on the thermo-mechanics of ice segregation during aggradation.