Widespread terrestrial ecosystem disruption at the onset of the Paleocene–Eocene Thermal Maximum
Mei Nelissen; Debra A. Willard; Johanna H.A. van Konijnenburg‐van Cittert; Gabriel J. Bowen; Teuntje Parnassia Hollaar; Appy Sluijs; Joost Frieling; Henk Brinkhuis · 2026 · Proceedings of the National Academy of Sciences
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Abstract
C-depleted carbon emissions into the ocean/atmosphere system, manifested as a negative carbon isotope excursion (CIE) in sedimentary components, and ~5 °C global average warming. Episodes of hydrological perturbations and soil-erosion have been widely documented for the PETM but their link with vegetation- and carbon cycle changes remain poorly constrained. Here, we present organic microfossil evidence showing a strong increase in fern-dominated pioneer vegetation that replaced coniferous forests on the margin of the Norwegian Sea during the first millennia of the CIE. With the present stratig
Abstract by Mei Nelissen; Debra A. Willard; Johanna H.A. van Konijnenburg‐van Cittert; Gabriel J. Bowen; Teuntje Parnassia Hollaar; Appy Sluijs; Joost Frieling; Henk Brinkhuis, Proceedings of the National Academy of Sciences (2026) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.1073/pnas.2509231122