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Species are migrating up to four times faster than climate models predict

Species are migrating up to four times faster than climate models predict

As global warming alters the distribution of life, an international study published in PNAS, composef with CRBE researchers, reveals a significant discrepancy between scientific predictions and observed reality: species are moving up to four times faster than climate models anticipate.

As a result of global warming, many animal and plant species are shifting their ranges in search of more favourable conditions, either by moving towards the poles or by moving to higher altitudes. These shifts, which are already being observed on a global scale, are transforming ecosystems and raising questions about our ability to anticipate their effects.

To gain a better understanding of these dynamics, the researchers compared predictions from climate models with more than 9,500 field observations covering over 3,500 species, spanning several decades, using the international BIOSHIFTS database.

changement-climatique rolland

Continued from the article on : https://crbe.cnrs.fr/en/changement-climatique-et-biodiversite-les-especes-migrent-jusqua-4-fois-plus-vite-que-ne-le-prevoient-les-modeles-climatiques/

See also

Species range shifts often speed ahead of their modeled climatic niches. Oliveira B., Bertrand R., Pinsky M., Casajus N., Wolfe B., Scheffers B., Villalobos F., Grenouillet G., Pecl G., Chen I.-C., Baecher J, Lawlor J., Sunday J., Murienne J., Rolland J., Thompson L., Lancaster L., Rubenstein M., Moore N., Bandara R., Diamond S., Weiskopf S., Lenoir J., Comte L.
doi.org/10.1073/pnas.2515903123
The Proceedings of the National Academy of Sciences, 30 mars 2026.

Modification date: 02 June 2026 | Publication date: 01 June 2026 | By: TULIP Communication / CRBE