CAIGNARD, Thomas; KREMER, Antoine; FIRMAT, Cyril; NICOLAS, Manuel; VENNER, Samuel; DELZON, Sylvain

doi:10.1038/s41598-017-09172-7

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CAIGNARD, Thomas
Biodiversité, Gènes & Communautés [BioGeCo]

KREMER, Antoine
Biodiversité, Gènes & Communautés [BioGeCo]

FIRMAT, Cyril
Unité de Recherche Pluridisciplinaire Prairies et Plantes Fourragères [P3F]
Biodiversité, Gènes & Communautés [BioGeCo]

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Article de revue

Ce document a été publié dans

Scientific Reports. 2017, vol. 7, n° 1, p. 1-8

Nature Publishing Group

Résumé en anglais

The changes in reproductive phenology (i.e. timing of flowering and fruiting) observed in recent decades demonstrate that tree reproduction has already been altered by climate change. However, understanding the impact of these changes in reproductive success and fitness remains a major challenge for ecologists. We describe here a previously unreported phenomenon: a significant increase in the reproductive effort (seed production) of temperate oaks with increasing spring temperature, observed over the last decade. In contrast, no relationship was found between seed production and precipitation. This sensitivity of seed production to temperature was confirmed by a “space-for-time” substitution based on elevation gradients. Our findings suggest that global warming may enhanceoak reproductive effort in temperate ecosystems. Nevertheless, while fitness can be enhanced by higher levels of seed production, it also depends on the frequency and synchronization of mast seeding production, which may also be influenced by climate change.< Réduire

Mots clés

changement de température

production de semences

quercus petraea

quercus robur

gland

adaptation au changement climatique

changement climatique

Mots clés en anglais

glans

pedunculate oak

sessile oak

global change

DOI

http://dx.doi.org/10.1038/s41598-017-09172-7

Projet Européen

From Holocene to Anthropocene: the pace of microevolution in trees

Project ANR

Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

Origine

Importé de hal

Unités de recherche

BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202