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Oak masting drivers vary between populations depending on their climatic environments

hal.structure.identifierEcologie quantitative et évolutive des communautés
dc.contributor.authorFLEUROT, Emilie
hal.structure.identifierEcologie quantitative et évolutive des communautés
dc.contributor.authorLOBRY, Jean R
hal.structure.identifierOffice national des forêts [ONF]
dc.contributor.authorBOULANGER, Vincent
hal.structure.identifierEcologie quantitative et évolutive des communautés
dc.contributor.authorDÉBIAS, François
hal.structure.identifierEcologie quantitative et évolutive des communautés
dc.contributor.authorMERMET-BOUVIER, Camille
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCAIGNARD, Thomas
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierEcologie quantitative et évolutive des communautés
hal.structure.identifierUniversité de Lyon
hal.structure.identifierUniversité Claude Bernard Lyon 1 [UCBL]
dc.contributor.authorBEL-VENNER, Marie-Claude
hal.structure.identifierEcologie quantitative et évolutive des communautés
dc.contributor.authorVENNER, Samuel
dc.date.issued2023-03-27
dc.identifier.issn0960-9822
dc.description.abstractEnLarge interannual variation in seed production, called masting, is very common in wind-pollinated tree populations and has profound implications for the dynamics of forest ecosystems and the epidemiology of certain human diseases. 1 ,2 ,3 ,4 ,5 Comparing the reproductive characteristics of populations established in climatically contrasting environments would provide powerful insight into masting mechanisms, but the required data are extremely scarce. We built a database from an unprecedented fine-scale 8-year survey of 150 sessile oak trees (Quercus petraea) from 15 populations distributed over a broad climatic gradient, including individual recordings of annual flowering effort, fruiting rate, and fruit production. Although oak masting was previously considered to depend mainly on fruiting rate variations, 6 ,7 we show that the female flowering effort is highly variable from year to year and explains most of the fruiting dynamics in two-thirds of the populations. What drives masting was found to differ among populations living under various climates. In soft-climate populations, the fruiting rate increases initially strongly with the flowering effort, and the intensity of masting results mainly from the flowering synchrony level between individuals. By contrast, the fruiting rate of harsh-climate populations depends mainly on spring weather, which ensures intense masting regardless of the flowering synchronization level. Our work highlights the need for jointly measuring flowering effort and fruit production to decipher the diversity of masting mechanisms among populations. Accounting for such diversity will be decisive in proposing accurate, and possibly contrasted, scenarios about future reproductive patterns of perennial plants with ongoing climate change and their numerous cascading effects.
dc.description.sponsorshipImpact du changement climatique sur la reproduction et la regeneration des arbres forestiers - ANR-19-CE32-0008
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.title.enOak masting drivers vary between populations depending on their climatic environments
dc.typeArticle de revue
dc.identifier.doi10.1016/j.cub.2023.01.034
dc.subject.halSciences du Vivant [q-bio]/Ecologie, Environnement
dc.subject.halSciences du Vivant [q-bio]/Ecologie, Environnement/Bioclimatologie
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles/Sylviculture, foresterie
bordeaux.journalCurrent Biology - CB
bordeaux.page1117-1124.e4
bordeaux.volume33
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-04247374
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04247374v1
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