Constellation, le dépôt institutionnel de l'Université du Québec à Chicoutimi

Phenological differentiation in sugar maple populations and responses of bud break to an experimental warming

Ren Ping, Liang Eryuan, Raymond Patricia et Rossi Sergio. (2020). Phenological differentiation in sugar maple populations and responses of bud break to an experimental warming. Forests, 11, (9), e929.

[thumbnail of forests-11-00929.pdf]
Prévisualisation
PDF - Version publiée
Disponible sous licence Creative Commons (CC-BY 2.5).

1MB

URL officielle: http://dx.doi.org/doi:10.3390/F11090929

Résumé

Species with wide geographical ranges exhibit specific adaptations to local climates, which may result in diverging responses among populations to changing conditions. Climate change has advanced spring phenology worldwide, but questions of whether and how the phenological responses to warming differ among individuals across the natural range of a species remain. We conducted two experiments in January and April 2019, and performed daily observations of the timings of bud break in 1-year-old seedlings of sugar maple (Acer saccharum Marshall) from 25 Canadian provenances at two thermal conditions (14/10 and 18/14 ◦C day/night temperature) in a controlled environment. Overall, bud break started 6 days from the beginning of the experiments and finished after 125 days. The earlier events were observed in seedlings originating from the colder sites. Bud break was delayed by 4.8 days per additional degree Celsius in the mean annual temperature at the origin site. Warming advanced the timing of bud break by 17–27 days in January and by 3–8 days in April. Similar advancements in bud break were observed among provenances under warming conditions, which rejected our hypothesis that sugar maple populations have different phenological responses to warming. Our findings confirm the differentiation in ecotypes for the process of bud break in sugar maple. In cases of homogenous spring warming across the native range of sugar maple, similar advancements in bud phenology can be expected in different populations

Type de document:Article publié dans une revue avec comité d'évaluation
ISSN:1999-4907
Volume:11
Numéro:9
Pages:e929
Version évaluée par les pairs:Oui
Date:2020
Identifiant unique:10.3390/F11090929
Sujets:Sciences naturelles et génie > Sciences appliquées > Climatologie et météorologie
Sciences naturelles et génie > Sciences appliquées > Foresterie et sciences du bois
Sciences naturelles et génie > Sciences naturelles > Biologie et autres sciences connexes
Département, module, service et unité de recherche:Départements et modules > Département des sciences fondamentales
Unités de recherche > Centre de recherche sur la Boréalie (CREB)
Mots-clés:Acer saccharum, bud burst, climate change, ecotype, growth chamber, phenology, temperature
Déposé le:02 juin 2023 12:13
Dernière modification:02 juin 2023 12:13
Afficher les statistiques de telechargements

Éditer le document (administrateurs uniquement)

Creative Commons LicenseSauf indication contraire, les documents archivés dans Constellation sont rendus disponibles selon les termes de la licence Creative Commons "Paternité, pas d'utilisation commerciale, pas de modification" 2.5 Canada.

Bibliothèque Paul-Émile-Boulet, UQAC
555, boulevard de l'Université
Chicoutimi (Québec)  CANADA G7H 2B1
418 545-5011, poste 5630