RenLiangRaymondEtAl2020

Référence

Ren, P., Liang, E., Raymond, P., Rossi, S. (2020) Phenological differentiation in sugar maple populations and responses of bud break to an experimental warming. Forests, 11(9). (Scopus )

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. © 2020 by the authors.

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@ARTICLE { RenLiangRaymondEtAl2020,
    AUTHOR = { Ren, P. and Liang, E. and Raymond, P. and Rossi, S. },
    JOURNAL = { Forests },
    TITLE = { Phenological differentiation in sugar maple populations and responses of bud break to an experimental warming },
    YEAR = { 2020 },
    NOTE = { cited By 0 },
    NUMBER = { 9 },
    VOLUME = { 11 },
    ABSTRACT = { 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. © 2020 by the authors. },
    AFFILIATION = { College of Life Sciences, Anhui Normal University, Wuhu, 241000, China; Département des Sciences Fondamentales, Université du Quebec à Chicoutimi, Chicoutimi, QC G7H2B1, Canada; Key Laboratory of Alpine Ecology, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; CAS Centre for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100101, China; Direction de la Recherche Forestière, Ministère des Forêts, de la Faune et des Parcs du Québec, Québec, QC G1P3W8, Canada; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China },
    ART_NUMBER = { 929 },
    AUTHOR_KEYWORDS = { Acer saccharum; Bud burst; Climate change; Ecotype; Growth chamber; Phenology; Temperature },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.3390/F11090929 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091057682&doi=10.3390%2fF11090929&partnerID=40&md5=86f38326d549a5c732f9087c7f18b0b5 },
}

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