University of Worcester Worcester Research and Publications

Climate change related phenological decoupling in species belonging to the Betulaceae family.

Picornell, Antonio ORCID:, Smith, Matt ORCID: and Rojo, Jesús (2022) Climate change related phenological decoupling in species belonging to the Betulaceae family. International Journal of Biometeorology. ISSN 1432-1254

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Betulaceae species are anemophilous, and allergens from their pollen are a major cause of respiratory allergies in temperate areas where they are widely distributed. It is expected that, due to the strong influence of temperature on Betulaceae phenology, global warming will impact both the distribution and phenology of these species during the coming decades. This study examines potential decoupling of flowering and leafing phenophases in Betulaceae species (i.e. Alnus glutinosa, Betula pendula and Corylus avellana) over long-term (1951-2015) and as shorter (15-year) periods. Phenological phases for flowering and leaf unfolding of Betulaceae species from the Pan-European Phenology (PEP725) database were examined along with maximum and minimum daily temperature data for the periods September-October-November (SON), December-January-February (DJF) and March-April-May (MAM). Significant increases in temperature since 1951 have been recorded in the relevant chilling and forcing periods. Both flowering and leaf unfolding phenophases are advancing, but flowering is advancing faster than leaf unfolding. This is increasing the time between phenophases, although analysis of 15-year periods shows that the pattern of change was not constant. The results presented here represent the most comprehensive analysis of flowering and leaf unfolding phenophases of Betulaceae species using the PEP725 database to date. It is expected that these changes to Betulaceae phenology will continue and that global warming-related phenological decoupling will increase plant stress in Betulaceae populations in central Europe. [Abstract copyright: © 2022. The Author(s) under exclusive licence to International Society of Biometeorology.]

Item Type: Article
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Uncontrolled Discrete Keywords: Flowering, Leaf unfolding, Chilling, Global warming, Forcing, Phenology
Divisions: College of Health, Life and Environmental Sciences > School of Science and the Environment
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Copyright Info: © The Author(s) under exclusive licence to International Society of Biometeorology 2022
SWORD Depositor: Prof. Pub Router
Depositing User: Prof. Pub Router
Date Deposited: 22 Nov 2022 17:19
Last Modified: 22 Nov 2022 17:19

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