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Chilling and forcing temperatures interact to predict the onset of wood formation in Northern Hemisphere conifers

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F19%3A43915131" target="_blank" >RIV/62156489:43410/19:43915131 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216208:11310/19:10399686

  • Result on the web

    <a href="https://doi.org/10.1111/gcb.14539" target="_blank" >https://doi.org/10.1111/gcb.14539</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1111/gcb.14539" target="_blank" >10.1111/gcb.14539</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Chilling and forcing temperatures interact to predict the onset of wood formation in Northern Hemisphere conifers

  • Original language description

    The phenology of wood formation is a critical process to consider for predicting how trees from the temperate and boreal zones may react to climate change. Compared to leaf phenology, however, the determinism of wood phenology is still poorly known. Here, we compared for the first time three alternative ecophysiological model classes (threshold models, heat-sum models and chilling-influenced heat-sum models) and an empirical model in their ability to predict the starting date of xylem cell enlargement in spring, for four major Northern Hemisphere conifers (Larix decidua, Pinus sylvestris, Picea abies and Picea mariana). We fitted models with Bayesian inference to wood phenological data collected for 220 site-years over Europe and Canada. The chilling-influenced heat-sum model received most support for all the four studied species, predicting validation data with a 7.7-day error, which is within one day of the observed data resolution. We conclude that both chilling and forcing temperatures determine the onset of wood formation in Northern Hemisphere conifers. Importantly, the chilling-influenced heat-sum model showed virtually no spatial bias whichever the species, despite the large environmental gradients considered. This suggests that the spring onset of wood formation is far less affected by local adaptation than by environmentally driven plasticity. In a context of climate change, we therefore expect rising winter-spring temperature to exert ambivalent effects on the spring onset of wood formation, tending to hasten it through the accumulation of forcing temperature, but imposing a higher forcing temperature requirement through the lower accumulation of chilling.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10511 - Environmental sciences (social aspects to be 5.7)

Result continuities

  • Project

    <a href="/en/project/EE2.3.20.0265" target="_blank" >EE2.3.20.0265: Indicators of trees vitality</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Global Change Biology

  • ISSN

    1354-1013

  • e-ISSN

  • Volume of the periodical

    25

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    17

  • Pages from-to

    1089-1105

  • UT code for WoS article

    000459456700025

  • EID of the result in the Scopus database

    2-s2.0-85059552892