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

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>

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

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Type

J_imp - 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)

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)

Publication year

2019

Confidentiality

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

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