Article (Scientific journals)
Number of growth days and not length of the growth period determines radial stem growth of temperate trees.
Etzold, Sophia; Sterck, Frank; Bose, Arun K. et al.
2021In Ecology Letters
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Keywords :
TreeNet; dendrometer; intra-annual growth; phenology; seasonality; soil water potential; tree growth; vapour pressure deficit
Abstract :
[en] Radial stem growth dynamics at seasonal resolution are essential to understand how forests respond to climate change. We studied daily radial growth of 160 individuals of seven temperate tree species at 47 sites across Switzerland over 8 years. Growth of all species peaked in the early part of the growth season and commenced shortly before the summer solstice, but with species-specific seasonal patterns. Day length set a window of opportunity for radial growth. Within this window, the probability of daily growth was constrained particularly by air and soil moisture, resulting in intermittent growth to occur only on 29 to 77 days (30% to 80%) within the growth period. The number of days with growth largely determined annual growth, whereas the growth period length contributed less. We call for accounting for these non-linear intra-annual and species-specific growth dynamics in tree and forest models to reduce uncertainties in predictions under climate change.
Disciplines :
Agriculture & agronomy
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Etzold, Sophia
Sterck, Frank
Bose, Arun K.
Braun, Sabine
Buchmann, Nina
Eugster, Werner
Gessler, Arthur
Kahmen, Ansgar
Peters, Richard ;  Université de Liège - ULiège > Département GxABT > Gestion des ressources forestières et des milieux naturels
Vitasse, Yann
Walthert, Lorenz
Ziemińska, Kasia
Zweifel, Roman
More authors (3 more) Less
Language :
English
Title :
Number of growth days and not length of the growth period determines radial stem growth of temperate trees.
Publication date :
2021
Journal title :
Ecology Letters
ISSN :
1461-023X
eISSN :
1461-0248
Publisher :
Wiley, Oxford, United Kingdom
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Ecology Letters© 2021 The Authors. Ecology Letters published by John Wiley & Sons Ltd.
Available on ORBi :
since 22 December 2021

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