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Number of growth days and not length of the growth period determines radial stem growth of temperate trees
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
ID 4638099
Author(s) Etzold, Sophia; Sterck, Frank; Bose, Arun K.; Braun, Sabine; Buchmann, Nina; Eugster, Werner; Gessler, Arthur; Kahmen, Ansgar; Peters, Richard L.; Vitasse, Yann; Walthert, Lorenz; Ziemińska, Kasia; Zweifel, Roman
Author(s) at UniBasel Kahmen, Ansgar
Year 2022
Title Number of growth days and not length of the growth period determines radial stem growth of temperate trees
Journal Ecology letters
Volume 25
Number 2
Pages / Article-Number 427-439
Keywords TreeNet; dendrometer; intra-annual growth; phenology; seasonality; soil water potential; tree growth; vapour pressure deficit
Mesh terms Climate Change; Humans; Seasons; Soil; Species Specificity

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.

ISSN/ISBN 1461-0248
Full Text on edoc No
Digital Object Identifier DOI 10.1111/ele.13933
PubMed ID
ISI-Number WOS:000728760200001
Document type (ISI) Article

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