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The 2018 European heatwave led to stem dehydration but not to consistent growth reductions in forests

Salomón, Roberto L. ; Edvardsson, Johannes LU and Steppe, Kathy (2022) In Nat. Commun. 13(1).
Abstract
Heatwaves exert disproportionately strong and sometimes irreversible impacts on forest ecosystems. These impacts remain poorly understood at the tree and species level and across large spatial scales. Here, we investigate the effects of the record-breaking 2018 European heatwave on tree growth and tree water status using a collection of high-temporal resolution dendrometer data from 21 species across 53 sites. Relative to the two preceding years, annual stem growth was not consistently reduced by the 2018 heatwave but stems experienced twice the temporary shrinkage due to depletion of water reserves. Conifer species were less capable of rehydrating overnight than broadleaves across gradients of soil and atmospheric drought, suggesting less... (More)
Heatwaves exert disproportionately strong and sometimes irreversible impacts on forest ecosystems. These impacts remain poorly understood at the tree and species level and across large spatial scales. Here, we investigate the effects of the record-breaking 2018 European heatwave on tree growth and tree water status using a collection of high-temporal resolution dendrometer data from 21 species across 53 sites. Relative to the two preceding years, annual stem growth was not consistently reduced by the 2018 heatwave but stems experienced twice the temporary shrinkage due to depletion of water reserves. Conifer species were less capable of rehydrating overnight than broadleaves across gradients of soil and atmospheric drought, suggesting less resilience toward transient stress. In particular, Norway spruce and Scots pine experienced extensive stem dehydration. Our high-resolution dendrometer network was suitable to disentangle the effects of a severe heatwave on tree growth and desiccation at large-spatial scales in situ, and provided insights on which species may be more vulnerable to climate extremes. © 2022, The Author(s). (Less)
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author
; and
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Climate, Climate Change, Dehydration, Droughts, Ecology, Ecosystem, Forests, Infrared Rays, Norway, Picea, Pinus sylvestris, Soil, Trees, Water, Europe, water, coniferous tree, dehydration, drought, extreme event, forest ecosystem, growth rate, heat wave, instrumentation, reforestation, shrinkage, temporal analysis, climate, climate change, ecology, ecosystem, forest, infrared radiation, Scots pine, soil, spruce, tree
in
Nat. Commun.
volume
13
issue
1
article number
28
publisher
Nature Publishing Group
external identifiers
  • scopus:85122871007
  • pmid:35013178
ISSN
2041-1723
DOI
10.1038/s41467-021-27579-9
language
English
LU publication?
yes
id
0a562b8a-3e8f-43ec-99cb-cab998dedf44
date added to LUP
2022-02-18 11:30:17
date last changed
2025-04-04 14:49:12
@article{0a562b8a-3e8f-43ec-99cb-cab998dedf44,
  abstract     = {{Heatwaves exert disproportionately strong and sometimes irreversible impacts on forest ecosystems. These impacts remain poorly understood at the tree and species level and across large spatial scales. Here, we investigate the effects of the record-breaking 2018 European heatwave on tree growth and tree water status using a collection of high-temporal resolution dendrometer data from 21 species across 53 sites. Relative to the two preceding years, annual stem growth was not consistently reduced by the 2018 heatwave but stems experienced twice the temporary shrinkage due to depletion of water reserves. Conifer species were less capable of rehydrating overnight than broadleaves across gradients of soil and atmospheric drought, suggesting less resilience toward transient stress. In particular, Norway spruce and Scots pine experienced extensive stem dehydration. Our high-resolution dendrometer network was suitable to disentangle the effects of a severe heatwave on tree growth and desiccation at large-spatial scales in situ, and provided insights on which species may be more vulnerable to climate extremes. © 2022, The Author(s).}},
  author       = {{Salomón, Roberto L. and Edvardsson, Johannes and Steppe, Kathy}},
  issn         = {{2041-1723}},
  keywords     = {{Climate; Climate Change; Dehydration; Droughts; Ecology; Ecosystem; Forests; Infrared Rays; Norway; Picea; Pinus sylvestris; Soil; Trees; Water; Europe; water; coniferous tree; dehydration; drought; extreme event; forest ecosystem; growth rate; heat wave; instrumentation; reforestation; shrinkage; temporal analysis; climate; climate change; ecology; ecosystem; forest; infrared radiation; Scots pine; soil; spruce; tree}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Nat. Commun.}},
  title        = {{The 2018 European heatwave led to stem dehydration but not to consistent growth reductions in forests}},
  url          = {{http://dx.doi.org/10.1038/s41467-021-27579-9}},
  doi          = {{10.1038/s41467-021-27579-9}},
  volume       = {{13}},
  year         = {{2022}},
}