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

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • DendroDrought - (Author)
  • Ernst van der Maaten - , Chair of Forest Growth and Woody Biomass Production (Author)
  • Francois Lebourgeois - (Author)
  • Martin Mikoláš - (Author)
  • Radim Matula - (Author)
  • Stefan Mayr - (Author)
  • Walter Oberhuber - (Author)
  • Nikolaus Obojes - (Author)
  • Bruce Osborne - (Author)
  • Teemu Paljakka - (Author)
  • Roman Plichta - (Author)
  • Inken Rabbel - (Author)
  • Cyrille B. K. Rathgeber - (Author)
  • Yann Salmon - (Author)
  • Matthew Saunders - (Author)
  • Tobias Scharnweber - (Author)
  • Zuzana Sitková - (Author)
  • Dominik Florian Stangler - (Author)
  • Krzystof Sterenczak - (Author)
  • Marko Stojanovic - (Author)
  • Katarína Strelcová - (Author)
  • Jan Svetlík - (Author)
  • Miroslav Svoboda - (Author)
  • Brian Tobin - (Author)
  • Volodymyr Trotsiuk - (Author)
  • Josef Urban - (Author)
  • Fernando Valladares - (Author)
  • Hanus Vavrcik - (Author)
  • Monika Vejpustková - (Author)
  • Lorenz Walthert - (Author)
  • Martin Wilmking - (Author)
  • Ewa Zin - (Author)
  • Junliang Zou - (Author)
  • Kathy Steppe - (Author)

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.

Details

Original languageEnglish
Article number28
Pages (from-to)28
JournalNature communications
Volume13
Issue number1
Publication statusPublished - 1 Dec 2022
Peer-reviewedYes

External IDs

Scopus 85122871007
PubMed 35013178
Mendeley 45180419-5349-3c98-bbd3-d475f34def3c
unpaywall 10.1038/s41467-021-27579-9
WOS 000885536100001

Keywords

Sustainable Development Goals

Keywords

  • Climate, Climate Change, Dehydration, Droughts, Ecology, Ecosystem, Forests, Infrared Rays, Norway, Picea, Pinus sylvestris, Soil, Trees, Water, TREE WATER-DEFICIT, CARBON, DROUGHT, RESPONSES, SAP FLOW, TEMPERATURE, HYDRAULIC SAFETY MARGINS, PRODUCTIVITY, SUMMER, ECOSYSTEMS