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

Roberto L. Salomón, Richard L. Peters, Roman Zweifel, Ute G. W. Sass-Klaassen (), Annemiek I. Stegehuis, Marko Smiljanic, Rafael Poyatos, Flurin Babst, Emil Cienciala, Patrick Fonti, Bas J. W. Lerink, Marcus Lindner, Jordi Martinez-Vilalta, Maurizio Mencuccini, Gert-Jan Nabuurs, Ernst Maaten, Georg Arx, Andreas Bär, Linar Akhmetzyanov, Daniel Balanzategui, Michal Bellan, Jörg Bendix, Daniel Berveiller, Miroslav Blaženec, Vojtěch Čada, Vinicio Carraro, Sébastien Cecchini, Tommy Chan, Marco Conedera, Nicolas Delpierre, Sylvain Delzon, Ľubica Ditmarová, Jiri Dolezal, Eric Dufrêne, Johannes Edvardsson, Stefan Ehekircher, Alicia Forner, Jan Frouz, Andrea Ganthaler, Vladimír Gryc, Aylin Güney, Ingo Heinrich, Rainer Hentschel, Pavel Janda, Marek Ježík, Hans-Peter Kahle, Simon Knüsel, Jan Krejza, Łukasz Kuberski, Jiří Kučera, François Lebourgeois, Martin Mikoláš, Radim Matula, Stefan Mayr, Walter Oberhuber, Nikolaus Obojes, Bruce Osborne, Teemu Paljakka, Roman Plichta, Inken Rabbel, Cyrille B. K. Rathgeber, Yann Salmon, Matthew Saunders, Tobias Scharnweber, Zuzana Sitková, Dominik Florian Stangler, Krzysztof Stereńczak, Marko Stojanović, Katarína Střelcová, Jan Světlík, Miroslav Svoboda, Brian Tobin, Volodymyr Trotsiuk, Josef Urban, Fernando Valladares, Hanuš Vavrčík, Monika Vejpustková, Lorenz Walthert, Martin Wilmking, Ewa Zin, Junliang Zou and Kathy Steppe ()
Additional contact information
Roberto L. Salomón: Ghent University
Richard L. Peters: Ghent University
Roman Zweifel: Swiss Federal Institute for Forest Snow and Landscape Research WSL
Ute G. W. Sass-Klaassen: Wageningen University and Research
Annemiek I. Stegehuis: Resilience Programme
Marko Smiljanic: University Greifswald
Rafael Poyatos: CREAF
Flurin Babst: University of Arizona
Emil Cienciala: IFER—Institute of Forest Ecosystem Research
Patrick Fonti: Swiss Federal Institute for Forest Snow and Landscape Research WSL
Bas J. W. Lerink: Wageningen University and Research
Marcus Lindner: Resilience Programme
Jordi Martinez-Vilalta: CREAF
Maurizio Mencuccini: CREAF
Gert-Jan Nabuurs: Wageningen University and Research
Ernst Maaten: Chair of Forest Growth and Woody Biomass Production, TU Dresden
Georg Arx: Swiss Federal Institute for Forest Snow and Landscape Research WSL
Andreas Bär: University of Innsbruck
Linar Akhmetzyanov: Wageningen University and Research
Daniel Balanzategui: GFZ German Research Centre for Geosciences
Michal Bellan: Global Change Research Institute of the Czech Academy of Sciences
Jörg Bendix: Faculty of Geography
Daniel Berveiller: Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique et Evolution
Miroslav Blaženec: Slovak Academy of Sciences
Vojtěch Čada: Czech University of Life Sciences Prague, 165 00
Vinicio Carraro: University of Padua
Sébastien Cecchini: Office National des Forêts, Département Recherche Développement et Innovation
Tommy Chan: University of Helsinki
Marco Conedera: Swiss Federal Research Institute WSL, Insubric Ecosystems Research Group
Nicolas Delpierre: Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique et Evolution
Sylvain Delzon: Universite de Bordeaux, INRAE, BIOGECO
Ľubica Ditmarová: Slovak Academy of Sciences
Jiri Dolezal: Institute of Botany of the Czech Academy of Sciences
Eric Dufrêne: Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique et Evolution
Johannes Edvardsson: Lund University
Stefan Ehekircher: University of Hohenheim
Alicia Forner: Centro de Investigaciones sobre Desertificación (CIDE-CSIC)
Jan Frouz: Charles University
Andrea Ganthaler: University of Innsbruck
Vladimír Gryc: Mendel University in Brno
Aylin Güney: Izmir Katip Çelebi University, Faculty of Forestry
Ingo Heinrich: GFZ German Research Centre for Geosciences
Rainer Hentschel: Brandenburg State Forestry Center of Excellence
Pavel Janda: Czech University of Life Sciences Prague, 165 00
Marek Ježík: Slovak Academy of Sciences
Hans-Peter Kahle: University of Freiburg
Simon Knüsel: Swiss Federal Research Institute WSL, Insubric Ecosystems Research Group
Jan Krejza: Global Change Research Institute of the Czech Academy of Sciences
Łukasz Kuberski: Forest Research Institute
Jiří Kučera: Environmental Measuring Systems Ltd.
François Lebourgeois: Université de Lorraine, AgroParisTech, INRAE, SILVA
Martin Mikoláš: Czech University of Life Sciences Prague, 165 00
Radim Matula: Czech University of Life Sciences Prague, 165 00
Stefan Mayr: Université de Lorraine, AgroParisTech, INRAE, SILVA
Walter Oberhuber: Université de Lorraine, AgroParisTech, INRAE, SILVA
Nikolaus Obojes: Institute for Alpine Environment, Eurac Research
Bruce Osborne: University College Dublin
Teemu Paljakka: University of Helsinki
Roman Plichta: Mendel University in Brno
Inken Rabbel: University of Bonn
Cyrille B. K. Rathgeber: Swiss Federal Institute for Forest Snow and Landscape Research WSL
Yann Salmon: University of Helsinki
Matthew Saunders: Trinity College Dublin, School of Natural Sciences, Botany Department
Tobias Scharnweber: University Greifswald
Zuzana Sitková: Forest Research Institute
Dominik Florian Stangler: University of Freiburg
Krzysztof Stereńczak: Forest Research Institute
Marko Stojanović: Global Change Research Institute of the Czech Academy of Sciences
Katarína Střelcová: Technical University in Zvolen, Faculty of Forestry
Jan Světlík: Global Change Research Institute of the Czech Academy of Sciences
Miroslav Svoboda: Czech University of Life Sciences Prague, 165 00
Brian Tobin: University College Dublin, Belfield
Volodymyr Trotsiuk: Swiss Federal Institute for Forest Snow and Landscape Research WSL
Josef Urban: Mendel University in Brno
Fernando Valladares: CSIC
Hanuš Vavrčík: Mendel University in Brno
Monika Vejpustková: Forestry and Game Management Research Institute
Lorenz Walthert: Swiss Federal Institute for Forest Snow and Landscape Research WSL
Martin Wilmking: University Greifswald
Ewa Zin: Forest Research Institute
Junliang Zou: Beijing Academy of Agriculture and Forestry Sciences
Kathy Steppe: Ghent University

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: 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.

Date: 2022
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DOI: 10.1038/s41467-021-27579-9

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