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Article Dans Une Revue Nature Reviews Earth & Environment Année : 2022

Mechanisms of woody-plant mortality under rising drought, CO2 and vapour pressure deficit

Nate Mcdowell (1) , Gerard Sapes (2) , Alexandria Pivovaroff (1) , Henry Adams (3) , Craig Allen (4) , William Anderegg (5) , Matthias Arend (6) , David Breshears (7) , Tim Brodribb (8) , Brendan Choat (9) , Hervé Cochard (10) , Miquel de Cáceres (11) , Martin de Kauwe (12) , Charlotte Grossiord (13) , William Hammond (14) , Henrik Hartmann (15) , Günter Hoch (6) , Ansgar Kahmen (6) , Tamir Klein (16) , D. Scott Mackay (17) , Marylou Mantova (10) , Jordi Martínez-Vilalta (11) , Belinda Medlyn (9) , Maurizio Mencuccini (11) , Andrea Nardini (18) , Rafael Oliveira (19) , Anna Sala (20) , David Tissue (9) , José Torres-Ruiz (10) , Amy Trowbridge (21) , Anna Trugman (22) , Erin Wiley (23) , Chonggang Xu (24)
1 Pacific Northwest Natl Lab, Richland, WA 99354 USA
2 University of Minnesota System
3 WSU - Washington State University
4 The University of New Mexico [Albuquerque]
5 University of Utah
6 Unibas - Université de Bâle = University of Basel = Basel Universität
7 University of Arizona
8 UTAS - University of Tasmania [Hobart, Australia]
9 Western Sydney University
10 PIAF - Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant
11 CREAF - Centre for Ecological Research and Applied Forestries
12 University of Bristol [Bristol]
13 EPFL - Institut de théorie des phénomènes physiques
14 FAMU - Florida Agricultural and Mechanical University
15 Max-Planck-Institut
16 Weizmann Institute of Science [Rehovot, Israël]
17 SUNY Buffalo - University at Buffalo [SUNY]
18 Università degli studi di Trieste = University of Trieste
19 UNICAMP - Universidade Estadual de Campinas = University of Campinas
20 University of Montana
21 University of Wisconsin-Madison
22 UC Santa Barbara - University of California [Santa Barbara]
23 UCA - University of Central Arkansas
24 LANL - Los Alamos National Laboratory
Nate Mcdowell
Pacific Northwest Natl Lab, Richland, WA 99354 USA
Gerard Sapes
University of Minnesota System
Alexandria Pivovaroff
  • Fonction : Auteur
Pacific Northwest Natl Lab, Richland, WA 99354 USA
Henry Adams
  • Fonction : Auteur
Washington State University
Craig Allen
  • Fonction : Auteur
The University of New Mexico [Albuquerque]
William Anderegg
  • Fonction : Auteur
University of Utah
Matthias Arend
Université de Bâle = University of Basel = Basel Universität
David Breshears
  • Fonction : Auteur
University of Arizona
Tim Brodribb
  • Fonction : Auteur
University of Tasmania [Hobart, Australia]
Brendan Choat
Western Sydney University
Hervé Cochard
  • Fonction : Auteur
Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant
Miquel de Cáceres
CREAF - Centre for Ecological Research and Applied Forestries
Martin de Kauwe
University of Bristol [Bristol]
Charlotte Grossiord
Institut de théorie des phénomènes physiques
William Hammond
Florida Agricultural and Mechanical University
Henrik Hartmann
  • Fonction : Auteur
Max-Planck-Institut
Günter Hoch
  • Fonction : Auteur
Université de Bâle = University of Basel = Basel Universität
Ansgar Kahmen
Université de Bâle = University of Basel = Basel Universität
Tamir Klein
Weizmann Institute of Science [Rehovot, Israël]
D. Scott Mackay
University at Buffalo [SUNY]
Marylou Mantova
  • Fonction : Auteur
Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant
Jordi Martínez-Vilalta
CREAF - Centre for Ecological Research and Applied Forestries
Belinda Medlyn
Western Sydney University
Maurizio Mencuccini
CREAF - Centre for Ecological Research and Applied Forestries
Andrea Nardini
Università degli studi di Trieste = University of Trieste
Rafael Oliveira
Universidade Estadual de Campinas = University of Campinas
Anna Sala
  • Fonction : Auteur
University of Montana
David Tissue
Western Sydney University
José Torres-Ruiz
Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant
CV
Amy Trowbridge
  • Fonction : Auteur
University of Wisconsin-Madison
Anna Trugman
  • Fonction : Auteur
University of California [Santa Barbara]
Erin Wiley
  • Fonction : Auteur
University of Central Arkansas
Chonggang Xu
Los Alamos National Laboratory

Résumé

Drought-associated woody-plant mortality has been increasing in most regions with multi-decadal records and is projected to increase in the future, impacting terrestrial climate forcing, biodiversity and resource availability. The mechanisms underlying such mortality, however, are debated, owing to complex interactions between the drivers and the processes. In this Review, we synthesize knowledge of drought-related tree mortality under a warming and drying atmosphere with rising atmospheric CO2. Drought-associated mortality results from water and carbon depletion and declines in their fluxes relative to demand by living tissues. These pools and fluxes are interdependent and underlay plant defences against biotic agents. Death via failure to maintain a positive water balance is particularly dependent on soil-to-root conductance, capacitance, vulnerability to hydraulic failure, cuticular water losses and dehydration tolerance, all of which could be exacerbated by reduced carbon supply rates to support cellular survival or the carbon starvation process. The depletion of plant water and carbon pools is accelerated under rising vapour pressure deficit, but increasing CO2 can mitigate these impacts. Advancing knowledge and reducing predictive uncertainties requires the integration of carbon, water and defensive processes, and the use of a range of experimental and modelling approaches. Enhanced drought frequency and magnitude have impacted tree mortality, leading to multiple examples of regional-scale dieback. This Review outlines the mechanisms leading to mortality, including carbon starvation and hydraulic failure.

Domaines

Biologie végétale Ecologie, Environnement

Marylou Mantova  : Connectez-vous pour contacter le contributeur

https://hal.inrae.fr/hal-03637531

Soumis le : lundi 11 avril 2022-16:51:15

Dernière modification le : vendredi 22 mars 2024-16:06:07

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Dates et versions

hal-03637531 , version 1 (11-04-2022)

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Citer

Nate Mcdowell, Gerard Sapes, Alexandria Pivovaroff, Henry Adams, Craig Allen, et al.. Mechanisms of woody-plant mortality under rising drought, CO2 and vapour pressure deficit. Nature Reviews Earth & Environment, 2022, 15 p. ⟨10.1038/s43017-022-00272-1⟩. ⟨hal-03637531⟩

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