Woody plants optimise stomatal behaviour relative to hydraulic risk

William R.L. Anderegg, Adam Wolf, Adriana Arango-Velez, Brendan Choat, Daniel J. Chmura, Steven Jansen, Thomas E Kolb, Shan Li, Frederick C. Meinzer, Pilar Pita, Víctor Resco de Dios, John S. Sperry, Brett T. Wolfe, Stephen Pacala

Research output: Contribution to journalLetter

18 Citations (Scopus)

Abstract

Stomatal response to environmental conditions forms the backbone of all ecosystem and carbon cycle models, but is largely based on empirical relationships. Evolutionary theories of stomatal behaviour are critical for guarding against prediction errors of empirical models under future climates. Longstanding theory holds that stomata maximise fitness by acting to maintain constant marginal water use efficiency over a given time horizon, but a recent evolutionary theory proposes that stomata instead maximise carbon gain minus carbon costs/risk of hydraulic damage. Using data from 34 species that span global forest biomes, we find that the recent carbon-maximisation optimisation theory is widely supported, revealing that the evolution of stomatal regulation has not been primarily driven by attainment of constant marginal water use efficiency. Optimal control of stomata to manage hydraulic risk is likely to have significant consequences for ecosystem fluxes during drought, which is critical given projected intensification of the global hydrological cycle.

Original languageEnglish (US)
Pages (from-to)968-977
Number of pages10
JournalEcology Letters
Volume21
Issue number7
DOIs
StatePublished - Jul 1 2018

Fingerprint

stomata
woody plant
woody plants
fluid mechanics
evolutionary theory
water use efficiency
hydraulics
ecosystems
carbon
ecosystem
hydrologic cycle
hydrological cycle
biome
carbon cycle
fitness
drought
environmental conditions
climate
damage
environmental factors

Keywords

  • climate change
  • drought
  • extreme events
  • plant hydraulics
  • vegetation model

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Anderegg, W. R. L., Wolf, A., Arango-Velez, A., Choat, B., Chmura, D. J., Jansen, S., ... Pacala, S. (2018). Woody plants optimise stomatal behaviour relative to hydraulic risk. Ecology Letters, 21(7), 968-977. https://doi.org/10.1111/ele.12962

Woody plants optimise stomatal behaviour relative to hydraulic risk. / Anderegg, William R.L.; Wolf, Adam; Arango-Velez, Adriana; Choat, Brendan; Chmura, Daniel J.; Jansen, Steven; Kolb, Thomas E; Li, Shan; Meinzer, Frederick C.; Pita, Pilar; Resco de Dios, Víctor; Sperry, John S.; Wolfe, Brett T.; Pacala, Stephen.

In: Ecology Letters, Vol. 21, No. 7, 01.07.2018, p. 968-977.

Research output: Contribution to journalLetter

Anderegg, WRL, Wolf, A, Arango-Velez, A, Choat, B, Chmura, DJ, Jansen, S, Kolb, TE, Li, S, Meinzer, FC, Pita, P, Resco de Dios, V, Sperry, JS, Wolfe, BT & Pacala, S 2018, 'Woody plants optimise stomatal behaviour relative to hydraulic risk', Ecology Letters, vol. 21, no. 7, pp. 968-977. https://doi.org/10.1111/ele.12962
Anderegg WRL, Wolf A, Arango-Velez A, Choat B, Chmura DJ, Jansen S et al. Woody plants optimise stomatal behaviour relative to hydraulic risk. Ecology Letters. 2018 Jul 1;21(7):968-977. https://doi.org/10.1111/ele.12962
Anderegg, William R.L. ; Wolf, Adam ; Arango-Velez, Adriana ; Choat, Brendan ; Chmura, Daniel J. ; Jansen, Steven ; Kolb, Thomas E ; Li, Shan ; Meinzer, Frederick C. ; Pita, Pilar ; Resco de Dios, Víctor ; Sperry, John S. ; Wolfe, Brett T. ; Pacala, Stephen. / Woody plants optimise stomatal behaviour relative to hydraulic risk. In: Ecology Letters. 2018 ; Vol. 21, No. 7. pp. 968-977.
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