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128903 - Triggers of tree mortality under drought.pdf (3.54 MB)

Triggers of tree mortality under drought

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posted on 2023-05-19, 22:05 authored by Choat, B, Timothy BrodribbTimothy Brodribb, Brodersen, CR, Duursma, RA, Lopez, R, Medlyn, BE
Severe droughts have caused widespread tree mortality across many forest biomes with profound effects on the function of ecosystems and carbon balance. Climate change is expected to intensify regional-scale droughts, focusing attention on the physiological basis of drought-induced tree mortality. Recent work has shown that catastrophic failure of the plant hydraulic system is a principal mechanism involved in extensive crown death and tree mortality during drought, but the multi-dimensional response of trees to desiccation is complex. Here we focus on the current understanding of tree hydraulic performance under drought, the identification of physiological thresholds that precipitate mortality and the mechanisms of recovery after drought. Building on this, we discuss the potential application of hydraulic thresholds to process-based models that predict mortality.

Funding

Australian Research Council

History

Publication title

Nature

Volume

558

Issue

7711

Pagination

531-539

ISSN

0028-0836

Department/School

School of Natural Sciences

Publisher

Nature Publishing Group

Place of publication

Macmillan Building, 4 Crinan St, London, England, N1 9Xw

Rights statement

© 2018 Macmillan Publishers Limited, part of Springer Nature.

Repository Status

  • Restricted

Socio-economic Objectives

Terrestrial systems and management not elsewhere classified; Climate change adaptation measures (excl. ecosystem)

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