128903 - Triggers of tree mortality under drought.pdf (3.54 MB)
Triggers of tree mortality under drought
journal contributionposted 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.
Australian Research Council
Department/SchoolSchool of Natural Sciences
PublisherNature Publishing Group
Place of publicationMacmillan Building, 4 Crinan St, London, England, N1 9Xw
Rights statement© 2018 Macmillan Publishers Limited, part of Springer Nature.
Socio-economic ObjectivesTerrestrial systems and management not elsewhere classified; Climate change adaptation measures (excl. ecosystem)