2022
DOI: 10.21203/rs.3.rs-1832864/v1
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Growth plasticity of Gymnosperm trees did not avoid declining resilience to soil and atmospheric droughts during the 20th century

Abstract: Plasticity in response to environmental drivers can help trees cope with droughts. However, our understanding of the importance of plasticity and physiological adjustments in trees under global change is limited. We examine 20th century growth responses in Gymnosperm trees during (resistance) and following (resilience) years of severe soil and atmospheric droughts occurring in isolation or as compound events. We use high atmospheric vapour pressure deficit (VPD) to select years of atmospheric drought and negat… Show more

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Cited by 1 publication
(2 citation statements)
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“…Despite mathematical connection between growth variability, autocorrelation, and resilience, these metrics were only weakly correlated, suggesting that they encoded different signals. Decline in tree growth resilience to drought has been previously reported at the local scale (Gazol et al, 2018) and across temperate and boreal forests (Zheng et al, 2021(Zheng et al, , 2023. The decline observed here was primarily a result of decreasing resistance, which was not compensated for by increasing recovery (Figure 2).…”
Section: Historic Decline Of Tree Growth Resilience To Droughtsupporting
confidence: 68%
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“…Despite mathematical connection between growth variability, autocorrelation, and resilience, these metrics were only weakly correlated, suggesting that they encoded different signals. Decline in tree growth resilience to drought has been previously reported at the local scale (Gazol et al, 2018) and across temperate and boreal forests (Zheng et al, 2021(Zheng et al, , 2023. The decline observed here was primarily a result of decreasing resistance, which was not compensated for by increasing recovery (Figure 2).…”
Section: Historic Decline Of Tree Growth Resilience To Droughtsupporting
confidence: 68%
“…Recent syntheses notably show that large tree growth variability-in the case of gymnosperms-and low resilience (Cailleret et al, 2019;DeSoto et al, 2020) are associated with subsequent tree-level mortality, suggesting that these could predict future forest mortality. Implications are vast given observation of widespread declining tree resilience to drought (Forzieri et al, 2022;Zheng et al, 2021Zheng et al, , 2023. Several uncertainties nevertheless remain that hinder the application of EWS to predict forest mortality.…”
mentioning
confidence: 99%