Climate-driven risks to the climate mitigation potential of forests

Science, Journal Year: 2020, Volume and Issue: 368(6497)

Published: June 18, 2020

Risks to mitigation potential of forests Much recent attention has focused on the trees and mitigate ongoing climate change by acting as sinks for carbon. Anderegg et al. review growing evidence that forests' is increasingly at risk from a range adversities limit forest growth health. These include physical factors such drought fire biotic factors, including depredations insect herbivores fungal pathogens. Full assessment quantification these risks, which themselves are influenced climate, key achieving science-based policy outcomes effective land management. Science , this issue p. eaaz7005

Language: Английский

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Excess forest mortality is consistently linked to drought across Europe

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: Dec. 3, 2020

Abstract Pulses of tree mortality caused by drought have been reported recently in forests around the globe, but large-scale quantitative evidence is lacking for Europe. Analyzing high-resolution annual satellite-based canopy maps from 1987 to 2016 we here show that excess forest (i.e., exceeding long-term trend) significantly related across continental The relationship between water availability and showed threshold behavior, with increasing steeply when integrated climatic balance March July fell below −1.6 standard deviations its average. For −3.0 probability was 91.6% (83.8–97.5%). Overall, approximately 500,000 ha We provide an important driver at scale, suggest a future increase could trigger widespread

Language: Английский

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Multi-sensor remote sensing for drought characterization: current status, opportunities and a roadmap for the future

Remote Sensing of Environment, Journal Year: 2021, Volume and Issue: 256, P. 112313 - 112313

Published: Feb. 6, 2021

Language: Английский

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Why is Tree Drought Mortality so Hard to Predict?

Trends in Ecology & Evolution, Journal Year: 2021, Volume and Issue: 36(6), P. 520 - 532

Published: March 2, 2021

Language: Английский

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Quantifying Growth Responses of Trees to Drought—a Critique of Commonly Used Resilience Indices and Recommendations for Future Studies

Current Forestry Reports, Journal Year: 2020, Volume and Issue: 6(3), P. 185 - 200

Published: June 3, 2020

Despite the rapidly increasing use of resilience indices to analyze responses trees and forests disturbance events, there is so far no common framework apply interpret these for different purposes. Therefore, this review aims identify discuss various shortcomings pitfalls commonly used develop recommendations a more robust standardized procedure with particular emphasis on drought events. Growth-based are widely but some important drawbacks limitations related their application may lead spurious results or misinterpretation observed patterns. The include (a) inconsistency regarding selection characterization events climatic conditions in pre- post-drought period (b) calculation growth-based indices. We alternative options metrics, which, when concert, can provide comprehensive understanding cases where likely fail. In addition, we propose new analytical framework, “line full resilience,” that integrates three most show how be comparative tolerance assessments such as rankings tree species treatments. suggested approach could harmonize quantifications growth it thus facilitate systematic reviews development urgently needed evidence base suitable management provenances adapt changing conditions.

Language: Английский

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Tropical tree mortality has increased with rising atmospheric water stress

Nature, Journal Year: 2022, Volume and Issue: 608(7923), P. 528 - 533

Published: May 18, 2022

Language: Английский

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Widespread spring phenology effects on drought recovery of Northern Hemisphere ecosystems

Nature Climate Change, Journal Year: 2023, Volume and Issue: 13(2), P. 182 - 188

Published: Jan. 19, 2023

Abstract The time required for an ecosystem to recover from severe drought is a key component of ecological resilience. phenology effects on recovery are, however, poorly understood. These centre how variations impact biophysical feedbacks, vegetation growth and, ultimately, itself. Using multiple remotely sensed datasets, we found that more than half ecosystems in mid- and high-latitudinal Northern Hemisphere failed extreme droughts within single growing season. Earlier spring the year slowed when occurred mid-growing Delayed subsequent all types (with importance ranging 46% 58%). were comparable or larger other well-known postdrought climatic factors. results strongly suggest interactions between must be incorporated into Earth system models accurately quantify

Language: Английский

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Wood density and hydraulic traits influence species’ growth response to drought across biomes

Global Change Biology, Journal Year: 2022, Volume and Issue: 28(12), P. 3871 - 3882

Published: Feb. 6, 2022

Tree species display a wide variety of water-use strategies, growth rates and capacity to tolerate drought. However, if we want forecast cope with increasing aridity drought, need identify which measurable traits confer resilience drought across species. Here, use global tree ring network (65 species; 1931 site series ring-width indices-RWI) evaluate the relationship long-term growth-drought sensitivity (RWI-SPEI index relationship) short-term response extreme episodes (resistance, recovery indices) functional related leaf, wood hydraulic properties. Furthermore, assess influence climate (temperature, precipitation climatic water deficit) on these trait-growth relationships. We found close correspondence between RWI SPEI resistance severe episodes. Species displaying stronger RWI-SPEI low high tended have higher density (WD) more negative leaf minimum potential (Ψmin). Such associations were largely maintained when accounting for direct effects. Our results indicate that, at cross-species level scale, explain species' responses short- scales. These relationships can improve our understanding withstand change inform models better predict effects forest ecosystem dynamics.

Language: Английский

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Reduced resilience as an early warning signal of forest mortality

Nature Climate Change, Journal Year: 2019, Volume and Issue: 9(11), P. 880 - 885

Published: Oct. 7, 2019

Language: Английский

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Identifying areas at risk of drought‐induced tree mortality across South‐Eastern Australia

Global Change Biology, Journal Year: 2020, Volume and Issue: 26(10), P. 5716 - 5733

Published: June 8, 2020

Abstract South‐East Australia has recently been subjected to two of the worst droughts in historical record (Millennium Drought, 2000–2009 and Big Dry, 2017–2019). Unfortunately, a lack forest monitoring made it difficult determine whether widespread tree mortality resulted from these droughts. Anecdotal observations suggest Dry may have led more significant than Millennium drought. Critically, be able robustly project future expected climate change effects on Australian vegetation, we need assess vulnerability trees Here implemented model plant hydraulics into Community Atmosphere Biosphere Land Exchange (CABLE) land surface model. We parameterized drought response behaviour five broad vegetation types, based common garden dry‐down experiment with species originating across rainfall gradient (188–1,125 mm/year) Australia. The new significantly improved (~35%–45% reduction root mean square error) CABLE’s previous predictions latent heat fluxes during periods water stress at eddy covariance sites Landscape‐scale greatest percentage loss hydraulic conductivity (PLC) about 40%–60%, were broadly consistent satellite estimates regions both In neither did CABLE predict that would reached critical PLC areas (i.e. projected low risk), although highlighted levels near desert where few live. Overall, our experimentally constrained results imply resilience conferred by function, but also highlight data scientific gaps. Our approach presents promising avenue integrate experimental make regional‐scale potential drought‐induced failure.

Language: Английский

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