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Title: Climate Change Risks to Global Forest Health: Emergence of Unexpected Events of Elevated Tree Mortality Worldwide

Journal Article · · Annual Review of Plant Biology
 [1];  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10]
  1. Max Planck Institute for Biogeochemistry, Jena (Germany)
  2. US Geological Survey, CA (United States); Western Ecological Research Center, Oakhurst, CA; Sequoia and Kings Canyon Field Station, Three Rivers, CA (United States)
  3. Univ. of Birmingham (United Kingdom)
  4. Univ. of Florida, Gainesville, FL (United States)
  5. Univ. Autonoma de Barcelona (CREAF), Bellaterra, Catalonia (Spain)
  6. Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Washington State Univ., Pullman, WA (United States)
  7. Univ. of Minnesota, St. Paul, MN (United States)
  8. Univ. of Birmingham (United Kingdom); Lund Univ. (Sweden)
  9. Department of Biodiversity, Conservation and Attractions, Kensington, WA (Australia); Murdoch Univ., WA (Australia)
  10. Univ. of New Mexico, Albuquerque, NM (United States)

Recent observations of elevated tree mortality following climate extremes, like heat and drought, raise concerns about climate change risks to global forest health. We currently lack both sufficient data and understanding to identify whether these observations represent a global trend toward increasing tree mortality. In this work, we document events of sudden and unexpected elevated tree mortality following heat and drought events in ecosystems that previously were considered tolerant or not at risk of exposure. These events underscore the fact that climate change may affect forests with unexpected force in the future. We use the events as examples to highlight current difficulties and challenges for realistically predicting such tree mortality events and the uncertainties about future forest condition. Advances in remote sensing technology and greater availably of high-resolution data, from both field assessments and satellites, are needed to improve both understanding and prediction of forest responses to future climate change.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE; European Research Council (ERC); USGS
Grant/Contract Number:
AC05-76RL01830; 758873
OSTI ID:
1876701
Report Number(s):
PNNL-SA-169943
Journal Information:
Annual Review of Plant Biology, Vol. 73, Issue 1; ISSN 1543-5008
Publisher:
Annual ReviewsCopyright Statement
Country of Publication:
United States
Language:
English

References (137)

Storm and fire disturbances in Europe: Distribution and trends journal May 2021
A catastrophic tropical drought kills hydraulically vulnerable tree species journal March 2020
Amazon forest response to repeated droughts: AMAZON FOREST RESPONSE TO DROUGHTS journal July 2016
Cross-scale Drivers of Natural Disturbances Prone to Anthropogenic Amplification: The Dynamics of Bark Beetle Eruptions journal June 2008
Tree mode of death and mortality risk factors across Amazon forests journal November 2020
Long-term collapse in fruit availability threatens Central African forest megafauna journal December 2020
Above‐ground net primary productivity in regenerating seasonally dry tropical forest: Contributions of rainfall, forest age and soil journal September 2021
Ecosystem dynamics and management after forest die-off: a global synthesis with conceptual state-and-transition models journal December 2017
Assessing regional drought impacts on vegetation and evapotranspiration: a case study in Guanacaste, Costa Rica journal January 2019
The European 2016/17 Drought journal June 2019
Research frontiers in drought-induced tree mortality: crossing scales and disciplines journal January 2015
Understanding the uncertainty in global forest carbon turnover journal January 2020
Mortality Rates of 205 Neotropical Tree and Shrub Species and the Impact of a Severe Drought journal February 1995
Modelling tropical forest responses to drought and El Niño with a stomatal optimization model based on xylem hydraulics journal October 2018
Mesoscale Disturbance and Ecological Response to Decadal Climatic Variability in the American Southwest journal December 1998
Why is Tree Drought Mortality so Hard to Predict? journal June 2021
Confronting model predictions of carbon fluxes with measurements of Amazon forests subjected to experimental drought journal July 2013
Vulnerability of Xylem to Cavitation and Embolism journal June 1989
The interdependence of mechanisms underlying climate-driven vegetation mortality journal October 2011
Bark Beetle Population Dynamics in the Anthropocene: Challenges and Solutions journal October 2019
Wildfire-Driven Forest Conversion in Western North American Landscapes journal July 2020
Benchmarking and parameter sensitivity of physiological and vegetation dynamics using the Functionally Assembled Terrestrial Ecosystem Simulator (FATES) at Barro Colorado Island, Panama journal January 2020
TerraClimate, a high-resolution global dataset of monthly climate and climatic water balance from 1958–2015 journal January 2018
Remote sensing detection of droughts in Amazonian forest canopies journal July 2010
Spatio-temporal water dynamics in mature Banksia menziesii trees during drought journal March 2014
Palms and trees resist extreme drought in Amazon forests with shallow water tables journal March 2020
The Role of Forest Tent Caterpillar Defoliations and Partial Harvest in the Decline and Death of Sugar Maple journal July 2008
Drought-mortality relationships for tropical forests journal July 2010
An international network to monitor the structure, composition and dynamics of Amazonian forests (RAINFOR) journal February 2002
Integrating the evidence for a terrestrial carbon sink caused by increasing atmospheric CO 2 journal October 2020
Effects of an Introduced Pathogen and fire Exclusion on the Demography of Sugar pine journal October 2004
Tree mortality from drought, insects, and their interactions in a changing climate journal June 2015
Remotely sensed predictors of conifer tree mortality during severe drought journal November 2017
A multi-species synthesis of physiological mechanisms in drought-induced tree mortality journal August 2017
Classifying drivers of global forest loss journal September 2018
Structural overshoot of tree growth with climate variability and the global spectrum of drought‐induced forest dieback journal March 2017
One Century of Forest Monitoring Data in Switzerland Reveals Species- and Site-Specific Trends of Climate-Induced Tree Mortality journal March 2019
Tree defence and bark beetles in a drying world: carbon partitioning, functioning and modelling journal September 2019
Synergistic effects of past historical logging and drought on the decline of Pyrenean silver fir forests journal September 2011
To what extent can rising [CO 2 ] ameliorate plant drought stress? journal July 2021
A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests journal February 2010
Vulnerability of European ecosystems to two compound dry and hot summers in 2018 and 2019 journal January 2021
Interval squeeze: altered fire regimes and demographic responses interact to threaten woody species persistence as climate changes journal June 2015
Impact of recent climatic change on growth of low elevation eastern Mediterranean forest trees journal August 2010
Evaluation of the terrestrial carbon cycle, future plant geography and climate-carbon cycle feedbacks using five Dynamic Global Vegetation Models (DGVMs) journal September 2008
Analysis of the temperature dependent development of the spruce bark beetle Ips typographus (L) (Col., Scolytidae) journal January 1998
Greater focus on water pools may improve our ability to understand and anticipate drought‐induced mortality in plants journal January 2019
How unusual is the 2012-2014 California drought?: GRIFFIN AND ANCHUKAITIS journal December 2014
Interacting effects of changes in climate and forest cover on mortality and growth of the southernmost European fir forests journal July 2009
Patterns of Forest Decline and Regeneration Across Scots Pine Populations journal December 2012
Tree Mortality in blue oak Woodland During Extreme Drought in Sequoia National Park, California journal October 2019
Dilution effect of plant diversity on infectious diseases: latitudinal trend and biological context dependence journal February 2020
Amazonian rainforest tree mortality driven by climate and functional traits journal April 2019
A Dynamic Model for Strategies and Dynamics of Plant Water-Potential Regulation Under Drought Conditions journal April 2020
Challenges for drought assessment in the Mediterranean region under future climate scenarios journal November 2020
How do herbivorous insects respond to drought stress in trees? journal November 2019
What mediates tree mortality during drought in the southern Sierra Nevada? journal November 2017
Growing stock monitoring by European National Forest Inventories: Historical origins, current methods and harmonisation journal February 2022
Linking hydraulic traits to tropical forest function in a size-structured and trait-driven model (TFS v.1-Hydro) journal January 2016
Updated high-resolution grids of monthly climatic observations - the CRU TS3.10 Dataset: UPDATED HIGH-RESOLUTION GRIDS OF MONTHLY CLIMATIC OBSERVATIONS journal May 2013
Global satellite monitoring of climate-induced vegetation disturbances journal February 2015
Implementing Plant Hydraulics in the Community Land Model, Version 5 journal February 2019
Change in hydraulic properties and leaf traits in a tall rainforest tree species subjected to long-term throughfall exclusion in the perhumid tropics journal January 2011
Drought-Induced Multifactor Decline of Scots Pine in the Pyrenees and Potential Vegetation Change by the Expansion of Co-occurring Oak Species journal August 2010
Patterns and mechanisms of spatial variation in tropical forest productivity, woody residence time, and biomass journal December 2020
Global field observations of tree die-off reveal hotter-drought fingerprint for Earth’s forests journal April 2022
Pervasive shifts in forest dynamics in a changing world journal May 2020
Elevated CO2 enhances leaf senescence during extreme drought in a temperate forest journal February 2011
Simulating interactions between topography, permafrost, and vegetation in Siberian larch forest journal September 2020
Decreasing Net Primary Production in forest and shrub vegetation across southwest Australia journal July 2016
Temperature as a potent driver of regional forest drought stress and tree mortality journal September 2012
The response of photosynthesis and stomatal conductance to rising [CO 2 ]: mechanisms and environmental interactions : Photosynthesis and stomatal conductance responses to rising [CO journal January 2007
Comparing global models of terrestrial net primary productivity (NPP): overview and key results journal April 1999
Key findings from the Indian Ocean Climate Initiative and their impact on policy development in Australia journal February 2008
Do water-limiting conditions predispose Norway spruce to bark beetle attack? journal November 2014
The el NiñO Southern Oscillation, Variable Fruit Production, and Famine in a Tropical Forest journal July 1999
Natural enemies govern ecosystem resilience in the face of extreme droughts journal January 2017
Global patterns and drivers of tree diversity integrated across a continuum of spatial grains journal February 2019
On the factors that promote the diversity of herbivorous insects and plants in tropical forests journal April 2015
The role of Stress in the Mortality of Midwestern oaks as Indicated by Growth Prior to Death journal January 1998
Spatial heterogeneity of biomass and forest structure of the Amazon rain forest: Linking remote sensing, forest modelling and field inventory journal September 2017
Hydraulic diversity of forests regulates ecosystem resilience during drought journal September 2018
Drought-induced shift of a forest-woodland ecotone: Rapid landscape response to climate variation journal December 1998
Abrupt increases in Amazonian tree mortality due to drought-fire interactions journal April 2014
Resilience of Amazon forests emerges from plant trait diversity journal August 2016
Compositional response of Amazon forests to climate change journal November 2018
Limits to Ponderosa Pine Regeneration following Large High-Severity Forest Fires in the United States Southwest journal February 2018
Plant and environmental factors associated with drought-induced mortality in two facultative phreatophytic trees journal February 2016
Which trees die during drought? The key role of insect host‐tree selection journal April 2019
Climate change drives tree mortality journal November 2018
Changes in structure of over- and midstory tree species in a Mediterranean-type forest after an extreme drought-associated heatwave: Forest structure response to drought and heatwave journal September 2019
Robust Ecosystem Demography (RED version 1.0): a parsimonious approach to modelling vegetation dynamics in Earth system models journal January 2020
Landscape-scale assessment of tree crown dieback following extreme drought and heat in a Mediterranean eucalypt forest ecosystem journal November 2012
Understanding the temporal dimension of the red-edge spectral region for forest decline detection using high-resolution hyperspectral and Sentinel-2a imagery journal March 2018
Drought-induced shifts in the floristic and functional composition of tropical forests in Ghana journal July 2012
Evidence for a Time‐Integrated Species‐Area Effect on the Latitudinal Gradient in Tree Diversity journal December 2006
Sudden forest canopy collapse corresponding with extreme drought and heat in a mediterranean-type eucalypt forest in southwestern Australia journal February 2013
Eucalyptus forest shows low structural resistance and resilience to climate change-type drought journal February 2016
Large contribution from anthropogenic warming to an emerging North American megadrought journal April 2020
The Role of Climatic Anomalies and Soil Moisture in the Decline of Drought-Prone Forests journal February 2017
Increasing impacts of extreme droughts on vegetation productivity under climate change journal November 2019
Canopy recovery after drought dieback in holm-oak Mediterranean forests of Catalonia (NE Spain) journal December 2004
Forest and woodland replacement patterns following drought-related mortality journal November 2020
Forest vegetation monitoring and runoff in water supply catchments affected by drying climate conference July 2009
Chronic historical drought legacy exacerbates tree mortality and crown dieback during acute heatwave-compounded drought journal September 2018
Effects of El Niño drought on tree mortality and growth across forest types at different elevations in Borneo journal June 2021
Tree responses to drought journal March 2011
Darcy's law predicts widespread forest mortality under climate warming journal May 2015
Implications of incorporating N cycling and N limitations on primary production in an individual-based dynamic vegetation model journal January 2014
Research frontiers for improving our understanding of drought-induced tree and forest mortality journal February 2018
Monitoring global tree mortality patterns and trends. Report from the VW symposium ‘Crossing scales and disciplines to identify global trends of tree mortality as indicators of forest health’ journal January 2018
Version 4 of the CRU TS monthly high-resolution gridded multivariate climate dataset journal April 2020
Subcontinental heat wave triggers terrestrial and marine, multi-taxa responses journal August 2018
On the key role of droughts in the dynamics of summer fires in Mediterranean Europe journal March 2017
Long-term decline of the Amazon carbon sink journal March 2015
Excess forest mortality is consistently linked to drought across Europe journal December 2020
Applied Historical Ecology: Using the past to Manage for the Future journal November 1999
Seasonal drought limits tree species across the Neotropics journal June 2016
Beyond the extreme: recovery of carbon and water relations in woody plants following heat and drought stress journal May 2019
Disentangling the climatic and biotic factors driving changes in the dynamics of Quercus suber populations across the species‘ latitudinal range journal December 2018
On underestimation of global vulnerability to tree mortality and forest die-off from hotter drought in the Anthropocene journal August 2015
Mechanisms Linking Drought, Hydraulics, Carbon Metabolism, and Vegetation Mortality journal January 2011
Tracking the impacts of El Niño drought and fire in human-modified Amazonian forests journal July 2021
Does the Southern Annular Mode contribute to the persistence of the multidecade-long drought over southwest Western Australia?: NONLINEAR SAM-RAINFALL RELATIONSHIP journal July 2011
Plant responses to rising vapor pressure deficit journal March 2020
Multi-scale predictions of massive conifer mortality due to chronic temperature rise journal December 2015
Compound fire‐drought regimes promote ecosystem transitions in Mediterranean ecosystems journal November 2018
Death from drought in tropical forests is triggered by hydraulics not carbon starvation journal November 2015
Regional vegetation die-off in response to global-change-type drought journal October 2005
Drought-induced mortality and hydraulic architecture in pine populations of the NE Iberian Peninsula journal May 2002
Resistance and resilience to changing climate and fire regime depend on plant functional traits journal September 2014
Mapping forest canopy height globally with spaceborne lidar journal January 2011
Shoot desiccation and hydraulic failure in temperate woody angiosperms during an extreme summer drought journal April 2013
Patterns and correlates of giant sequoia foliage dieback during California’s 2012–2016 hotter drought journal July 2018
Spatial Configuration of Drought Disturbance and Forest Gap Creation across Environmental Gradients journal June 2016
Emergent vulnerability to climate-driven disturbances in European forests journal February 2021
A first assessment of the impact of the extreme 2018 summer drought on Central European forests journal June 2020