Tree mortality from drought, insects, and their interactions in a changing climate

William R. L. Anderegg, Jeffrey A. Hicke, Rosie A. Fisher, Craig D. Allen, Juliann Aukema, Barbara Bentz, Sharon Hood, Jeremy W. Lichstein, Alison K. Macalady, Nate Mcdowell, Yude Pan, Kenneth Raffa, Anna Sala, John D. Shaw, Nathan L. Stephenson, Christina Tague, Melanie Zeppel

Research output: Contribution to journalReview articleResearchpeer-review

Abstract

Climate change is expected to drive increased tree mortality through drought, heat stress, and insect attacks, with manifold impacts on forest ecosystems. Yet, climate-induced tree mortality and biotic disturbance agents are largely absent from process-based ecosystem models. Using data sets from the western USA and associated studies, we present a framework for determining the relative contribution of drought stress, insect attack, and their interactions, which is critical for modeling mortality in future climates. We outline a simple approach that identifies the mechanisms associated with two guilds of insects - bark beetles and defoliators - which are responsible for substantial tree mortality. We then discuss cross-biome patterns of insect-driven tree mortality and draw upon available evidence contrasting the prevalence of insect outbreaks in temperate and tropical regions. We conclude with an overview of tools and promising avenues to address major challenges. Ultimately, a multitrophic approach that captures tree physiology, insect populations, and tree-insect interactions will better inform projections of forest ecosystem responses to climate change.

LanguageEnglish
Pages674-683
Number of pages10
JournalNew Phytologist
Volume208
Issue number3
DOIs
Publication statusPublished - 1 Nov 2015

Fingerprint

Droughts
tree mortality
Climate
Insects
drought
climate change
insects
Mortality
Ecosystem
Climate Change
forest ecosystems
tree physiology
climate
ecosystems
Beetles
bark beetles
Disease Outbreaks
heat stress
tropics
water stress

Keywords

  • Biosphere-atmosphere feedbacks
  • Carbon cycle
  • Disturbance
  • Dynamic global vegetation model
  • Trophic interactions

Cite this

Anderegg, W. R. L., Hicke, J. A., Fisher, R. A., Allen, C. D., Aukema, J., Bentz, B., ... Zeppel, M. (2015). Tree mortality from drought, insects, and their interactions in a changing climate. New Phytologist, 208(3), 674-683. https://doi.org/10.1111/nph.13477
Anderegg, William R. L. ; Hicke, Jeffrey A. ; Fisher, Rosie A. ; Allen, Craig D. ; Aukema, Juliann ; Bentz, Barbara ; Hood, Sharon ; Lichstein, Jeremy W. ; Macalady, Alison K. ; Mcdowell, Nate ; Pan, Yude ; Raffa, Kenneth ; Sala, Anna ; Shaw, John D. ; Stephenson, Nathan L. ; Tague, Christina ; Zeppel, Melanie. / Tree mortality from drought, insects, and their interactions in a changing climate. In: New Phytologist. 2015 ; Vol. 208, No. 3. pp. 674-683.
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Anderegg, WRL, Hicke, JA, Fisher, RA, Allen, CD, Aukema, J, Bentz, B, Hood, S, Lichstein, JW, Macalady, AK, Mcdowell, N, Pan, Y, Raffa, K, Sala, A, Shaw, JD, Stephenson, NL, Tague, C & Zeppel, M 2015, 'Tree mortality from drought, insects, and their interactions in a changing climate', New Phytologist, vol. 208, no. 3, pp. 674-683. https://doi.org/10.1111/nph.13477

Tree mortality from drought, insects, and their interactions in a changing climate. / Anderegg, William R. L.; Hicke, Jeffrey A.; Fisher, Rosie A.; Allen, Craig D.; Aukema, Juliann; Bentz, Barbara; Hood, Sharon; Lichstein, Jeremy W.; Macalady, Alison K.; Mcdowell, Nate; Pan, Yude; Raffa, Kenneth; Sala, Anna; Shaw, John D.; Stephenson, Nathan L.; Tague, Christina; Zeppel, Melanie.

In: New Phytologist, Vol. 208, No. 3, 01.11.2015, p. 674-683.

Research output: Contribution to journalReview articleResearchpeer-review

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AU - Anderegg, William R. L.

AU - Hicke, Jeffrey A.

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AU - Bentz, Barbara

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AU - Pan, Yude

AU - Raffa, Kenneth

AU - Sala, Anna

AU - Shaw, John D.

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AU - Tague, Christina

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Anderegg WRL, Hicke JA, Fisher RA, Allen CD, Aukema J, Bentz B et al. Tree mortality from drought, insects, and their interactions in a changing climate. New Phytologist. 2015 Nov 1;208(3):674-683. https://doi.org/10.1111/nph.13477