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Larger trees suffer most during drought in forests worldwide


The frequency of severe droughts is increasing in many regions around the world as a result of climate change13. Droughts alter the structure and function of forests4,5. Site- and region-specific studies suggest that large trees, which play keystone roles in forests6 and can be disproportionately important to ecosystem carbon storage7 and hydrology8, exhibit greater sensitivity to drought than small trees4,5,9,10. Here, we synthesize data on tree growth and mortality collected during 40 drought events in forests worldwide to see whether this size-dependent sensitivity to drought holds more widely. We find that droughts consistently had a more detrimental impact on the growth and mortality rates of larger trees. Moreover, drought-related mortality increased with tree size in 65% of the droughts examined, especially when community-wide mortality was high or when bark beetles were present. The more pronounced drought sensitivity of larger trees could be underpinned by greater inherent vulnerability to hydraulic stress1114, the higher radiation and evaporative demand experienced by exposed crowns4,15, and the tendency for bark beetles to preferentially attack larger trees16. We suggest that future droughts will have a more detrimental impact on the growth and mortality of larger trees, potentially exacerbating feedbacks to climate change.

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Figure 1: Global distribution of instances of drought impacts on forests reviewed in this study.
Figure 2: Drought responses of diameter growth rate and mortality rate as a function of tree size.
Figure 3: Size dependence of drought-related mortality and its relationship to community-wide mortality.


  1. IPCC Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) (Cambridge Univ. Press, 2013).

  2. Trenberth, K. E. et al. Global warming and changes in drought. Nature Clim. Change 4, 17–22 (2014).

    Article  Google Scholar 

  3. Settele, J. et al. in Climate Change 2014: Impacts, Adaptation and Vulnerability (eds Stocker, T. F. et al.) Ch. 4 (IPCC, Cambridge Univ. Press, 2014).

    Google Scholar 

  4. Nepstad, D. C., Tohver, I. M., Ray, D., Moutinho, P. & Cardinot, G. Mortality of large trees and lianas following experimental drought in an Amazon forest. Ecology 88, 2259–2269 (2007).

    Article  Google Scholar 

  5. Phillips, O. L. et al. Drought-mortality relationships for tropical forests. New Phytol. 187, 631–646 (2010).

    Article  Google Scholar 

  6. Lindenmayer, D. B., Laurance, W. F. & Franklin, J. F. Global decline in large old trees. Science 338, 1305–1306 (2012).

    Article  CAS  Google Scholar 

  7. Lutz, J. A., Larson, A. J., Swanson, M. E. & Freund, J. A. Ecological importance of large-diameter trees in a temperate mixed-conifer forest. PLoS ONE 7, e36131 (2012).

    Article  CAS  Google Scholar 

  8. Wullschleger, S. D., Hanson, P. & Todd, D. Transpiration from a multi-species deciduous forest as estimated by xylem sap flow techniques. For. Ecol. Manag. 143, 205–213 (2001).

    Article  Google Scholar 

  9. Meinzer, F. C. et al. Partitioning of soil water among canopy trees in a seasonally dry tropical forest. Oecologia 121, 293 (1999).

    Article  CAS  Google Scholar 

  10. Stahl, C. et al. Depth of soil water uptake by tropical rainforest trees during dry periods: does tree dimension matter? Oecologia 173, 1191–1201 (2013).

    Article  Google Scholar 

  11. Ryan, M. G., Phillips, N. & Bond, B. J. The hydraulic limitation hypothesis revisited. Plant Cell Environ. 29, 367–381 (2006).

    Article  Google Scholar 

  12. Zhang, Y.-J. et al. Size-dependent mortality in a Neotropical savanna tree: the role of height-related adjustments in hydraulic architecture and carbon allocation. Plant Cell Environ. 32, 1456–1466 (2009).

    Article  CAS  Google Scholar 

  13. McDowell, N. G. & Allen, C. D. Darcy's law predicts widespread forest mortality under climate warming. Nat. Clim. Change 5, 669–672 (2015).

    Article  Google Scholar 

  14. McDowell, N. G., Bond, B. J., Hill, L., Ryan, M. G. & Whitehead, D. in Size and age related changes in tree structure and function (eds Meinzer, F.C. & Niinemets, U. ) 255–286 (Springer Publishing, 2011).

    Book  Google Scholar 

  15. Roberts, J., Cabral, O. M. R. & Aguiar, L. F. de. Stomatal and boundary-layer conductances in an Amazonian terra firme rain forest. J. Appl. Ecol. 27, 336–353 (1990).

    Article  Google Scholar 

  16. Pfeifer, E. M., Hicke, J. A. & Meddens, A. J. H. Observations and modeling of aboveground tree carbon stocks and fluxes following a bark beetle outbreak in the western United States. Glob. Change Biol. 17, 339–350 (2011).

    Article  Google Scholar 

  17. Chapin, F. S., Randerson, J. T., McGuire, A. D., Foley, J. A. & Field, C. B. Changing feedbacks in the climate–biosphere system. Front. Ecol. Environ. 6, 313–320 (2008).

    Article  Google Scholar 

  18. Jiang, X. et al. Projected future changes in vegetation in western North America in the twenty-first century. J. Clim. 26, 3671–3687 (2013).

    Article  Google Scholar 

  19. Allen, C. D. et al. A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests. For. Ecol. Manag. 259, 660–684 (2010).

    Article  Google Scholar 

  20. Breshears, D. D. et al. Regional vegetation die-off in response to global-change-type drought. Proc. Natl Acad. Sci. USA 102, 15144–15148 (2005).

    Article  CAS  Google Scholar 

  21. Van Nieuwstadt, M. G. L. & Sheil, D. Drought, fire and tree survival in a Borneo rain forest, East Kalimantan, Indonesia. J. Ecol. 93, 191–201 (2005).

    Article  Google Scholar 

  22. Condit, R., Hubbell, S. P. & Foster, R. B. Mortality rates of 205 neotropical tree and shrub species and the impact of a severe drought. Ecol. Monogr. 65, 419–439 (1995).

    Article  Google Scholar 

  23. Mueller, R. C. et al. Differential tree mortality in response to severe drought: evidence for long-term vegetation shifts. J. Ecol. 93, 1085–1093 (2005).

    Article  Google Scholar 

  24. Anderson-Teixeira, K. J. et al. Size-related scaling of tree form and function in a mixed-age forest. Funct. Ecol. (2015).

  25. Poorter, H. et al. Biomass allocation to leaves, stems and roots: meta-analyses of interspecific variation and environmental control: Tansley review. New Phytol. 193, 30–50 (2012).

    Article  CAS  Google Scholar 

  26. Condit, R. et al. Quantifying the deciduousness of tropical forest canopies under varying climates. J. Veg. Sci. 11, 649–658 (2000).

    Article  Google Scholar 

  27. Laurance, W. F. & Williamson, G. B. Positive feedbacks among forest fragmentation, drought, and climate change in the Amazon. Conserv. Biol. 15, 1529–1535 (2001).

    Article  Google Scholar 

  28. Doughty, C. E. et al. Drought impact on forest carbon dynamics and fluxes in Amazonia. Nature 519, 78–82 (2015).

    Article  CAS  Google Scholar 

  29. da Costa, A. C. L. et al. Effect of 7 yr of experimental drought on vegetation dynamics and biomass storage of an eastern Amazonian rainforest. New Phytol. 187, 579–591 (2010).

    Article  Google Scholar 

  30. Mattson, W. J. & Haack, R. A. the role of drought in outbreaks of plant-eating insects. BioScience 37, 110–118 (1987).

    Article  Google Scholar 

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Thanks to all authors of the original studies included in this analysis; to J.A. Lutz, S.M. McMahon, A.D. Miller, A.J. Tepley, L. Poorter and A. Macalady for helpful feedback, and to J. Park, E. Bowman, M. Wang and J. Pearce for help with literature review and data compilation. This research was funded by a Smithsonian Competitive Grants Program for Science grant to KAT. NGM was supported by the Department of Energy, Office of Biological and Environmental Research, including through the Next Generation Ecosystem Experiment (NGEE) Tropics project and through Los Alamos National Lab's Laboratory Directed Research and Development. C.D.A. was supported by the U.S. Geological Survey's Ecosystems and Climate & Land Use Change mission areas, through the USGS Western Mountain Initiative project. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

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K.A.T., A.C.B. and N.G.M. conceived and designed the analysis, A.C.B., C.D.A. and K.A.T. compiled data; K.A.T. and A.C.B. analysed data; A.C.B., K.A.T., N.G.M. and C.D.A wrote the paper.

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Correspondence to Kristina J. Anderson-Teixeira.

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Bennett, A., McDowell, N., Allen, C. et al. Larger trees suffer most during drought in forests worldwide. Nature Plants 1, 15139 (2015).

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