Skip to Main Content
The impacts of increasing drought on forest dynamics, structure, and biodiversity in the United StatesAuthor(s): James S. Clark; Louis Iverson; Christopher W. Woodall; Craig D. Allen; David M. Bell; Don C. Bragg; Anthony W. D'Amato; Frank W. Davis; Michelle H. Hersh; Ines Ibanez; Stephen T. Jackson; Stephen Matthews; Neil Pederson; Matthew Peters; Mark W. Schwartz; Kristen M. Waring; Niklaus E. Zimmermann
Source: Global Change Biology. 22: 2329-2352. http://dx.doi.org/10.1111/gcb.13160
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
View PDF (4.0 MB)
Related Research Highlights
Reviewing the Impacts of Drought on Forests of the United States
DescriptionWe synthesize insights from current understanding of drought impacts at stand-to-biogeographic scales, including management options, and we identify challenges to be addressed with new research. Large stand-level shifts underway in western forests already are showing the importance of interactions involving drought, insects, and fire. Diebacks, changes in composition and structure, and shifting range limits are widely observed. In the eastern US, the effects of increasing drought are becoming better understood at the level of individual trees, but this knowledge cannot yet be confidently translated to predictions of changing structure and diversity of forest stands. While eastern forests have not experienced the types of changes seen in western forests in recent decades, they too are vulnerable to drought and could experience significant changes with increased severity, frequency, or duration in drought. Throughout the continental United States, the combination of projected large climate-induced shifts in suitable habitat from modeling studies and limited potential for the rapid migration of tree populations suggests that changing tree and forest biogeography could substantially lag habitat shifts already underway. Forest management practices can partially ameliorate drought impacts through reductions in stand density, selection of drought-tolerant species and genotypes, artificial regeneration, and the development of multistructured stands. However, silvicultural treatments also could exacerbate drought impacts unless implemented with careful attention to site and stand characteristics. Gaps in our understanding should motivate new research on the effects of interactions involving climate and other species at the stand scale and how interactions and multiple responses are represented in models. This assessment indicates that, without a stronger empirical basis for drought impacts at the stand scale, more complex models may provide limited guidance.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationClark, James S.; Iverson, Louis; Woodall, Christopher W.; Allen, Craig D.; Bell, David M.; Bragg, Don C.; D'Amato, Anthony W.; Davis, Frank W.; Hersh, Michelle H.; Ibanez, Ines; Jackson, Stephen T.; Matthews, Stephen; Pederson, Neil; Peters, Matthew; Schwartz, Mark W.; Waring, Kristen M.; Zimmermann, Niklaus E. 2016. The impacts of increasing drought on forest dynamics, structure, and biodiversity in the United States. Global Change Biology. 22: 2329-2352. http://dx.doi.org/10.1111/gcb.13160
Keywordsclimate change, drought, forest dieback, forest management
- Effects of drought on forests and rangelands in the United States: a comprehensive science synthesis
- Observed and anticipated impacts of drought on forest insects and diseases in the United States
- Projected tree species redistribution under climate change: Implications for ecosystem vulnerability across protected areas in the eastern United States
XML: View XML