Wildfire-Driven Forest Conversion in Western North American Landscapes

Jonathan D. Coop, Sean A. Parks, Camille S. Stevens-Rumann, Shelley D. Crausbay, Philip E. Higuera, Matthew D. Hurteau, Alan Tepley, Ellen Whitman, Timothy Assal, Brandon M. Collins, Kimberley T. Davis, Solomon Dobrowski, Donald A. Falk, Paula J. Fornwalt, Peter Z. Fulé, Brian J. Harvey, Van R. Kane, Caitlin E. Littlefield, Ellis Q. Margolis, Malcolm NorthMarc André Parisien, Susan Prichard, Kyle C. Rodman

    Research output: Contribution to journalReview articlepeer-review

    Abstract

    Changing disturbance regimes and climate can overcome forest ecosystem resilience. Following high-severity fire, forest recovery may be compromised by lack of tree seed sources, warmer and drier postfire climate, or short-interval reburning. A potential outcome of the loss of resilience is the conversion of the prefire forest to a different forest type or nonforest vegetation. Conversion implies major, extensive, and enduring changes in dominant species, life forms, or functions, with impacts on ecosystem services. In the present article, we synthesize a growing body of evidence of fire-driven conversion and our understanding of its causes across western North America. We assess our capacity to predict conversion and highlight important uncertainties. Increasing forest vulnerability to changing fire activity and climate compels shifts in management approaches, and we propose key themes for applied research coproduced by scientists and managers to support decision-making in an era when the prefire forest may not return.

    Original languageEnglish
    Pages (from-to)659-673
    Number of pages15
    JournalBioScience
    Volume70
    Issue number8
    DOIs
    StatePublished - Aug 1 2020

    Keywords

    • climate change
    • ecological transformation
    • high-severity fire
    • stand-replacing fire
    • tree regeneration
    • tree seedlings
    • vegetation type conversion
    • wildfire

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