Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Craig D. Allen
    Date: 2014
    Source: Proceedings. RMRS-P-71. Fort Collins, CO: US Department of Agriculture, Forest Service. Rocky Mountain Research Station. p. 103-123.
    Publication Series: Proceedings (P)
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (5.0 MB)


    This paper addresses an important set of issues currently facing the forests of western North America - the intersection of 20th Century land use legacies and the emerging impacts of climate change on drought, forest stress, wildfire, and ecosystem change. The presented information comes from a variety of sources in the scientific literature, with a focus on the Southwest United States, particularly including observations from my home landscape of the Jemez Mountains in northern New Mexico. Historic fire suppression and two regionally wet climate periods fostered widespread buildups of forest densities and fuel loads since ca. 1900. With the recurrence of drought conditions coupled with warmer temperatures since the late 1990s, the overgrown forests in the Southwest have been subject to wildfires and tree mortality episodes of historically unprecedented extent and severity, along with emergent shifts in vegetation patterns. Currently observed trends are indicative of early-stage ecosystem reorganization in response to historic land management practices combined with recent novel climate stresses. This convergence of climate stress, human land use patterns and histories, and disturbance trends in the southwestern United States may foreshadow widespread forest ecosystem changes more broadly in North America, and globally.

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • 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.


    Allen, Craig D. 2014. Forest ecosystem re-organization underway in the southwestern United States: A preview of widespread forest changes in the Anthropocene? In: Sample, V. Alaric; Bixler, R. Patrick, eds. Forest conservation and management in the Anthropocene: Conference proceedings. Proceedings. RMRS-P-71. Fort Collins, CO: US Department of Agriculture, Forest Service. Rocky Mountain Research Station. p. 103-123.


    forest conservation, management, Anthropocene, climate change

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page