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): Tom Scott; Kevin Turner
    Date: 2015
    Source: Gen. Tech. Rep. PSW-GTR-251. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 359-373
    Publication Series: General Technical Report (GTR)
    Station: Pacific Southwest Research Station
    PDF: Download Publication  (202.0 KB)


    In 2012, the goldspotted oak borer (Agrilus auroguttatus, GSOB) was discovered in the mountain community of Idyllwild, 56.3 km north of its known area of infestation. This was the third time that a point of outbreak was discovered >32.2 km from the GSOB infestation area, suggesting that human transport of GSOB has substantially expanded the halo of California communities at imminent risk of GSOB-associated oak mortality. Even though this pattern of dispersal puts more communities at risk, the isolated nature of these new points of infestation offer some hope that their damage could be reduced or controlled by a rapid, initial response. Idyllwild suffered a major die-off of conifers in 2003, pre-adapting the community with an organizational structure, a tree removal/disposal infrastructure, and even some funding that was needed for a GSOB rapid response. Federal, state, and local agencies turned these attributes into a GSOB rapid response plan which also included components of detection, management, and education. As of 2014, our ad hoc response group had mapped the extent of oaks in decline in the region around Idyllwild, contacted all landowners and community residents through mailings and public meetings, conducted three training workshops, and surveyed approximately 154 properties. A total of 53 infested oaks have been found at 20 locations in Idyllwild and the adjacent community of Pine Cove, with the majority removed within a month of their discovery. Cross-sections from dead oaks indicate that infestations began in 2009, and that infested oak firewood may have been delivered to multiple locations generating simultaneous outbreaks. Although detections of GSOB-infested oak increased each year, we believe this represents an increased rate of discovery rather than an increased rate of infestation.

    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.


    Scott, Tom; Turner, Kevin. 2015. Evaluating rapid response to a goldspotted oak borer diaspora. In: Standiford, Richard B.; Purcell, Kathryn L., tech. cords. Proceedings of the seventh California oak symposium: managing oak woodlands in a dynamic world. Gen. Tech. Rep. PSW-GTR-251. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 359-373.


    community outreach, goldspotted oak borer, rapid response

    Related Search

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