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): Courtney M. Siegert; Heidi J. Renninger; A.A. Sasith Karunarathna; John J. Riggins; Natalie A. Clay; Juliet D. Tang; Nicole Hornslein; Brent L. Chaney
    Date: 2018
    Source: In: Kirschman, Julia E., comp. 2018. Proceedings of the 19th biennial southern silvicultural research conference. e-General Technical Report SRS- 234. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station.
    Publication Series: Proceedings - Paper (PR-P)
    Station: Forest Products Laboratory
    PDF: Download Publication  (1.0 MB)


    Disturbance-induced mortality events in forest ecosystems generate significant hotspots in biogeochemical cycles. These events occur sporadically across the landscape and contribute to large sources of error in terrestrial biosphere carbon models, which have yet to capture the full complexity of biotic and abiotic factors driving ecological processes in the terrestrial environment. The balance between production of stable soil organic matter and respiration from decomposing biomass greatly influences whether temperate forests remain modest carbon sinks or are transformed into carbon sources. In 2015, a field experiment to mimic pine beetle attack was established by girdling loblolly pine trees. Subsequent measurements of throughfall and stemflow for water quantity and quality, transpiration, stem respiration, soil respiration, and soil chemistry were used to quantify the extent of spatial and temporal impacts of tree mortality on carbon budgets. Enhanced fluxes from dying trees primed surrounding soils while decreased tree water use provided additional soil moisture to create biogeochemical hotspots, which could lead to accelerated carbon decomposition and mineralization rates.

    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.


    Siegert, Courtney M.; Renninger, Heidi J.; Karunarathna, A.A. Sasith; Riggins, John J.; Clay, Natalie A.; Tang, Juliet D.; Hornslein, Nicole; Chaney, Brent L. 2018. Biogeochemical hotspots around bark-beetle killed trees. In: Kirschman, Julie E., comp. Proceedings of theĀ 19th bienniel southern silvicultural research conference. e-Gen. Tech. Rep. SRS-234. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 444 p. pp. 73-81.


    Loblolly pine, biogeochemistry, pine beetle, girdling, decomposition

    Related Search

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