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): Matthew R. KluberDeanna H. Olson; Klaus J. Puettmann
    Date: 2009
    Source: Northwest Science
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (1.76 MB)

    Description

    Downed wood provides important faunal microhabitat in forests for numerous invertebrate taxa, small mammals and amphibians. Habitat suitability of downed wood as refugia is an increasing concern in managed Pacific Northwest forests, where overstory reduction may result in both reduced downed wood recruitment and increased temperatures within logs. We examined temperature profiles in western Oregon to assess differences in thermal regimes of logs and soil relative to summer air temperature extremes and their implications with respect to habitat suitability for plethodontid salamanders. Temperature profiles of small- (0.3-0.45 m) and large- (0.7-1.0 m) diameter logs, as well as ambient soil and air temperatures, were measured in a 60-year-old forest stand at two different positions (0-5 m and 35-40 m from stream edge) in three case studies: (1) along a headwater stream with a narrow riparian buffer (~6 m) and moderate upslope thinning; (2) along a headwater stream with a wider riparian buffer (~15 m) and moderate upslope thinning; and (3) along a headwater stream with an unthinned upslope. Streamside and upslope maximum air temperatures measured during July 2006 along all three streams were near or exceeded 30°C, the critical thermal tolerance threshold for western plethodontid salamanders. Streamside and upslope temperatures inside small logs, large logs, and soils stayed below critical temperatures. Our results suggest that logs of a wide size range, as well as soils, may provide sufficient protection against thermal extremes in uncut forests and thinned stands with limited overstory.

    Publication Notes

    • You may send email to pnw_pnwpubs@fs.fed.us 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.

    Citation

    Kluber, Matthew R.; Olson, Deanna H.; Puettmann, Klaus J. 2009. Downed wood microclimates and their potential impact on plethodontid salamander habitat in the Oregon Coast Range. Northwest Science. 83(1):25-34.

    Keywords

    Plethodontid salamander, habitat, managed headwater forests, downed wood thermal profiles, microclimate

    Related Search


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