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    Author(s): Sally Duncan
    Date: 2004
    Source: Science Findings 64. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p
    Publication Series: Science Findings
    Station: Pacific Northwest Research Station
    PDF: View PDF  (628.0 KB)

    Description

    In 1910, Thornton T. Munger, the first director of the PNW Research Station, established the first forested permanent study plot in the Pacific Northwest. He recognized that long-term field observation was the only approach that could provide real data on forest dynamics, which occur over time scales longer than human lifespans.

    For the next 80 years, Station scientists established additional plots and continued plot measurements throughout the region. The majority of plots were established in natural, closed canopy forests, unaffected by harvest. Currently the Pacific Northwest Research Station manages this permanent study plot (PSP) network, which includes long-term measurements on over 100,000 trees in 145 plots.

    Data from these plots have been used by scientists and managers around the country to address basic and applied questions in forest ecology and management, including development of old-growth structure, tree mortality, carbon sequestration, and timber yield. As the physical, social, and political landscapes have changed over the past century, so the findings from PSP data continue to inform and change the thinking about the future of forests in the Pacific Northwest.

    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

    Duncan, Sally. 2004. 100,000 trees can''t be wrong: permanent study plots and the value of time. Science Findings 64. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p

    Keywords

    Permanent study plots, Thornton Munger

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https://www.fs.usda.gov/treesearch/pubs/6956