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    Author(s): Dean S. DeBell; Boyd C. Wilson; Bernard T. Bormann
    Date: 1978
    Source: Res. Note PNW-RN-318. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 7 p
    Publication Series: Research Note (RN)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (480 KB)

    Description

    Examination of cross-sections of 54 red alder trees from 14 stands of varying age and site conditions indicated that abnormal rings (false, partial, or missing) occur infrequently. Rings may be indistinct and ring counting must be done with great care, preferably on prepared surfaces (cross-sections or cores) and under magnification and good lighting. With such preparations, ages of red alder trees can be determined with acceptable accuracy by conventional ring-counting procedures.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    DeBell, Dean S.; Wilson, Boyd C.; Bormann, Bernard T. 1978. The reliability of determining age of red alder by ring counts. Res. Note PNW-RN-318. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 7 p

    Keywords

    Ring counts, age determination, tree stand, red alder, Aznus rubra

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