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