Notes: Cross-Dating Cores as a Nondestructive Method for Dating Living, Scarred Trees

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The objective of this study was to validate the use of increment cores for dating scarred trees as part of fire-history studies. Thirty-seven scarred conifers from four sites in the western United States were sampled both by coring and wedging (removing a partial cross section from the scar). For each tree the cores and wedge were analyzed using dendrochronological techniques to determine absolute fire dates, and the core and wedge dates were compared. Twenty-one of the 37 sampled trees were successfully dated and had identical core and wedge dates. Given certain constraints, researchers can effectively cross-date prescar growth from cores in fire- or other disturbance-history studies, and can accurately date scars with cores when wedge sampling is inappropriate or prohibited. For. Sci. 34(3):781-789.

Keywords: Fire history; dendrochronology

Document Type: Miscellaneous

Affiliations: Chairman and Associate Professor, Department of Natural Resources, Cornell University, Ithaca, NY 14853

Publication date: September 1, 1988

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