The wounding of sapwood in living trees results in a cascade of processes, including the formation of wound-initiated discoloration (Shigo, 1965). In three dimensions, this discoloration appears in the form of columns parallel to the stem axis with ragged, conical ends. All published reports indicate that in living trees, decayed wood only occurs in tissue that has undergone wound-initiated discoloration. The visible degree of discoloration and other features following wounding vary from one tree species to another. The size of wounds capable of inducing the decay process range from very small branch and root stubs to the mechanical breakage of main stems of adult trees.
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- Decay Column Boundary Layer Formation in Maple
Walter C. Shortle
Kevin T. Smith
- Springer US