Here Are Some Basic Patterns of COMPARTMENTALIZATION and SUCCESSIONS After One Wounding Period.

COLOR CODES
Red-Tree response (chemical protective reactions).
Green-Position of pioneer microorganisms (can be bacteria, decay fungi, or nondecay fungi). Wood in this area is usually discolored; its cell contents are altered.
Brown-Position of decayed wood; cell walls are digested.
Five branch stubs. Strong compartmentalization. The wound closure is complete. (fig. 37)

Four large open stubs. Diameter of the tree at time of branch death is the diameter of the column of decayed wood. Discolored wood surrounds the decay. Pioneer organisms are in green zone. (fig. 38)

Figure 37 Figure 38
Figure 37 Figure 38

Closed minor wound after 5 years. Invasion is well compartmentalized. (fig. 39) Two large open wounds after 10 years. Column of discolored and decayed wood is diameter of tree when wounded. This pattern will be the same in trees that have heartwood. INJURED AND INFECTED TISSUES IN HEARTWOOD ARE ALSO COMPARTMENTALIZED. (fig. 40) One severe wound after 10 years. The discolored and decayed wood is confined to one side of the tree. Although the red zone is shown on the side opposite the wound, no anatomical changes will be seen. All the wood within the entire cylinder present at the time of wounding will be slightly altered; in most cases, this will be too subtle to be visible. (fig. 41)

Figure 39 Figure 41
Figure 39
Figure 40
Figure 40Figure 41
Figure 42
Figure 42
WOUNDS start the processes that could lead to discolored and decayed wood. The classical concept and the expanded concept both recognize wounds as the starting point for the processes. Trunk wounds can be caused by a variety of agents: insects, birds, small and large animals, wind, ice, snow, temperature extremes, chemicals, and people and some of their activities. Often the wound is seen but not the agent that inflicted it, such as the porcupine wound in this pine. (fig. 42)

Figure 43 Figure 44
Figure 43

And the black bear wound on the
western hemlock. Wall 4 forms as a
cylinder and the decay develops as a
cone within the cylinder as Walls 1.,
2., and 3 give way to microorganisms.
(fig 43)

 Figure 44     Gymnosperm

Root and butt decay associated with
wounds are also compartmentalized
in gymnosperms(fig.44) and
angiosperms. (fig 45)

Figure 45
Figure 45 Angiosperm Ganoderma applanatum

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