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Examples of Tree Decline Due to Construction Activities.
Initial response to construction damage is generally seen as dieback to the tips
of the outer branches. As decline progresses those tree branches will
eventually die all the way back to the trunk. The third major symptom will be
the development of many new branches (called epicormic growth) in the canopy as
well as along the trunk and at the base of the trunk.
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(Figure 9-9)
Typical Symptoms of Decline
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| (Figure 9-10) Typical
Dieback of Distressed Trees
This photograph demonstrates typical
dieback associated with trees remaining in subdivisions after
contractors have finished rough grading. Most of these trees are showing
decline symptoms. The contractor did not protect the root zones of
trees that were intended to remain healthy. |
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(Figure 9-11) Mature Tree
Showing Initial Decline
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(Figure 9-12) Mature Tree
Dieback
The dieback of branches in the canopy
is the direct result of trenching to install the utility lines. Pictures
were taken 15 months after trenching occurred.
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