Noninfectious Disorders
FIELD GUIDE TO INSECTS AND DISEASES OF ARIZONA AND NEW MEXICO FORESTS
Lightning

Most lightning struck trees are only superficially damaged, but approximately 2 percent of the annual tree mortality in the region has been attributed to lightning. Killed trees are either blown apart at impact or soon colonized by bark beetles, or both. Damage is in the form of a long narrow furrow in which the bark is removed and a narrow band of wood exposed. Sometimes lightning damage results in internal decay that may provide cavity-nesting habitat for wildlife.

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Figure 291. Figure 291. Lightning struck trees are often attacked by bark beetles.
Figure 292. Figure 292. Many lightning struck trees survive for decades and are slowly decayed.