Ambrosia Beetle Attack on Logs Before and After Processing Through a Dryland Sorting Area

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Abstract
Damage by ambrosia beetles was assessed on logs arriving at and leaving a northern Vancouver Island dryland sort. Damage on incoming logs was severe, indicating a high population of attacking beetles in the forest. Although logs were processed rapidly through the dryland sort, exposed portions of logs in booms were subjected to additional attack by resident dryland sort beetles, causing additional damage. Value lost to degrade equalled $0.89/m3 processed during the seven weeks of the study, 44.9% from attack by-beetles in the woods, and an additional 55.1% by beetles; in the sort.

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