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Marine Borers
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Marine Wood Borers in British Columbia
In British Columbia, the wood borer fauna represents a small number of species, but produces a large amount of damage on unprotected floating and fixed marine structures. This report reviews previous studies and describes the basic biology and ecology of the important species as well as present control measures.
Toxicity of Chemicals to Marine Borers-1
The object of the task was to develop materials and techniques for treating timbers to retard or prevent marine borer attack.
Marine Borers
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Nondestructive Testing Technique to Quantify Deterioration from Marine Borer Attack in Sitka Spruce and Western Hemlock Logs
Stress-wave nondestructive evaluation (NDE) techniques are used widely in the forest products industry--from the grading of wood veneer to inspection of timber structures. Inspection professionals frequently use stress-wave NDE techniques to locate internal voids and decayed or deteriorated areas in large timbers. Although these techniques have proven useful, little information exists concerning the relationship between stress-wave parameters and deterioration observed as a consequence of marine borer attack. In this pilot test, we examined the relationship between stress-wave transmission time and the quality of wood in Sitka spruce and western hemlock logs that had varying degrees of deterioration as a consequence of attack from marine borers. Stress-wave transmission time, perpendicular to grain, was measured at several locations on each log. The logs were then sawn into lumber, which was then visually evaluated. A relationship was observed between stress-wave transmission time and deterioration of the logs and the yield of lumber from the logs.
