Threats created by import of timber and chips into Norway1

Abstract

In recent years, Norwegian forest industries have depended to some extent on imported coniferous timber and chips, which has to be debarked to fulfil phytosanitary requirements. However, the standard of debarking of logs and chips from North America is often low. Sunken areas on stems often develop from cankers or rot around knots, and often escape debarking. Besides, even debarked, timber and chips may carry dangerous pests (Inonotus weirii, Bursaphelenchus xylophilus). Precautions should be taken after landing to hinder further spread of such dangerous organisms.