Biological interrelationships between the ambrosia beetle
Xyleborus dispar (F.) (Coleoptera:Scolytidae) with its symbiotic
fungus, Ambrosiella hartigii Batra (Fungi Imperfecti) were investigated
in western Oregon.
Postdiapause adults of X. dispar collected in March through
June with rotary nets, and excised from overwintered and newly
attacked host material, produced a single generation...
The objective of this study is to investigate those economic considerations that may limit the ability of the Pacific Northwest's pulp and paper industry to compete with other regions producing pulp, paper and board for world markets. The share of the Pacific Northwest and the United States in world trade...
