Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (288 KB bytes)

Title: Lumber recovery and deterioration of beetle-killed Douglas-fir and grand fir in the Blue Mountains of eastern Oregon.

Author: Parry, Dean L.; Filip, Gregory M.; Willits, Susan A.; Parks, Catherine G.;

Date: 1996

Source: Gen. Tech. Rep. PNW-GTR-376. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 24 p

Publication Series: General Technical Report (GTR)

Description: The purpose of this study was to determine the effect of time since death over a 4-year period on the amount of usable product volume and value, and to determine the species of fungi associated with wood deterioration in the stems of Douglas-fir and grand fir trees killed by bark beetles in northeastern Oregon. Sap rot, caused principally by Cryptoporus volvatus, increased significantly with years dead for both Douglas-fir and grand fir, but there were no significant differences in sap rot among d.b.h. (diameter at breast height) classes. Few insects were associated with defective wood, probably because of the relatively dry condition of the wood. Log breakage during logging in the live samples was less than 0.5 percent of the gross volume, and the amount of wood too defective to remove from the woods was about 2.5 percent in the dead Douglas-fir and 3.8 percent in the dead grand fir. Two-year-dead Douglas-fir recovered about 8 percent less lumber volume than live and 1-year dead Douglas-fir and all classes of dead grand fir. Three- and four-year dead Douglas-fir combined lost another 7 percent in lumber volume. Average lumber value (dollars per thousand lumber tally) and average log value (dollars per hundred cubic feet) analysis showed no difference among the live and 1-year-dead Douglas-fir samples. Average log value decreased about $60 from the live class to the grand fir dead class and another $60 for the Douglas-fir dead. Contrary to popular belief, the grand fir did not deteriorate as fast as the Douglas-fir or lose as much value as expected.

Keywords: Douglas-fir, Pseudotsuga menziesii, grand fir, Abies grandis, lumber recovery, utilization, dead timber, western spruce budworm, Choristoneura occidentalis, Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, fir engraver, Cryptoporus volvatus, Trichaptum (Polyporus) abieinum, Fomitopsis pinicola

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
  • You may send email to pnw_pnwpubs@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


Parry, Dean L.; Filip, Gregory M.; Willits, Susan A.; Parks, Catherine G. 1996. Lumber recovery and deterioration of beetle-killed Douglas-fir and grand fir in the Blue Mountains of eastern Oregon. Gen. Tech. Rep. PNW-GTR-376. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 24 p

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.