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
Help
 

GeoTreesearch


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

(149 KB)

Title: The effects of hazardous fuel reduction treatments in the wildland urban interface on the activity of bark beetles infesting ponderosa pine

Author: Fettig, Christopher J.; McMillin, Joel D.; Anhold, John. A.; Hamud, Shakeeb M.; Seybold, Steven J.; Borys, Robert R.

Date: 2008

Source: In: Gottfried, Gerald J.; Shaw, John D.; Ford, Paulette L., compilers. 2008. Ecology, management, and restoration of pinon-juniper and ponderosa pine ecosystems: combined proceedings of the 2005 St. George, Utah and 2006 Albuquerque, New Mexico workshops. Proceedings RMRS-P-51. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 186.

Publication Series: Proceedings (P)

   Note: This article is part of a larger document. View the larger document

Description: (Please note, this is an abstract only) Selective logging, fire suppression, forest succession, and climatic changes have resulted in high fire hazards over large areas of the western United States. Federal and state hazardous fuel reduction programs have increased accordingly to reduce the risk, extent and severity of these events, particularly in the wildland urban interface. In this study, we examined the effect of mechanical fuel reduction treatments on the activity of conifer-infesting bark beetles in ponderosa pine, (Pinus ponderosa Dougl ex. Laws.), stands. Treatments were applied in both late spring (April-May) and late summer (August-September) and included: (1) thinned biomass chipped and randomly dispersed within each plot, (2) thinned biomass chipped, randomly dispersed, and raked 2 m from the base of residual trees within each plot, (3) thinned biomass lopand- scattered within each plot, and (4) an untreated control. The mean percentage of trees attacked by bark beetles ranged from 2.0% (untreated control) to 30.2% (plots thinned in spring with all biomass chipped). A three-fold increase in the proportion of trees attacked by bark beetles was observed in chipped versus lop-and-scattered plots. Higher levels of bark beetle activity were associated with spring treatments, which in general corresponded with periods of peak adult beetle activity. Raking chips away from the base of residual trees did not significantly affect attack rates. Several bark beetle species were present including the roundheaded pine beetle, (Dendroctonus adjunctus Blandford), western pine beetle, (D. brevicomis LeConte), mountain pine beetle, (D. ponderosae Hopkins), red turpentine beetle, (D. valens LeConte), Arizona fivespined ips, (Ips lecontei Swaine), California fivespined ips, (I. paraconfusus Lanier), and pine engraver, (I. pini (Say)). Dendroctonus valens was the most common bark beetle infesting residual trees. A significant correlation was found between number of trees chipped per plot and the percentage of residual stems with D. valens attacks. At present, no significant difference in tree mortality exists among treatments.

Keywords: Pinon-juniper and juniper woodlands, ponderosa pine forests, ecology, management, restoration, southwestern United States

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 rmrspubrequest@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:


Fettig, Christopher J.; McMillin, Joel D.; Anhold, John. A.; Hamud, Shakeeb M.; Seybold, Steven J.; Borys, Robert R. 2008. The effects of hazardous fuel reduction treatments in the wildland urban interface on the activity of bark beetles infesting ponderosa pine. In: Gottfried, Gerald J.; Shaw, John D.; Ford, Paulette L., compilers. 2008. Ecology, management, and restoration of pinon-juniper and ponderosa pine ecosystems: combined proceedings of the 2005 St. George, Utah and 2006 Albuquerque, New Mexico workshops. Proceedings RMRS-P-51. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 186.

 


 [ 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.