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Publication Information

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Title: Fuel treatment effects on tree mortality following wildfire in dry mixed conifer forests, Washington State, USA

Author: Prichard, Susan J.; Kennedy, Maureen C.

Date: 2012

Source: International Journal of Wildland Fire. 21(8): 1004-1013

Publication Series: Journal/Magazine Article (JRNL)

Description: Fuel reduction treatments are increasingly used to mitigate future wildfire severity in dry forests, but few opportunities exist to assess their effectiveness. We evaluated the influence of fuel treatment, tree size and species on tree mortality following a large wildfire event in recent thin-only, thin and prescribed burn (thin-Rx) units. Of the trees that died within the first 3 years, most died in the first year regardless of treatment. First-year mortality was much higher in control and thin-only units than in thin-Rx units. Cumulative third-year mortality followed a similar trend. Percentage crown scorch is a strong predictor of mortality and is highly dependent on fuel treatment. Across all treatments, Pinus ponderosa had a lower probability of post-fire mortality than did Pseudotsuga menziesii. This study contributes further evidence supporting the effectivencss of thinning and prescribed burning on mitigating post-fire tree mortality. We also present evidence that a combination of thinning and prescribed burning is associated with lower incidence of post-fire bark beetle attack.

Keywords: bark beetles, crown scorch, Pinus ponderosa, Pseudotsuga menziesii

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.

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Citation:


Prichard, Susan J.; Kennedy, Maureen C. 2012. Fuel treatment effects on tree mortality following wildfire in dry mixed conifer forests, Washington State, USA. International Journal of Wildland Fire. 21(8): 1004-1013.

 


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