Bark Beetle Infestations of Lodgepole Pine Following a Fire in South Central Oregon

Document Type

Article

Journal/Book Title/Conference

Journal of Applied Entomology

Publication Date

1984

Issue

1-5

Volume

98

Publisher

John Wiley and Sons, Inc.

First Page

389

Last Page

394

Abstract

After light ground fires smolder through climax lodgepole pine (Pinus contorta var. murrayana) stands, Dendroctonus ponderosae attacked a high proportion of unscorched and lightly fire-damaged trees; Ips pini preferentially attacked the moderately to heavily fire-damaged trees. Discriminant analysis showed that percent root kill and tree diameter correctly classified 74% of the D. ponderosae infested trees; I. pini attacks were negatively correlated with tree diameter and positively correlated with percent basal kill and these two variables correctly classified 84% of I. pini infestations. Percent root kill was the most important fire related variable associated with combined Ips and/or Dendroctonus attacks. The influence these light fires have on lodgepole pine stand dynamics is also discussed.

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