Validation and refinement of a plant indicator model for grand fir mortality by the fir engraver

Authors

  • Ronald L. Mahoney College of Forestry, Wildlife and Range Sciences University of Idaho Moscow, Idaho
  • James A. Moore College of Forestry, Wildlife and Range Sciences University of Idaho Moscow, Idaho
  • John A. Schenk College of Forestry, Wildlife and Range Sciences University of Idaho Moscow, Idaho

Keywords:

grand fir, fir engraver, <i>Abies grandis</i>, <i>Scolytus ventralis</i>, understorey plants, linear regression, indicator plants

Abstract

A previously developed plant indicator model that estimates grand fir mortality by the fir engraver was tested in 7 grand fir stands. The observed and predicted mortality levels were similar in 5 of the test stands for trees killed during a 3-year period. A better statistical fit was achieved by refining the model and its parameters based on a combined set of data from the original and test stands.

References

Moore, J.A., J.A. Schenk, and C.R. Hatch. 1978. Validation and refinement of a hazard rating model for fir engraver-caused mortality in grand fir stands. Forest Sci. 24: 309-312.

Partridge, A.D. and D.L. Miller. 1972. Bark beetles and root rots related in Idaho conifers. Plant Disease Reptr. 56:498-500.

Schenk, J.A., J.A. Moore, D.L. Adams, and R.L. Mahoney. 1977. A preliminary hazard rating of grand fir stands for mortality by the fir engraver. Forest Sci. 23:103-110.

Schenk, J.A., R.L. Mahoney, J.A. Moore, and D.L. Adams. 1976. Understory plants as indicators of grand fir mortality due to the fir engraver. J. Entomol. Soc. Brit. Columbia 73:21-24.

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Published

2019-09-06

Issue

Vol. 76 (1979): Journal of the Entomological Society of British Columbia

Section

Articles

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