Notes: Spatial Attack Pattern of a Western Washington Douglas-Fir Beetle Population
Abstract:Spatial attack pattern of the Douglasfir beetle, Dendroctonus pseudotsugae Hopkins, was investigated using R, the distance to the nearest neighbor, and I⊂, Morisita's index of dispersion. The attack pattern on 15 trees was shown to be uniform, and although the mechanisms directly controlling attack spacing were not investigated, a hypothesis involving bark distribution, sonic interaction, and short-range repellent pheromones is presented. Forest Sci. 22: 100-102.
Document Type: Miscellaneous
Affiliations: Professor, College of Forest Resources, University of Washington, Seattle, WA 98195
Publication date: 1976-03-01
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