Site and Stand Characterists

Authors

N. William Wulf
Rex G. Cates

Document Type

Article

Journal/Book Title/Conference

USDA Forest Service, Technical Bulletin

Publication Date

1987

First Page

90

Last Page

115

Abstract

Outbreak of western budworm occur over a wide geographic range, and populations are successful from warm, dry interior Douglas-fir types to cool, moist subalpine fire/spruce types. This wide distribution across environmental gradients and forest types could simple suggest that the budworm has broad adaptability. Outbreak frequency and infestation intensity vary considerably, however, which suggests budworm populations may be responding to an ecological similarity that exists among these seemingly diverse habitats. The common feature appears to be physiological stress in host trees.

Comments

This item was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

Recommended Citation

Wulf, N. and Cates, R. (1987). Site and stand characterists. In: MH Brookes et al. (eds) Western Spruce Budworm, pp. 90-115. USDA Forest Service, Technical Bulletin 1694.