Survey for balsam woolly adegid in Washington and Oregon.

I. Ragenovich; B. Willhite; R. Mitchell; D. Overhulser; K. Ripley

Treesearch

Survey for balsam woolly adegid in Washington and Oregon.

Informally Refereed

Authors:

I. Ragenovich, B. Willhite, R. Mitchell, D. Overhulser, K. Ripley

Year:

2002

Type:

Brochures

Station:

Pacific Northwest Research Station

Source:

[Brochure]. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station

Download (PDF 437 KB)

Download (PDF 437 KB): https://research.fs.usda.gov/download/treesearch/4990.pdf

Abstract

Balsam woolly adelgid (BWA) is an introduced insect that has had a significant impact on Abies tree species in the Pacific Northwest. During the late 1950s and 1960s, it caused extensive mortality of grand fir (A. grandis), subalpine fir (A. lasiocarpa), and silver fir (A. amabilis), particularly in the Cascade Range. This insect also affects tree growth and reproduction, potentially decreasing host generation and the role of the host tree in local ecosystems.

Citation

Ragenovich, I.; Willhite, B.; Mitchell, R.; Overhulser, D.; Ripley, K. 2002. Survey for balsam woolly adegid in Washington and Oregon. [Brochure]. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station