Forest health in the Blue Mountains: the influence of insects and disease.

B.E. Wickman

doi:10.2737/PNW-GTR-295

Treesearch

Forest health in the Blue Mountains: the influence of insects and disease.

Informally Refereed

Authors:

B.E. Wickman

Year:

1992

Type:

General Technical Report

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-GTR-295

Source:

Gen. Tech. Rep. PNW-GTR-295. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 15 p.(Quigley, T.M., ed.; Forest health in the Blue Mountains: science perspective.)

Download (PDF 1.24 MB)

Download (PDF 1.24 MB): https://research.fs.usda.gov/download/treesearch/9032.pdf

Abstract

A science perspective of forest health in the Blue Mountains is summarized by using both historical and biological information. Many of the current pest problems are related to human activities that have occurred over the last 90 years. The almost complete loss of periodic low-intensity fires since 1900 plus extensive logging of pine have resulted in many thousands of acres of fir occupying pine sites. These fir forests are highly susceptible to pests and to catastrophic forest fires. Some long-term management strategies are now needed to alleviate the problems. Research recommendations also are suggested as part of the long-term solution.

Keywords

Keywords Insects, forest diseases, fire, grand fir, Douglas-fir, ponderosa pine, silviculture, landscape ecology

Citation

Wickman, B.E. 1992. Forest health in the Blue Mountains: the influence of insects and disease. Gen. Tech. Rep. PNW-GTR-295. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 15 p.(Quigley, T.M., ed.; Forest health in the Blue Mountains: science perspective.)