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A Record of Winter Kill of Western Pine Beetle in California, 1932

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The effect of climate upon the abundance of insect life in the forest is a factor in ecology that can rarely be measured by quantitative methods. In the following article, however, is a record of the sudden depletion of the bark beetle population over a large area in the Modoc National Forest due to low temperatures but a few degrees below those which normally occur in winter in that region. Following a cold spell in December, 1932, 65 per cent of the western pine beetle broods were found to be dead. This resulted in the closing down of a control project and will undoubtedly have a large either upon the future course of the bark beetle epidemic which has been developing in that region.

Document Type: Journal Article

Affiliations: U. S. Bureau of Entomology, Berkeley, Calif.

Publication date: 1933-04-01

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

    2015 Impact Factor: 1.476
    Ranking: 22 of 66 in forestry

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