A Record of Winter Kill of Western Pine Beetle in California, 1932
Author: Miller, John M.
Source: Journal of Forestry, Volume 31, Number 4, 1 April 1933 , pp. 443-446(4)
Publisher: Society of American Foresters
Abstract: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
Publication date: 1933-04-01
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