Title: Cankers on Western Quaking Aspen (FIDL)
Author: Johnson, David W.; Beatty, Jerome S.; Hinds, Thomas E.;
Source: Forest Insect & Disease Leaflet 152. [Denver, CO:] U.S. Dept. of Agriculture, Forest Service, Forest Health Management, Rocky Mountain Region
Publication Series: Forest Insect and Disease Leaflet (FIDL)
Description: Quaking aspen (Populus tremuloides Michx.) is one of the most well-known tree species in the western United States (figure 1). It is found from the northern limit of trees in northwestern Alaska through the western United States and into northern Mexico. Quaking aspen is an aggressive pioneer species that frequently colonizes burned sites, making it an important component of many western ecosystems. Long appreciated for its esthetic and shade tree value and its importance for wildlife, aspen is also capable of excellent growth and high yields and thus is an important commercial timber species. However, aspen has one major drawback-its soft bark is easily wounded by abiotic factors, animals, and insects. Subsequently, these wounds can be invaded by disease organisms. In some areas of the Rocky Mountains, for example, elk gnaw extensively on the bark, leading to rapid deterioration of the stand. However, canker diseases are by far the most serious causes of tree mortality.
Keywords: Wildlife, mortality.
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Johnson, David W.; Beatty, Jerome S.; Hinds, Thomas E. 1995. Cankers on Western Quaking Aspen (FIDL). Forest Insect & Disease Leaflet 152. [Denver, CO:] U.S. Dept. of Agriculture, Forest Service, Forest Health Management, Rocky Mountain Region
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