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Technical Note—Little Response of True Fir Saplings to Understory Shrub Removal

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The ability of white fir and California red fir to become established, persist, and eventually dominate montane shrub fields is well known. When the firs have eventually dominated do the understory shrubs continue to inhibit growth? In a small study in the southern Cascade Range of northeastern California, we tested the growth response of a thinned stand of saplings to removal of a shrub understory. Also, we examined several commonly used predictors of the ability of saplings to respond to release. Results indicated a statistically significant increase in dbh and height growth following release that disappeared after 5 yr. The growth response that was probably too small to justify the cost of shrub removal was best predicted by the trees' height growth the 5 yr before release. West. J. Appl. For. 17(1):5–8.

Keywords: California red fir; White fir; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; growth response; natural resource management; natural resources; shrub competition

Document Type: Miscellaneous

Affiliations: Pacific Southwest Research Station, USDA Forest Service, 2400 Washington Ave., Redding, CA, 96001

Publication date: January 1, 2002

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.
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