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A practical guide to oak release.Author(s): Constance A. Harrington; Warren D. Devine
Source: Gen. Tech. Rep. PNW-GTR-666. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 24 p
Publication Series: General Technical Report (GTR)
Station: Pacific Northwest Research Station
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DescriptionOregon white oak savannas and woodlands represent a biological and cultural legacy in the Pacific Northwest. Many Oregon white oak stands are deteriorating owing to invasion and eventual overtopping by Douglas-fir or other conifers. Releasing the shade-intolerant oak trees from overtopping conifers can often restore these oak stands. When planning a release operation, there are many factors to consider such as timing and intensity of release, which trees to select for release, and management of the understory. A carefully executed oak release can minimize damage to oak trees, and followup treatments may reduce the spread of invasive plants. This guide answers the most commonly asked questions related to oak release.
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CitationHarrington, Constance A.; Devine, Warren D. 2006. A practical guide to oak release. Gen. Tech. Rep. PNW-GTR-666. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 24 p
KeywordsOregon white oak, Garry oak, Quercus garryana, release, restoration, competition, savanna.
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- Conifer encroachment in California oak woodlands
- Oak woodland restoration: understory response to removal of encroaching conifers.
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