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    Author(s): Brendan Twieg; Yana Valachovic; Richard Cobb; Dan Stark
    Date: 2017
    Source: Proceedings of the sudden oak death sixth science symposium. Gen. Tech. Rep. GTR-PSW-255. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 19-22.
    Publication Series: General Technical Report (GTR)
    Station: Pacific Southwest Research Station
    PDF: Download Publication  (872.0 KB)

    Description

    Forest CO2 emissions, which have recently become a more regular concern in forest management, can radically increase following pest and disease outbreaks. We inventoried trees in a stand adjacent to an infested area in northern Humboldt County, California, and used a stand-level dynamic disease model to forecast Phythophthora ramorum-caused tanoak mortality with and without a proposed treatment to mitigate disease spread and impacts. Using forest growth simulations employing model-predicted mortality rates, a proposed treatment that removes California bay laurel and reduces tanoak stem density results in a substantial increase in the forecasted basal area of tanoak retained after 100 years, along with an increase of up to about 100% in the amount of CO2 emission equivalents stored as carbon in live trees. While the magnitude of treatment benefit varies depending on how parameters are applied in the disease model and growth simulator, all of the scenarios we attempted resulted in net benefits to retention of larger tanoak and carbon storage.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Twieg, Brendan; Valachovic, Yana; Cobb, Richard; Stark, Dan. 2017. Reducing CO2 emissions by managing for sudden oak death...is it possible? In: Frankel, Susan J.; Harrell, Katharine M., tech. coords. Proceedings of the sudden oak death sixth science symposium. Gen. Tech. Rep. GTR-PSW-255. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 19-22.

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https://www.fs.usda.gov/treesearch/pubs/53995