Skip to Main Content
Examining the relationship between fire history and sudden oak death patterns: a case study in Sonoma CountyAuthor(s): Max A. Moritz; Dennis C. Odion
Source: In: Frankel, Susan J.; Shea, Patrick J.; and Haverty, Michael I., tech. coords. 2006. Proceedings of the sudden oak death second science symposium: the state of our knowledge. Gen. Tech. Rep. PSW-GTR-196. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 169-177
Publication Series: General Technical Report (GTR)
Station: Pacific Southwest Research Station
PDF: View PDF (130 KB)
DescriptionFire is often integral to forest ecology and can affect forest disease dynamics. Sudden oak death has spread across a large, fire-prone portion of California, killing large numbers of oaks and tanoaks and infecting most associated woody plants. Building on our earlier study of fire-disease dynamics, we examined spatial patterns of confirmed infections in relation to past fire history for a single county using a geographic information system (GIS). The region analyzed here is Sonoma County, where infections have been documented in past burn areas and exposure to the disease is thought to be extensive. We found that the disease is extremely rare inside recently burned areas (since 1950), although the relationship in this region is somewhat weaker than previous findings across a much larger area. This highlights how factors, such as variation in vegetation, climate, and patterns of severity, within burn areas are important to consider in the landscape pathology of sudden oak death. Despite confirmation of earlier findings at a different scale of analysis, it remains to be seen whether the observed negative relationship between current infection locations and past fires is due to a fire-related mechanism, a surrogate of fire, and/or an artifact of the datasets used. Regardless, it is likely that interactions between the disease and fire will vary with local differences in host species composition, the stage of disease progression, and the scales of space and time used in analyses.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMoritz, Max A.; Odion, Dennis C. 2006. Examining the relationship between fire history and sudden oak death patterns: a case study in Sonoma County. In: Frankel, Susan J.; Shea, Patrick J.; and Haverty, Michael I., tech. coords. Proceedings of the sudden oak death second science symposium: the state of our knowledge. Gen. Tech. Rep. PSW-GTR-196. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 169-177
Keywordsspatial pattern analysis, landscape pathology, fire management, forest disease epidemiology
- Managing sudden oak death on federal lands in southwest Oregon: triumphs and challenges
- A revised sudden oak death risk map to facilitate national surveys
- Protecting Trees from Sudden Oak Death before Infection
XML: View XML