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Early detection monitoring of Phytophthora ramorum in high-risk forests of CaliforniaAuthor(s): Ross Meentemeyer; Elizabeth Lotz; David M. Rizzo; Kelly Buja; Walter Mark
Source: 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: 361-363
Publication Series: General Technical Report (GTR)
Station: Pacific Southwest Research Station
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DescriptionEarly detection monitoring is essential for successful control of invasive organisms. Detection of invasions at an early stage of establishment when a population is small and isolated makes eradication more feasible and less costly. Sudden oak death, caused by the recently described pathogen Phytophthora ramorum, is an emerging forest disease that has reached epidemic levels in coastal forests of central and northern California. To control the spread of the pathogen and protect susceptible habitats, California has established an extensive monitoring program focused on early detection of pathogen activity at isolated locations, where it may be possible to apply chemical treatments or attempt eradication. It is also essential to understand when and where the risk of establishment is elevated in order to effectively monitor the pathogen and manage threatened forests in a state as large (408,512 km2) and environmentally variable as California. Funded by the USDA Forest Service and California Department of Forestry and Fire Protection, the objectives of this research are to: (1) use GIS-based risk modeling to target early detection sampling efforts in the most threatened forests across the state of California; and (2) discover emergent infections of P. ramorum before they become well-established. Here, we present two years (2003-04) of results from California’s early detection survey of P. ramorum.
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CitationMeentemeyer, Ross; Lotz, Elizabeth; Rizzo, David M.; Buja, Kelly; Mark, Walter. 2006. Early detection monitoring of Phytophthora ramorum in high-risk forests of California. 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: 361-363
Keywordsearly detection monitoring, GIS risk model, Phytophthora ramorum, sudden oak death
- Six years of aerial and ground monitoring surveys for sudden oak death in California
- Landscape epidemiology and control of pathogens with cryptic and long-distance dispersal: Sudden oak death in northern Californian forests
- Mapping sudden oak death risk nationally using host, climate, and pathways data
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