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Detection Methods Compare Day, Ken
2008
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Abstract: Douglas-fir bark beetle (Dendroctonus pseudotsugae) is a native beetle which attacks recently killed Douglas-fir trees. In periods of epidemic populations the beetles are capable of mass-attacking and killing live but stressed Douglas-fir trees. These epidemics frequently follow weather events that cause significant stand damage (such as windthrow or snow-breakage) or extended drought conditions. At the Alex Fraser Research Forest, heavy snow events in 1998 and 2003, plus wind events in 2003 and 2007, have created conditions where Douglas-fir bark beetle populations are rising. According to Day (2007) bark beetle control strategies on the research forest emphasize prompt detection and removal through aerial sketch mapping of red-attack trees in August, followed by thorough ground reconnaissance, and prompt harvesting of current attack centres before the following March to prevent beetle emergence. In 2007 the general bark beetle detection work outside the Research Forest was undertaken by the use of medium-resolution digital photo mosaics, which were analyzed for the presence of red-attack trees.
 
Day, Ken, Skea, Don; Koot, Cathy. 2008. Detection Methods Compare. Forest Investment Account (FIA) - Forest Science Program. Forest Investment Account Report. FIA2008MR287
 
Topic: FLNRORD Research Program
Keywords: Forest, Investment, Account, (FIA), British, Columbia
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