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Today’s topioc: Forest Health Issues Forest Health Defoliator Outbreaks How to determine Scientific “control” Timing, extent, patterns Relationship with fire The real tree killers Combined climate-human influence on SW forests http://cpluhna.nau.edu/index.htm. Forest Health.
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Today’s topioc: Forest Health Issues • Forest Health • Defoliator Outbreaks • How to determine • Scientific “control” • Timing, extent, patterns • Relationship with fire • The real tree killers • Combined climate-human influence on SW forests http://cpluhna.nau.edu/index.htm
Forest Health • Do forests get “sick”? How? • Form • - • - • - • Function • - • -
Why Care About Healthy Forests? • - • - • - • - • - • - • - • -
Spruce Budworm • - • - • - • - • - • -
Current Outbreak • Lots of dead trees • Still have branches • No fire char
Geography • - • - • - • -
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Deep Time Past • - • - • -------? • -------?
Scientific “Control” • “Treated”: - • “Control”: - • “Untreated”: - • - • - • -
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1 site • - • -
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DwarfMistletoe • - • -
Late 1800s 1992
A Grand Picture • - • - • - • - • - • - • -
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SW Forest Health Key Points • ------------------? • - • - • - • - • - • - • -
Healthy Forest Act (2003) • - • - • - • -