Today’s topioc: Forest Health Issues 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

Clumps of trees often succumb together

Inside the woods can be quite airy

One management strategy is ____________ -

Geography -

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Deep Time Past - -------?

Scientific “Control” “Treated”: - “Control”: - “Untreated”: - -

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1 site -

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Bark Beetles

Any fire effects? Beetle damage

Dwarf Mistletoe -

Huge recruitment of ________________ in NM -

Late 1800s 1992

A Grand Picture - -

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SW Forest Health Key Points ------------------? -

Healthy Forest Act (2003) -