1. 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

2. Forest Health
Do forests get “sick”? How?
Form -
Function

3. Why Care About Healthy Forests?-

4. Spruce Budworm -

5. Current Outbreak
Lots of dead trees
Still have branches
No fire char

6. Clumps of trees often succumb together

7. Inside the woods can be quite airy

8. One management strategy is ____________-

9. Geography -

11. -

12. Deep Time Past - ?

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

14. - -

15. 1 site -

16. -

17. Bark Beetles

19. Any fire effects?
Beetle damage

21. Dwarf Mistletoe -

22. Huge recruitment of ________________ in NM-

23. Late 1800s
1992

24. A Grand Picture - -

25. -

26. SW Forest Health Key Points? -

27. Healthy Forest Act (2003) -