climate-fire relationships in a rare high elevation forest
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Climate-Fire Relationships in a Rare High Elevation Forest. Danielle Klaas Mentor: Dr. Pete Fulé. My Study:. Apply dendrochronology (tree-ring dating) to understand forest ecology. Reconstruct historical patterns of forest fires: severity and frequency. - PowerPoint PPT PresentationTRANSCRIPT
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Climate-Fire Relationships in a Rare High Elevation Forest
Danielle KlaasMentor: Dr. Pete Fulé
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My Study:
• Apply dendrochronology (tree-ring dating) to understand forest ecology.
• Reconstruct historical patterns of forest fires: severity and frequency.– Severe fires kill entire groups of trees, after which
even-aged tree groups form.– Fire frequency determined from fire scarred trees.
• Compare historical conditions to current management
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Hypotheses:• Historically fires were mixed
severity • Modern management
increased risk of large severe fires
Analyze:• Forest composition &
structure• Fire regimes
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50-100 101-150 151-200 201-250 251-300 301-350 351-400 401-450 451-50005
10152025303540
Pinus aristata Age Distribution
Age (years)
Freq
uenc
y of
Tre
es
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050
100150200250300350
Plot 1331
Trees
Age
(yea
rs)
0
20
40
60
80
100
120Plot 1278
Trees
Age
(yea
rs)
Even-Aged Stand= 70% of trees are within 30 years of each other
Uneven-Aged Stand = 70% of trees are not within 30 years of each other
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Pinus Aristata Stand Age Distribution
72%
28%Uneven AgedEven Aged
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Fire Scars
Living Snag StumpLog 23 9 2
2
Fire Years
1729175217541773178017991805183418421845184718671879
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Conclusion
1. First Pinus aristata fire regime study in the SW
2. Forest structure changes
3. Climate warming
4. Risks of severe fire
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Acknowledgements
Dr. Pete FuléNAU NASA Space GrantAZ Space Consortium
NAU School of Forestry
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Questions