growth-climate associations for white ash ( fraxinus americana l.) in monroe county, indiana
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B E N L O C K W O O DD AV I D C . L E B L A N C
D E P T. O F B I O L O G Y, B A L L S TAT E U N I V E R S I T Y
Growth-Climate Associations for White Ash (Fraxinus americana L.) in Monroe County,
Indiana
IntroductionJustification
Limited information regarding white ash
Limited time to acquire it Climate is changing
Objective Identify growth-climate association
for white ash in well drained soil Compare white ash & white oak
growth-climate associations
Study Site
Hoosier National Forest
Methods
Sampling D/C-D > 50 yrs. Undamaged 15 trees
2 cores per tree
Measuring Earlywood (EW) Latewood (LW) Total (RW)
Methods
Mean chronology 1932 – 2012 Cross-dating & standardization
Standard dendrochronological methods
Climate Data NOAA & Historical Climate
Network Monthly climate variables Seasonal climate variables
Pearson’s correlation coefficient
Mean Monthly Maximum Temperature
Total Monthly Precipitation
Palmer Drought Severity Index
White Ash & White Oak Comparison (Total RW)
Results
White ash EW Prior to growing season
White ash LW Water stress during current
growing season (June)
White ash & white oak (total RW) Similar growth-climate
associations
Summary
Discussion
Minimal influence of climate on EW during growing season
Most climate sensitivity found in LW during growing season
Carbon allocation modelFoster and LeBlanc (1993)
Acknowledgements
Indiana Academy of Science
Ball State University ASPIRE Program
Zach Jameson, Ball State University
QUESTIONS?
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