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Published byJulie Lawrence Modified over 9 years ago
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BEN LOCKWOOD DAVID C. LEBLANC DEPT. OF BIOLOGY, BALL STATE UNIVERSITY Growth-Climate Associations for White Ash (Fraxinus americana L.) in Monroe County, Indiana
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Introduction Justification 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
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Study Site Hoosier National Forest
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Methods Sampling D/C-D > 50 yrs. Undamaged 15 trees 2 cores per tree Measuring Earlywood (EW) Latewood (LW) Total (RW)
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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
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Mean Monthly Maximum Temperature
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Total Monthly Precipitation
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Palmer Drought Severity Index
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White Ash & White Oak Comparison (Total RW)
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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
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Discussion Minimal influence of climate on EW during growing season Most climate sensitivity found in LW during growing season Carbon allocation model Foster and LeBlanc (1993)
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Acknowledgements Indiana Academy of Science Ball State University ASPIRE Program Zach Jameson, Ball State University
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QUESTIONS?
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