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Growth-Climate Associations for White Ash ( Fraxinus americana L.) in Monroe County, Indiana

Growth-Climate Associations for White Ash ( Fraxinus americana L.) in Monroe County, Indiana. Ben Lockwood David C. Leblanc Dept. of Biology, Ball state university. Justification Limited information regarding white ash Limited time to acquire it Climate is changing Objective

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Growth-Climate Associations for White Ash ( Fraxinus americana L.) in Monroe County, Indiana

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  1. Growth-Climate Associations for White Ash (Fraxinus americana L.) in Monroe County, Indiana Ben Lockwood David C. Leblanc Dept. of Biology, Ball state university

  2. 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 Introduction

  3. Hoosier National Forest Study Site

  4. Sampling • D/C-D • > 50 yrs. • Undamaged • 15 trees • 2 cores per tree • Measuring • Earlywood (EW) • Latewood (LW) • Total (RW) Methods

  5. 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 Methods

  6. Mean Monthly Maximum Temperature

  7. Total Monthly Precipitation

  8. Palmer Drought Severity Index

  9. White Ash & White Oak Comparison (Total RW)

  10. 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 Results Summary

  11. Minimal influence of climate on EW during growing season • Most climate sensitivity found in LW during growing season • Carbon allocation model Discussion Foster and LeBlanc (1993)

  12. Indiana Academy of Science • Ball State University ASPIRE Program • Zach Jameson, Ball State University Acknowledgements

  13. QUESTIONS?

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