Longleaf Pine Study Chipola College Marianna, Florida Dr. David Hilton Dr. Santine Cuccio Kari Kind-Adams Carole Chandler Lori Holland Debbie Yglesias
Information Regarding Longleaf Pines Latin name: Pinuspalustris • Can live 500 years • Have a deep taproot (2-3 meters) • Require sandy soil • Found in Southeastern US • Uses: turpentine, timber, resin • 97% of native longleaf pine forests have disappeared • Home to red-cockaded woodpecker
Stage 1: Grass Stage • 5-12 years • Resistant to fire • May take years to reach ankle height
Stage 2: Rocket Stage • Can grow 1.5 meters in one season • Early part of this stage pines are vulnerable to fire • Later in stage (2.5 meters) they are resistant
Stage 3: Adult Stage • 150 years until maturity is reached • Can grow to 30-35 meters tall • Can measure 0.7 meters in diameter • Highly resistant to fire
Our Question Is there a correlation between longleaf pine height and diameter? Can tree height be accurately predicted by measuring stem diameter? Hypothesis There is a strong correlation between longleaf pine height and diameter, at least for a period of time.
Procedures Random sample of 20% Only living trees were counted Failure rate: 58%
Procedures: Height Measured height to the top of the needles
Procedures: Diameter Measured diameter 5 centimeters from the base of plant
Scatter Plot Height (m) Diameter (cm)
Bar Graph Number of Trees Height (m)
Conclusions There appears to be a strong positive correlation between longleaf pine diameter and height at four years old. How long this trend continues will be assessed again in 2 years as part of the longitudinal study.
Acknowledgements Barry Stafford, Jackson County Forester Aaron Kinkaid, Forest Area Supervisor