Citation
Investigating The Relationship Between Leaf Nitrogen, Growth Rate, And Canopy Reflectance at Ordway-Swisher Biological Station

Material Information

Title:
Investigating The Relationship Between Leaf Nitrogen, Growth Rate, And Canopy Reflectance at Ordway-Swisher Biological Station
Series Title:
18th Annual Undergraduate Research Symposium
Creator:
Towns, Alyssa
Language:
English

Subjects

Subjects / Keywords:
Center for Undergraduate Research
Biological Sciences
Genre:
Conference papers and proceedings
poster ( aat )

Notes

Abstract:
Many factors affect tree growth rates. In forests, digital images taken from above the canopy measure the canopy light reflectance and can be used to detect traits of individual tree crowns. Information on traits can then be used to estimate tree growth. While relationships between leaf nitrogen content and tree growth rates have been found, these relationships have not been widely explored using canopy reflectance for temperate forests. My aim is to identify a relationship between leaf nitrogen content and annual tree growth. I also test the relationships between nitrogen, growth, and canopy reflectance of individual trees. The annual tree growth was calculated from tree cores of several species from Ordway-Swisher Biological Station in Melrose, FL. Growth rates were compared to leaf nitrogen content. In addition, a measure of nitrogen was calculated from canopy reflectance. This measure was compared to actual leaf nitrogen and tree growth rates. The results show that there is generally a positive relationship between leaf nitrogen and tree growth rates. The relationship differs between genera and between species within a genus. It also seems remote sensing data may be reliable as an estimator of actual nitrogen content of trees as well as growth rates. ( en )
General Note:
Research Authors: Alyssa Towns - University of Florida
General Note:
Faculty Mentor: Jeremy Lichstein - Biology, University of Florida

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Source Institution:
University of Florida
Rights Management:
Copyright Alyssa Towns. Permission granted to University of Florida to digitize and display this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.

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