Deciduous Tree and Shrub Phenology Project

Overview

Research Question

  1. How does tree phenology affect photosynthesis?
  2. How much photosynthetic diversity exists within the deciduous trees on campus?

This project seeks to understand the relationship between photosynthesis and phenology in deciduous trees and shrubs. This photosynQ project is part of a sister project on Nature's Notebook. The questions are part of a standardized phenology protocol used in Nature's notebook (Denny et al., 2014).

Denny, E. G., Gerst, K. L., Miller-Rushing, A. J., Tierney, G. L., Crimmins, T. M., Enquist, C. A. F., ... Weltzin, J. F. (2014). Standardized phenology monitoring methods to track plant and animal activity for science and resource management applications. International Journal of Biometeorology, 58(4), 591-601. http://dx.doi.org/10.1007/s00484-014-0789-5

Protocols

Leaf Photosynthesis MultispeQ V1.0

Summary

Measures many photosynthesis-related parameters in <15 seconds, including:

  • Chlorophll Fluorescence: Phi2, PhiNPQ, PhiNO, NPQt, qL, LEF
  • Relative Chlorophyll: SPAD
  • Proton Motive Force: ECSt, vH+, gH+
  • Absorbance at: 450, 535, 605, 650, 730, 850, 880, and 940nm.
  • Leaf Thickness (in mm), angle, and cardinal direct...

Questions

  1. How many buds are breaking? (Multiple Choice)
  2. How many young leaves are present? (Multiple Choice)
  3. What percentage of full size are most leaves? (Multiple Choice)
  4. What percentage of the canopy is full with leaves? Ignore dead branches in your estimate. (Multiple Choice)
  5. How many flowers and flower buds are present? (Multiple Choice)
  6. What percentage of all fresh flowers are open? (Multiple Choice)
  7. How much pollen is released (Multiple Choice)
  8. What is the tree species? (Multiple Choice)
  9. What is the tree number? (Multiple Choice)
  10. How many fruits are present? (Multiple Choice)
  11. What percentage of all fruits on the plant are ripe? (Multiple Choice)
  12. What percentage of the canopy is full with colored leaves? (Multiple Choice)
  13. How many mature fruits have drooped or been removed recently? (Multiple Choice)
  14. One or more leaves are falling or have recently fallen from the plant. (Multiple Choice)
  15. Leaf Condition (Multiple Choice)
  16. What color is the leaf? (Multiple Choice)

Locations

Team

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Project Lead (108)
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