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Space wars the fight for light in the stands of bartlett sarah congress

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Space wars the fight for light in the stands of bartlett sarah congress

  1. 1. Space Wars: The Fight For Light in the Stands of Bartlett Sarah Congress, Bob Fahey and Ruth Yanai
  2. 2. Forest canopy structure influences characteristics within forest ecosystems Shaped by: Species composition Tree arrangement Availability of light and nutrients Influences: Leaf Area Index Forest productivity Driver of ecosystem functioning Fahey et al 1998
  3. 3. LiDAR can be used to help quantify the structural complexity of a forest canopy. • Used for • Canopy gap fractions • Aboveground biomass 1st Return 2nd Return 3rd Return
  4. 4. First Steps • Create a map of the tree canopy within stands of the Bartlett, Hubbard Brook and Jeffers Brook • Describe the position of each species within the canopy
  5. 5. Collecting data 1. Use meter tape to note position down the transect 2. Use hypsometer to find the beginning height of each species 3. Record and Repeat
  6. 6. The beginning height of tree species within the canopy
  7. 7. Vegetation area index profile for a young stand
  8. 8. Vegetation area index profile for a mid-age stand
  9. 9. Next Steps • Combine LiDAR data with field data to create a species specific Vegetation Area Index • Determine whether treatments have affected the dominance or position of species in the canopy

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