Winter Term 2005

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Winter Term 2005

• Orientation and Vegetation Mapping

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Sampling Scheme
Aerial Photograph of the Nature Park, showing 41
Study Sites (restricted random locations)
Quarry
Study Sites
Thank you to Beth Wilkerson for the GIS imagery!
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Study Site 5 x point-center quarter sampling of
4 trees
Chinkapin Oak! 22.5 cm!
Central Point
15 m
NE
NW
SE
SW
4 Points located 15 m N,S,E, W of center
Identify species, record diameter, and distance
to the center of the 4 closest trees
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Data Analysis! Students learned how to calculate
tree species composition
and transfer that information onto maps of the
DPU Nature Park.
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• Results Species Importance Maps of the Nature
  Park
• Sugar/Black Maple
• Red Oak
• Chinkapin Oak
• Ashes
• Elms
• Black Cherry
• Black Locust
• Sycamore
• Tulip Tree
• (35 species in all)
• Importance (relative size relative density) /
  2

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• Results Forest Type Map of the Nature Park
• Cluster analysis of tree importance data produced
  6 types with 11 subtypes
• Forest type data can be used to facilitate
  further research
• Results will be posted on the Nature Park Website

www.depauw.edu/univ/naturepark
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