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Old Forest Plot Data

Old Forest Plot Tree Species

Figure 1: Tree Species Distribution (Pie Chart)



This Pie Graph shows the distribution of different tree species in the Old Forst Plot.  The number in each slice is the number of trees of that species in the plot.  Slices with no number on them signify that there is only one tree of that species in the plot.

As can be seen from the graph the most prevelant tree species by far in the plot is the Eastern Redbud with the White Ash being the second most prevalent tree.

The least numerous trees in the plot were the Winged Elm, the Flowing Dogwood, and the Ironwood of which there are one of each.

Box and Whisker Plot

Figure 2: Breast Height Diamaters of Trees (Box and Whisker chart)



This Box and Whisker plot shows the breast height diameter distribution for each tree speices in the plot in centimeters.

Single lines represent trees species of which there was only one tree of that kind on the plot, or that trees of that species all had the same diameter.

The White Oak was the species in our plot with the greatest average diameter.

The smallest diameter species were the Sugar Maple, the Ironwood, and the American Beech.

Eastern Redbuds and White Ashs had a tight distribution overall except for a large outlier for each of the two species with a diameter over twice as large as any of the other trees of its species (Eastern Redbud: 36 cm; White Ash: 46 cm).

Old Forest Tree Ages

Figure 3: Age Distribution of Trees (Histogram)



This histogram shows a distribution of the ages* of the trees in the plot.

Most of the trees in our plot (23) were in between ten and twenty years old.

The majority of the trees were young though there was a small group of trees in between seventy and one hundred years old.

There was one tree in our plot that was over one hundred years old - a White Oak that was ≈140 years old. 

Despite being an undisturbed area of Battle Park, the trees were relatively young. There were a number of large fallen trees which at some point opened up the plot's canopy. We theorized that this resulted in the large number of younger trees.


Old Forest Plot Tree Ages

Figure 4: Average Age of Tree Species (Bar Graph)



This Bar Graph shows the average age of each tree species in the Plot.

The youngest average tree age was the American Beech with an average age of ~9.4 years follwed closly by the Ironwood, Black Gum, and Winged Elm which had average ages of about 12.4, 13.7, 13.4 respectively.

The tree species with the oldest average age was the Mockernut Hickory which avereaged 74.5 years old followed by the White Oak whick averaged 61.2 years old.

Old Forest Tree Heights

Figure 5: Tree Heights (Bar Graph)



This bar graph shows the height of the tallest specimen of each tree species in feet.

The tallest tree in the plot was a White Oak that was about 46 feet tall followed by a Red Maple that was about 40 feet tall.

The smallest tree species in the plot was the American Beech with the tallest specimen at 14.5 feet followed by the Flowring Dogwood which was 15 feet tall.



*All ages are approximate and calculated using the breast height diameter of each tree and a growth factor for each speices.