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Urban/Woods Interface Plot Data

UW Interface Plot Species

Figure 1. Pie Chart Displaying Number of Trees Per Species

This pie chart shows the number of trees per species in the urban/woods interface plot on Country Club Rd. We found thirteen American Beech trees, seven Red Maples, five White Oaks, four Magnolias, three Sweetgums, two Red Oaks, two Shortleaf Pines, and one Dogwood, Green Ash, Laurel Oak, and Sassafrass each. As our plot was close to an urban area, the species of trees were most likely affected by human influence. As a result, there is a diverse set of tree species within our plot as compared to other sections of Battle Park.

Plot 1 age graph

Figure 2. Age Range vs. Number of Trees

This graph shows the differing amounts of trees occupying each age range with 25 year increments. We found that most of the trees standing in the Urban/Woods Interface plot were between 26 and 100 years old, with several trees younger or older. The oldest tree on our plot was a 247 year old White Oak with a breast height diameter of 1.26 meters. This tree stands next to the path leading from Country Club Rd to the cleared area next to the Forest Theatre and is 45.4 meters (or about 148.9 feet) tall. We determined the ages of the trees by using the method described by the Missouri Department of Conservation's website (http://mdc.mo.gov/your-property/your-trees-and-woods/backyard-tree-care/how-old-tree), in which each tree's age was calculated by multiplying its diameter in inches by its species-specific growth factor.

Tree Diameter

The graph to the left expresses the average diameter of the main tree species found on the plot.


The graph to the left showing tree diameter versus tree height serves to illustrate the connection between how wide the tree is with how tall the tree is. Judging by the upward slope of the data points, as well as their tendency to cluster together along that slope, it is evident that there is a positive correlation between the two measurements. That is, the wider the tree is, the taller it tends to be. As the graph includes a variety of species from the plot, and most species are represented multiple times, the conclusion applies to trees in general. To express a correlation for individual species, a greater range of data would have to be collected for each species.