Question 1 : Are the three most common (=most abundant) tree species distributed
uniformly along the hillside?
From the graph, it is evident that the distribution of oaks was higher at the top than at the bottom quadrant. The population of RM was also lower at the bottom quadrant, but lowest at the 7th quadrant. Lastly, the distribution of TP was highest in quadrant 7 but lowest at the bottom of the hill (Quadrant 8).
Question 2 : Are the size distributions of the three species the same?
Based on the graph, it is evident that most trees, across all the tree species, fall within the 1 to 30 cm circumference. The distribution of RM was zero for circumferences above 120 cm. There were relatively few Oak and TP tree species between 181 and 210 cm in circumference. Wholesomely, the distribution of the trees was different across different circumference ranges.
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Question 3 : If our data are representative of the area, and the total area of the hillside
Examined was 100 m by 300 m, what was the total population size (N) for each of the 3 tree
species on the hill?
The total area sampled: is 1130.8 square meters.
Therefore counted in the area Oak (38), TP (30), and RM (44)
Therefore, if 38 oak were counted in an area of 1130.8, how many would be counted in an area of 30,000 square meters?
(38*30,000)/1130.8 = 1,008 oak trees.
30 TP were counted in 1130.8 m 2; what about a 30,000 m 2 area?
(30*30,000)/1130.8 = 786 trees.
44 RM were counted in an area of 1130.8 m 2 how about a 30,000 m 2 area?
(44*30,000)/1130.8 = 1167 trees.
Typically, the results are based on the assumption that the distribution of the trees will be similar across the board.
Question 4 : For the three most common species, are the large trees more likely to be found at the bottom of the hill?
Assuming that large trees are those that have a circumference of above 100 cm, the distribution of large trees across all 8 quadrants is shown in the graph below.
The tree differs across the board. Assuming that large trees are those whose circumference exceeds 100 cm, large oak trees were more likely to be found at the top of the hill. In the case of RM, no large trees were present at the bottom of the hill. Wholesomely, large trees were more likely to be found on top of the hill than on the bottom section (quadrant 8).
