I sampled 5 trees (4 faces per tree, totaling 20 replicates) in my third location: Residential Streets near Churchill Drive Park. Initially, I encountered a problem with road work in the area I had originally planned to sample. As a result, I had to adjust my sampling location to another nearby street that was more accessible. As I was having trouble using the chicken wire to get clear data previously, I opted to use a section of garden fencing that was 5 squares wide and 5 squares high (total 25 squares). Both the size and flexibility of the garden fencing made it much easier to clearly identify lichen abundance per sample area.
Here are the results I have found so far:
Lichen Abundance – North | Lichen Abundance – East | Lichen Abundance – South | Lichen Abundance – West | ||
Zone 3 | Tree 1 | 18 | 0 | 0 | 0 |
Tree 2 | 21 | 24 | 6 | 20 | |
Tree 3 | 2 | 0 | 0 | 0 | |
Tree 4 | 24 | 14 | 9 | 16 | |
Tree 5 | 0 | 0 | 0 | 0 | |
Mean | 13 | 7.6 | 3 | 7.2 |
The results seem to suggest the opposite of my prediction, that lichen abundance is highest on the north face of the tree, followed by east and west, then finally south. I am interested to see if the rest of my sampling supports this trend.