Table 2.
Classification of Spatial point patterns of common milkweed shoots based on nearest neighbor analysis (NNI) using data from drone and ground surveys across 12 transects. The analysis was conducted in arcmap (version 10.7) using Euclidean distance to calculate nearest neighbor z-scores and corresponding p-values. A significance threshold of p = 0.05 was used; values above this were considered statistically non-significant (i.e. random pattern).
| Transect No. | Ground survey | Drone survey | ||||
|---|---|---|---|---|---|---|
| z-score | p-value | Point patterns | z-score | p-value | Point patterns | |
| 1 | −0.373 | 0.710 | random | 1.633 | 0.102 | random |
| 2 | −2.705 | 0.007 | clustered | −0.787 | 0.431 | random |
| 3 | −1.524 | 0.127 | random | 0.785 | 0.433 | random |
| 4 | 1.433 | 0.152 | random | 1.350 | 0.177 | random |
| 5 | −1.317 | 0.188 | random | −0.190 | 0.850 | random |
| 6 | −0.519 | 0.603 | random | 1.148 | 0.251 | random |
| 7 | −0.292 | 0.770 | random | −0.063 | 0.950 | random |
| 8 | −1.965 | 0.049 | clustered | −0.200 | 0.842 | random |
| 9 | 1.150 | 0.250 | random | 2.408 | 0.016 | dispersed |
| 10 | 0.537 | 0.591 | random | 1.233 | 0.217 | random |
| 11 | −2.259 | 0.024 | clustered | −1.194 | 0.232 | random |
| 12 | 0.776 | 0.438 | random | 2.502 | 0.012 | dispersed |