Table 2 Count results of the number of pulse in three different thresholds after removing the bad data
Density (individuals/0.5 m2) | Pulse number (×103) | |||
|---|---|---|---|---|
Threshold 0.1 | Threshold 0.4 | Threshold 0.7 | ||
5 | 1.060 ± 0.048 | 0.226 ± 0.011 | 0.0469 ± 0.0028 | |
25 | 5.11 ± 0.11 | 1.380 ± 0.023 | 0.218 ± 0.068 | |
50 | 10.26 ± 0.29 | 2.171 ± 0.062 | 0.416 ± 0.014 | |
U test value | Between 5 and 25 | 337.0 | 357.6 | 25.1 |
Between 25 and 50 | 166.1 | 156.3 | 28.6 | |
Between 5 and 50 | 312.9 | 309.0 | 258.7 | |