Table 9.
Estimation of sample size of sticky traps required to reliably detect differences in spotted lanternfly abundance between untreated control plots and treated plots with varying effect size (% difference) based on four dates’ observations of the experiment at Blue Marsh Lake in 2020 using a lower one-tailed t-test at α = 0.05 and power = 0.80 on log-transformed counts
| % Difference | 4 July | 10 July | 18 July | 24 July | ||||
|---|---|---|---|---|---|---|---|---|
| MD (24.5) | SD (25.7) | MD (13.7) | SD (14.6) | MD (19.1) | SD (23.0) | MD (17.1) | SD (20.3) | |
| 20 | 294 | 379 | 471 | 282 | ||||
| 30 | 116 | 149 | 184 | 111 | ||||
| 40 | 57 | 73 | 90 | 54 | ||||
| 50 | 31 | 40 | 40 | 30 | ||||
| 60 | 18 | 23 | 29 | 17 | ||||
| 70 | 11 | 14 | 17 | 10 | ||||
| 80 | 6 | 8 | 10 | 6 | ||||
| 90 | 4 | 4 | 5 | 4 |
Mean densities and standard deviation for sticky traps in the untreated control plots on 4, 10, 18, and 24 July are listed as well.