Table 1. Abundance (individuals L−1) and diversity (number of species) of Rotifera, Cladocera and Copepoda in Bt and non-Bt rice plots.
| Treatment | Rotifera | Cladocera | Copepoda | Total |
| 1st investigation (abundance) | ||||
| non-Bt rice | 10.33±5.17b | 0±0b | 35.33±25.56b | 45.66±29.55b |
| Bt rice 1 | 172.66±74.99a | 29.00±7.57a | 1501.00±651.00a | 1702.66±688.26a |
| Bt rice 2 | 254.67±119.32a | 56.26±12.33a | 1031.67±335.56a | 1342.50±348.50a |
| 1st investigation (number of species) | ||||
| non-Bt rice | 1.33±0.67a | 0±0b | 1.33±0.67b | 2.67±1.33b |
| Bt rice 1 | 4.67±1.20a | 7.00±1.00a | 3.67±0.33a | 15.33±1.20a |
| Bt rice 2 | 3.67±0.33a | 6.33±2.08a | 3.63±0.33a | 15.70±3.00a |
| 2nd investigation (abundance) | ||||
| non-Bt rice | 425.33±107.33b | 4.66±2.33b | 148.00±43.39b | 638.00±69.51b |
| Bt rice 1 | 1291.33±201.17a | 34.33±8.76a | 598.00±150.89a | 1923.67±325.42a |
| Bt rice 2 | 829.67±25.69a | 38.33±10.84a | 521.33±50.11a | 1317.33±63.89a |
| 2nd investigation (number of species) | ||||
| non-Bt rice | 4.33±0.67a | 2.00±0.58b | 3.00±0.58a | 9.33±0.88b |
| Bt rice 1 | 5.67±0.33a | 7.00±1.53a | 3.67±0.33a | 16.33±1.86a |
| Bt rice 2 | 5.00±0.00a | 6.00±0.00a | 4.00±0.00a | 15.00±0.00a |
Non-Bt and Bt rice plots were sprayed with pesticides when rice pests exceeded the action threshold (Table S1). The first and the second investigation were conducted 5 days and 12 days after the final spray, respectively. The values presented in the table are untransformed means ± SE of each treatment. Means followed by the same letter within the same column in each investigation do not differ significantly at p = 0.05 (LSD post hoc test after ANOVA, n = 3).