Table 2.
Isotopic discrimination of C and N of plants, and the percentage of plant N derived from insect N
| Treatment | δ 13C (‰) | δ 15N (‰) | % of plant N derived from N of insects |
|---|---|---|---|
| I | –31.2 ± 0.1c | –5.20 ± 0.29f | – |
| F | –31.2 ± 0.1c | 8.01 ± 0.32a | 54.6 ± 2.2ab |
| W | –31.4 ± 0.0c | 3.90 ± 0.68b | 67.1 ± 11.9ab |
| A | –31.1 ± 0.3bc | 0.69 ± 0.16d | 10.3 ± 2.8c |
| B | –31.3 ± 0.1c | 2.11 ± 0.17c | 32.7 ± 2.8bc |
| C | –30.6 ± 0.1a | –1.69 ± 0.35e | – |
| C0 | –30.8 ± 0.1ab | 0.09 ± 0.27d | – |
Values are means ± s.e. Different letters show significant differences in each parameter (P < 0.05, post-hoc Duncan’s test, n = 4).
Treatments are C0 = initial group, C = control, B = beetles, A = ants, W = wasps, F = flies, I = root fertilized with inorganic solution.