TABLE 1.
Isotope effects for different dO2 treatments, calculated from transformed δ15N2
| ɛ | ɛa at dO2 of:
|
|||||
|---|---|---|---|---|---|---|
| 0 μM | 0 μM | 0.1 μM | 0.1 μM | 0.3 μM | 1.2 μM | |
| ɛ1 | 29.3 ± 0.2a | 26.6 ± 0.8b | 28.8 ± 1.0a | 29.7 ± 0.7a | 28.7 ± 1.1a | 12.4 ± 54b |
| ɛ2 | 16.5 ± 0.8c | 8.6 ± 0.9d | 11.3 ± 1.7e | 13.5 ± 0.9f | 14.7 ± 1.3cf | −2.6 ± 54b |
a
Data are means ± SE (n = 3). Means sharing a letter are not significantly different (P < 0.05) according to the least-significant-difference test for planned comparisons (44). Columns of data with the same dO2 concentration represent results of different runs.
b
See the text.