Table 2. The growth conditions (± S.E.) for T. erythraeum IMS101 when cultured under three N-source conditions (N2, NH4+ and NO3-), at a target CO2 concentration (380 μatm), saturating light intensity (400 μmol photons m-2 s-1) and optimal temperature (26 °C).
| Variables | Units | N2 | NH4+ | NO3- |
|---|---|---|---|---|
| pH | Total | 8.18 | 8.18 | 8.19 |
| H+ | nM | 6.6 (0.1) | 6.6 (0.1) | 6.4 (0.2) |
| AT | μM | 2483 (47) | 2427 (59) | 2482 (56) |
| TCO2 | μM | 2066 (41) | 2019 (51) | 2056 (44) |
| HCO3- | μM | 1762 (35) | 1723 (44) | 1746 (33) |
| CO32- | μM | 296 (7) | 288 (9) | 302 (12) |
| CO2 | μM | 8.3 (0.2) | 8.2 (0.3) | 8.0 (0.4) |
| pCO2 | μatm | 300 (8) | 296 (9) | 289 (7) |
| NH4+ | μM | 0.76 (0.13) | 8.33 (0.45) | 0.59 (0.07) |
| NO3- | μM | 0.07 (0.07) | 0.46 (0.07) | 8.24 (1.31) |
| n | 35 | 34 | 10 |
Individual pH values were converted to a H+ concentration, allowing a mean pH value to be calculated.