TABLE 4.
Growth kinetics for microalgal isolates grown to steady state in nitrogen-limited chemostat cultures
| Taxon | Temp (°C) | Steady-state NO3− concn (μM) | μmax with NO3− (h−1) | Knit (μM) | anito (liter · μmol−1 · h−1) | Steady-state NH4+ concn (μM) | μmax with NH4+ (h−1) | Kamm (μM) | aammo (liter · μmol−1 · h−1) |
|---|---|---|---|---|---|---|---|---|---|
| Chaetoceros sp. | 5 | 3 (0.1)a | 0.033 (0.001) | 2.5 | 0.0132 | 3 (0.02) | 0.033 (0.002) | 2.5 | 0.0132 |
| 3 | 14 (0.02) | 0.029 (0.005) | 8.2 | 0.0035 | 7 (0.02) | 0.029 (0.001) | 4.2 | 0.0069 | |
| 1 | 21.5 (0.2) | 0.022 (0.0001) | 4.7 | 0.0047 | NMb | 0.022 (0.004) | NM | NM | |
| Chaetoceros curvisetum | 22 | 3 (0.1) | 0.028 (0.0001) | 1.7 | 0.0165 | 28.7 (0.1) | 0.0284 (0.009) | 16.5 | 0.0017 |
| 17 | 6.5 (0.01) | 0.027 (0.003) | 3.3 | 0.0082 | 38.6 (0.3) | 0.0252 (0.001) | 14 | 0.0018 | |
| 12 | 42.4 (0.3) | 0.02 (0.001) | 5.7 | 0.0035 | 47.4 (0.5) | 0.019 (0.001) | 5.3 | 0.0036 | |
| Dunaliella tertiolecta | 25 | 5.5 (0.04) | 0.078 (0.01) | 19.1 | 0.0041 | 9 (0.05) | 0.068 (0.007) | 25 | 0.0027 |
| 20 | 14 (0.05) | 0.1 (0.001) | 63.4 | 0.0016 | 7.8 (0.3) | 0.087 (0.001) | 30 | 0.0029 | |
| 15 | 18 (0.2) | 0.095 (0.001) | 77 | 0.0012 | 8 (0.4) | 0.059 (0.0001) | 18 | 0.0033 | |
| 10 | 47 (0.1) | 0.045 (0.005) | 71 | 0.0006 | 13.4 (0.4) | 0.058 (0.002) | 30 | 0.0019 |
a
The values in parentheses are standard errors of the means (n = 3).
b
NM, not measured.