Table 3.
Cellular characteristics of P. tricornutum reported in (I) Frada et al. [22] (300 µmol photons m−2 s−1) and (II) Wagner et al. [46] (1000 µmol photons m−2 s−1)
| (I) | (II) | |||||
|---|---|---|---|---|---|---|
| N+ | N− | A | A+W | N+ | N− | |
| Cell abundance (×106 cells mL−1) | 2.3 | 0.8 | 3 | 0.8 | n.d | n.d |
| µmax (day−1) | 0.97 (± 0.10) | 0.21 (± 0.04) | 0.87 (± 0.05) | 1.02 (± 0.03) | 0.35 | 0.18 |
| Chl a (×10−2 pg cell−1) | 20.82 (± 1.84) | 4.08 (± 0.30) | 45.92 (± 6.9) | 23.21 (± 10.5) | n.d | n.d |
| Fa (pg cell−1) | 2.39 (± 0.10) | 4.21 (± 0.33) | 4.33 (± 0.60) | 3.35 (± 0.17) | n.d | n.d |
| Fa productivity (mg L−1 day−1) | 1.83 | 1.12 | 4.33 | 3.13 | n.d | n.d |
| C/N | 7.11 | 14.64 | 6.62 | 6.90 | n.d | n.d |
| Fv/Fm | 0.61 (± 0.10) | 0.26 (± 0.04) | 0.58 (± 0.10) | 0.58 (± 0.06) | n.d | n.d |
Maximum growth rate (µmax), cell abundance, chlorophyll a (chl a), total fatty acids (Fa), total fatty acids productivity (Fa productivity), carbon to nitrogen ratio (C/N), and photosynthetic maximum efficiency of PSII (Fv/Fm) are compared for P. tricornutum in the four conditions (nitrate (N+), nitrogen free (N−), ammonium (A) and ammonium with tungstate (A+W) conditions), as reported in [22] and [46]. Mean (± standard error) values are given. n.d., means no data available