Table I. Elemental composition of Trichodesmium IMS101 under a matrix of pCO2 and light.
Values represent means of triplicate cultures, sampled over several days, all within exponential phase. Errors are ±1 sd (n > 10).
| Elemental Composition | Acclimation |
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| Low Light (50 μmol Photons m−2 s−1) |
High Light (200 μmol Photons m−2 s−1) |
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| 150 μatm pCO2 | 900 μatm pCO2 | 150 μatm pCO2 | 900 μatm pCO2 | |
| POC (pmol carbon cell−1)a | 3.79 ± 0.09 | 4.51 ± 0.21 | 4.60 ± 0.46 | 5.02 ± 0.57 |
| PON (pmol nitrogen cell−1)a | 0.59 ± 0.03 | 0.88 ± 0.06 | 0.86 ± 0.08 | 1.04 ± 0.09 |
| PP (fmol phosphorus cell−1) | 73 ± 9 | 78 ± 9 | 70 ± 14 | 71 ± 4 |
| Chl a (pg cell−1)b | 0.47 ± 0.04 | 0.72 ± 0.05 | 0.67 ± 0.14 | 0.69 ± 0.08 |
| Carbon:nitrogen (mol:mol)c | 6.41 ± 0.39 | 5.04 ± 0.15 | 5.25 ± 0.19 | 4.85 ± 0.10 |
a
t test: significant difference between high-light acclimations.
b
t test: significant difference between low-light acclimations.
c
One-way ANOVA: significant difference between all acclimations.