Table 4. Growth rate (μ in day-1), maximum cell concentration (A in log) and latency time (λ in day) (triplicate mean ± SD) for all species and culture conditions and the corresponding two-way ANOVA results (n = 3).
Species | Statistical Results |
Light | Nitrogen | μ (day-1) | A (log) | λ (day) |
---|---|---|---|---|---|---|
E. paludosa | LL | N+ | 0.29 ± 0.06 | 2.56 ± 0.12 | 2.84 ± 0.47 | |
N- | 0.30 ± 0.01 | 2.26 ± 0.10 | 2.80 ± 0.71 | |||
ML | N+ | 0.35 ± 0.01 | 2.48 ± 0.02 | 1.45 ± 0.28 | ||
N- | 0.30 ± 0.02 | 2.00 ± 0.11 | 1.70 ± 0.65 | |||
HL | N+ | 0.37 ± 0.01 | 2.61 ± 0.38 | 1.65 ± 0.16 | ||
N- | 0.28 ± 0.02 | 2.33 ± 0.15 | 1.26 ± 0.60 | |||
Two-way ANOVA | ||||||
Light conditions | P | 0.090 | 0.114 | <0.001*** | ||
N concentration | P | 0.003** | <0.001*** | 0.824 | ||
Interaction | P | 0,020* | 0.597 | 0.582 | ||
N. alexandrina | LL | N+ | 0.67 ± 0.02 | 4.62 ± 0.09 | 4.38 ± 0.07 | |
N- | 0.73 ± 0.02 | 4.65 ± 0.30 | 4.42 ± 0.08 | |||
ML | N+ | 1.05 ± 0.10 | 4.41 ± 0.17 | 3.45 ± 0.38 | ||
N- | 0.83 ± 0.11 | 4.61 ± 0.25 | 1.51 ± 0.52 | |||
HL | N+ | 1.05 ± 0.07 | 4.16 ± 0.16 | 3.56 ± 0.09 | ||
N- | 1.16 ± 0.13 | 4.40 ± 0.20 | 2.65 ± 0.41 | |||
Two-way ANOVA | ||||||
Light conditions | P | <0.001*** | 0.037* | <0.001*** | ||
N concentration | P | 0.694 | 0.131 | <0.001*** | ||
Interaction | P | 0.012* | 0.646 | <0.001*** | ||
Staurosira sp. | LL | N+ | 0.69 ± 0.18 | 2.81 ± 0.96 | 2.65 ± 0.14 | |
N- | 0.61 ± 0.08 | 1.75 ± 0.13 | 2.60 ± 0.31 | |||
ML | N+ | 0.46 ± 0.05 | 2.50 ± 0.56 | 1.65 ± 0.50 | ||
N- | 0.56 ± 0.24 | 2.08 ± 0.05 | 2.66 ± 0.16 | |||
HL | N+ | 0.49 ± 0.12 | 2.35 ± 0.19 | 2.22 ± 1.51 | ||
N- | 0.57 ± 0.04 | 1.80 ± 0.47 | 3.37 ± 0.69 | |||
Two-way ANOVA | ||||||
Light conditions | P | 0.217 | 0.674 | 0.293 | ||
N concentration | P | 0.647 | 0.012* | 0.054 | ||
Interaction | P | 0.497 | 0.499 | 0.296 |
Significance levels: *** for p < 0.001; ** for p < 0.01 and * for p < 0.05. Remarkable value in bold: for details see text.