Table 3.
Photosynthetic characteristics of pioneer species: quantum yield, light compensation point, dark respiration, maximum photosynthetic rate and photosynthetic N use efficiency
| Species | n | Quantum yield (μmol C PPFD−1) | SE | Light compensation point (PPFD) | SE | Dark respiration (μmol m−2 s−1) | SE | P max (μmol m−2 s−1) | SE | PNUE (μmol C mmol N−1 s−1) | SE |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mallotus microcarpus | 15–23 | 0.03 a | 0.00 | 46.0 a | 8.4 | 1.0 a | 0.2 | 12.8 a | 1.3 | 0.125 a | 0.011 |
| M. paniculatus | 15–28 | 0.03 a | 0.00 | 7.4 b | 2.0 | 0.2 b | 0.1 | 8.6 a | 0.7 | 0.104 a | 0.007 |
| Macaranga denticulata | 16–17 | 0.04 a | 0.00 | 15.5 b,c | 3.5 | 0.5 c | 0.1 | 9.8 a | 1.4 | 0.122 a | 0.014 |
| Melastoma candidum | 10–16 | 0.04 a | 0.00 | 22.5 c | 2.9 | 0.4 b,c | 0.0 | 10.8 a | 1.1 | 0.138 a | 0.009 |
Values are means
Means followed by different letters are significantly different for species-effect (ANOVA) (Bonferroni post hoc test, P < 0.05)
n, Sample size; SE, standard error of the mean; P max, maximum photosynthetic rate; PNUE, photosynthetic N use efficiency; PPFD, photosynthetic photon flux density