Table 1.
Summary of published results on the physiological responses among floodplain forest tree species that could indicate regulation of water status for the avoidance of drought stress during dry periods
| Physiological trait | Response | Value | Species | Citation |
|---|---|---|---|---|
| Leaf phenology | Senescence | − | None | Parolin et al. (2005) |
| Leaf water potential | Decrease | −1·24 to −2·7 MPa | Laetia corymbulosa | Armbrüster et al. (2004) |
| Photosynthetic CO2 uptake | Decrease | 4–14 µmol CO2 m−2 s−1 | Pseudobombax munguba | Waldhoff et al. (1998) |
| Stomatal conductance | Decrease | <100 mmol m−2 s−1 | None, except Crataeva benthamii | Parolin (2000) |
| Root respiration | Decrease | 50–60 µL O2 g f. wt and 40–90 µL O2 g f. wt | Astrocaryum jauari and Macrolobium acaciifolium (juvenile) | Schlüter (1989) |
| Vitamin E | Increase | α-Tocopherol 6 µg m−2 and δ-tocotrienol 9 µg m−2 | Garcinia brasiliensis (seedling) | Oliveira-Wittmann (2006) |
All traits were measured on plants in the field in the Manaus region except Vitamin E concentrations, which were measured on seedlings subjected to experimental drought.