Contribution of leaf water uptake to transpiration and water status in arid ecosystems
- Cavallaro, Agustin
- Bucci, Sandra Janet
- Carbonell Silletta, Luisina Marta
- Pereyra, Daniel Augusto
- Arias, Nadia Soledad
- Goldstein, Guillermo Hernan
- Scholz, Fabian Gustavo
DOIAbstract
Foliar water uptake (FWU) could be relevant for plants, allowing them to use alternative water sources than the primary one that is soil water uptake and thus prevent dehydration especially during the dry season in arid/semiarid ecosystems characterized by small and erratic water pulses. The main objective of this study was to evaluate the effects of FWU on leaf water status and its contribution to daily transpiration in an arid ecosystem in southern Argentina. Eight dominant species, including shrubs and grasses, with different rooting depth (2 m) and thus different soil water access, were selected. We hypothesized that FWU is higher in species with shallow roots than in species with permanent water sources and thus FWU enhances plant wate...
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