Hydraulic lift: Substantial nocturnal water transport between soil layers by Artemisia tridentata roots
- 1 October 1987
- journal article
- research article
- Published by Springer Nature in Oecologia
- Vol. 73 (4) , 486-489
- https://doi.org/10.1007/bf00379405
Abstract
Diel soil water potential fluctuations reflected daytime depletion and nocturnal resupply of water in upper soil layers. Transpiration suppression experiments demonstrated that water absorption by roots caused the daytime depletion. The soil water potential data and experimental results suggest that at night water absorbed from moist soil by deeper roots is transported to and lost from roots into drier upper soil layers. The deeper roots appear to absorb and transport water both day and night. Implications for the efficiency of deep roots and water storage, nutrient uptake and water parasitism in upper soil layers are discussed.Keywords
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