Journal
NEW PHYTOLOGIST
Volume 193, Issue 4, Pages 830-841Publisher
WILEY
DOI: 10.1111/j.1469-8137.2011.04039.x
Keywords
biogeochemical cycles; hydraulic lift; hydraulic redistribution (HR); hydrology; mechanisms; nutrient cycling; plant interactions; root properties
Categories
Funding
- MICINN [CGL2007-63718, CGL2010-17081]
- MICINN-FPI [BES2005-9280]
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Hydraulic redistribution (HR) is the passive movement of water between different soil parts via plant root systems, driven by water potential gradients in the soil-plant interface. New data suggest that HR is a heterogeneous and patchy process. In this review we examine the main biophysical and environmental factors controlling HR and its main implications at the plant, community and ecosystem levels. Experimental evidence and the use of novel modelling approaches suggest that HR may have important implications at the community scale, affecting net primary productivity as well as water and vegetation dynamics. Globally, HR may influence hydrological and biogeochemical cycles and, ultimately, climate.
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