Hydraulic redistribution
noun phrasePronunciation: /haɪˈdɹɔːlɪk ˌriːdɪˈstrɪbjuːʃən/
The passive movement of water from wet soil layers through plant roots to drier soil layers via the plant xylem system, primarily occurring at night when leaf transpiration is minimal. This process helps maintain soil moisture availability and supports plant survival in heterogeneous soil water conditions.
Plain English
Water moving through plant roots from moist soil to dry soil, helping the plant and nearby soil stay hydrated.
Etymology & History
Usage
"Hydraulic redistribution by deep-rooted shrubs during night hours enhanced water availability for shallow-rooted neighboring plants in semi-arid ecosystems."
Style guide notes: Use 'hydraulic redistribution' in preference to older term 'hydraulic lift' in contemporary scientific literature.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
When does hydraulic redistribution primarily occur?
Mainly at night when transpiration is minimal and water moves from roots to drier soil layers.
What ecological benefit does hydraulic redistribution provide?
It increases water availability for neighboring plants and helps maintain soil moisture in heterogeneous soil profiles.
Why Test Candidates on This?
Relevant for advanced ecology and drought physiology research evaluating ecosystem-level water dynamics under stress.
Required skill level: Expert