Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Root functioning modifies seasonal climate.

Jung-Eun Lee1, Rafael S Oliveira, Todd E Dawson

  • 1Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA. jelee@atmos.berkeley.edu

Proceedings of the National Academy of Sciences of the United States of America
|November 23, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Cerrado plant traits (CPT): a database of functional traits across vegetation types in a global biodiversity hotspot.

Annals of botany·2026
Same author

Early evidence of arrested succession in riparian forests after a large savanna wildfire.

Journal of environmental management·2026
Same author

Improved tumor accumulation and photodynamic antitumor efficacy of a PEGylated photosensitizer.

Journal of photochemistry and photobiology. B, Biology·2026
Same author

A 12-Week Randomized, Double-Blind, Placebo-Controlled Trial of <i>Salacia reticulata</i> Extract for Fat-Mass Reduction in Adults with Overweight/Obesity.

Journal of medicinal food·2026
Same author

Hypocalcemia in Dialysis Is Not Associated with Increased Mortality: Evidence from a Population-Based Cohort.

Nutrients·2026
Same author

Rheological Pathways to a Scalable Ruthenium Nuclei-Anchored Carbon Fiber Catalyst.

ACS nano·2026

Hydraulic redistribution (HR) allows Amazonian trees to move soil water vertically at night. This process significantly boosts dry season transpiration and impacts global climate patterns.

Area of Science:

  • Ecology
  • Climate Science
  • Plant Physiology

Background:

  • Hydraulic redistribution (HR) is a process where plant roots move water from moist to dry soil zones.
  • This phenomenon has been observed in Amazonian trees, suggesting a significant role in water cycling.

Purpose of the Study:

  • To incorporate HR into a climate model and assess its impact on regional and global climate.
  • To quantify the effect of HR on photosynthesis and evapotranspiration in the Amazon during the dry season.

Main Methods:

  • Utilized the National Center for Atmospheric Research Community Atmospheric Model Version 2 (CAM2).
  • Simulated the effects of hydraulic redistribution on water movement within the soil profile and its influence on atmospheric processes.

Related Experiment Videos

Main Results:

  • Model simulations showed significant increases in photosynthesis and evapotranspiration in the Amazon during the dry season with HR.
  • HR was estimated to increase dry season transpiration by approximately 40% over the Amazon.
  • Increased transpiration affects seasonal temperature cycles via latent heat changes.

Conclusions:

  • Hydraulic redistribution by Amazonian trees plays a crucial role in sustaining dry season transpiration.
  • Plant root functioning, through HR, has a direct and measurable impact on climate patterns, particularly in drought-stressed regions.