In situ measurements of soil and vadose zone water isotopes reveal water storage and fluxes in semi-aird ecosystems

A newer version of this resource is available that replaces this version.
Resource type: Composite Resource
Storage: The size of this resource is 7.3 KB
Created: Aug 26, 2017 at 10:32 p.m.
Last updated: Nov 04, 2017 at 4:05 p.m.
DOI: 10.4211/hs.5e81d3071b1745a297542844859c1318
Citation: See how to cite this resource
Sharing Status: Published
Views: 967
Downloads: 52
+1 Votes: Be the first one to 
Comments: No comments (yet)


These data are from the following publication:
Oerter, E. J., & Bowen, G. (2017). In situ monitoring of H and O stable isotopes in soil water reveals ecohydrologic dynamics in managed soil systems. Ecohydrology, 10(4).


The water cycle in urban and hydrologically-managed settings is subject to perturbations that are dynamic on small spatial and temporal scales, the effects of which may be especially profound in soils. We deploy a membrane inlet-based laser spectroscopy system in conjunction with soil moisture sensors to monitor soil water dynamics and H and O stable isotope ratios (δ H and δ18O values) in a seasonally irrigated urban landscaped garden soil over the course of 9 months between the cessation of irrigation in the autumn and the onset of irrigation through the summer. We find that soil water δ2H and δ18O values predominately reflect seasonal precipitation and irrigation inputs. A comparison of total soil water by cryogenic extraction and mobile soil water measured by in situ water vapor probes, reveals that initial infiltration events after long periods of soil drying (the autumn season in this case) emplace water into the soil matrix that is not easily replaced by, or mixed with, successive pulses of infiltrating soil water. Tree stem xylem water H and O stable isotope composition did not match that of available water sources. These findings suggest that partitioning of soil water into mobile and immobile “pools” and resulting ecohydrologic separation may occur in engineered and hydrologically-managed soils and not be limited to natural settings. The laser spectroscopy method detailed here has potential to yield insights in a variety of Critical Zone and vadose zone studies, potential that is heightened by the simplicity and portability of the system.

Subject Keywords

Resource Level Coverage


Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Near FASB building on UU campus


Start Date:
End Date:



Related Resources

This resource has been replaced by newer version:


Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
United States National Science Foundation iUTAH-innovative Urban Transitions and Arid region Hydro-sustainability NSF Award Number 1208732

How to Cite

Oerter, E. (2017). In situ measurements of soil and vadose zone water isotopes reveal water storage and fluxes in semi-aird ecosystems, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


There are currently no comments

New Comment