Articles | Volume 24, issue 6
Hydrol. Earth Syst. Sci., 24, 3057–3075, 2020
https://doi.org/10.5194/hess-24-3057-2020
Hydrol. Earth Syst. Sci., 24, 3057–3075, 2020
https://doi.org/10.5194/hess-24-3057-2020

Research article 10 Jun 2020

Research article | 10 Jun 2020

Disentangling temporal and population variability in plant root water uptake from stable isotopic analysis: when rooting depth matters in labeling studies

Valentin Couvreur et al.

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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (02 Jan 2020) by Markus Weiler
AR by Youri Rothfuss on behalf of the Authors (20 Jan 2020)  Author's response    Manuscript
ED: Publish subject to revisions (further review by editor and referees) (02 Feb 2020) by Markus Weiler
ED: Referee Nomination & Report Request started (23 Feb 2020) by Markus Weiler
RR by Anonymous Referee #3 (23 Mar 2020)
ED: Publish subject to minor revisions (review by editor) (13 Apr 2020) by Markus Weiler
AR by Youri Rothfuss on behalf of the Authors (17 Apr 2020)  Author's response    Manuscript
ED: Publish as is (05 May 2020) by Markus Weiler
AR by Youri Rothfuss on behalf of the Authors (06 May 2020)  Author's response    Manuscript
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Short summary
Isotopic labeling of soil water is a broadly used tool for tracing the origin of water extracted by plants and computing root water uptake (RWU) profiles with multisource mixing models. In this study, we show how a method such as this may misconstrue time series of xylem water isotopic composition as the temporal dynamics of RWU by simulating data collected during a tall fescue rhizotron experiment with an isotope-enabled physical soil–root model accounting for variability in root traits.