Unexplained hydrogen isotope offsets complicate the identification and quantification of tree water sources in a riparian forest

Barbeta, Adrià; Jones, Sam P.; Clavé, Laura; Wingate, Lisa; Gimeno, Teresa E.; Fréjaville, Bastien; Wohl, Steve; Ogée, Jérôme

doi:https://doi.org/10.5194/hess-23-2129-2019

Articles | Volume 23, issue 4

https://doi.org/10.5194/hess-23-2129-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-23-2129-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 4

Research article

|

26 Apr 2019

Research article |

| 26 Apr 2019

Unexplained hydrogen isotope offsets complicate the identification and quantification of tree water sources in a riparian forest

Adrià Barbeta, Sam P. Jones, Laura Clavé, Lisa Wingate, Teresa E. Gimeno, Bastien Fréjaville, Steve Wohl, and Jérôme Ogée

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Final revised paper (published on 26 Apr 2019)
Supplement to the final revised paper
Preprint (discussion started on 09 Jan 2019)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Comments on Barbeta et al.', Xin Song, 01 Feb 2019
- AC1: 'Response to the interactive comment of Xin Song (Referee)', Adrià Barbeta, 28 Feb 2019
RC2: 'Comment on Barbeta et al.', Juan Pedro Ferrio Diaz, 12 Feb 2019
- AC2: 'Response to the interactive comment of Juan Pedro Ferrio (Referee)', Adrià Barbeta, 28 Feb 2019
SC1: 'Comment on Barbeta et al.', Scott Allen, 06 Mar 2019
- AC3: 'Response to Scott T Allen's comment', Adrià Barbeta, 14 Mar 2019
SC2: 'Follow-up comment on Barbeta et al.', Scott Allen, 22 Mar 2019
- AC4: 'Response to the follow-up comment by Scott Allen', Adrià Barbeta, 26 Mar 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (further review by editor) (27 Mar 2019) by Lixin Wang

AR by Adrià Barbeta on behalf of the Authors (06 Apr 2019) Manuscript

ED: Publish as is (11 Apr 2019) by Lixin Wang

AR by Adrià Barbeta on behalf of the Authors (13 Apr 2019)

Short summary

Plant water sources of a beech riparian forest were monitored using stable isotopes. Isotopic fractionation during root water uptake is usually neglected but may be more common than previously accepted. Xylem water was always more depleted in δ²H than all sources considered, suggesting isotopic discrimination during water uptake or within plant tissues. Thus, the identification and quantification of tree water sources was affected. Still, oxygen isotopes were a good tracer of plant source water.