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dc.contributor.author
von Freyberg, Jana
dc.contributor.author
Allen, Scott Thomas
dc.contributor.author
Grossiord, Charlotte
dc.contributor.author
Dawson, Todd
dc.date.accessioned
2020-11-04T12:18:58Z
dc.date.available
2020-10-07T14:18:27Z
dc.date.available
2020-10-13T09:25:52Z
dc.date.available
2020-11-04T12:18:58Z
dc.date.issued
2020-11
dc.identifier.issn
2041-210X
dc.identifier.issn
2041-2096
dc.identifier.other
10.1111/2041-210X.13461
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/444949
dc.description.abstract
Stable isotope ratios of water (δ18O, δ2H) have long been used to study a core question in plant ecology and ecohydrology: ‘From where do plants take up water?’ Indeed, decades of research has involved sampling potential plant water sources in the subsurface, classifying those sources as distinct endmembers (e.g. deep vs. shallow soil waters) and then evaluating their contributions to a xylem water sample through mixing‐model analysis to identify the depths of root water uptake. However, more detailed interrogations of the subsurface and plant domains have revealed under‐considered transport and isotopic fractionation phenomena. These now apparent complexities raise new questions and challenge the many past assumptions inherent in endmember‐mixing models that now seem overly simple. Here, we introduce discussions of these recent insights and provide an overview of isotope effects that occur naturally in the root zone and in the plant, as well as artificially during sample handling. Better accounting for these complexities and their associated uncertainties can lead to more accurate and robust study designs, analytical frameworks and, ultimately, inferences. Finally, to more robustly characterize plant water sources using δ18O and δ2H, we provide some practical recommendations that aim at maximizing the isotopic contrast between endmembers and/or minimizing potential uncertainties.
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.subject
ecohydrology
en_US
dc.subject
endmember-mixing models
en_US
dc.subject
plant water uptake
en_US
dc.subject
review
en_US
dc.subject
root zone
en_US
dc.subject
stable water isotopes
en_US
dc.subject
uncertainties
en_US
dc.title
Plant and root‐zone water isotopes are difficult to measure, explain, and predict: Some practical recommendations for determining plant water sources
en_US
dc.type
Review Article
dc.date.published
2020-08-02
ethz.journal.title
Methods in Ecology and Evolution
ethz.journal.volume
11
en_US
ethz.journal.issue
11
en_US
ethz.journal.abbreviated
Methods ecol. evol.
ethz.pages.start
1352
en_US
ethz.pages.end
1367
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Oxford
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-10-07T14:18:49Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2020-11-04T12:19:08Z
ethz.rosetta.lastUpdated
2020-11-04T12:19:08Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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