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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1111/nph.18113
|2 doi
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|a pubmed25n1128.xml
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Cernusak, Lucas A
|e verfasserin
|4 aut
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|a Do 2 H and 18 O in leaf water reflect environmental drivers differently?
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 03.06.2022
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|a Date Revised 31.07.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2022 The Authors New Phytologist © 2022 New Phytologist Foundation.
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|a We compiled hydrogen and oxygen stable isotope compositions (δ2 H and δ18 O) of leaf water from multiple biomes to examine variations with environmental drivers. Leaf water δ2 H was more closely correlated with δ2 H of xylem water or atmospheric vapour, whereas leaf water δ18 O was more closely correlated with air relative humidity. This resulted from the larger proportional range for δ2 H of meteoric waters relative to the extent of leaf water evaporative enrichment compared with δ18 O. We next expressed leaf water as isotopic enrichment above xylem water (Δ2 H and Δ18 O) to remove the impact of xylem water isotopic variation. For Δ2 H, leaf water still correlated with atmospheric vapour, whereas Δ18 O showed no such correlation. This was explained by covariance between air relative humidity and the Δ18 O of atmospheric vapour. This is consistent with a previously observed diurnal correlation between air relative humidity and the deuterium excess of atmospheric vapour across a range of ecosystems. We conclude that 2 H and 18 O in leaf water do indeed reflect the balance of environmental drivers differently; our results have implications for understanding isotopic effects associated with water cycling in terrestrial ecosystems and for inferring environmental change from isotopic biomarkers that act as proxies for leaf water
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Research Support, Non-U.S. Gov't
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| 650 |
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|a evaporative enrichment
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|a isotopic biomarker
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|a leaf water
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|a relative humidity
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|a stable isotopes
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|a Oxygen Isotopes
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Barbeta, Adrià
|e verfasserin
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|a Bush, Rosemary T
|e verfasserin
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|a Eichstaedt Bögelein, Rebekka
|e verfasserin
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|a Ferrio, Juan Pedro
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|a Flanagan, Lawrence B
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|a Gessler, Arthur
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|a Martín-Gómez, Paula
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|a Hirl, Regina T
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|a Kahmen, Ansgar
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|a Keitel, Claudia
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|a Lai, Chun-Ta
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|a Munksgaard, Niels C
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|a Nelson, Daniel B
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|a Ogée, Jérôme
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|a Roden, John S
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|a Schnyder, Hans
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|a Voelker, Steven L
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|a Wang, Lixin
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|a Stuart-Williams, Hilary
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|a Wingate, Lisa
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|a Yu, Wusheng
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|a Zhao, Liangju
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|a Cuntz, Matthias
|e verfasserin
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 235(2022), 1 vom: 30. Juli, Seite 41-51
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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| 773 |
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|g volume:235
|g year:2022
|g number:1
|g day:30
|g month:07
|g pages:41-51
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|u http://dx.doi.org/10.1111/nph.18113
|3 Volltext
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|a AR
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|d 235
|j 2022
|e 1
|b 30
|c 07
|h 41-51
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