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Gat, J.R.* ; Yakir, D.* ; Goodfriend, G.* ; Fritz, P. ; Trimborn, P. ; Lipp, J. ; Gev, I.* ; Adar, E.* ; Waisel, Y.*

Stable isotope composition of water in desert plants.

Plant Soil 298, 31-45 (2007)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
A survey of the stable isotope content of tissue waters of plants from the Negev desert was conducted. Large differences were observed in the extent of enrichment of the heavy isotopes in leaf water relative to local precipitation among different plants. This is apparently caused by the species-dependent stratagems adopted by the plants to cope with water stress, primarily by differences in the depth of water uptake in the soil and through the timing of stomatal openings during the daily cycle. Salt stressed plants showed extreme variability in the isotopic composition of leaf-water. The results show that plants with adaptation to arid conditions can avoid the transpiration regime, which would lead to the strong isotopic enrichment in their leaf water expected under arid conditions. This has implications for the use of stable isotopes in plants as indicators of either plant ecophysiology or paleoclimate.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords stable isotopes; O-18; H-2; desert plants; water stress; leaf water
ISSN (print) / ISBN 0032-079X
e-ISSN 1573-5036
Journal Plant and Soil
Quellenangaben Volume: 298, Issue: 1-2, Pages: 31-45 Article Number: , Supplement: ,
Publisher Springer
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Groundwater Ecology (IGOE)