Articles | Volume 20, issue 11
https://doi.org/10.5194/bg-20-2161-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-2161-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Jun 2023
Research article |
| 15 Jun 2023
| 15 Jun 2023
Examination of the parameters controlling the triple oxygen isotope composition of grass leaf water and phytoliths at a Mediterranean site: a model–data approach
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, 13545
Aix-en-Provence, France
present address: Department of Biology and
Geology, University of Almería, 04120 Cañada de San Urbano, Almería, Spain
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, 13545
Aix-en-Provence, France
Ilja M. Reiter
Research Federation ECCOREV, FR3098, CNRS, 13545 Aix-en-Provence,
France
Jean-Philippe Orts
IMBE, CNRS, Université d'Avignon, Aix-Marseille Université,
IRD, 13397 Marseille, France
Christine Vallet-Coulomb
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, 13545
Aix-en-Provence, France
Clément Piel
ECOTRON Européen de Montpellier, UAR 3248, CNRS, Campus de
Baillarguet, 34980 Montferrier-sur-Lez, France
Jean-Charles Mazur
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, 13545
Aix-en-Provence, France
Julie C. Aleman
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, 13545
Aix-en-Provence, France
Corinne Sonzogni
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, 13545
Aix-en-Provence, France
Helene Miche
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, 13545
Aix-en-Provence, France
Jérôme Ogée
INRAE, Bordeaux Sciences Agro, UMR ISPA, 33140 Villenave-d'Ornon,
France
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Cited articles
Aemisegger, F., Spiegel, J. K., Pfahl, S., Sodemann, H., Eugster, W., and
Wernli, H.: Isotope meteorology of cold front passages: A case study
combining observations and modeling, Geophys. Res. Lett., 42, 5652–5660,
https://doi.org/10.1002/2015GL063988, 2015.
Aleman, J., Leys, B., Apema, R., Bentaleb, I., Dubois, M. A., Lamba, B.,
Lebamba, J., Martin, C., Ngomanda, A., Truc, L., Yangakola, J. M., Favier,
C., and Bremond, L.: Reconstructing savanna tree cover from pollen,
phytoliths and stable carbon isotopes, J. Veg. Sci., 23,
187–197, https://doi.org/10.1111/j.1654-1103.2011.01335.x, 2012.
Alexandre, A., Basile-Doelsch, I., Sonzogni, C., Sylvestre, F., Parron, C.,
Meunier, J. D., and Colin, F.: Oxygen isotope analyses of fine silica grains
using laser-extraction technique: Comparison with oxygen isotope data
obtained from ion microprobe analyses and application to quartzite and
silcrete cement investigation, Geochim. Cosmochim. Ac., 70, 2827–2835,
https://doi.org/10.1016/j.gca.2006.03.003, 2006.
Alexandre, A., Bouvet, M., and Abbadie, L.: The role of savannas in the
terrestrial Si cycle: A case-study from Lamto, Ivory Coast, Glob. Planet.
Change, 78, 162–169, https://doi.org/10.1016/j.gloplacha.2011.06.007, 2011.
Alexandre, A., Crespin, J., Sylvestre, F., Sonzogni, C., and Hilbert, D. W.:
The oxygen isotopic composition of phytolith assemblages from tropical
rainforest soil tops (Queensland, Australia): Validation of a new
paleoenvironmental tool, Clim. Past, 8, 307–324,
https://doi.org/10.5194/cp-8-307-2012, 2012.
Alexandre, A., Landais, A., Vallet-Coulomb, C., Piel, C., Devidal, S.,
Pauchet, S., Sonzogni, C., Couapel, M., Pasturel, M., Cornuault, P., Xin,
J., Mazur, J. C., Prié, F., Bentaleb, I., Webb, E., Chalié, F., and
Roy, J.: The triple oxygen isotope composition of phytoliths as a proxy of
continental atmospheric humidity: Insights from climate chamber and climate
transect calibrations, Biogeosciences, 15, 3223–3241,
https://doi.org/10.5194/bg-15-3223-2018, 2018.
Alexandre, A., Webb, E., Landais, A., Piel, C., Devidal, S., Sonzogni, C.,
Couapel, M., Mazur, J., Pierre, M., Prié, F., Vallet-Coulomb, C.,
Outrequin, C., and Roy, J.: Effects of leaf length and development stage on
the triple oxygen isotope signature of grass leaf water and phytoliths:
insights for a proxy of continental atmospheric humidity, Biogeosciences,
16, 4613–4625, https://doi.org/10.5194/bg-16-4613-2019, 2019.
Aron, P. G., Levin, N. E., Beverly, E. J., Huth, T. E., Passey, B. H.,
Pelletier, E. M., Poulsen, C. J., Winkelstern, I. Z., and Yarian, D. A.:
Triple oxygen isotopes in the water cycle, Chem. Geol., 565, 120026,
https://doi.org/10.1016/j.chemgeo.2020.120026, 2021.
Barbeta, A., Burlett, R., Martín-Gómez, P., Fréjaville, B.,
Devert, N., Wingate, L., Domec, J. C., and Ogée, J.: Evidence for
distinct isotopic compositions of sap and tissue water in tree stems:
consequences for plant water source identification, New Phytol., 233,
1121–1132, https://doi.org/10.1111/nph.17857, 2022.
Barbour, M. M., Loucos, K. E., Lockhart, E. L., Shrestha, A., McCallum, D.,
Simonin, K. A., Song, X., Griffani, D. S., and Farquhar, G. D.: Can
hydraulic design explain patterns of leaf water isotopic enrichment in
C3 plants?, Plant Cell Environ., 44, 432–444,
https://doi.org/10.1111/pce.13943, 2021.
Barkan, E. and Luz, B.: High precision measurements of 17O/16O and
18O
Barkan, E. and Luz, B.: Diffusivity fractionations of
H
Belviso, S., Reiter, I. M., Loubet, B., Gros, V., Lathière, J.,
Montagne, D., Delmotte, M., Ramonet, M., Kalogridis, C., Lebegue, B.,
Bonnaire, N., Kazan, V., Gauquelin, T., Fernandez, C., and Genty, B.: A
top-down approach of surface carbonyl sulfide exchange by a Mediterranean
oak forest ecosystem in southern France, Atmos. Chem. Phys., 16, 14909–14923,
https://doi.org/10.5194/acp-16-14909-2016, 2016.
Benson, L. V. and White, J. W. C.: Stable isotopes of oxygen and hydrogen in
the Truckee River-Pyramid Lake surface-water system, 3. Source of water
vapor overlying Pyramid Lake, Limnol. Oceanogr., 39, 1945–1958,
https://doi.org/10.4319/lo.1994.39.8.1945, 1994.
Blonder, B. and Michaletz, S. T.: A model for leaf temperature decoupling
from air temperature, Agr. Forest. Meteorol., 262, 354–360,
https://doi.org/10.1016/j.agrformet.2018.07.012, 2018.
Bögelein, R., Thomas, F. M., and Kahmen, A.: Leaf water 18O and
2H enrichment along vertical canopy profiles in a broadleaved and a
conifer forest tree, Plant Cell Environ., 40, 1086–1103,
https://doi.org/10.1111/pce.12895, 2017.
Brandriss, M. E., O'Neil, J. R., Edlund, M. B., and Stoermer, E. F.: Oxygen
isotope fractionation between diatomaceous silica and water, Geochim.
Cosmochim. Ac., 62, 1119–1125,
https://doi.org/10.1016/S0016-7037(98)00054-4, 1998.
Bremond, L., Alexandre, A., Peyron, O., and Guiot, J.: Grass water stress
estimated from phytoliths in West Africa, J. Biogeogr., 32, 311–327,
https://doi.org/10.1111/j.1365-2699.2004.01162.x, 2005.
Buhay, W. M., Edwards, T. W. D., and Aravena, R.: Evaluating kinetic
fractionation factors used for reconstructions from oxgen and hydrogen
isotope ratios in plant water and cellulose, Geochim. Cosmochim. Ac., 60,
2209–2218, https://doi.org/10.1016/0016-7037(96)00073-7, 1996.
Bush, R. T., Berke, M. A., and Jacobson, A. D.: Plant Water δD and
δ18O of Tundra Species from West Greenland, Arct. Antarct. Alp
Res., 49, 341–358, https://doi.org/10.1657/AAAR0016-025, 2017.
Cao, X. and Liu, Y.: Equilibrium mass-dependent fractionation relationships
for triple oxygen isotopes, Geochim. Cosmochim. Ac., 75, 7435–7445,
https://doi.org/10.1016/j.gca.2011.09.048, 2011.
Cernusak, L. A., Pate, J. S., and Farquhar, G. D.: Diurnal variation in the
stable isotope composition of water and dry matter in fruiting Lupinus
angustifolius under field conditions, Plant Cell Environ., 25, 893–907,
https://doi.org/10.1046/j.1365-3040.2002.00875.x, 2002.
Cernusak, L. A., Barbour, M. M., Arndt, S. K., Cheesman, A. W., English, N.
B., Feild, T. S., Helliker, B. R., Holloway-Phillips, M. M., Holtum, J. A.
M., Kahmen, A., Mcinerney, F. A., Munksgaard, N. C., Simonin, K. A., Song,
X., Stuart-Williams, H., West, J. B., and Farquhar, G. D.: Stable isotopes
in leaf water of terrestrial plants, Plant Cell Environ., 39, 1087–1102,
https://doi.org/10.1111/pce.12703, 2016.
Chapligin, B., Meyer, H., Friedrichsen, H., Marent, A., Sohns, E., and
Hubberten, H.-W.: A high-performance, safer and semi-automated approach for
the δ18O analysis of diatom silica and new methods for removing
exchangeable oxygen, Rapid Commun. Mass Sp., 24,
2655–2664, https://doi.org/10.1002/rcm.4689, 2010.
Collura, L. V. and Neumann, K.: Wood and bark phytoliths of West African
woody plants, Quaternary Int., 434, 142–159,
https://doi.org/10.1016/j.quaint.2015.12.070, 2017.
Corbineau, R., Reyerson, P. E., Alexandre, A., and Santos, G. M.: Towards
producing pure phytolith concentrates from plants that are suitable for
carbon isotopic analysis, Rev. Palaeobot. Palynol., 197, 179–185,
https://doi.org/10.1016/j.revpalbo.2013.06.001, 2013.
Craig, H. and Gordon, L. I.: Deuterium and oxygen-18 variations in the ocean and the marine atmosphere, in: Stable Isotopes in Oceanographic Studies and Paleotemperatures, edited by: Tongiorgi, E., Spoleto, Consiglio Nazionale Delle Ricerche, Laboratorio di Geologia Nucleare, Pisa, Italy, 9–130, 1965.
Crespin, J., Alexandre, A., Sylvestre, F., Sonzogni, C., Paillès, C.,
and Garreta, V.: IR laser extraction technique applied to oxygen isotope
analysis of small biogenic silica samples, Anal. Chem., 80, 2372–2378,
https://doi.org/10.1021/ac071475c, 2008.
Cuntz, M., Ogée, J., Farquhar, G. D., Peylin, P., and Cernusak, L. A.:
Modelling advection and diffusion of water isotopologues in leaves, Plant
Cell Environ., 30, 892–909,
https://doi.org/10.1111/j.1365-3040.2007.01676.x, 2007.
Diao, H., Schuler, P., Goldsmith, G. R., Siegwolf, R. T., Saurer, M., and
Lehmann, M. M.: Technical note: On uncertainties in plant water isotopic
composition following extraction by cryogenic vacuum distillation, Hydrol.
Earth Syst. Sci., 26, 5835–5847, https://doi.org/10.5194/hess-26-5835-2022,
2022.
Ding, T. P., Zhou, J. X., Wan, D. F., Chen, Z. Y., Wang, C. Y., and Zhang,
F.: Silicon isotope fractionation in bamboo and its significance to the
biogeochemical cycle of silicon, Geochim. Cosmochim. Ac., 72, 1381–1395,
https://doi.org/10.1016/j.gca.2008.01.008, 2008.
Dodd, J. P.: Oxygen isotopes in diatom silica: a new understanding of
silica-water oxygen isotope fractionation in diatom frustules and an
application of diatom δ18O values as a record of
paleohydrologic variability in a Middle-Pleistocene lacustrine core from the
Valles Caldera, New Mexico, 1–108, University of New Mexico, https://digitalrepository.unm.edu/eps_etds/17 (last access: 13 June 2023), 2011.
Dodd, J. P. and Sharp, Z. D.: A laser fluorination method for oxygen isotope
analysis of biogenic silica and a new oxygen isotope calibration of modern
diatoms in freshwater environments, Geochim. Cosmochim. Ac., 74, 1381–1390,
https://doi.org/10.1016/j.gca.2009.11.023, 2010.
Dongmann, G., Nürnberg, H. W., Förstel, H., and Wagener, K.: On the
enrichment of H
Farquhar, G. D. and Cernusak, L. A.: On the isotopic composition of leaf
water in the non-steady state, Funct. Plant Biol., 32, 293–303,
https://doi.org/10.1071/FP04232, 2005.
Farquhar, G. D. and Gan, K. S.: On the progressive enrichment of the oxygen
isotopic, Plant Cell Environ., 26, 1579–1597,
https://doi.org/10.1046/j.1365-3040.2003.01013.x, 2003.
Farquhar, G. D. and Lloyd, J.: Carbon and Oxygen Isotope Effects in the
Exchange of Carbon Dioxide between Terrestrial Plants and the Atmosphere,
in: Stable Isotopes and Plant Carbon-Water Relations, Academic Press,
47–70, https://doi.org/10.1016/B978-0-08-091801-3.50011-8, 1993.
Farquhar, G. D., Cernusak, L. A., and Barnes, B.: Heavy water fractionation
during transpiration, Plant Physiol., 143, 11–18,
https://doi.org/10.1104/pp.106.093278, 2007.
Farris, F. and Strain, B. R.: The effects of water-stress on leaf
H
Fiorella, R. P., West, J. B., and Bowen, G. J.: Biased estimates of the
isotope ratios of steady-state evaporation from the assumption of
equilibrium between vapour and precipitation, Hydrol. Process., 33,
2576–2590, https://doi.org/10.1002/hyp.13531, 2019.
Flanagan, L. B. and Farquhar, G. D.: Variation in the carbon and oxygen
isotope composition of plant biomass and its relationship to water-use
efficiency at the leaf- and ecosystem-scales in a northern Great Plains
grassland, Plant Cell Environ., 37, 425–438,
https://doi.org/10.1111/pce.12165, 2014.
Flanagan, L. B., Comstock, J. P., and Ehleringer, J. R.: Comparison of
Modeled and Observed Environmental Influences on the Stable Oxygen and
Hydrogen Isotope Composition of Leaf Water in Phaseolus vulgaris L., Plant
Physiol., 96, 588–596, https://doi.org/10.1104/pp.96.2.588, 1991.
Gan, K. S., Wong, S. C., Yong, J. W. H., and Farquhar, G. D.: 18O
Spatial Patterns of Vein Xylem Water, Leaf Water, and Dry Matter in Cotton
Leaves, Plant Physiol., 130, 1008–1021, https://doi.org/10.1104/pp.007419,
2002.
Garcin, Y., Schwab, V. F., Gleixner, G., Kahmen, A., Todou, G.,
Séné, O., Onana, J. M., Achoundong, G., and Sachse, D.: Hydrogen
isotope ratios of lacustrine sedimentary n-alkanes as proxies of tropical
African hydrology: Insights from a calibration transect across Cameroon,
Geochim. Cosmochim. Ac., 79, 106–126,
https://doi.org/10.1016/j.gca.2011.11.039, 2012.
Garcin, Y., Schefuß, E., Dargie, G. C., Hawthorne, D., Lawson, I. T.,
Sebag, D., Biddulph, G. E., Crezee, B., Bocko, Y. E., Ifo, S. A., Mampouya
Wenina, Y. E., Mbemba, M., Ewango, C. E. N., Emba, O., Bola, P., Kanyama
Tabu, J., Tyrrell, G., Young, D. M., Gassier, G., Girkin, N. T., Vane, C.
H., Adatte, T., Baird, A. J., Boom, A., Gulliver, P., Morris, P. J., Page,
S. E., Sjögersten, S., and Lewis, S. L.: Hydroclimatic vulnerability of
peat carbon in the central Congo Basin, Nature, 612, 277–282,
https://doi.org/10.1038/s41586-022-05389-3, 2022.
Graf, P., Wernli, H., Pfahl, S., and Sodemann, H.: A new interpretative
framework for below-cloud effects on stable water isotopes in vapour and
rain, Atmos. Chem. Phys., 19, 747–765,
https://doi.org/10.5194/acp-19-747-2019, 2019.
Gröning, M., Lutz, H. O., Roller-Lutz, Z., Kralik, M., Gourcy, L., and
Pöltenstein, L.: A simple rain collector preventing water re-evaporation
dedicated for δ18O and δ2H analysis of cumulative
precipitation samples, J. Hydrol., 448–449, 195–200,
https://doi.org/10.1016/j.jhydrol.2012.04.041, 2012.
Grossiord, C., Buckley, T. N., Cernusak, L. A., Novick, K. A., Poulter, B.,
Siegwolf, R. T. W., Sperry, J. S., and McDowell, N. G.: Plant responses to
rising vapor pressure deficit, New Phytol., 226, 1550–1566,
https://doi.org/10.1111/nph.16485, 2020.
Helliker, B. R. and Ehleringer, J. R.: Establishing a grassland signature in
veins: 18O in the leaf water of C3 and C4 grasses, P. Natl. Acad. Sci. USA, 94,
7894–7898, https://doi.org/10.1073/pnas.97.14.7894, 2000.
Helliker, B. R. and Ehleringer, J. R.: Differential 18O enrichment of
leaf cellulose in C3 versus C4 grasses, Funct. Plant Biol.,
29, 435–442, https://doi.org/10.1071/PP01122, 2002a.
Helliker, B. R. and Ehleringer, J. R.: Grass blades as tree rings:
Environmentally induced changes in the oxygen isotope ratio of cellulose
along the length of grass blades, New Phytol., 155, 417–424,
https://doi.org/10.1046/j.1469-8137.2002.00480.x, 2002b.
Hirl, R. T., Schnyder, H., Ostler, U., Schäufele, R., Schleip, I.,
Vetter, S. H., Auerswald, K., Baca Cabrera, J. C., Wingate, L., Barbour, M.
M., and Ogée, J.: The 18O ecohydrology of a grassland ecosystem –
predictions and observations, Hydrol. Earth Syst. Sci., 23, 2581–2600,
https://doi.org/10.5194/hess-23-2581-2019, 2019.
Holloway-Phillips, M., Cernusak, L. A., Barbour, M., Song, X., Cheesman, A.,
Munksgaard, N., Stuart-Williams, H., and Farquhar, G. D.: Leaf vein fraction
influences the Péclet effect and 18O enrichment in leaf water,
Plant Cell Environ., 39, 2414–2427, https://doi.org/10.1111/pce.12792, 2016.
Hu, G. and Clayton, R. N.: Oxygen isotope salt effects at high pressure and
high temperature and the calibration of oxygen isotope geothermometers,
Geochim. Cosmochim. Ac., 67, 3227–3246,
https://doi.org/10.1016/S0016-7037(02)01319-4, 2003.
IPCC: Climate Change 2013: The Physical Science Basis, Contribution of
Working Group I to the Fifth Assessment Report of the Intergovernmental
Panel on Climate Change, edited by: Stocker, T. F., Qin, D., Plattner,
G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V.,
and Midgley, P. M., Cambridge University Press, Cambridge, United Kingdom
and New York, NY, USA, 1585 pp., https://doi.org/10.1017/CBO9781107415324, 2013.
IUSS Working Group WRB: World Reference Base for Soil Resources 2014, update
2015. International soil classification system for naming soils and creating
legends for soil maps, World Soil Resources Reports No. 106, FAO, Rome, ISBN 978-92-5-108369-7,
2015.
Jacob, H. and Sonntag, C.: An 8-year record of the seasonal variation of
2H and 18O in atmospheric water vapour and precipitation at
Heidelberg, Germany, Tellus B, 43 291–300,
https://doi.org/10.1034/j.1600-0889.1991.t01-2-00003.x, 1991.
Kahmen, A., Sachse, D., Arndt, S. K., Tu, K. P., Farrington, H., Vitousek,
P. M., and Dawsona, T. E.: Cellulose δ18O is an index of
leaf-to-air vapor pressure difference (VPD) in tropical plants, P. Natl. Acad. Sci. USA, 108,
1981–1986, https://doi.org/10.1073/pnas.1018906108, 2011.
Kahmen, A., Schefuß, E., and Sachse, D.: Leaf water deuterium enrichment
shapes leaf wax n-alkane δD values of angiosperm plants I:
Experimental evidence and mechanistic insights, Geochim. Cosmochim. Ac., 111,
39–49, https://doi.org/10.1016/j.gca.2012.09.003, 2013.
Knauth, L. P. and Epstein, S.: Hydrogen and oxygen isotope ratios in nodular
and bedded cherts, Geochim. Cosmochim. Ac., 40, 95–1108,
https://doi.org/10.1016/0016-7037(76)90051-X, 1976.
Krabbenhoft, D. P., Bowser, C. J., Anderson, M. P., and Valley, J. W.:
Estimating groundwater exchange with lakes: 1. The stable isotope mass
balance method, Water Resour. Res., 26, 2445–2453,
https://doi.org/10.1029/WR026i010p02445, 1990.
Kumar, S., Soukup, M., and Elbaum, R.: Silicification in grasses: Variation
between different cell types, Front. Plant Sci., 8, 1–8,
https://doi.org/10.3389/fpls.2017.00438, 2017.
Landais, A., Risi, C., Bony, S., Vimeux, F., Descroix, L., Falourd, S., and
Bouygues, A.: Combined measurements of 17Oexcess and d-excess in
African monsoon precipitation: Implications for evaluating convective
parameterizations, Earth Planet Sc. Lett., 298, 104–112,
https://doi.org/10.1016/j.epsl.2010.07.033, 2010.
Leaney, F. W., Osmond, C. B., Allison, G. B., and Ziegler, H.:
Hydrogen-isotope composition of leaf water in C3 and C4 plants:
its relationship to the hydrogen-isotope composition of dry matter, Planta,
164, 215–220, https://doi.org/10.1007/BF00396084, 1985.
Lee, X., Smith, R., and Williams, J.: Water vapour 18O
Leuzinger, S. and Körner, C.: Tree species diversity affects canopy leaf
temperatures in a mature temperate forest, Agr. Forest. Meteorol., 146, 29–37,
https://doi.org/10.1016/j.agrformet.2007.05.007, 2007.
Li, S., Levin, N. E., Soderberg, K., Dennis, K. J., and Caylor, K. K.:
Triple oxygen isotope composition of leaf waters in Mpala, central Kenya,
Earth Planet Sc. Lett., 468, 38–50,
https://doi.org/10.1016/j.epsl.2017.02.015, 2017.
Liu, H. T., Schäufele, R., Gong, X. Y., and Schnyder, H.: The δ18O and δ2H of water in the leaf
growth-and-differentiation zone of grasses is close to source water in both
humid and dry atmospheres, New Phytol., 214, 1423–1431,
https://doi.org/10.1111/nph.14549, 2017.
Liu, P., Liu, J., Ji, A., Reinhard, C. T., Planavsky, N. J., Babikov, D.,
Najjar, R. G., and Kasting, J. F.: Triple oxygen isotope constraints on
atmospheric O2 and biological productivity during the mid-Proterozoic,
P. Natl. Acad. Sci USA, 118, e2105074118, https://doi.org/10.1073/pnas.2105074118, 2021.
López, J., Way, D. A., and Sadok, W.: Systemic effects of rising
atmospheric vapor pressure deficit on plant physiology and productivity,
Glob. Change Biol., 27, 1704–1720, https://doi.org/10.1111/gcb.15548, 2021.
Loucos, K. E., Simonin, K. A., Song, X., and Barbour, M. M.: Observed
relationships between leaf H
Luz, B. and Barkan, E.: Variations of 17O
Majoube, M.: Fractionnement en oxygène 18 et en deutérium entre l'eau et sa vapeur, J. Chim. Phys., 68, 1423–1436, https://doi.org/10.1051/jcp/1971681423, 1971.
Merlivat, L.: Molecular diffusivities of H
Monteith, J.: Evaporation and environment, Symp. Soc. Exp. Biol., 19, 205–234,
1965.
Motomura, H., Fujii, T., and Suzuki, M.: Silica deposition in relation to
ageing of leaf tissues in Sasa veitchii (Carrière) Rehder (Poaceae:
Bambusoideae), Ann. Bot., 93, 235–248, https://doi.org/10.1093/aob/mch034,
2004.
Nogué, S., Whicher, K., Baker, A. G., Bhagwat, S. A., and Willis, K. J.:
Phytolith analysis reveals the intensity of past land use change in the
Western Ghats biodiversity hotspot, Quaternary Int., 437, 82–89,
https://doi.org/10.1016/j.quaint.2015.11.113, 2017.
Ogée, J., Cuntz, M., Peylin, P., and Bariac, T.: Non-steady-state,
non-uniform transpiration rate and leaf anatomy effects on the progressive
stable isotope enrichment of leaf water along monocot leaves, Plant Cell
Environ., 30, 367–387, https://doi.org/10.1111/j.1365-3040.2006.01621.x,
2007.
O'Neil, J. R. and Clayton, R. N.: Oxygen isotope geothermometry, in: Isotope and Cosmic Chemistry, edited by: Craig, H. et al., North-Holland, Amsterdam, 157–168, 1964.
Outrequin, C., Alexandre, A., Vallet-Coulomb, C., Piel, C., Devidal, S., Landais, A., Couapel, M., Mazur, J.-C., Peugeot, C., Pierre, M., Prié, F., Roy, J., Sonzogni, C., and Voigt, C.: The triple oxygen isotope composition of phytoliths, a new proxy of atmospheric relative humidity: controls of soil water isotope composition, temperature, CO2 concentration and relative humidity, Clim. Past, 17, 1881–1902, https://doi.org/10.5194/cp-17-1881-2021, 2021.
Penchenat, T., Vimeux, F., Daux, V., Cattani, O., Viale, M., Villalba, R.,
Srur, A., and Outrequin, C.: Isotopic Equilibrium Between Precipitation and
Water Vapor in Northern Patagonia and Its Consequences on δ18O cellulose Estimate, J. Geophys. Res.-Biogeo., 125, e2019JG005418,
https://doi.org/10.1029/2019JG005418, 2020.
Perry, C. C., Williams, R. J. P., and Fry, S. C.: Cell Wall Biosynthesis
during Silicification of Grass Hairs, J. Plant Physiol., 126, 437–448,
https://doi.org/10.1016/S0176-1617(87)80028-7, 1987.
Reiter I. M., Castagnoli G., and Rotereau A.: COOPERATE database, https://cooperate.eccorev.fr/db (last access: 8 June 2022), 2015.
Resco de Dios, V., Chowdhury, F. I., Granda, E., Yao, Y., and Tissue, D. T.:
Assessing the potential functions of nocturnal stomatal conductance in
C3 and C4 plants, New Phytol., 223, 1696–1706,
https://doi.org/10.1111/nph.15881, 2019.
Rey-Sánchez, A. C., Slot, M., Posada, J. M., and Kitajima, K.: Spatial
and seasonal variation in leaf temperature within the canopy of a tropical
forest, Clim. Res., 71, 75–89, https://doi.org/10.3354/cr01427, 2016.
Ripullone, F., Matsuo, N., Stuart-Williams, H., Suan, C. W., Borghetti, M.,
Tani, M., and Farquhar, G.: Environmental effects on oxygen isotope
enrichment of leaf water in cotton leaves, Plant Physiol., 146, 729–736,
https://doi.org/10.1104/pp.107.105643, 2008.
Roden, J. S., Lin, G., and Ehleringer, J. R.: A mechanistic model for
interpretation of hydrogen and oxygen isotope ratios in tree-ring cellulose,
Geochim. Cosmochim. Ac., 64, 21–35,
https://doi.org/10.1016/S0016-7037(99)00195-7, 2000.
Sharp, Z. D., Gibbons, J. A., Maltsev, O., Atudorei, V., Pack, A., Sengupta,
S., Shock, E. L., and Knauth, L. P.: A calibration of the triple oxygen
isotope fractionation in the SiO2-H2O system and applications to
natural samples, Geochim. Cosmochim. Ac., 186, 105–119,
https://doi.org/10.1016/j.gca.2016.04.047, 2016.
Shemesh, A., Charles, C. D., and Fairbanks, R. G.: Oxygen Isotopes in
Biogenic Silica: Global Changes in Ocean Temperature and Isotopic
Composition, Science, 256, 1434–1436,
https://doi.org/10.1126/science.256.5062.1434, 1992.
Siebert, S., Ewert, F., Eyshi Rezaei, E., Kage, H., and Graß, R.: Impact
of heat stress on crop yield – On the importance of considering canopy
temperature, Environ. Res. Lett., 9, 044012,
https://doi.org/10.1088/1748-9326/9/4/044012, 2014.
Song, X., Barbour, M. M., Saurer, M., and Helliker, B. R.: Examining the
large-scale convergence of photosynthesis-weighted tree leaf temperatures
through stable oxygen isotope analysis of multiple data sets, New
Phytol., 192, 912–924,
https://doi.org/10.1111/j.1469-8137.2011.03851.x, 2011.
Song, X., Simonin, K. A., Loucos, K. E., and Barbour, M. M.: Modelling
non-steady-state isotope enrichment of leaf water in a gas-exchange cuvette
environment, Plant Cell Environ., 38, 2618–2628,
https://doi.org/10.1111/pce.12571, 2015.
Still, C., Powell, R., Aubrecht, D., Kim, Y., Helliker, B., Roberts, D.,
Richardson, A. D., and Goulden, M.: Thermal imaging in plant and ecosystem
ecology: applications and challenges, Ecosphere, 10, e02768,
https://doi.org/10.1002/ecs2.2768, 2019.
Surma, J., Assonov, S., Bolourchi, M. J., and Staubwasser, M.: Triple oxygen
isotope signatures in evaporated water bodies from the Sistan Oasis, Iran,
Geophys. Res. Lett., 42, 8456–8462, https://doi.org/10.1002/2015GL066475,
2015.
Surma, J., Assonov, S., and Staubwasser, M.: Triple Oxygen Isotope
Systematics in the Hydrologic Cycle, Rev. Mineral. Geochem., 86, 401–428,
https://doi.org/10.2138/rmg.2021.86.12, 2021.
Tierney, J. E., Poulsen, C. J., Montañez, I. P., Bhattacharya, T., Feng,
R., Ford, H. L., Hönisch, B., Inglis, G. N., Petersen, S. V., Sagoo, N.,
Tabor, C. R., Thirumalai, K., Zhu, J., Burls, N. J., Foster, G. L.,
Goddéris, Y., Huber, B. T., Ivany, L. C., Turner, S. K., Lunt, D. J.,
McElwain, J. C., Mills, B. J. W., Otto-Bliesner, B. L., Ridgwell, A., and
Zhang, Y. G.: Past climates inform our future, Science, 370, eaay3701,
https://doi.org/10.1126/science.aay3701, 2020.
Tobin, R. L. and Kulmatiski, A.: Plant identity and shallow soil moisture
are primary drivers of stomatal conductance in the savannas of Kruger
National Park, PLoS One, 13, 1–17,
https://doi.org/10.1371/journal.pone.0191396, 2018.
Treydte, K., Boda, S., Graf Pannatier, E., Fonti, P., Frank, D., Ullrich,
B., Saurer, M., Siegwolf, R., Battipaglia, G., Werner, W., and Gessler, A.:
Seasonal transfer of oxygen isotopes from precipitation and soil to the tree
ring: Source water versus needle water enrichment, New Phytol., 202,
772–783, https://doi.org/10.1111/nph.12741, 2014.
Tsujimura, M., Sasaki, L., Yamanaka, T., Sugimoto, A., Li, S. G.,
Matsushima, D., Kotani, A., and Saandar, M.: Vertical distribution of stable
isotopic composition in atmospheric water vapor and subsurface water in
grassland and forest sites, eastern Mongolia, J. Hydrol., 333, 35–46,
https://doi.org/10.1016/j.jhydrol.2006.07.025, 2007.
Tuthorn, M., Zech, R., Ruppenthal, M., Oelmann, Y., Kahmen, A., del Valle,
H. F., Eglinton, T., Rozanski, K., and Zech, M.: Coupling δ2H
and δ18O biomarker results yields information on relative
humidity and isotopic composition of precipitation – a climate transect
validation study, Biogeosciences, 12, 3913–3924,
https://doi.org/10.5194/bg-12-3913-2015, 2015.
Vallet-Coulomb, C., Couapel, M., and Sonzogni, C.: Improving memory effect
correction to achieve high precision analysis of δ17O, δ18O δ2H, 17O-excess and d-excess in water using
cavity ring-down laser spectroscopy, Rapid Commun. Mass
Sp., 35, e9108, https://doi.org/10.1002/rcm.9108, 2021.
Voelker, S. L., Brooks, J. R., Meinzer, F. C., Roden, J., Pazdur, A.,
Pawelczyk, S., Hartsough, P., Snyder, K., Plavcová, L., and
Šantruček, J.: Reconstructing relative humidity from plant δ18O and δD as deuterium deviations from the global meteoric
water line, Ecol. Appl., 24, 960–975,
https://doi.org/10.1890/13-0988.1, 2014.
Voigt, C., Herwartz, D., Dorador, C., and Staubwasser, M.: Triple oxygen
isotope systematics of evaporation and mixing processes in a dynamic desert
lake system, Hydrol. Earth Syst. Sci., 25, 1211–1228,
https://doi.org/10.5194/hess-25-1211-2021, 2021.
Voigt, C., Vallet-Coulomb, C., Piel, C., and Alexandre, A.: 17O-excess
and d-excess of atmospheric water vapor measured by cavity ring-down
spectrometry: Evidence of a matrix effect and implication for the
calibration procedure, Rapid Commun. Mass Sp., 36, e9227,
https://doi.org/10.1002/rcm.9227, 2022.
Wang, P., Yamanaka, T., Li, X. Y., Wu, X., Chen, B., Liu, Y., Wei, Z., and
Ma, W.: A multiple time scale modeling investigation of leaf water isotope
enrichment in a temperate grassland ecosystem, Ecol. Res., 33, 901–915,
https://doi.org/10.1007/s11284-018-1591-3, 2018.
Webb, E. A. and Longstaffe, F. J.: The oxygen isotopic compositions of
silica phytoliths and plant water in grasses: Implications for the study of
paleoclimate, Geochim. Cosmochim. Ac., 64, 767–780,
https://doi.org/10.1016/S0016-7037(99)00374-9, 2000.
Webb, E. A. and Longstaffe, F. J.: Climatic influences on the oxygen
isotopic composition of biogenic silica in prairie grass, Geochim. Cosmochim.
Ac., 66, 1891–1904, https://doi.org/10.1016/S0016-7037(02)00822-0, 2002.
Webb, E. A. and Longstaffe, F. J.: Identifying the δ18O
signature of precipitation in grass cellulose and phytoliths: Refining the
paleoclimate model, Geochim. Cosmochim. Ac., 70, 2417–2426,
https://doi.org/10.1016/j.gca.2006.02.024, 2006.
Wen, X. F., Zhang, S. C., Sun, X., Yu, G., and Lee, X.: Water vapor and
precipitation isotope ratios in Beijing, China, J. Geophys.
Res.-Atmos., 115, 1–10, https://doi.org/10.1029/2009JD012408,
2010.
Yakir, D., Berry, J. A., Giles, L., and Osmond, C. B.: Isotopic
heterogeneity of water in transpiring leaves: identification of the
component that controls the δ18O of atmospheric O2 and
CO2, Plant Cell Environ., 17, 73–80,
https://doi.org/10.1111/j.1365-3040.1994.tb00267.x, 1994.
Zech, M., Mayr, C., Tuthorn, M., Leiber-Sauheitl, K., and Glaser, B.: Oxygen
isotope ratios (18O
Short summary
Data on past relative humidity (RH) ARE needed to improve its representation in Earth system models. A novel isotope parameter (17O-excess) of plant silica has been developed to quantify past RH. Using comprehensive monitoring and novel methods, we show how environmental and plant physiological parameters influence the 17O-excess of plant silica and leaf water, i.e. its source water. The insights gained from this study will help to improve estimates of RH from fossil plant silica deposits.
Data on past relative humidity (RH) ARE needed to improve its representation in Earth system...
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