Articles | Volume 15, issue 10
Biogeosciences, 15, 3223–3241, 2018
Biogeosciences, 15, 3223–3241, 2018

Research article 31 May 2018

Research article | 31 May 2018

The triple oxygen isotope composition of phytoliths as a proxy of continental atmospheric humidity: insights from climate chamber and climate transect calibrations

Anne Alexandre et al.

Related authors

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
Clément Outrequin, Anne Alexandre, Christine Vallet-Coulomb, Clément Piel, Sébastien Devidal, Amaelle Landais, Martine Couapel, Jean-Charles Mazur, Christophe Peugeot, Monique Pierre, Frédéric Prié, Jacques Roy, Corinne Sonzogni, and Claudia Voigt
Clim. Past, 17, 1881–1902,,, 2021
Short summary
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
Anne Alexandre, Elizabeth Webb, Amaelle Landais, Clément Piel, Sébastien Devidal, Corinne Sonzogni, Martine Couapel, Jean-Charles Mazur, Monique Pierre, Frédéric Prié, Christine Vallet-Coulomb, Clément Outrequin, and Jacques Roy
Biogeosciences, 16, 4613–4625,,, 2019
Short summary
Diatom-oxygen isotope record from high-altitude Lake Petit (2200 m a.s.l.) in the Mediterranean Alps: shedding light on a climatic pulse at 4.2 ka
Rosine Cartier, Florence Sylvestre, Christine Paillès, Corinne Sonzogni, Martine Couapel, Anne Alexandre, Jean-Charles Mazur, Elodie Brisset, Cécile Miramont, and Frédéric Guiter
Clim. Past, 15, 253–263,,, 2019
Short summary
Direct uptake of organically derived carbon by grass roots and allocation in leaves and phytoliths: 13C labeling evidence
Anne Alexandre, Jérôme Balesdent, Patrick Cazevieille, Claire Chevassus-Rosset, Patrick Signoret, Jean-Charles Mazur, Araks Harutyunyan, Emmanuel Doelsch, Isabelle Basile-Doelsch, Hélène Miche, and Guaciara M. Santos
Biogeosciences, 13, 1693–1703,,, 2016
Short summary
Unambiguous evidence of old soil carbon in grass biosilica particles
Paul E. Reyerson, Anne Alexandre, Araks Harutyunyan, Remi Corbineau, Hector A. Martinez De La Torre, Franz Badeck, Luigi Cattivelli, and Guaciara M. Santos
Biogeosciences, 13, 1269–1286,,, 2016
Short summary

Related subject area

Biogeochemistry: Stable Isotopes & Other Tracers
Summertime productivity and carbon export potential in the Weddell Sea, with a focus on the waters adjacent to Larsen C Ice Shelf
Raquel F. Flynn, Thomas G. Bornman, Jessica M. Burger, Shantelle Smith, Kurt A. M. Spence, and Sarah E. Fawcett
Biogeosciences, 18, 6031–6059,,, 2021
Short summary
Particulate biogenic barium tracer of mesopelagic carbon remineralization in the Mediterranean Sea (PEACETIME project)
Stéphanie H. M. Jacquet, Christian Tamburini, Marc Garel, Aurélie Dufour, France Van Vambeke, Frédéric A. C. Le Moigne, Nagib Bhairy, and Sophie Guasco
Biogeosciences, 18, 5891–5902,,, 2021
Short summary
Hydrogen and carbon isotope fractionation factors of aerobic methane oxidation in deep-sea water
Shinsuke Kawagucci, Yohei Matsui, Akiko Makabe, Tatsuhiro Fukuba, Yuji Onishi, Takuro Nunoura, and Taichi Yokokawa
Biogeosciences, 18, 5351–5362,,, 2021
Short summary
Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga
Nicolai Schleinkofer, David Evans, Max Wisshak, Janina Vanessa Büscher, Jens Fiebig, André Freiwald, Sven Härter, Horst R. Marschall, Silke Voigt, and Jacek Raddatz
Biogeosciences, 18, 4733–4753,,, 2021
Short summary
Comparing modified substrate-induced respiration with selective inhibition (SIRIN) and N2O isotope approaches to estimate fungal contribution to denitrification in three arable soils under anoxic conditions
Lena Rohe, Traute-Heidi Anderson, Heinz Flessa, Anette Goeske, Dominika Lewicka-Szczebak, Nicole Wrage-Mönnig, and Reinhard Well
Biogeosciences, 18, 4629–4650,,, 2021
Short summary

Cited articles

Affolter, S., Häuselmann, A. D., Fleitmann, D., Häuselmann, P., and Leuenberger, M.: Triple isotope (δD, δ17O, δ18O) study on precipitation, drip water and speleothem fluid inclusions for a Western Central European cave (NW Switzerland), Quat. Sci. Rev., 127, 73–89, 2015. 
Aleman, J., Leys, B., Apema, R., Bentaleb, I., Dubois, M. A., Lamba, B., Lebamba, J., Martin, C., Ngomanda, A., Truc, L., et al.: Reconstructing savanna tree cover from pollen, phytoliths and stable carbon isotopes, J. Veg. Sci., 23, 187–197, 2012. 
Alexandre, A. and Brémond, L.: Comment on the paper in Quaternary International: “Methodological concerns for analysis of phytolith assemblages: Does count size matter?” (C.A.E. Strömberg), Quat. Int., 193, 141–142, 2009. 
Alexandre, A., Meunier, J.-D., Colin, F., and Koud, J.-M.: Plant impact on the biogeochemical cycle of silicon and related weathering processes, Geochim. Cosmochim. Acta, 61, 677–682, 1997. 
Short summary
There is a lack of proxies suitable for reconstructing, in a quantitative way, past changes in continental atmospheric humidity, which is a key climate parameter. Here, we demonstrate through climate chamber and climate transect calibrations that the triple oxygen isotope composition of phytoliths offers a potential for reconstructing changes in relative humidity.
Final-revised paper