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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 12, issue 3
Biogeosciences, 12, 863–873, 2015
https://doi.org/10.5194/bg-12-863-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 12, 863–873, 2015
https://doi.org/10.5194/bg-12-863-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 12 Feb 2015

Research article | 12 Feb 2015

New highlights of phytolith structure and occluded carbon location: 3-D X-ray microscopy and NanoSIMS results

A. Alexandre et al.
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Cited articles  
Alexandre, A., Colin F., and Meunier J.-D., Phytoliths as indicators of the biogeochemical turnover of silicon in equatorial forest, Compte-rendus de l'Académie des Sciences, Paris, 319, 453–458, 1994.
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. Ac., 61, 677–682, 1997.
Alexandre, A., Meunier, J. D., Mariotti, A., and Soubies, F.: Late Holocene phytolith and carbon isotope record from a latosol at Salitre, south-central Brazil, Quaternary Res., 51, 187–194, 1999.
Alexandre, A., Bouvet, M., and Abbadie, L.: The role of savannas in the terrestrial Si cycle: a case-study from Lamto, Ivory Coast, Global Planet. Change, 78, 162–169, 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.
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Phytoliths contain occluded organic compounds called phytC. The nature and location of phytC in biogenic silica structures is poorly understood. Here, we reconstructed the 3-D structure of phytoliths using 3-D Xray microscopy. We further evidenced a pool of phytC, continuously distributed in the silica structure, using nanoscale secondary ion mass spectrometry (NanoSIMS). Our findings allowed the re-evaluation of previous suggestions regarding phytC quantification and environmental meaning.
Phytoliths contain occluded organic compounds called phytC. The nature and location of phytC in...
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