Articles | Volume 27, issue 2
https://doi.org/10.5194/hess-27-431-2023
https://doi.org/10.5194/hess-27-431-2023
Research article
 | 
19 Jan 2023
Research article |  | 19 Jan 2023

Numerical assessment of morphological and hydraulic properties of moss, lichen and peat from a permafrost peatland

Simon Cazaurang, Manuel Marcoux, Oleg S. Pokrovsky, Sergey V. Loiko, Artem G. Lim, Stéphane Audry, Liudmila S. Shirokova, and Laurent Orgogozo

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Cited articles

Aalto, J., Karjalainen, O., Hjort, J., and Luoto, M.: Statistical Forecasting of Current and Future Circum-Arctic Ground Temperatures and Active Layer Thickness, Geophys. Res. Lett., 45, 4889–4898, https://doi.org/10.1029/2018GL078007, 2018. 
Adamo, P., Crisafulli, P., Giordano, S., Minganti, V., Modenesi, P., Monaci, F., Pittao, E., Tretiach, M., and Bargagli, R.: Lichen and moss bags as monitoring devices in urban areas. Part II: Trace element content in living and dead biomonitors and comparison with synthetic materials, Environ. Pollut., 146, 392–399, https://doi.org/10.1016/j.envpol.2006.03.047, 2007. 
Bachmat, Y. and Bear, J.: On the Concept and Size of a Representative Elementary Volume (Rev), in: Advances in Transport Phenomena in Porous Media, edited by: Bear, J. and Corapcioglu, M. Y., Springer Netherlands, Dordrecht, 3–20, https://doi.org/10.1007/978-94-009-3625-6_1, 1987. 
Baird, A.: Field estimation of macropore functioning and surface hydraulic conductivity in a fen peat, Hydrol. Process., 3, 287–295, https://doi.org/10.1002/(SICI)1099-1085(19970315)11:3<287::AID-HYP443>3.0.CO;2-L, 1997. 
Banfield, J. F., Barker, W. W., Welch, S. A., and Taunton, A.: Biological impact on mineral dissolution: Application of the lichen model to understanding mineral weathering in the rhizosphere, P. Natl. Acad. Sci. USA, 96, 3404–3411, https://doi.org/10.1073/pnas.96.7.3404, 1999. 
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Short summary
Moss, lichen and peat samples are reconstructed using X-ray tomography. Most samples can be cut down to a representative volume based on porosity. However, only homogeneous samples could be reduced to a representative volume based on hydraulic conductivity. For heterogeneous samples, a devoted pore network model is computed. The studied samples are mostly highly porous and water-conductive. These results must be put into perspective with compressibility phenomena occurring in field tests.