@article{fdi:010081325,
  title = {{X}-ray tomography analysis of soil biopores structure under wetting and drying cycles},
  author = {{C}heik, {S}. and {J}ouquet, {P}ascal and {M}aeght, {J}ean-{L}uc and {C}apowiez, {Y}. and {T}ran, {T}. {M}. and {B}ottinelli, {N}icolas},
  editor = {},
  language = {{ENG}},
  abstract = {{S}oil macroporosity is a highly dynamic feature driven by numerous physical and biological processes, of which bioturbation, the movement of water in soil and swelling and shrinking cycles are the main processes. {T}o date, the interaction between these factors, especially how galleries produced by soil fauna respond to rainwater percolation and wetting-drying ({WD}) cycles, remains poorly known. {A} laboratory experiment was carried out to expose soil macrofauna galleries to three different consecutive water flow (simulated rain events of 50, 80 and 110 mm h(-1) in 1 h) and drying cycles in a clayey soil. {X}-ray computed tomography and image analyses were used prior to and after each exposure to assess the water stabilities of galleries and created cracks. {T}he 3{D} properties (volume, diameter, specific surface area and density) of the galleries produced by termites or ants were not statistically influenced by rainwater percolation and {WD} cycles, suggesting a high water stability and life expectancy under natural conditions. {C}onversely, the crack water stability was variable and was probably influenced by the presence of galleries in the same area. {T}his study emphasizes that the macropores created by soil fauna may persist in clayey soil and that there is a need to better understand how cracks and galleries interact. {H}ighlights {E}volution of soil porosity was studied by {X}-ray computed tomography. {G}alleries made by soil fauna were stable and resist to wetting and drying cycles. {C}racks were highly variable and were highly influenced by wetting and drying cycles. {N}o relationship could be evidenced between galleries and cracks.},
  keywords = {cracks ; galleries ; soil porosity ; wetting-drying cycles ; x-ray tomography},
  booktitle = {},
  journal = {{E}uropean {J}ournal of {S}oil {S}cience},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[5 p.]},
  ISSN = {1351-0754},
  year = {2021},
  DOI = {10.1111/ejss.13119},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081325},
}