Articles | Volume 13, issue 22
https://doi.org/10.5194/bg-13-6353-2016
https://doi.org/10.5194/bg-13-6353-2016
Research article
 | 
28 Nov 2016
Research article |  | 28 Nov 2016

Soil carbon dioxide emissions controlled by an extracellular oxidative metabolism identifiable by its isotope signature

Benoit Kéraval, Anne Catherine Lehours, Jonathan Colombet, Christian Amblard, Gaël Alvarez, and Sébastien Fontaine

Viewed

Total article views: 2,458 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
1,288 1,083 87 2,458 227 79 92
  • HTML: 1,288
  • PDF: 1,083
  • XML: 87
  • Total: 2,458
  • Supplement: 227
  • BibTeX: 79
  • EndNote: 92
Views and downloads (calculated since 04 Apr 2016)
Cumulative views and downloads (calculated since 04 Apr 2016)

Cited

Saved (preprint)

Latest update: 13 Dec 2024
Download
Short summary
Soil CO2 emissions are a major determinant of the carbon (C) cycle and its interactions with climate. Here, we show that soil CO2 emissions have two origins: (1) the well-known microbial cell respiration and (2) an extracellular oxidative metabolism (EXOMET) carried out by soil-stabilized enzymes and mineral catalysts. These two metabolisms have distinct C isotope signatures, allowing their detection in soil CO2 emissions.
Altmetrics
Final-revised paper
Preprint