Optimal enzyme allocation leads to the constrained enzyme hypothesis: the Soil Enzyme Steady Allocation Model (SESAM; v3.1)

Wutzler, Thomas; Reimers, Christian; Ahrens, Bernhard; Schrumpf, Marion

doi:https://doi.org/10.5194/gmd-17-2705-2024

Articles | Volume 17, issue 7

https://doi.org/10.5194/gmd-17-2705-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-17-2705-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 7

Model description paper

|

12 Apr 2024

Model description paper |

| 12 Apr 2024

Optimal enzyme allocation leads to the constrained enzyme hypothesis: the Soil Enzyme Steady Allocation Model (SESAM; v3.1)

Thomas Wutzler, Christian Reimers, Bernhard Ahrens, and Marion Schrumpf

Model code and software

SESAM R version Thomas Wutzler https://github.com/bgctw/sesam

SESAM Julia version Thomas Wutzler https://github.com/bgctw/Sesam.jl

bgctw/sesam: Wutzler23_optimAlloc (gmd_Wutzler23) Thomas Wutzler https://doi.org/10.5281/zenodo.8026318

bgctw/Sesam.jl: GMD_Wutzler23_discussion (gmd_wutzler23) Thomas Wutzler https://doi.org/10.5281/zenodo.8026366

Short summary

Soil microbes provide a strong link for elemental fluxes in the earth system. The SESAM model applies an optimality assumption to model those linkages and their adaptation. We found that a previous heuristic description was a special case of a newly developed more rigorous description. The finding of new behaviour at low microbial biomass led us to formulate the constrained enzyme hypothesis. We now can better describe how microbially mediated linkages of elemental fluxes adapt across decades.