Journal of Statistical Physics

, Volume 167, Issue 3–4, pp 763–776 | Cite as

Subsurface Microbial Ecosystems: A Photon Flux and a Metabolic Cascade

  • Alexander P. Petroff
  • Frank Tejera
  • Albert Libchaber
Article

Abstract

Mud is a porous medium containing a high density of diverse microorganisms. It is out of equilibrium as the energy from a photon flux is dissipated by a cascade of biochemical reactions, mediated by the metabolisms of the constituent organisms. Despite its complexity, microbes in nature self-organize into simple reproducible patterns. We present two experiments in which the dynamics of natural mud coming to steady state are observed and modeled. In the first, the oxygen gradient produced by cyanobacteria in an imposed light gradient is measured. In the second, a thin front of oxygen-consuming microbes forms at the penetration depth of oxygen and moves with the changing oxygen gradient.

Keywords

Ecology Reaction-diffusion Microbial mat Oxygen Pattern formation 

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Alexander P. Petroff
    • 1
  • Frank Tejera
    • 1
  • Albert Libchaber
    • 1
  1. 1.Rockefeller UniversityNew YorkUSA

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