Related Experiment Video
Updated: Aug 29, 2026

Aerobic Biodegradation Testing of Materials Using a Natural Marine Seawater Inoculum and Closed Loop Respirometer
Published on: October 24, 2025
Relations between bacterial biomass and carbon cycle in marine sediments: an early diagenetic model
F Talin1, C Tolla, C Rabouille
1Centre d'Océanologie de Marseille, UMR 6535, Campus de Luminy, 13288 Marseille 08, France.
Abstract:
A new model for early diagenetic processes has been developed through a new formula explicitly accounting for microbial population dynamics. Following a mechanistic approach based on enzymatic reactions, a new model has been proposed for oxic mineralisation and denitrification. It incorporates the dynamics of bacterial metabolism. We find a general formula for inhibition processes of which some other mathematical expressions are particular cases. Moreover a fast numerical algorithm has been developed. It allows us to perform simulations of different diagenetic models in non-steady states. We use this algorithm to compare our model to a classical one (Soetaert et al., 1996). Dynamical evolutions of a perturbation of particulate organic carbon (POC) input are studied for both models. The results are very similar for stationary cases. But with variable inputs, the bacterial biomass dynamics brings about noticeable differences, and these are discussed.
Related Concept Videos
Marine Microbial Ecology
Deep Sea Microbial Ecology
Microbes and the Carbon Cycle
Microbial Mats
Freshwater Microbial Ecology
Microbes and the Sulfur Cycle

