Species Coexistence in Nitrifying Chemostats: A Model of Microbial Interactions
AbstractIn a previous study, the two nitrifying functions (ammonia oxidizing bacteria (AOB) or nitrite-oxidizing bacteria (NOB)) of a nitrification reactor—operated continuously over 525 days with varying inputs—were assigned using a mathematical modeling approach together with the monitoring of bacterial phylotypes. Based on these theoretical identifications, we develop here a chemostat model that does not explicitly include only the resources’ dynamics (different forms of soluble nitrogen) but also explicitly takes into account microbial inter- and intra-species interactions for the four dominant phylotypes detected in the chemostat. A comparison of the models obtained with and without interactions has shown that such interactions permit the coexistence of two competing ammonium-oxidizing bacteria and two competing nitrite-oxidizing bacteria in competition for ammonium and nitrite, respectively. These interactions are analyzed and discussed. View Full-Text
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Dumont, M.; Godon, J.-J.; Harmand, J. Species Coexistence in Nitrifying Chemostats: A Model of Microbial Interactions. Processes 2016, 4, 51.
Dumont M, Godon J-J, Harmand J. Species Coexistence in Nitrifying Chemostats: A Model of Microbial Interactions. Processes. 2016; 4(4):51.Chicago/Turabian Style
Dumont, Maxime; Godon, Jean-Jacques; Harmand, Jérôme. 2016. "Species Coexistence in Nitrifying Chemostats: A Model of Microbial Interactions." Processes 4, no. 4: 51.