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Mass-immigration determines the assembly of activated sludge microbial communities

2021; National Academy of Sciences; Volume: 118; Issue: 27 Linguagem: Inglês

10.1073/pnas.2021589118

1091-6490

Giulia Dottorini, Thomas Yssing Michaelsen, Sergey Kucheryavskiy, Kasper Skytte Andersen, Jannie Munk Kristensen, Miriam Peces, Dorottya Sarolta Wágner, Marta Nierychlo, Per Halkjær Nielsen,

Gut microbiota and health

Significance Wastewater treatment plants are engineering technologies used worldwide to protect the environment and human health. Microbial communities sustain these plants, so it is crucial to know the key factors responsible for the community assembly. We show, in contrast to existing understanding, that microbial immigration largely controls the community structure in these plants and that the fate (growth or death) of immigrating species in the plants is controlled by local factors. The community structure was quantitatively predicted by the immigrating microbial community, highlighting the need to revise the way we today understand, design, and manage microbial communities in wastewater treatment plants.