Methanogenic archaea are globally ubiquitous in aerated soils and become active under wet anoxic conditions

The prototypical representatives of the Euryarchaeota —the methanogens—are oxygen sensitive and are thought to occur only in highly reduced, anoxic environments. However, we found methanogens of the genera Methanosarcina and Methanocella to be present in many types of upland soils (including dryland...

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