Previous analyses from the tunnel demonstrated that replicate samples from directly adjacent cores had small variations in microbial community structure but highly significant differences when comparing permafrost of different radiocarbon ages located tens of meters apart (19, 27, and 33 Kya) (Mackelprang et al., 2017 ).
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Earth to Mars: A Protocol for Characterizing Permafrost in the Context of Climate Change as an Analog for Extraplanetary Exploration.
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