Abstract
Ongoing climate warming in the Arctic will thaw
permafrost and remobilize substantial terrestrial organic
carbon (OC) pools. Around a quarter of northern permafrost
OC resides in Siberian Yedoma deposits, the oldest form of
permafrost carbon. However, our understanding of the
degradation and fate of this ancient OC in coastal and fluvial
environments still remains rudimentary. Here,
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