The ancient DNA sheds light on how the region's ecosystem could be impacted by climate change.
DNA from ancient microorganisms, some of which dates back to roughly 1 million years ago, has been discovered beneath the seafloor in Antarctica. The DNA is the oldest ever discovered from seafloor sediments, a new study shows.
The team looked closely at damage patterns within the recovered DNA fragments to establish exactly how old they were. The oldest fragments clocked in at around 1 million years old. Until now, the oldest sedaDNA, which was found locked inside Arctic permafrost, dated to around 650,000 years ago, Science Alert reported.
However, a majority of the DNA samples belong to diatoms — a type of phytoplankton that still exists in the world's oceans today and forms the basis of most marine food webs. —'Doomsday Glacier' is teetering even closer to disaster than scientists thought, new seafloor map shows
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