Carbon isotope analysis reveals: Canadian Arctic seabed sediments can sequester part of permafrost organic carbon
News dated August 3, 2026: Researchers from the Alfred Wegener Institute and the Center for Marine Environmental Sciences at the University of Bremen conducted a study on permafrost coasts near Herschel Island (Qikiqtaruk) in Canada, finding that not all terrestrial organic carbon released by Arctic permafrost thaw and coastal erosion enters the atmosphere—a significant portion is instead stored in seabed sediments. The findings have been published in the journal *Nature Geoscience*. Arctic terrestrial permafrost ecosystems store approximately 130 billion tons of carbon from organic sources such as plant debris, while marine and river delta sediments contain an additional 40 billion tons. As Arctic warming accelerates...
2026-08-04
