ArticleNature communications2026
Large stocks of permafrost soil organic carbon and nitrogen in Arctic river deltas.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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23 authors.
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Abstract
Arctic deltas are highly dynamic environments at the land-ocean interface that have acted as long-term sinks of sediment, carbon (C), and nitrogen (N). Climate impacts Arctic deltas and their upstream catchments through sea-level rise, altered river discharge, increased sediment fluxes, intensified biogeochemical cycling, and permafrost thaw. As a result, soil C and N in Arctic delta deposits are becoming more bioavailable. Here, we present a C and N inventory for Arctic delta compiled from over 1600 soil samples spanning 17 river deltas. We estimate that Arctic delta deposits store 57.5 ( + 9.2/-8.2) Pg C and 3.8 ( + 0.8/-0.7) Pg N across a combined area of nearly 100,000 km², representing large and potentially vulnerable biogeochemical pools. Our findings underscore the potentially pivotal role of Arctic deltas in the pan-Arctic carbon cycle and highlight their importance as dynamic zones of both C and N storage and release in a rapidly changing Arctic.
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