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flag Nitrogen-fixing microbes found under Arctic sea ice could reshape marine ecosystems as ice declines.

flag Scientists have discovered nitrogen-fixing microbes, called non-cyanobacterial diazotrophs, beneath Arctic sea ice in regions previously thought too cold and dark to support life. flag Found in the Central and Eurasian Arctic, these organisms possess genetic traits for converting atmospheric nitrogen into a usable form, potentially boosting algal growth, carbon absorption, and marine food webs. flag Though active nitrogen fixation hasn't been directly observed, their abundance near ice edges suggests a significant ecological role. flag As Arctic ice declines, these microbes may become more prevalent, altering ecosystem dynamics. flag Researchers say current climate models must account for this previously overlooked process to improve global predictions.

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