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Scientists have discovered significant nitrogen fixation occurring under diminishing Arctic sea ice, challenging previous assumptions about polar nutrient cycles. The process appears driven by non-cyanobacterial organisms that thrive in ice-melt conditions, potentially altering our understanding of Arctic productivity.

Unexpected Nitrogen Fixation in Ice-Covered Waters

Recent scientific findings indicate that nitrogen fixation in the Arctic Ocean has been substantially underestimated, according to reports published in Communications Earth & Environment. The research reveals that nitrogen fixation occurs extensively under sea ice, particularly in areas experiencing active ice melt, challenging previous assumptions that excluded ice-covered waters from nitrogen cycle assessments.