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Nature 443, 43 (7 September 2006) | doi:10.1038/443043a; Received 29 June 2006; Accepted 17 August 2006; Published online 6 September 2006

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Nitrogen balance and Arctic throughflow

Michiyo Yamamoto-Kawai1, Eddy Carmack1 & Fiona McLaughlin1

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Waters moving east through the Arctic Ocean significantly contribute to nitrogen fixation in the Atlantic.

The Atlantic Ocean contains organisms that fix nitrogen, using up phosphate in the process and causing the waters to be enriched in nitrate relative to phosphate. The balance is redressed by the relatively phosphate-rich waters that flow into the Atlantic from the Arctic Ocean, through Fram Strait and the Canadian Archipelago.

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