Thick-shelled, grazer-protected diatoms decouple ocean carbon and silicon cycles in the iron-limited Antarctic Circumpolar Current.

  title={Thick-shelled, grazer-protected diatoms decouple ocean carbon and silicon cycles in the iron-limited Antarctic Circumpolar Current.},
  author={Philipp Assmy and Victor Smetacek and Marina Montresor and Christine Klaas and Joachim Henjes and Volker H. Strass and Jes{\'u}s M Arrieta and Ulrich Bathmann and Gry Mine Berg and Eike Breitbarth and Boris Cisewski and Lars Friedrichs and Nike Fuchs and Gerhard J Herndl and Sandra Jansen and S{\"o}ren Kr{\"a}gefsky and Mikel Latasa and Ilka Peeken and R{\"u}diger R{\"o}ttgers and Renate Scharek and Susanne E Sch{\"u}ller and Sebastian Steigenberger and Adrian Webb and Dieter A. Wolf-Gladrow},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={110 51},
Diatoms of the iron-replete continental margins and North Atlantic are key exporters of organic carbon. In contrast, diatoms of the iron-limited Antarctic Circumpolar Current sequester silicon, but comparatively little carbon, in the underlying deep ocean and sediments. Because the Southern Ocean is the major hub of oceanic nutrient distribution, selective silicon sequestration there limits diatom blooms elsewhere and consequently the biotic carbon sequestration potential of the entire ocean… CONTINUE READING
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