Articles | Volume 15, issue 21
https://doi.org/10.5194/bg-15-6503-2018
https://doi.org/10.5194/bg-15-6503-2018
Research article
 | 
06 Nov 2018
Research article |  | 06 Nov 2018

Biogenic silica production and diatom dynamics in the Svalbard region during spring

Jeffrey W. Krause, Carlos M. Duarte, Israel A. Marquez, Philipp Assmy, Mar Fernández-Méndez, Ingrid Wiedmann, Paul Wassmann, Svein Kristiansen, and Susana Agustí

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Cited articles

Allen, J. T., Brown, L., Sanders, R., Moore, C. M., Mustard, A., Fielding, S., Lucas, M., Rixen, M., Savidge, G., and Henson, S.: Diatom carbon export enhanced by silicate upwelling in the northeast Atlantic, Nature, 437, 728–732, 2005. 
Anderson, L. and Dryssen, D.: Chemical-constituents of the arctic ocean in the svalbard area, Oceanol. Acta, 4, 305–311, 1981. 
Arrigo, K. R., van Dijken, G., and Pabi, S.: Impact of a shrinking Arctic ice cover on marine primary production, Geophys. Res. Lett., 35, L19603, 2008. 
Assmy, P., Fernández-Méndez, M., Duarte, P., Meyer, A., Randelhoff, A., Mundy, C. J., Olsen, L. M., Kauko, H. M., Bailey, A., and Chierici, M.: Leads in Arctic pack ice enable early phytoplankton blooms below snow-covered sea ice, Sci. Rep.-UK, 7, 40850, https://doi.org/10.1038/srep40850, 2017. 
Banahan, S. and Goering, J. J.: The production of biogenic silica and its accumulation on the southeastern Bering Sea shelf, Cont. Shelf Res., 5, 199–213, 1986. 
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Short summary
Diatoms can dominate the Arctic Ocean spring bloom, the key annual event for regional food webs. Diatom growth requires silicon and this nutrient has been declining in the European Arctic. This study communicates an unprecedented combination of silicon-cycling measurements around Svalbard during the spring and shows that dissolved silicon can limit diatom production. These results suggest an important coupling of silicon and carbon cycling during the spring bloom in the European Arctic.
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