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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 2
Biogeosciences, 14, 285–300, 2017
https://doi.org/10.5194/bg-14-285-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 14, 285–300, 2017
https://doi.org/10.5194/bg-14-285-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 19 Jan 2017

Research article | 19 Jan 2017

The fate of fixed nitrogen in marine sediments with low organic loading: an in situ study

Stefano Bonaglia et al.

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Cited articles

Algesten, G., Wikner, J., Sobek, S., Tranvik, L. J., and Jansson, M.: Seasonal variation of CO2 saturation in the Gulf of Bothnia: Indications of marine net heterotrophy, Global Biogeochem. Cy., 18, GB4021, https://doi.org/10.1029/2004GB002232, 2004.
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Understanding nitrogen (N) cycling mechanisms in the ocean is crucial for improving ecosystem management. Here we study N processes by in situ lander and isotope tracer techniques in – so far overlooked – sediments with low organic loads. Denitrification and anammox are the main N transformation processes. However, we demonstrate high contribution of dissimilatory nitrate reduction to ammonium, which recycles a major portion of fixed N to the water column and sustains primary production.
Understanding nitrogen (N) cycling mechanisms in the ocean is crucial for improving ecosystem...
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