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Volume 13, issue 22
Biogeosciences, 13, 6339–6352, 2016
https://doi.org/10.5194/bg-13-6339-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 13, 6339–6352, 2016
https://doi.org/10.5194/bg-13-6339-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 25 Nov 2016

Research article | 25 Nov 2016

Sources, cycling and export of nitrogen on the Greenland Ice Sheet

Jemma Louise Wadham et al.

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Arendt, K. E., Nielsen, T. G., Rysgaard, S., and Tonnesson, K.: Differences in plankton community structure along the Godthabsfjord, from the Greenland Ice Sheet to offshore waters, Mar. Ecol.-Prog. Ser., 401, 49–62, https://doi.org/10.3354/Meps08368, 2010.
Bamber, J., van den Broeke, M., Ettema, J., Lenaerts, J., and Rignot, E.: Recent large increases in freshwater fluxes from Greenland into the North Atlantic, Geophys. Res. Lett., 39, L19501, https://doi.org/10.1029/2012gl052552, 2012.
Bartholomew, I., Nienow, P., Sole, A., Mair, D., Cowton, T., Palmer, S., and Wadham, J.: Supraglacial forcing of subglacial drainage in the ablation zone of the Greenland ice sheet, Geophys. Res. Lett., 38, L08502, https://doi.org/10.1029/2011gl047063, 2011.
Bhatia, M. P., Das, S. B., Longnecker, K., Charette, M. A., and Kujawinski, E. B.: Molecular characterization of dissolved organic matter associated with the Greenland ice sheet, Geochim. Cosmochim. Ac., 74, 3768–3784, https://doi.org/10.1016/j.gca.2010.03.035, 2010.
Bhatia, M. P., Das, S. B., Xu, L., Charette, M. A., Wadham, J. L., and Kujawinski, E. B.: Organic carbon export from the Greenland ice sheet, Geochim. Cosmochim. Ac., 109, 329–344, https://doi.org/10.1016/j.gca.2013.02.006, 2013.
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Fjord and continental shelf environments in the polar regions are host to some of the planet's most productive ecosystems and support economically important fisheries. A key limiting nutrient for many of these marine phytoplankton is nitrogen. Here we evaluate the potential for a melting Greenland Ice Sheet to supply nitrogen to Arctic coastal ecosystems. We show nitrogen fluxes of a similar order of magnitude to one large Arctic river but yields that are double those typical of Arctic rivers.
Fjord and continental shelf environments in the polar regions are host to some of the planet's...
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