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BG | Articles | Volume 16, issue 5
Biogeosciences, 16, 999–1017, 2019
https://doi.org/10.5194/bg-16-999-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: GEOVIDE, an international GEOTRACES study along the OVIDE...

Biogeosciences, 16, 999–1017, 2019
https://doi.org/10.5194/bg-16-999-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 13 Mar 2019

Research article | 13 Mar 2019

Evidence of high N2 fixation rates in the temperate northeast Atlantic

Debany Fonseca-Batista et al.

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Cited articles

Agawin, N. S. R., Benavides, M., Busquets, A., Ferriol, P., Stal, L. J., and Arístegui, J.: Dominance of unicellular cyanobacteria in the diazotrophic community in the Atlantic Ocean, Limnol. Oceanogr., 59, 623–637, https://doi.org/10.4319/lo.2014.59.2.0623, 2014. 
Ambar, I. and Fiúza, A. F. G.: Some features of the Portugal Current System: a poleward slope undercurrent, an upwelling-related summer southward flow and an autumn-winter poleward coastal surface current, in: Proceedings of the Second International Conference on Air-Sea Interaction and on Meteorology and Oceanography of the Coastal Zone, edited by: Katsaros, K. B., Fiúza, A. F. G., and Ambar, I., American Meteorological Society, Boston, Massachusetts, USA, 286–287, 1994. 
Benavides, M., Agawin, N., Arístegui, J., Ferriol, P., and Stal, L.: Nitrogen fixation by Trichodesmium and small diazotrophs in the subtropical northeast Atlantic, Aquat. Microb. Ecol., 65, 43–53, https://doi.org/10.3354/ame01534, 2011. 
Blais, M., Tremblay, J.-É., Jungblut, A. D., Gagnon, J., Martin, J., Thaler, M., and Lovejoy, C.: Nitrogen fixation and identification of potential diazotrophs in the Canadian Arctic, Global Biogeochem. Cy., 26, 1–13, https://doi.org/10.1029/2011GB004096, 2012. 
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Dinitrogen fixation and primary production were investigated using stable isotope incubation experiments along two transects off the Western Iberian Margin in May 2014 close to the end of the phytoplankton spring bloom. We observed substantial N2 fixation activities (up to 1533 µmol N m-2 d-1) associated with a predominance of unicellular cyanobacteria and non-cyanobacterial diazotrophs, which seemed to be promoted by the presence of bloom-derived organic matter and excess phosphorus.
Dinitrogen fixation and primary production were investigated using stable isotope incubation...
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