Articles | Volume 18, issue 5
https://doi.org/10.5194/bg-18-1857-2021
https://doi.org/10.5194/bg-18-1857-2021
Research article
 | 
18 Mar 2021
Research article |  | 18 Mar 2021

Spatiotemporal patterns of N2 fixation in coastal waters derived from rate measurements and remote sensing

Mindaugas Zilius, Irma Vybernaite-Lubiene, Diana Vaiciute, Donata Overlingė, Evelina Grinienė, Anastasija Zaiko, Stefano Bonaglia, Iris Liskow, Maren Voss, Agneta Andersson, Sonia Brugel, Tobia Politi, and Paul A. Bukaveckas

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Cited articles

Adam, B., Klawonn, I., Svedén, J., Bergkvist, J., Nahar, N., Walve, J., Littmann, S., Whitehouse, M. J., Lavik, G., Kuypers, M. M. M., and Ploug, H.: N2-fixation, ammonium release and N-transfer to the microbial and classical food web within a plankton community, ISME J., 10, 450–459, https://doi.org/10.1038/ismej.2015.126, 2016. 
Asmala, E., Carstensen, J., Conley, D. J., Slomp, C. P., Stadmark, J., and Voss, M.: Efficiency of the coastal filter: Nitrogen and phosphorus removal in the Baltic Sea, Limnol. Oceanogr., 62, S222–S238, https://doi.org/10.1002/lno.10644, 2017. 
Bangel, H., Schernewski, G., Bachor, A., and Landsberg-Uczciwek, M.: Spatial pattern and long-term development of water quality in the Oder Estuary, in: The Oder Estuary–against the background of the European Water Framework Directive 57, edited by: Schernewski, G, and Dolch, T., Marine Science Reports, Warnemünde, Germany, 17–65, 2004. 
Bentzon-Tilia, M., Traving, S. J., Mantikci, M., Knudsen-Leerbeck, H., Hansen, J. L. S., Markager, S., and Riemann, L.: Significant N2 fixation by heterotrophs, photoheterotrophs and heterocystous cyanobacteria in two temperate estuaries, ISME J., 9, 273–285, https://doi.org/10.1038/ismej.2014.119, 2015. 
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In fresh and brackish waters, algal blooms are often dominated by cyanobacteria, which have the ability to utilize atmospheric nitrogen. Cyanobacteria are also unusual in that they float to the surface and are dispersed by wind-driven currents. Their patchy and dynamic distribution makes it difficult to track their abundance and quantify their effects on nutrient cycling. We used remote sensing to map the distribution of cyanobacteria in a large Baltic lagoon and quantify their contributions.
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