Articles | Volume 18, issue 2
Research article
25 Mar 2022
Research article |  | 25 Mar 2022

Salinity as a key control on the diazotrophic community composition in the southern Baltic Sea

Christian Furbo Reeder, Ina Stoltenberg, Jamileh Javidpour, and Carolin Regina Löscher

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Cited articles

Acinas, S. G., Haverkamp, T. H. A., Huisman, J., and Stal, L. J.: Phenotypic and genetic diversification of Pseudanabaena spp. (cyanobacteria), ISME J., 3, 31–46,, 2009. 
Affourtit, J., Zehr, J. P., and Paerl, H. W.: Distribution of nitrogen-fixing microorganisms along the Neuse River Estuary, North Carolina, Microb. Ecol., 41, 114–123,, 2001. 
Anbar, A. D.: Oceans: Elements and evolution, Science, 322, 1481–1483,, 2008. 
Arrigo, K. R.: Marine microorganisms and global nutrient cycles, Nature, 438, 7064,, 2005. 
Bauer, S., Blomqvist, S., and Ingri, J.: Distribution of dissolved and suspended particulate molybdenum, vanadium, and tungsten in the Baltic Sea, Mar. Chem., 196, 135–147,, 2017. 
Short summary
The Baltic Sea is predicted to freshen in the future. To explore the effect of decreasing salinity on N2 fixers, we followed the natural salinity gradient in the Baltic Sea from the Kiel Fjord to the Gotland Basin and identified an N2 fixer community dominated by Nodularia and UCYN-A. A salinity threshold was identified at a salinity of 10, with Nodularia dominating at low and UCYN-A dominating at higher salinity, suggesting a future expansion of Nodularia N2 fixers and a retraction of UCYN-A.