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


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on os-2021-82', Anonymous Referee #1, 20 Oct 2021
  • RC2: 'Comment on os-2021-82', Harri Kuosa, 26 Nov 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Christian Reeder on behalf of the Authors (17 Jan 2022)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (21 Jan 2022) by Markus Meier
RR by Malin Olofsson (21 Jan 2022)
RR by Harri Kuosa (25 Jan 2022)
ED: Publish subject to minor revisions (review by editor) (02 Feb 2022) by Markus Meier
AR by Christian Reeder on behalf of the Authors (03 Feb 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (11 Feb 2022) by Markus Meier
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.