Hydrographic fronts shape productivity, nitrogen fixation, and microbial community composition in the southern Indian Ocean and the Southern Ocean

Hörstmann, Cora; Raes, Eric J.; Buttigieg, Pier Luigi; Lo Monaco, Claire; John, Uwe; Waite, Anya M.

doi:https://doi.org/10.5194/bg-18-3733-2021

Articles | Volume 18, issue 12

https://doi.org/10.5194/bg-18-3733-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-18-3733-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 12

Research article

|

22 Jun 2021

Research article |

| 22 Jun 2021

Hydrographic fronts shape productivity, nitrogen fixation, and microbial community composition in the southern Indian Ocean and the Southern Ocean

Cora Hörstmann, Eric J. Raes, Pier Luigi Buttigieg, Claire Lo Monaco, Uwe John, and Anya M. Waite

Supplement

https://doi.org/10.5194/bg-18-3733-2021-supplement

Data sets

Nitrogen and carbon processes in the South Indian Ocean and the French Southern and Antarctic Lands Cora Hörstmann, Eric J. Raes, and Anya M. Waite https://doi.org/10.1594/PANGAEA.885896

Model code and software

CoraHoerstmann/MD206_Microbes: (Version 2.0) Cora Hörstmann https://doi.org/10.5281/zenodo.5000001

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Short summary

Microbes are the main drivers of productivity and nutrient cycling in the ocean. We present a combined approach assessing C and N uptake and microbial community diversity across ecological provinces in the Southern Ocean and southern Indian Ocean. Provinces showed distinct genetic fingerprints, but microbial activity varied gradually across regions, correlating with nutrient concentrations. Our study advances the biogeographic understanding of microbial diversity across C and N uptake regimes.