Articles | Volume 15, issue 19
Biogeosciences, 15, 5761–5778, 2018
https://doi.org/10.5194/bg-15-5761-2018

Special issue: Interactions between planktonic organisms and biogeochemical...

Biogeosciences, 15, 5761–5778, 2018
https://doi.org/10.5194/bg-15-5761-2018

Research article 02 Oct 2018

Research article | 02 Oct 2018

Trichodesmium physiological ecology and phosphate reduction in the western tropical South Pacific

Kyle R. Frischkorn et al.

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Cited articles

Bergman, B., Sandh, G., Lin, S., Larsson, J., and Carpenter, E. J.: Trichodesmium–a widespread marine cyanobacterium with unusual nitrogen fixation properties., FEMS Microbiol. Rev., 37, 286–302, https://doi.org/10.1111/j.1574-6976.2012.00352.x, 2013.
Blain, S., Bonnet, S., and Guieu, C.: Dissolved iron distribution in the tropical and sub tropical South Eastern Pacific, Biogeosciences, 5, 269–280, https://doi.org/10.5194/bg-5-269-2008, 2008.
Bock, N., Van Wambeke, F., Dion, M., and Duhamel, S.: Microbial community structure in the western tropical South Pacific, Biogeosciences, 15, 3909–3925, https://doi.org/10.5194/bg-15-3909-2018, 2018.
Bonnet, S., Caffin, M., Berthelot, H., and Moutin, T.: Hot spot of N2 fixation in the western tropical South Pacific pleads for a spatial decoupling between N2 fixation and denitrification, P. Natl. Acad. Sci. USA, 114, E2800–E2801, https://doi.org/10.1073/pnas.1619514114, 2017.
Bonnet, S., Caffin, M., Berthelot, H., Grosso, O., Benavides, M., Helias-Nunige, S., Guieu, C., Stenegren, M., and Foster, R. A.: In-depth characterization of diazotroph activity across the western tropical South Pacific hotspot of N2 fixation (OUTPACE cruise), Biogeosciences, 15, 4215–4232, https://doi.org/10.5194/bg-15-4215-2018, 2018.
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Short summary
Trichodesmium is a keystone genus of marine cyanobacteria that is estimated to supply nearly half of the ocean’s fixed nitrogen, fuelling primary productivity and the cycling of carbon and nitrogen in the ocean. In our study we characterize Trichodesmium ecology across the western tropical South Pacific using gene and genome sequencing and geochemistry. We detected genes for phosphorus reduction, providing a mechanism for the noted importance of this organism in the ocean's phosphorus cycle.
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