Articles | Volume 19, issue 11
Biogeosciences, 19, 2939–2952, 2022
https://doi.org/10.5194/bg-19-2939-2022
Biogeosciences, 19, 2939–2952, 2022
https://doi.org/10.5194/bg-19-2939-2022
Research article
16 Jun 2022
Research article | 16 Jun 2022

Controlling factors on the global distribution of a representative marine non-cyanobacterial diazotroph phylotype (Gamma A)

Zhibo Shao and Ya-Wei Luo

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Non-cyanobacterial diazotrophs (NCDs) may be an important player in fixing N2 in the ocean. By conducting meta-analyses, we found that a representative marine NCD phylotype, Gamma A, tends to inhabit ocean environments with high productivity, low iron concentration and high light intensity. It also appears to be more abundant inside cyclonic eddies. Our study suggests a niche differentiation of NCDs from cyanobacterial diazotrophs as the latter prefers low-productivity and high-iron oceans.
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