In:
Geophysical Research Letters, American Geophysical Union (AGU), Vol. 44, No. 13 ( 2017-07-16), p. 6904-6913
Kurzfassung:
Diazotrophic cyanobacteria, only phytoplankton group capable to utilize dinitrogen as N source, flourish in warm oceans when phosphate and iron nutrients are available. However, some of the phosphate‐depleted warm waters of the Atlantic Ocean are mysteriously known for their existence of diazotrophs. Upwelling fluxes, atmospheric deposition, and river inputs are depleted in phosphate compared to nitrate in this region. Hence, the reasons behind the source of excess phosphate supply for diazotrophy in this region are not known. Here we have discovered that non‐diazotrophic cyanobacteria create an environment of excess phosphate through a virtual biological membrane for their diazotrophic phylum group members. In an environment of sustained phosphate supply in the oligotrophic waters, iron inputs seem to determine the magnitude of nitrogen fixing rates.
Materialart:
Online-Ressource
ISSN:
0094-8276
,
1944-8007
DOI:
10.1002/2017GL074218
Sprache:
Englisch
Verlag:
American Geophysical Union (AGU)
Publikationsdatum:
2017
ZDB Id:
2021599-X
ZDB Id:
7403-2
SSG:
16,13
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