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Articles | Volume 13, issue 4
Articles | Volume 13, issue 4
https://doi.org/10.5194/bg-13-1019-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-1019-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 4
Research article
 | 
23 Feb 2016
Research article |  | 23 Feb 2016

Diurnal variation in the coupling of photosynthetic electron transport and carbon fixation in iron-limited phytoplankton in the NE subarctic Pacific

Nina Schuback, Mirkko Flecken, Maria T. Maldonado, and Philippe D. Tortell

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Short summary
We measured rates of phytoplankton photosynthesis at the level of initial charge separation in PSII and at the level of carbon uptake in iron-limited phytoplankton field assemblages over a diurnal cycle. Our results show significant diurnal uncoupling of the two rates. The uncoupling between rates complicates the derivation of carbon-based estimates of phytoplankton production from rates of charge separation. However, it can be explained as evolutionary adaption to iron limited conditions.
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