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Volume 12, issue 4
Biogeosciences, 12, 1237–1247, 2015
https://doi.org/10.5194/bg-12-1237-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 12, 1237–1247, 2015
https://doi.org/10.5194/bg-12-1237-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 26 Feb 2015

Research article | 26 Feb 2015

Vertical partitioning of phosphate uptake among picoplankton groups in the low Pi Mediterranean Sea

A. Talarmin et al.

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Agusti, S.: Viability and niche segregation of Prochlorococcus and Synechococcus cells across the Central Atlantic Ocean, Aquat. Microb. Ecol., 36, 53–59, 2004.
Azam, F., Fenchel, T., Field, J. G., Gray, J. S., Meyer-Reil, L. A., and Thingstad, F.: The Ecological Role of Water-Column Microbes in the Sea, Mar. Ecol.-Prog. Ser., 10, 257–263, 1983.
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Björkman, K., Duhamel, S., and Karl, D. M.: Microbial Group Specific Uptake Kinetics of Inorganic Phosphate and Adenosine-5`-Triphosphate (ATP) in the North Pacific Subtropical Gyre, Frontiers in Microbiology, 3, 189, https://doi.org/10.3389/fmicb.2012.00189, 2012.
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Along a transect in the warm nutrient-depleted Mediterranean Sea, we found that microorganisms shared phosphate resources by using different uptake strategies. Heterotrophic prokaryotes dominated phosphate uptake in the upper layers while cyanobacteria dominated uptake fluxes around the deep chlorophyll maximum depth. Synechococcus seemed well equipped to respond to pulses of phosphate, whereas Prochlorococcus and heterotrophs were more adapted to very low concentrations.
Along a transect in the warm nutrient-depleted Mediterranean Sea, we found that microorganisms...
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