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Biogeosciences An interactive open-access journal of the European Geosciences Union
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BG | Volume 15, issue 9
Biogeosciences, 15, 2669–2689, 2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

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

Biogeosciences, 15, 2669–2689, 2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 04 May 2018

Research article | 04 May 2018

Dynamics and controls of heterotrophic prokaryotic production in the western tropical South Pacific Ocean: links with diazotrophic and photosynthetic activity

France Van Wambeke et al.
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Cited articles  
Alonso-Saez, L., Gasol, J. M., Aristegui, J., Vilas, J. C., Vaque, D., Duarte, C. M., and Agusti, S.: Large scale variability in surface bacterial carbon demand and growth efficiency in the subtropical northeast Atlantic Ocean, Limnol. Oceanogr., 52, 533–546, 2007. 
Alonso-Saez, L., Vasquez-Dominguez, E., Cardelus, C., Pinhassi, J., Montserrat Sala, M., Lekunberri, I., Balagué, V., Vila-Costa, M., Unrein, F., Massana, R., Simo, R., and Gasol, J.: Leucine to carbon empirical conversion factor experiments: does bacterial community structure have an influence?, Environ. Microbiol., 12, 2988–2997, 2010. 
Aranguren-Gassis, M., Serret, P., Fernández, E., Herrera, J. L., Dominguez, J. F., Perez, V., and Escanez, J.: Balanced plankton net community metabolism in the oligotrophic North Atlantic subtropical gyre from Lagrangian observations, Deep-Sea Res. Pt. I, 68, 116–122, 2012a. 
Aranguren-Gassis, M., Teira, E., Serret, P., Martínez-García, M., and Fernández, E.: Potential overestimation of bacterial respiration rates in oligotrophic plankton communities, Mar. Ecol. Prog. Ser., 453, 1–10, 2012b. 
Benavides, M., Moisander, P., Berthelot, H., Dittmar, T., Grosso, O., and Bonnet, S.: Mesopelagic N2 Fixation Related to Organic Matter Composition in the Solomon and Bismarck Seas (Southwest Pacific), Plos One, 10, e0143775,, 2015. 
Publications Copernicus
Short summary
The western tropical South Pacific Ocean has recently been shown to be a hotspot for biological nitrogen fixation. In this study, we examined the horizontal and vertical distribution of heterotrophic prokaryotic production alongside photosynthetic rates, nitrogen fixation rates and phosphate turnover times across the western tropical South Pacific Ocean, in order to relate these fluxes to bottom–up controls (related to nitrogen, phosphate and labile C availability).
The western tropical South Pacific Ocean has recently been shown to be a hotspot for biological...