Articles | Volume 18, issue 24
https://doi.org/10.5194/bg-18-6479-2021
https://doi.org/10.5194/bg-18-6479-2021
Research article
 | 
17 Dec 2021
Research article |  | 17 Dec 2021

Seasonal flux patterns and carbon transport from low-oxygen eddies at the Cape Verde Ocean Observatory: lessons learned from a time series sediment trap study (2009–2016)

Gerhard Fischer, Oscar E. Romero, Johannes Karstensen, Karl-Heinz Baumann, Nasrollah Moradi, Morten Iversen, Götz Ruhland, Marco Klann, and Arne Körtzinger

Related authors

Performance of temperature and productivity proxies based on long-chain alkane-1, mid-chain diols at test: a 5-year sediment trap record from the Mauritanian upwelling
Gerard J. M. Versteegh, Karin A. F. Zonneveld, Jens Hefter, Oscar E. Romero, Gerhard Fischer, and Gesine Mollenhauer
Biogeosciences, 19, 1587–1610, https://doi.org/10.5194/bg-19-1587-2022,https://doi.org/10.5194/bg-19-1587-2022, 2022
Short summary
A 2-decade (1988–2009) record of diatom fluxes in the Mauritanian coastal upwelling: impact of low-frequency forcing and a two-step shift in the species composition
Oscar E. Romero, Simon Ramondenc, and Gerhard Fischer
Biogeosciences, 18, 1873–1891, https://doi.org/10.5194/bg-18-1873-2021,https://doi.org/10.5194/bg-18-1873-2021, 2021
Short summary
Flux variability of phyto- and zooplankton communities in the Mauritanian coastal upwelling between 2003 and 2008
Oscar E. Romero, Karl-Heinz Baumann, Karin A. F. Zonneveld, Barbara Donner, Jens Hefter, Bambaye Hamady, Vera Pospelova, and Gerhard Fischer
Biogeosciences, 17, 187–214, https://doi.org/10.5194/bg-17-187-2020,https://doi.org/10.5194/bg-17-187-2020, 2020
Short summary
Seasonality of archaeal lipid flux and GDGT-based thermometry in sinking particles of high-latitude oceans: Fram Strait (79° N) and Antarctic Polar Front (50° S)
Eunmi Park, Jens Hefter, Gerhard Fischer, Morten Hvitfeldt Iversen, Simon Ramondenc, Eva-Maria Nöthig, and Gesine Mollenhauer
Biogeosciences, 16, 2247–2268, https://doi.org/10.5194/bg-16-2247-2019,https://doi.org/10.5194/bg-16-2247-2019, 2019
Short summary
Coccolithophore fluxes in the open tropical North Atlantic: influence of thermocline depth, Amazon water, and Saharan dust
Catarina V. Guerreiro, Karl-Heinz Baumann, Geert-Jan A. Brummer, Gerhard Fischer, Laura F. Korte, Ute Merkel, Carolina Sá, Henko de Stigter, and Jan-Berend W. Stuut
Biogeosciences, 14, 4577–4599, https://doi.org/10.5194/bg-14-4577-2017,https://doi.org/10.5194/bg-14-4577-2017, 2017
Short summary

Related subject area

Biogeochemistry: Open Ocean
The fingerprint of climate variability on the surface ocean cycling of iron and its isotopes
Daniela König and Alessandro Tagliabue
Biogeosciences, 20, 4197–4212, https://doi.org/10.5194/bg-20-4197-2023,https://doi.org/10.5194/bg-20-4197-2023, 2023
Short summary
Reconstructing the ocean's mesopelagic zone carbon budget: sensitivity and estimation of parameters associated with prokaryotic remineralization
Chloé Baumas, Robin Fuchs, Marc Garel, Jean-Christophe Poggiale, Laurent Memery, Frédéric A. C. Le Moigne, and Christian Tamburini
Biogeosciences, 20, 4165–4182, https://doi.org/10.5194/bg-20-4165-2023,https://doi.org/10.5194/bg-20-4165-2023, 2023
Short summary
Seasonal cycles of biogeochemical fluxes in the Scotia Sea, Southern Ocean: a stable isotope approach
Anna Belcher, Sian F. Henley, Katharine Hendry, Marianne Wootton, Lisa Friberg, Ursula Dallman, Tong Wang, Christopher Coath, and Clara Manno
Biogeosciences, 20, 3573–3591, https://doi.org/10.5194/bg-20-3573-2023,https://doi.org/10.5194/bg-20-3573-2023, 2023
Short summary
Absence of photophysiological response to iron addition in autumn phytoplankton in the Antarctic sea-ice zone
Asmita Singh, Susanne Fietz, Sandy J. Thomalla, Nicolas Sanchez, Murat V. Ardelan, Sébastien Moreau, Hanna M. Kauko, Agneta Fransson, Melissa Chierici, Saumik Samanta, Thato N. Mtshali, Alakendra N. Roychoudhury, and Thomas J. Ryan-Keogh
Biogeosciences, 20, 3073–3091, https://doi.org/10.5194/bg-20-3073-2023,https://doi.org/10.5194/bg-20-3073-2023, 2023
Short summary
Optimal parameters for the ocean's nutrient, carbon, and oxygen cycles compensate for circulation biases but replumb the biological pump
Benoît Pasquier, Mark Holzer, Matthew A. Chamberlain, Richard J. Matear, Nathaniel L. Bindoff, and François W. Primeau
Biogeosciences, 20, 2985–3009, https://doi.org/10.5194/bg-20-2985-2023,https://doi.org/10.5194/bg-20-2985-2023, 2023
Short summary

Cited articles

Benitez-Nelson, C. R. and McGillicuddy, D. J.: Mesoscale physical–biological–biogeochemical linkages in the open ocean: An introduction to the results of the E-Flux and EDDIES programs, Deep-Sea Res. Pt. II, 55, 1133–1138, https://doi.org/10.1016/j.dsr2.2008.03.001, 2008. 
Berger, W. H. and Wefer, G.: Export production: seasonality and intermittency, and paleoceanographic implications, Palaeogeogr., Palaeocl., 89, 245–254, https://doi.org/10.1016/0921-8181(90)90020-D, 1990. 
Boyd, P. W., Claustre, H., Levy, M., Siegel, D. A., and Weber, T.: Multi-faceted particle pumps drive carbon sequestration in the ocean, Nature, 568, 327–335, 2019. 
Bory, A., Jeandel, C., Leblond, N., Vangriesheim, A., Khripounoff, A., Beaufort, L., Rabouille, C., Nicolas, E., Tachikawa, K., Etcheber, H., and Buat-Menard, P.: Particle flux within different productivity regimes off the Mauritanian upwelling zone (EUMELI program), Deep-Sea Res. Pt. II, 48, 2251–2282, 2001. 
Buesseler, K., Antia, A., Chen, M., Fowler, S., Gardner, W., Gustafsson, O., Harada, K., Michaels, A., van der Loeff, M., Sarin, M. M., Steinberg, D., and Trull, T.: An assessment of the use of sediment traps for estimating upper ocean particle fuxes, J. Mar. Res., 65, 345–416, https://doi.org/10.1357/002224007781567621, 2007. 
Download
Short summary
Low-oxygen eddies in the eastern subtropical North Atlantic can form an oasis for phytoplankton growth. Here we report on particle flux dynamics at the oligotrophic Cape Verde Ocean Observatory. We observed consistent flux patterns during the passages of low-oxygen eddies. We found distinct flux peaks in late winter, clearly exceeding background fluxes. Our findings suggest that the low-oxygen eddies sequester higher organic carbon than expected for oligotrophic settings.
Altmetrics
Final-revised paper
Preprint