Articles | Volume 18, issue 24
Biogeosciences, 18, 6479–6500, 2021
https://doi.org/10.5194/bg-18-6479-2021

Special issue: Concerted multidisciplinary and multi-platform eddy studies...

Biogeosciences, 18, 6479–6500, 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 et al.

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Cited articles

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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. 
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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.
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