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. 2020 Dec 11;10:21798. doi: 10.1038/s41598-020-78255-9

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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The eastern tropical North Atlantic (A). Zoomed-in working area, as in the white box from (B), around Cape Verde with coded stations indicated (color scale indicates GEBCO bathymetry). CVOO Cape Verde Ocean Observatory, CVN Cape Verde North, S Ref Senghor Reference, S NW Senghor North West, SSE Senghor South East, CVS1 Cape Verde South 1, CVS2, Cape Verde South 2. (B). with color scale indicating satellite-derived net primary productivity (NPP) during cruise MSM49 (estimated according to⁵¹ and obtained from http://sites.science.oregonstate.edu/ocean.productivity), black contours indicating 60, 80 and 100 µmol kg⁻¹ oxygen at 400 m depth (World Ocean Atlas 2018). Red crosses indicate working stations. Maps were produced using python (packages: matplotlib and basemap).