Document Type

Journal Article

Publisher

Blackwell Publishing

Faculty

Faculty of Health, Engineering and Science

School

School of Natural Sciences

RAS ID

19648

Comments

This article was originally published as: Dulaquais G., Boye M., Middag R., Owens S., Puigcorbe V., Buesseler K., Masque P., de Baar H.J.W., Carton X. (2014). Contrasting biogeochemical cycles of cobalt in the surface western Atlantic Ocean. Global Biogeochemical Cycles. Original article available here

Abstract

Dissolved cobalt (DCo; 0.2μm; 10%) to the DCo stock of the mixed layer in the equatorial and north subtropical domains. Biotic and abiotic processes as well as the physical terms involved in the biogeochemical cycle of Co were defined and estimated. This allowed establishing the first global budget of DCo for the upper 100m in the western Atlantic. The biological DCo uptake flux was the dominant sink along the section, as reflected by the overall nutrient-type behavior of DCo. The regeneration varied widely within the different biogeochemical domains, accounting for 10% of the DCo-uptake rate in the subarctic gyre and for up to 85% in southern subtropical domain. These findings demonstrated that the regeneration is likely the prevailing source of DCo in the surface waters of the western Atlantic, except in the subpolar domains where physically driven sources can sustain the DCo biological requirement.

DOI

10.1002/2014GB004903

Access Rights

free_to_read

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