Off Congo waters (Angola Basin, Atlantic Ocean) : a hot spot for cadmium-phosphate fractionation Waeles, M. Maguer, J. F. /Baurand, François Riso, R. D. We report the distribution of cadmium at 13 stations along 5.83 degrees S in the Angola Basin. The studied area (which is influenced by the plume of the Congo River, doming, and relatively high primary production) is characterized by relatively low-circulation regime, which results in a strong oxygen minimum. In subsurface, very low cadmium : phosphate (Cd : P) ratios (0.05-0.10 nmol L-1 : mu mol L-1) were observed below the euphotic zone (depth range = 50-200 m), indicating that mineralization is the main process explaining the Cd-P fractionation. Cd-P decoupling is not restricted to subsurface waters, but occurs also throughout the oxygen minimum zone. An isopycnal analysis of the Cd : P ratio throughout the Atlantic Ocean shows that upper and intermediate waters in the South-east Atlantic are highly altered in terms of Cd-P properties. Benthic inputs at 4000 m were associated with degradation of organic matter with an important siliceous component, but were not accompanied by substantial changes in the Cd : P ratio. 2013 text https://www.documentation.ird.fr/hor/fdi:010060621 fdi:010060621 Waeles M., Maguer J. F., Baurand François, Riso R. D.. Off Congo waters (Angola Basin, Atlantic Ocean) : a hot spot for cadmium-phosphate fractionation. 2013, 58 (4), 1481-1490 EN OCEAN ATLANTIQUE ANGOLA BASSIN