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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 13, issue 20
Biogeosciences, 13, 5697–5717, 2016
https://doi.org/10.5194/bg-13-5697-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 13, 5697–5717, 2016
https://doi.org/10.5194/bg-13-5697-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 17 Oct 2016

Research article | 17 Oct 2016

A dissolved cobalt plume in the oxygen minimum zone of the eastern tropical South Pacific

Nicholas J. Hawco et al.

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Cited articles

Ahlgren, N. A., Noble, A. E., Patton, A. P., Roache-Johnson, K., Jackson, L., Robinson, D., McKay, C., Moore, L. R., Saito, M. A., and Rocap, G.: The unique trace metal and mixed layer conditions of the Costa Rica upwelling dome support a distinct and dense community of Synechococcus, Limnol. Oceanogr., 59, 2166–2184, https://doi.org/10.4319/lo.2014.59.6.2166, 2014.
Alongi, D. M., Boyle, S. G., Tirendi, F., and Payn, C.: Composition and Behaviour of Trace Metals in Post-oxic Sediments of the Gulf of Papua, Papua New Guinea, Estuar. Coast. Shelf S., 42, 197–211, https://doi.org/10.1006/ecss.1996.0015, 1996.
Baars, O. and Croot, P. L.: Dissolved cobalt speciation and reactivity in the eastern tropical North Atlantic, Mar. Chem., https://doi.org/10.1016/j.marchem.2014.10.006, 2015.
Baxter, L. A., Bobrowski, A., Bond, A. M., Heath, G. A, Paul, R. L., Mrzljak, R., and Zarebski, J.: Electrochemical and spectroscopic investigation of the reduction of dimethylglyoxime at mercury electrodes in the presence of cobalt and nickel, Anal. Chem., 70, 1312–1323, https://doi.org/10.1021/ac9703616, 1998.
Biller, D. V. and Bruland, K. W.: Sources and distributions of Mn, Fe, Co, Ni, Cu, Zn, and Cd relative to macronutrients along the central California coast during the spring and summer upwelling season, Mar. Chem., 155, 50–70, https://doi.org/10.1016/j.marchem.2013.06.003, 2013.
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Cobalt is a scarce nutrient required by phytoplankton. We report more than 800 measurements of dissolved cobalt in the South Pacific Ocean, which show high cobalt concentrations in anoxic subsurface waters offshore of Peru. Coastal cobalt sources may be stronger under low oxygen and could fluctuate as climate change is expected to alter the extent of these low-oxygen regions.
Cobalt is a scarce nutrient required by phytoplankton. We report more than 800 measurements of...
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