Articles | Volume 17, issue 2
Research article
21 Apr 2021
Research article |  | 21 Apr 2021

A mosaic of phytoplankton responses across Patagonia, the southeast Pacific and the southwest Atlantic to ash deposition and trace metal release from the Calbuco volcanic eruption in 2015

Maximiliano J. Vergara-Jara, Mark J. Hopwood, Thomas J. Browning, Insa Rapp, Rodrigo Torres, Brian Reid, Eric P. Achterberg, and José Luis Iriarte

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Cited articles

Achterberg, E., Moore, C. M., Henson, S. A., Steigenberger, S., Stohl, A., Eckhardt, S., Avendano, L. C., Cassidy, M., Hembury, D., Klar, J. K., Lucas, M. I., MacEy, A. I., Marsay, C. M., and Ryan-Keogh, T. J.: Natural iron fertilization by the Eyjafjallajokull volcanic eruption, Geophys. Res. Lett., 40, 921–926,, 2013. 
Ahumada, R., Rudolph, A., Gonzalez, E., Fones, G., Saldias, G., and Ahumada Rudolph, R.: Dissolved trace metals in the water column of Reloncavi Fjord, Chile, Lat. Am. J. Aquat. Res., 39, 567–574, 2011. 
Ayris, P. and Delmelle, P.: Volcanic and atmospheric controls on ash iron solubility: A review, Phys. Chem. Earth, 45/46, 103–112,, 2012. 
Baker, A. R. and Croot, P. L.: Atmospheric and marine controls on aerosol iron solubility in seawater, Mar. Chem., 120, 4–13,, 2010. 
Balseiro, E., Souza, M. S., Olabuenaga, I. S., Wolinski, L., Navarro, M. B., Laspoumaderes, C., and Modenutti, B.: Effect of the Puyehue-Cordon Caulle volcanic complex eruption on crustacean zooplankton of Andean Lakes, Ecol. Austral., 24, 75–82, 2014. 
Short summary
Ash from the Calbuco 2015 eruption spread across northern Patagonia, the SE Pacific and the SW Atlantic. In the Pacific, a phytoplankton bloom corresponded closely to the volcanic ash plume, suggesting that ash fertilized this region of the ocean. No such fertilization was found in the Atlantic where nutrients plausibly supplied by ash were likely already in excess of phytoplankton demand. In Patagonia, the May bloom was more intense than usual, but the mechanistic link to ash was less clear.