Articles | Volume 17, issue 2
Ocean Sci., 17, 561–578, 2021
https://doi.org/10.5194/os-17-561-2021
Ocean Sci., 17, 561–578, 2021
https://doi.org/10.5194/os-17-561-2021

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 et al.

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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.