Wind-driven upwelling of iron sustains dense blooms and food webs in the eastern Weddell Gyre

This study reports a dense, late summer phytoplankton bloom in the Southern Ocean that accumulated unusually high levels of organic matter and supported feeding hot spots for birds and whales. The authors show that this recurring open ocean bloom is driven by anomalies in easterly winds that push se...

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Bibliographic Details
Published in:Nature Communications
Main Authors: Sebastien Moreau, Tore Hattermann, Laura de Steur, Hanna M. Kauko, Heidi Ahonen, Murat Ardelan, Philipp Assmy, Melissa Chierici, Sebastien Descamps, Tilman Dinter, Tone Falkenhaug, Agneta Fransson, Eirik Grønningsæter, Elvar H. Hallfredsson, Oliver Huhn, Anais Lebrun, Andrew Lowther, Nico Lübcker, Pedro Monteiro, Ilka Peeken, Alakendra Roychoudhury, Magdalena Różańska, Thomas Ryan-Keogh, Nicolas Sanchez, Asmita Singh, Jan Henrik Simonsen, Nadine Steiger, Sandy J. Thomalla, Andre van Tonder, Jozef M. Wiktor, Harald Steen
Format: Article in Journal/Newspaper
Language:English
Published: Nature Portfolio 2023
Subjects:
Science
Q
Southern Ocean
Weddell
Sea ice
Online Access:https://doi.org/10.1038/s41467-023-36992-1
https://doaj.org/article/c4c9e6ae595d4b25bde3046024c97c18
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Summary:This study reports a dense, late summer phytoplankton bloom in the Southern Ocean that accumulated unusually high levels of organic matter and supported feeding hot spots for birds and whales. The authors show that this recurring open ocean bloom is driven by anomalies in easterly winds that push sea ice southwards and favour the upwelling of deep waters enriched in hydrothermal iron.

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