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Article Dans Une Revue Science Advances Année : 2016

Why marine phytoplankton calcify

Fanny M. Monteiro
  • Fonction : Auteur
Lennart T. Bach
  • Fonction : Auteur
Paul Bown
  • Fonction : Auteur
Rosalind E. M. Rickaby
  • Fonction : Auteur
Toby Tyrrell
  • Fonction : Auteur
Samantha Gibbs
  • Fonction : Auteur
Magdalena A. Gutowska
  • Fonction : Auteur
Renee Lee
  • Fonction : Auteur
Ulf Riebesell
  • Fonction : Auteur
  • PersonId : 851235
Andy Ridgwell

Résumé

Calcifying marine phytoplankton-coccolithophores- are some of the most successful yet enigmatic organisms in the ocean and are at risk from global change. To better understand how they will be affected, we need to know ``why'' coccolithophores calcify. We review coccolithophorid evolutionary history and cell biology as well as insights from recent experiments to provide a critical assessment of the costs and benefits of calcification. We conclude that calcification has high energy demands and that coccolithophores might have calcified initially to reduce grazing pressure but that additional benefits such as protection from photodamage and viral/bacterial attack further explain their high diversity and broad spectrum ecology. The cost-benefit aspect of these traits is illustrated by novel ecosystem modeling, although conclusive observations remain limited. In the future ocean, the trade-off between changing ecological and physiological costs of calcification and their benefits will ultimately decide how this important group is affected by ocean acidification and global warming.
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hal-01458292 , version 1 (07-01-2021)

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Fanny M. Monteiro, Lennart T. Bach, Colin Brownlee, Paul Bown, Rosalind E. M. Rickaby, et al.. Why marine phytoplankton calcify. Science Advances , 2016, 2 (7), ⟨10.1126/sciadv.1501822⟩. ⟨hal-01458292⟩
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