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Provedor de dados:  ArchiMer
País:  France
Título:  Arctic mid-winter phytoplankton growth revealed by autonomous profilers
Autores:  Randelhoff, Achim
Lacour, Léo
Marec, Claudie
Leymarie, Edouard
Lagunas, José
Xing, Xiaogang
Darnis, Gérald
Penkerc’h, Christophe
Sampei, Makoto
Fortier, Louis
D’ortenzio, Fabrizio
Claustre, Hervé
Babin, Marcel
Data:  2020-09
Ano:  2020
Resumo:  It is widely believed that during winter and spring, Arctic marine phytoplankton cannot grow until sea ice and snow cover start melting and transmit sufficient irradiance, but there is little observational evidence for that paradigm. To explore the life of phytoplankton during and after the polar night, we used robotic ice-avoiding profiling floats to measure ocean optics and phytoplankton characteristics continuously through two annual cycles in Baffin Bay, an Arctic sea that is covered by ice for 7 months a year. We demonstrate that net phytoplankton growth occurred even under 100% ice cover as early as February and that it resulted at least partly from photosynthesis. This highlights the adaptation of Arctic phytoplankton to extreme low-light conditions, which may be key to their survival before seeding the spring bloom.
Tipo:  Text
Idioma:  Inglês

Editor:  American Association for the Advancement of Science (AAAS)
Formato:  application/pdf
Fonte:  Science Advances (2375-2548) (American Association for the Advancement of Science (AAAS)), 2020-09 , Vol. 6 , N. 39 , P. eabc2678 (10p.)
Direitos:  info:eu-repo/semantics/openAccess

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