Arctic mid-winter phytoplankton growth revealed by autonomous profilers
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 2020 |
| Auteurs (13) | : | RANDELHOFF Achim LACOUR Leo MAREC Claudie LEYMARIE Edouard LAGUNAS José XING Xiaogang DARNIS Gerald PENKERC'H Christophe SAMPEI M FORTIER L D'ORTENZIO Fabrizio CLAUSTRE Herve BABIN Marcel |
| Revue scientifique | : | Science Advances |
| Volume | : | 6 |
| Fascicule | : | 39 |
| Pages | : | |
| DOI | : | 10.1126/sciadv.abc2678 |
| URL | : | http://advances.sciencemag.org/content/6/39/eabc2678.abstract |
| Abstract | : | 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. |
| Mots-clés | : | - |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Randelhoff A, Lacour L, Marec C, Leymarie E, Lagunas J, Xing X, Darnis G, Penkerc'h C, Sampei M, Fortier L, D'Ortenzio F, Claustre H, Babin M (2020) Arctic mid-winter phytoplankton growth revealed by autonomous profilers. Sci Adv 6 | doi: 10.1126/sciadv.abc2678
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