HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Nanoplanktonic diatoms are globally overlooked but play a role in spring blooms and carbon export

Karine Leblanc 1 Bernard Queguiner 2 Frederic Diaz 1 Veronique Cornet 1 Mónica Michel-Rodriguez 1 Xavier Durrieu de Madron 3 Chris Bowler 4 Shruti Malviya 4 Melilotus Thyssen 5 Gérald Grégori 1 Mathieu Rembauville 6 Olivier Grosso 1 Julie Poulain 7 Colomban de Vargas 8 Mireille Pujo-Pay 9 Pascal Conan 10
1 MIO - Institut méditerranéen d'océanologie
2 LOB - Laboratoire d'océanographie et de biogéochimie
3 CEFREM - Centre de Formation et de Recherche sur les Environnements Méditérranéens
4 IBENS - Institut de biologie de l'ENS Paris
5 LOG - Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187
6 LOMIC - Laboratoire d'Océanographie Microbienne
7 IG - Institut de Génomique d'Evry
8 EPEP - Evolution des Protistes et Ecosystèmes Pélagiques
AD2M - Adaptation et diversité en milieu marin
9 LOBB - Laboratoire d'océanographie biologique de Banyuls
10 LOMIC - Laboratoire d'Océanographie Microbienne
Abstract : Diatoms are one of the major primary producers in the ocean, responsible annually for ~20% of photosynthetically fixed CO2 on Earth. In oceanic models, they are typically represented as large (>20 µm) microphytoplankton. However, many diatoms belong to the nanophytoplankton (2-20 µm) and a few species even overlap with the picoplanktonic size-class (<2 µm). Due to their minute size and difficulty of detection they are poorly characterized. Here we describe a massive spring bloom of the smallest known diatom (Minidiscus) in the northwestern Mediterranean Sea. Analysis of Tara Oceans data, together with literature review, reveal a general oversight of the significance of these small diatoms at the global scale. We further evidence that they can reach the seafloor at high sinking rates, implying the need to revise our classical binary vision of pico- and nanoplanktonic cells fueling the microbial loop, while only microphytoplankton sustain secondary trophic levels and carbon export.
Document type :
Journal articles
Complete list of metadata

Cited literature [102 references]  Display  Hide  Download
https://hal.archives-ouvertes.fr/hal-02006275
Contributor : Sébastien Poulain Connect in order to contact the contributor
Submitted on : Monday, February 18, 2019 - 2:23:19 PM
Last modification on : Wednesday, March 23, 2022 - 3:51:00 PM
Long-term archiving on: : Sunday, May 19, 2019 - 4:45:25 PM

File

Vignette du document
Leblanc-Merged.pdf
Files produced by the author(s)

Identifiers

Collections

UNIV-PERP | UNIV-AMU | UNIV-TLN | UNIV-LILLE | AGROPOLIS | OSU-INSTITUT-PYTHEAS | CEA | LOPB | CNRS | SORBONNE-UNIVERSITE | INSU | MIO | IRD | INSERM | ADMM | LOMIC | ADMM-EPEP | SU-SCIENCES | FR2424 | UMS-2348 | CEA-UPSAY | JACOB | CEA-DRF | UNIV-PARIS-SACLAY | PSL | MIO-CYBELE | SU-TI | UNIV-LITTORAL | LOG | CEFREM

Citation

Karine Leblanc, Bernard Queguiner, Frederic Diaz, Veronique Cornet, Mónica Michel-Rodriguez, et al.. Nanoplanktonic diatoms are globally overlooked but play a role in spring blooms and carbon export. Nature Communications, Nature Publishing Group, 2018, 9 (1), pp.953. ⟨10.1038/s41467-018-03376-9⟩. ⟨hal-02006275⟩

Export

BibTeX TEI DC DCterms EndNote Datacite

Share

Metrics

Record views

253

Files downloads

67