Diatom biodiversity and the modulation of biogeochemical fluxes of carbon and silicon in pelagic polar ecosystems

• Main Author: Lafond, Augustin
• Other Authors: Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN), Aix Marseille Université, Bernard Quéguiner, Karine Leblanc
• Format: Doctoral or Postdoctoral Thesis
• Language: French
• Published: HAL CCSD 2021
• Subjects: Diatoms; Biological pump; Community structure; Baffin Bay; Kerguelen Plateau; Arctic; Southern Ocean; Biogeochemistry; Diatomées; Pompe biologique; Structure des communautés; Baie de Baffin; Plateau des Kerguelen; Arctique; Océan Austral; Biogéochimie; [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography; [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; Austral; Kerguelen; Pacific; Arctique*; Baffin; ice pack; Phytoplankton; Sea ice
• Online Access: https://tel.archives-ouvertes.fr/tel-03137420; https://tel.archives-ouvertes.fr/tel-03137420/document; https://tel.archives-ouvertes.fr/tel-03137420/file/These_LAFOND.pdf

Polar regions are particularly affected by the ongoing climate changes which have profound consequences on the development of phytoplankton and on the functioning of the biological pump (vertical transfer of particulate organic carbon from the surface to the deep ocean). Plankton community structure...