Type Oceanographic cruise
Set This cruise is part of the set THEMISTO
Ship Marion Dufresne
Ship owner TAAF
Dates 18/02/2018 - 27/03/2018
Chief scientist(s) OBERNOSTERER Ingrid


1 avenue Pierre Favre

66650 Banyuls-sur-mer

33 (0)4 68 88 73 01

DOI 10.17600/18000403

Understanding the oceanic biological carbon pump by (i) considering end-to-end marine food webs, and (ii) linking biodiversity to biogeochemical fluxes is the major scientific challenge that will be addressed by the project MOBYDICK. We propose to study end-to-end food webs in contrasted types of ecosystems in the Southern Ocean: a "Low Biomass Low Export" and a "High Biomass Low Export" ecosystem. The MOBYDICK oceanographic cruise was dedicated to study the food web structure from microbes to nekton, by using complementary biogeochemical and biological techniques, using a combination of up-to-date methods (omic, isotopic techniques, microscopy/image analyses, in situ sensors incl. acoustics, laser¿based size spectrum acquisition and imagery), and we have used multiple sampling tools (rosette, bottle-net, plankton nets, mesopelagic trawl), which have never been associated until now.

Data managed by SISMER



Lafond Augustin, Leblanc Karine, Legras Justine, Cornet Véronique, Quéguiner Bernard (2020). The structure of diatom communities constrains biogeochemical properties in surface waters of the Southern Ocean (Kerguelen Plateau). Journal of Marine Systems, 212, 103458 (22p.).

Henschke Natasha, Blain Stéphane, Cherel Yves, Cotte Cedric, Espinasse Boris, Hunt Brian P.V., Pakhomov Evgeny A. Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau. Journal of Marine Systems IN PRESS.

Sassenhagen Ingrid, Irion Solène, Jardillier Ludwig, Moreira David, Christaki Urania (2020). Protist Interactions and Community Structure During Early Autumn in the Kerguelen region (Southern Ocean). Protist, 171(1), 125709 (25p.).

Irion Solène, Jardillier Ludwig, Sassenhagen Ingrid, Christaki Urania Marked spatiotemporal variations in small phytoplankton structure in contrasted waters of the Southern Ocean (Kerguelen area). Limnology and Oceanography IN PRESS. Publisher's official version : , Open Access version :

Christaki Urania, Gueneugues Audrey, Liu Yan, Blain Stéphane, Catala Philippe, Colombet Jonathan, Debeljak Pavla, Jardillier Ludwig, Irion Solène, Planchon Frederic, Sassenhagen Ingrid, Sime Ngando Telesphore, Obernosterer Ingrid Seasonal microbial food web dynamics in contrasting Southern Ocean productivity regimes. Limnology and oceanography IN PRESS. Publisher's official version : , Open Access version :