MOBYDICK-THEMISTO

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

LABORATOIRE D'OCÉANOGRAPHIE MICROBIENNE - UMR 7621

1 avenue Pierre Favre

66650 Banyuls-sur-mer

33 (0)4 68 88 73 01

frederique.sanz@obs-banyuls.fr

http://lomic.obs-banyuls.fr/fr/index.html

DOI 10.17600/18000403
Objective

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

Bibliography

Publications

Cotté Cedric, Ariza A., Berne Adrien, Habasque Jeremie, Lebourges-Dhaussy Anne, Roudaut Gildas, Espinasse B., Hunt B.P.V., Pakhomov E.A., Henschke N., Péron C., Conchon A., Koedooder C., Izard L., Cherel Y. (2022). Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands. Journal Of Marine Systems, 226, 103650 (18p.). https://doi.org/10.1016/j.jmarsys.2021.103650


Hunt Brian P.V., Espinasse Boris, Pakhomov Evgeny A., Cherel Yves, Cotté Cedric, Delegrange Alice, Henschke Natasha (2021). Pelagic food web structure in high nutrient low chlorophyll (HNLC) and naturally iron fertilized waters in the Kerguelen Islands region, Southern Ocean. Journal Of Marine Systems, 224, 103625 (10p.). https://doi.org/10.1016/j.jmarsys.2021.103625


Henschke Natasha, Cherel Yves, Cotté Cedric, Espinasse Boris, Hunt Brian P.V., Pakhomov Evgeny A. (2021). Size and stage specific patterns in Salpa thompsoni vertical migration. Journal Of Marine Systems, 222, 103587 (5p.). https://doi.org/10.1016/j.jmarsys.2021.103587


Leblanc Karine, Lafond Augustin, Cornet Veronique, Legras Justine, Marie Barbara, Queguiner Bernard (2021). Deep particle stocks following the summer bloom around the Kerguelen islands: Insights into diatoms physiological state, community structure and mortality modes. Journal Of Marine Systems, 222, 103609 (17p.). https://doi.org/10.1016/j.jmarsys.2021.103609


Sun Ying, Debeljak Pavla, Obernosterer Ingrid (2021). Microbial iron and carbon metabolism as revealed by taxonomy-specific functional diversity in the Southern Ocean. Isme Journal, 15(10), 2933-2946. Publisher's official version : https://doi.org/10.1038/s41396-021-00973-3 , Open Access version : https://archimer.ifremer.fr/doc/00693/80483/


Hernandez-Magana Alejandra Elisa, Liu Yan, Debeljak Pavla, Crispi Olivier, Marie Barbara, Koedooder Coco, Obernosterer Ingrid (2021). Prokaryotic diversity and activity in contrasting productivity regimes in late summer in the Kerguelen region (Southern Ocean). Journal Of Marine Systems, 221, 103561 (12p.). https://doi.org/10.1016/j.jmarsys.2021.103561


Irion Solène, Christaki Urania, Berthelot Hugo, L’helguen Stéphane, Jardillier Ludwig (2021). Small phytoplankton contribute greatly to CO2-fixation after the diatom bloom in the Southern Ocean. Isme Journal, 15(9), 2509-2522. Publisher's official version : https://doi.org/10.1038/s41396-021-00915-z , Open Access version : https://archimer.ifremer.fr/doc/00684/79595/


St John Glew Katie, Espinasse Boris, Hunt Brian P. V., Pakhomov Evgeny A., Bury Sarah J., Pinkerton Matt, Nodder Scott D., Gutiérrez‐rodríguez Andres, Safi Karl, Brown Julie C. S., Graham Laura, Dunbar Robert B., Mucciarone David A., Magozzi Sarah, Somes Chris, Trueman Clive N. (2021). Isoscape Models of the Southern Ocean: Predicting Spatial and Temporal Variability in Carbon and Nitrogen Isotope Compositions of Particulate Organic Matter. Global Biogeochemical Cycles, 35(9), e2020GB006901 (18p.). https://doi.org/10.1029/2020GB006901


Christaki Urania, Skouroliakou Ioli-Dimitra, Delegrange Alice, Irion Solène, Courcot Lucie, Jardillier Ludwig, Sassenhagen Ingrid (2021). Microzooplankton diversity and potential role in carbon cycling of contrasting Southern Ocean productivity regimes. Journal Of Marine Systems, 219, 103531 (16p.). https://doi.org/10.1016/j.jmarsys.2021.103531


Henschke Natasha, Blain Stéphane, Cherel Yves, Cotte Cedric, Espinasse Boris, Hunt Brian P.V., Pakhomov Evgeny A. (2021). Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau. Journal Of Marine Systems, 214, 103489 (10p.). Publisher's official version : https://doi.org/10.1016/j.jmarsys.2020.103489 , Open Access version : https://archimer.ifremer.fr/doc/00659/77147/


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 (2021). Seasonal microbial food web dynamics in contrasting Southern Ocean productivity regimes. Limnology And Oceanography, 66(1), 108-122. Publisher's official version : https://doi.org/10.1002/lno.11591 , Open Access version : https://archimer.ifremer.fr/doc/00649/76109/


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.). Publisher's official version : https://doi.org/10.1016/j.jmarsys.2020.103458 , Open Access version : https://archimer.ifremer.fr/doc/00654/76599/


Irion Solène, Jardillier Ludwig, Sassenhagen Ingrid, Christaki Urania (2020). Marked spatiotemporal variations in small phytoplankton structure in contrasted waters of the Southern Ocean (Kerguelen area). Limnology And Oceanography, 65(11), 2835-2852. Publisher's official version : https://doi.org/10.1002/lno.11555 , Open Access version : https://archimer.ifremer.fr/doc/00635/74746/


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.). https://doi.org/10.1016/j.protis.2019.125709