Marion Fourquez

UTAS Home Dr Marion Fourquez

Marion Fourquez

Research Fellow - Southern Ocean Biogeochemistry

Room 213.13 , IMAS Hobart Waterfront Building

+61 3 6226 6379 (phone)

Doctor Marion Fourquez is a microbial oceanographer currently working for the ACE CRC as a marine molecular physiologist. One of her main scientist interests is understanding the link between major biochemical cycles in the ocean (e.g. carbon/Fe) to microbial activity (e.g. growth rates/proteomic pathways). She is also interested in the ability of microbes to survive an unprecedented rate of change in environmental conditions that are projected for the coming decades. Currently she works at the proteomic level to determine whether bacteria can acclimate to rapidly changing conditions, and quantify what are these timescales of acclimation.


Marion joined the University of Tasmania as a research fellow soon after she was graduated with a PhD in biological oceanography at the University of Pierre and Marie Curie (Banyuls-sur-mer, France). Previous to this she completed a master in Environmental oceanography at the University of Pierre and Marie Curie.

Career summary



PhDUniversity of Pierre and Marie CurieFrance24/09/2012
MScUniversity of Pierre and Marie CurieFrance01/07/2009

Languages (other than English)

  • French (native)
  • English (fluent)
  • Spanish (basic)

Administrative expertise

  • Organisation of microbial workshop, Hobart (2014)
  • Organisation of microbial workshop 'From food safety to ocean biogeochemistry', Hobart (2013)
  • Organisation of 'Les doctoriales de l'université', Pierre & Marie Curie , France (2011)

View more on Dr Marion Fourquez in WARP


  • Microbial oceanography 
  • Influence of climate change on marine microbes

Research Themes

Marion's research aligns to the University's Marine, Antarctic and Maritime and Environment, Resources and Sustainability research themes.


  • Phil Boyd (UTAS – IMAS – ACE, Australia)
  • John Bowman (UTAS)
  • Yuliya Karpievitch (University of Western Australia, Australia)
  • Richard Wilson (UTAS - CSL, Australia)
  • Tom Trull (CSIRO, Australia)
  • Stéphane Blain (UPMC – CNRS, France)
  • Ingrid Obernosterer (CNRS, France)

Current projects

The ACE CRC's Project R2.2 investigates how Southern Ocean ecosystems are responding to the impacts of climate change. Marion's work seeks to assess the ability of a range of microbes, which are found in different habitats, to survive an unprecedented rate of change to oceanic/sea ice conditions projected for the coming decades. The research is intended to determine whether these representative microbes, which have a range of inherent environmental tolerances, can acclimate to rapidly changing conditions, and to quantify what are the timescales of acclimation. To date her work has focused at the proteomic level on strategies used by polar microbes (sea-ice and free living bacteria) to counteract changing polar conditions.Marion's work is conducted in collaboration with UTAS/IMAS/CSL, and she is also establishing new collaborations with researchers at the University of Western Australia.

Fields of Research

  • Biological oceanography (370801)
  • Chemical oceanography (370802)
  • Ecological impacts of climate change and ecological adaptation (410102)

Research Objectives

  • Antarctic and Southern Ocean oceanic processes (180402)
  • Measurement and assessment of marine water quality and condition (180505)
  • Climate change mitigation strategies (190301)
  • Oceanic processes (excl. in the Antarctic and Southern Ocean) (180506)
  • Expanding knowledge in the earth sciences (280107)


Total publications


Journal Article

(11 outputs)
2022Boyd PW, Doney SC, Eggins S, Ellwood MJ, Fourquez M, et al., 'Transitioning global change experiments on Southern Ocean phytoplankton from lab to field settings: insights and challenges', Limnology and Oceanography, 67, (9) pp. 1911-1930. ISSN 0024-3590 (2022) [Refereed Article]

DOI: 10.1002/lno.12175 [eCite] [Details]

Citations: Web of Science - 1

Co-authors: Boyd PW; Strzepek R


2022Fourquez M, Strzepek RF, Ellwood MJ, Hassler C, Cabanes D, et al., 'Phytoplankton responses to bacterially regenerated iron in a Southern Ocean eddy', Microorganisms, 10, (8) Article 1655. ISSN 2076-2607 (2022) [Refereed Article]

DOI: 10.3390/microorganisms10081655 [eCite] [Details]

Co-authors: Strzepek RF; Deppeler S; Trull TW; Boyd PW; Bressac M


2020Ellwood MJ, Strzepek RF, Strutton PG, Trull TW, Fourquez M, et al., 'Distinct iron cycling in a Southern Ocean eddy', Nature Communications, 11, (1) Article 825. ISSN 2041-1723 (2020) [Refereed Article]

DOI: 10.1038/s41467-020-14464-0 [eCite] [Details]

Citations: Scopus - 30Web of Science - 30

Co-authors: Strzepek RF; Strutton PG; Boyd PW


2020Fourquez M, Bressac M, Deppeler SL, Ellwood M, Obernosterer I, et al., 'Microbial competition in the subpolar southern ocean: an Fe-C Co-limitation experiment', Frontiers in Marine Science, 6, (JAN) Article 776. ISSN 2296-7745 (2020) [Refereed Article]

DOI: 10.3389/fmars.2019.00776 [eCite] [Details]

Citations: Scopus - 15Web of Science - 14

Co-authors: Bressac M; Deppeler SL; Trull TW; Boyd PW


2016Boyd PW, Cornwall CE, Davison A, Doney SC, Fourquez M, et al., 'Biological responses to environmental heterogeneity under future ocean conditions', Global Change Biology, 22, (8) pp. 2633-2650. ISSN 1354-1013 (2016) [Refereed Article]

DOI: 10.1111/gcb.13287 [eCite] [Details]

Citations: Scopus - 136Web of Science - 131

Co-authors: Boyd PW; Cornwall CE; Hurd CL; McMinn A


2016Fourquez M, Beier S, Jongmans E, Hunter R, Obernosterer I, 'Uptake of leucine, chitin, and iron by prokaryotic groups during spring phytoplankton blooms induced by natural iron fertilization off Kerguelen Island (Southern Ocean)', Frontiers in Marine Science, 3 Article 256. ISSN 2296-7745 (2016) [Refereed Article]

DOI: 10.3389/fmars.2016.00256 [eCite] [Details]

Citations: Scopus - 8Web of Science - 9


2015Bowie AR, van der Merwe P, Queroue F, Trull T, Fourquez M, et al., 'Iron budgets for three distinct biogeochemical sites around the Kerguelen Archipelago (Southern Ocean) during the natural fertilisation study, KEOPS-2', Biogeosciences, 12, (14) pp. 4421-4445. ISSN 1726-4170 (2015) [Refereed Article]

DOI: 10.5194/bg-12-4421-2015 [eCite] [Details]

Citations: Scopus - 46Web of Science - 44

Co-authors: Bowie AR; van der Merwe P; Trull T; Townsend AT


2015Fourquez M, Obernosterer I, Davies DM, Trull TW, Blain S, 'Microbial iron uptake in the naturally fertilized waters in the vicinity of the Kerguelen Islands: phytoplankton-bacteria interactions', Biogeosciences, 12, (6) pp. 1893-1906. ISSN 1726-4170 (2015) [Refereed Article]

DOI: 10.5194/bg-12-1893-2015 [eCite] [Details]

Citations: Scopus - 21Web of Science - 21

Co-authors: Davies DM; Trull TW


2015Obernosterer I, Fourquez M, Blain S, 'Fe and C co-limitation of heterotrophic bacteria in the naturally fertilized region off the Kerguelen Islands', Biogeosciences, 12 pp. 1983-1992. ISSN 1726-4170 (2015) [Refereed Article]

DOI: 10.5194/bg-12-1983-2015 [eCite] [Details]

Citations: Scopus - 20Web of Science - 19


2014Fourquez M, Devez A, Schaumann A, Gueneugues A, Jouenne T, et al., 'Effects of iron limitation on growth and carbon metabolism in oceanic and coastal heterotrophic bacteria', Limnology and Oceanography, 59, (2) pp. 349-360. ISSN 0024-3590 (2014) [Refereed Article]

DOI: 10.4319/lo.2014.59.2.0349 [eCite] [Details]

Citations: Scopus - 27Web of Science - 27


2012Fourquez MAC, Obernosterer I, Blain S, 'A method for the use of the radiotracer 55Fe for microautoradiography and CARD-FISH of natural bacterial communities', F E M S Microbiology Letters: (Federation of European Microbiological Societies), 337, (2) pp. 132-139. ISSN 0378-1097 (2012) [Refereed Article]

DOI: 10.1111/1574-6968.12022 [eCite] [Details]

Citations: Scopus - 8Web of Science - 8