Ingrid OBERNOSTERER
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OBERNOSTERER Ingrid
ORCID: 0000-0002-2530-8111 Research ID: A-5434-2011 |
Ingrid Obernosterer
Senior Research Scientist – DR CNRS
Previous employment
Marie Curie Fellow at the Biological Oceanography Lab, Banyuls sur mer
PostDoc at the University of South Carolina, USA
Education
Ph.D. 2000, University of Groningen, The Netherlands
M.S. 1994, University of Vienna, Austria
Research Interests
Microbial oceanography and microbial ecology, links between structure and function of microbial communities, bacterial roles in the marine carbon and iron cycles, interactions between dissolved organic matter and microbial diversity, natural iron fertilization of the Southern Ocean, classical biogeochemical approaches and meta-omics tools
Ongoing and recent Projects
2019-2023: BINGO - Bioavailability of Fe contained in nanoparticles of glacial origin
2020-2024: SWINGS - South West Indian Geotraces Section https://swings.geotraces.org/
2018-2022: co-PI and chief scientist of the project MOBYDICK (Marine Ecosystem Biodiversity and Dynamics of Carbon around Kerguelen: an integrated view)
2014-2019: SOCLIM (Southern Ocean and Climate) www.soclim.com
2016-2019: HEOBI - Heard Earth-Ocean-Biosphere-Interactions aboard the Australian R/V Investigator
PhD Students and PostDocs (past 5 years)
Rui Zhang (2020-present)
Eva Ortega-Retuerta, Marie Curie fellow
Publications (past 5 years)
Debeljak P., S. Blain, A. Bowie, P. van der Merwe, B. Bayer, I. Obernosterer (2021). Homeostasis drives intense microbial trace metal processing on marine particles. Limnol. Oceanogr. DOI: 10.1002/LNO.11923
https://www.geotraces.org/microbial-trace-metal-trafficking-on-marine-particles/
Sun, Y., Debeljak, P. & Obernosterer, I. (2021) Microbial iron and carbon metabolism as revealed by taxonomy-specific functional diversity in the Southern Ocean. ISME J https://doi.org/10.1038/s41396-021-00973-3
Behind the Paper: https://naturemicrobiologycommunity.nature.com/posts/using-meta-genome-assembled-genomes-to-investigate-iron-and-carbon-cycling-of-southern-ocean-prokaryotes-and-what-mobydick-has-to-do-with-it
Hernandez Magana A.E., Y. Liu, P. Debeljak, O. Crispi, B. Marie, C. Koedooder, I. Obernosterer. Prokaryotic diversity and activity in contrasting productivity regimes in the Kerguelen region (Southern Ocean) (2021). JMarSys 221 https://doi.org/10.1016/J.marsys.2021.103561
Gazeau F., C. Ridame, F. Van Wambeke, S. Alliouane, C. Stolpe, J-O. Irisson, S. Marro, J-M. Grisoni, G. De Liège, S. Nunige, K. Djaoudi, E. Pulido-Villena, J. Dinasquet, I. Obernosterer, P. Catala and C. Guieu. (2021) Impact of dust enrichment on Mediterranean plankton communities under present and future conditions of pH and temperature: an experimental overview. Biogeoscience special Issue: Atmospheric deposition in the low-nutrient-low-chlorophyll (LNLC) ocean: effects on marine life today and in the future. Preprint available https://doi.org/10.5194/bg-2020-202
Freney E., K. Sellegri, A. Nicossia, L.R. Williams, M. Rinaldi, J. T.Trueblood, A. S.H. Prevot, M. Thyssen, G. Gregori, N. Haentjens, J. Dinasquet, I. Obernosterer, F. Van-Wambeke, A. Engel, Birthe Zäncker, K. Desboeufs, E. Asmi, H. Timmonen and C. Guieu. (2021) Mediterranean nascent sea spray organic aerosol and relationships with seawater biogeochemistry. Atmos. Chem. Phys. 21, 1-17. https://doi.org/10.5194/acp-21-1-2021
Trueblood J., A. Nicosia, A. Engel, B. Zäncker, M. Rinaldi, E. Freney, M. Thyssen, I. Obernosterer, J. Dinasquet, F. Belosi, A. Tovar-Sánchez, A. Rodriguez-Romero, G. Santachiara, C. Guieu, and K. Sellegri (2021) A Two-Component Parameterization of Marine Ice Nucleating Particles Based on Seawater Biology and Sea Spray Aerosol Measurements in the Mediterranean Sea. Atmos. Chem. Phys. 21, 4659-4676. https://doi.org/10.5194/acp-21-4659-2021.
Ortega-Retuerta E., Q. Devresse, J. Caparros, B. Marie, O. Crispi, P. Catala, F. Joux, I. Obernosterer (2020). Dissolved organic matter released by two marine heterotrophic bacterial strains and its bioavailability for natural prokaryotic communities. Environmental Microbiology. DOI: 10.1111/1462-2920.15306
Ratnarajah L., S. Blain, P. W. Boyd, M. Fourquez, I. Obernosterer, A. Tagliabue (2020). Resource colimitation drives competition between phytoplankton and bacteria in the Southern Ocean. Geophysical Research Letters. DOI: 10.1029/2020GL088369
Blain S., M. Rembauville, O. Crispi and I. Obernosterer (2020). Synchronized autonomous sampling reveals coupled pulses of biomass and export of morphologically different diatoms in the Southern Ocean. Limnol. Oceanogr. 9999, 1-12. http://dx.doi.org/10.1002/lno.11638
Liu Y., S. Blain, O. Crispi, M. Rembauville, I. Obernosterer (2020). Seasonal dynamics of prokaryotes and their associations with diatoms in the Southern Ocean as revealed by an autonomous sampler. Environ. Microbiol. Doi. 10.1111/1462-2920.15184
Ortega-Retuerta E., Q. Devresse, J. Caparros, B. Marie, O. Crispi, P. Catala, F. Joux, I. Obernosterer (2020). Dissolved organic matter released by two marine heterotrophic bacterial strains and its bioavailability for natural prokaryotic communities. Environmental Microbiology. DOI: 10.1111/1462-2920.15306
Christaki U., A. Guenegues, Y. Liu, S. Blain, P. Catala, J. Colombet, P. Debeljak, L. Jardillier, S. Irion,F. Planchon, I. Sassenhagen, T. Sime-Ngando, I. Obernosterer (2020) Seasonal microbial food web dynamics in contrasting Southern Ocean productivity regimes. Limnol. Oceanogr. doi: 10.1002/lno.11591
Tisserand L, Dadaglio L, Intertaglia L, Catala P, Panagiotopoulos C, Obernosterer I, Joux F. (2020) Use of organic exudates from two polar diatoms by bacterial isolates from the Arctic ocean. Phil. Trans. R. Soc. A 20190356. http://dx.doi.org/10.1098/rsta.2019.0356
Koedooder C., A. Guenegues ,R. Van Geersdaële, F.-Y. Bouget, I. Obernosterer, S. Blain. (2020) The interplay between iron limitation, light, and carbon in the proteorhodopsin-containing Photobacterium angustum S14. FEMS Microbiol. Ecol. 96, fiaa103, doi: 10.1093/femsec/fiaa103
Fourquez M., M. Bressac, S. L. Deppeler, M. Ellwood, I. Obernosterer, T. Trull, P. Boyd (2019). Microbial Competition in the Subpolar Southern Ocean: an Fe-C co-limitation experiment. Front. Mar. Sci. 6:776 doi: 10.3389/fmars.2019.00776
Gonzalez M.-L., S. Blain, I. Obernosterer (2019) Seasonal freshening of NW Mediterranean surface water impacts microbial heterotrophic activity and dissolved organic matter. Estuarine, Coastal and Shelf Sciences. 230, 10644 dot: 10.1016/j.ecss.2019.106448
Debeljak P., E. Toulza, S. Beier, S. Blain, I. Obernosterer (2019) Microbial iron metabolism as revealed by gene expression profiles in contrasted Southern Ocean regimes Environ. Microbiol.21: 2360-2374. doi:10.1111/1462-2920.14621
Liu Y., P. Debeljak, M. Rembauville, S. Blain, I. Obernosterer (2019) Diatoms shape the biogeography of heterotrophic prokaryotes in early springin the Southern Ocean. Environ. Microbiol. 21 : 1452-1465. doi:10.1111/1462-2920.14579
Koedooder C., A. Guéneuguès, R. Van Geersdaële, V. Vergé, F.-Y. Bouget, Y. Labreuche, I. Obernosterer, S. Blain (2018) The role of the glyoxylate shunt in the acclimation to iron limitation in marine heterotrophic bacteria. Front.Mar. Sci. 5:435. doi: 10.3389/fmars.2018.00435
Dadaglio L., J. Dinasquet, I. Obernosterer, F. Joux (2018) Differential responses of bacteria to diatom-derived dissolved organic matter in the Arctic Ocean. Aquat Microb Ecol 82:59-72
Dinasquet J., E. Ortega-Retuerta, C. Lovejoy, I. Obernosterer. Editorial: Microbiology of the rapidly changing polar environments. Front.Mar. Sci. 5: 154. Doi: 10.3389/fmars.2018.00154
Landa M., S. Blain, J. Harmand, S. Monchy, A. Rapaport, I. Obernosterer (2018) Major changes in the composition of a Southern Ocean bacterial community in response to diatom-derived dissolved organic matter. FEMS Microbiology Ecology, 94: fiy034. doi.org/10.1093/femsec/fiy034
Fourquez M., S. Beier, E. Jongmans, R. Hunter, I. Obernosterer (2016) Uptake of leucine, chitin and iron by prokaryotic groups during spring phytoplankton blooms induced by natural iron fertilization off Kerguelen Island (Southern Ocean) Front. Mar. Sci. 3:256. doi: 10.3389/fmars.2016.00256
Lasbleiz M., K. Leblanc, L. Armand, U. Christaki, C. Georges, I. Obernosterer, B. Quéguiner (2016) Composition of diatom communities and their contribution to plankton biomass in the naturally iron fertilized region of Kerguelen in the Southern Ocean. FEMS Microbiology Ecology 92, fiw171
Moran M.-A., E.B. Kujawinski, A. Stubbins, R. Fatland, L.I. Aluwihare, A. Buchan, B.C. Crump, P.C. Dorrestein, S.T. Dyhrman, N.J. Hess, B. Howe, K. Longnecker, P.M. Medeiros, J. Niggemann, I. Obernosterer, D.J. Repeta, J.R. Waldbauer (2016) Deciphering ocean carbon in a changing world. PNAS 113 : 3143-3151.
Landa M., Blain S., Christaki U., Monchy S., ObernostererI. (2016) Shifts in bacterial community composition associated with increased carbon cycling in a mosaic of phytoplankton blooms ISME J. 10: 39-50
Beier S., Gálvez M.J., Molina V., Sarthou G., Queroué F., Blain S., Obernosterer I (2015) The transcriptional regulation of the glyoxylate cycle in SAR11 in response to iron fertilization in the Southern Ocean EMIR 7: 427-434 doi:10.1111/1758-2229.12267 (IF: 3.5).
Beier S., Rivers A.R., MoranM.A., Obernosterer I. (2015) Phenotypic Plasticity in Heterotrophic Marine Microbial Communities. ISMEJ 9: 1141-1151 56.
Beier S., Rivers, A.R., Moran M.A., Obernosterer I. (2015) The transcriptional response of prokaryotes to phytoplankton-derived DOM in seawater. Environ Microbiol 17: 3466-3480.
Bowie A.R. van der Merwe P., Quéroué F., Trull T., Fourquez M., Planchon F., Sarthou G., Chever F., Townsend A.T., Obernosterer I., Sallée J.-B., Blain S. (2015) Iron budgets for three distinct biogeochemical sites around the Kerguelen Archipelago (Southern Ocean) during the natural fertilisation study KEOPS-2. BG 12: 4421-4445
Obernosterer I., M. Fourquez, S. Blain (2015) Fe and C co-limitation of heterotrophic bacteria in the naturally fertilized region off Kerguelen Islands. BG 12: 1983-1992
Fourquez M., I. Obernosterer, D. Davies, T. Trull, S. Blain (2015). Microbial iron uptake in the naturally fertilized waters in the vicinity of Kerguelen Islands: phytoplankton-bacteria interactions. BG 12: 1893-1906
Tremblay, J. Caparros, K. Leblanc, I. Obernosterer (2015) Origin and fate of particulate and dissolved organic matter in a naturally iron-fertilized region of the Southern Ocean. BG 12: 607-621 (IF: 4.64).
Blain S., J. Capparos, A. Guéneuguès, I. Obernosterer, L. Oriol (2015) Distributions and stoichiometry of dissolved nitrogen and phosphorus in the iron fertilized region near Kerguelen (Southern Ocean). BG 12 : 623-635
Salter I., P. E. Galand, S. K. Fagervold, P. Lebaron, I. Obernosterer, M. Oliver, M.T. Suzuki, C. Tricoire (2015) Seasonal dynamics of active SAR11 ecotypes in the oligotrophic Northwest Mediterranean Sea. ISMEJ 9: 347-360
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Le LOMIC en chiffres
8 Chercheurs CNRS
3 Enseignant-chercheurs
1 Chercheuse accueillie
8 Tech/Ingénieurs
1 Post doctorant
1 CDD Ingénieur
9 Etudiants en thèse