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  1. Osterholz, Helena [Author] ; Dittmar, Thorsten [Degree supervisor]; Simon, Meinhard [Degree supervisor]; Pahnke, Katharina [Degree supervisor]

    From freshly produced compounds to refractory molecules - tracing sources and fate of dissolved organic matter in the ocean

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    Oldenburg: BIS der Universität Oldenburg, 2014

  3. Osterholz, Helena [Author]; Kirchman, David L. [Author]; Niggemann, Jutta [Author]; Dittmar, Thorsten [Author]

    Environmental drivers of dissolved organic matter molecular composition in the Delaware estuary

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    2016

    Published in: Frontiers in Earth Science ; Bd. 4 (2016), 17. (Nov.), Art.-Nr. 95, insges. 14 S.

  5. Selak, Lorena [Author]; Osterholz, Helena [Author]; Stanković, Igor [Author]; Hanžek, Nikola [Author]; Gligora Udovič, Marija [Author]; Dittmar, Thorsten [Author]; Orlić, Sandi [Author]

    Adaptations of microbial communities and dissolved organics to seasonal pressures in a mesotrophic coastal Mediterranean lake

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    May 2022

    Published in: Environmental microbiology ; 24(2022), 5, Seite 2282-2298

  6. Hildebrand, Tabea [Author]; Osterholz, Helena [Author]; Bunse, Carina [Author]; Grotheer, Hendrik [Author]; Dittmar, Thorsten [Author]; Schupp, Peter [Author]

    Transformation of dissolved organic matter by two Indo-Pacific sponges

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    2022

    Published in: Limnology and oceanography ; 67(2022), 11, Seite 2483-2496

  7. Osterholz, Helena [Author]; Niggemann, Jutta [Author]; Giebel, Helge-Ansgar [Author]; Simon, Meinhard [Author]; Dittmar, Thorsten [Author]

    Inefficient microbial production of refractory dissolved organic matter in the ocean

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    2015

    Published in: Nature Communications ; Bd. 6.2015, 18. (Jun.), Art.-Nr. 7422, insges. 8 S.

  8. Osterholz, Helena [Author]; Turner, Stephanie [Author]; Alakangas, Linda J. [Author]; Tullborg, Eva-Lena [Author]; Dittmar, Thorsten [Author]; Kalinowski, Birgitta E. [Author]; Dopson, Mark [Author]

    Terrigenous dissolved organic matter persists in the energy-limited deep groundwaters of the Fennoscandian Shield

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    2022

    Published in: Nature Communications ; 13(2022), Artikel-ID 4837, Seite 1-14

  9. Emilson, E. J. S. [Author]; Carson, M. A. [Author]; Yakimovich, K. M. [Author]; Osterholz, Helena [Author]; Dittmar, Thorsten [Author]; Gunn, J. M. [Author]; Mykytczuk, N. C. S. [Author]; Basiliko, N. [Author]; Tanentzap, A. J. [Author]

    Climate-driven shifts in sediment chemistry enhance methane production in northern lakes

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    2018

    Published in: Nature Communications ; Bd. 9 (2018), Artikel-Nr. 1801, insges. 6 S.

  10. Menges, Johanna [Author]; Hovius, Niels [Author]; Poetz, Stefanie [Author]; Osterholz, Helena [Author]; Sachse, Dirk [Author]; 1 GFZ German Research Centre for Geosciences Potsdam Germany [Author]; 4 Leibniz Institute for Baltic Sea Research Warnemuende Rostock Germany [Author]

    Particulate Organic Matter Mobilization and Transformation Along a Himalayan River Revealed by ESI‐FT‐ICR‐MS

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    GEO-LEOe-docs (FID GEO), 2022-12-14

  11. Duerschlag, Julia [Author]; Mohr, Wiebke [Author]; Ferdelman, Timothy G. [Author]; LaRoche, Julie [Author]; Desai, Dhwani [Author]; Croot, Peter L. [Author]; Voß, Daniela [Author]; Zielinski, Oliver [Author]; Lavik, Gaute [Author]; Littmann, Sten [Author]; Martinez-Perez, Clara [Author]; Tschitschko, Bernhard [Author]; Bartlau, Nina [Author]; Osterholz, Helena [Author]; Dittmar, Thorsten [Author]; Kuypers, Marcel M. M. [Author]

    Niche partitioning by photosynthetic plankton as a driver of CO2-fixation across the oligotrophic South Pacific Subtropical Ocean

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    2021

    Published in: International Society for Microbial Ecology: The ISME journal ; 16(2021), Seite 465-476

  12. Steen, Andrew D. [Author]; Kusch, Stephanie [Author]; Abdulla, Hussain A. [Author]; Cakić, Nevenka [Author]; Coffinet, Sarah [Author]; Dittmar, Thorsten [Author]; Fulton, James M. [Author]; Galy, Valier [Author]; Hinrichs, Kai-Uwe [Author]; Ingalls, Anitra E. [Author]; Koch, Boris P. [Author]; Kujawinski, Elizabeth [Author]; Liu, Zhanfei [Author]; Osterholz, Helena [Author]; Rush, Darci [Author]; Seidel, Michael [Author]; Sepúlveda, Julio [Author]; Wakeham, Stuart G. [Author]

    Analytical and computational advances, opportunities, and challenges in marine organic biogeochemistry in an era of “omics”

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    2020

    Published in: Frontiers in Marine Science ; 7(2020), Artikel-ID 718, Seite 1-19

  13. Hildebrand, Tabea [Author]; Osterholz, Helena [Author]; Bunse, Carina [Author]; Grotheer, Hendrik [Author]; Dittmar, Thorsten [Author]; Schupp, Peter J. [Author]; 4 Leibniz‐Institute for Baltic Sea Research Warnemünde Rostock Germany [Author]; 3 Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg Oldenburg Germany [Author]; 1 Alfred‐Wegener‐Institut Helmholtz‐Zentrum für Polar‐ und Meeresforschung Bremerhaven Germany [Author]; 2 Helmholtz‐Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB) Oldenburg Germany [Author]

    Transformation of dissolved organic matter by two Indo‐Pacific sponges

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    John Wiley & Sons, Inc.; Hoboken, USA, 2022-09-12