Publications
Publications
Publications
Simon C, Osterholz H, Koschinski A, Dittmar T (2019, in press) Riverine mixing at the molecular scale – An ultrahigh-resolution mass spectrometry study on dissolved organic matter and selected metals in the Amazon confluence zone (Manaus, Brazil). Organic Geochemistry
Osterholz H, Kirchman DL, Niggemann J, Dittmar T (2018) Diversity and stability of bacterial communities and dissolved organic matter in a temperate estuary. FEMS Microbiology Ecology 94(8)
Emilson EJS, Carson MA, Yakimovich KM, Osterholz H, Dittmar T, Gunn JM, Mykytczuk NCS, Basiliko N, Tanentzap AJ (2018) Climate-driven shifts in sediment chemistry enhance methane production in northern lakes. Nature Communications: doi:10.1038/s41467-018-04236-2
Shah Walter, S.R., Jaekel, U., Osterholz, H., Fisher, A.T., Huber, J.A., Pearson, A., Dittmar, T., Girguis, P.R. (2018) Microbial decomposition of marine dissolved organic matter in cool oceanic crust. Nature Geoscience 11, 334-339
Emilson, E.J.S., Carson, M.A., Yakimovich, K.M, Osterholz, H.,Dittmar, T., Gunn, J.M, Mykytczuk, N.C.S., Basiliko, N., Tanentzap A.J. (2018) Climate-driven shifts in sediment chemistry enhance methane production in northern lakes. Nature Communications 9(1) DOI: 10.1038/S41467-018-04236-2
Martínez-Pérez, A.M., Osterholz, H., Nieto-Cid, M., Álvarez, M., Dittmar, T., Álvarez-Salgado, X.A. (2017) Molecular composition of dissolved organic matter in the Mediterranean Sea. Limnology and Oceanography (doi: 10.1002/lno.10600)
Martínez-Pérez, A.M., Nieto-Cid, M., Osterholz, H., Catalá, T.S., Reche, I., Dittmar, T., Álvarez-Salgado, X.A. (2017) Linking optical and molecular signatures of dissolved organic matter in the Mediterranean Sea. Scientific Reports 7:1 (doi: 10.1038/s41598-017-03735-4).
Osterholz H., Kirchman D.L., Niggemann J., Dittmar T. (2016) Environmental drivers of dissolved organic matter molecular composition in the Delaware Estuary. Frontiers in Earth Science 4:95 (doi: 10.3389/feart.2016.00095)
Benavides, M., Bonnet, S., Hernández N, Martinez-Pérez, A., Nieto-Cid, M., Àlvarez-Salgado, X.A., Banos, I., Montero, M.F., Mazuecos, I.P., Gasol, J.M., Osterholz, H., Dittmar, T., Berman-Frank, I., Aristegui, J. (2016) Basin-wide N2 Fixation in the deep waters of the Mediterranean Sea. Global Biogeochemical Cycles 30, 952-961
Osterholz, H., Singer, G., Wemheuer, B., Daniel, R., Niggemann, J., Dittmar, T. (2016) Deciphering associations between dissolved organic molecules and bacterial communities in a pelagic marine system. ISME Journal, 10, 1717-1730
Osterholz, H., J. Niggemann, H.-A. Giebel, M. Simon, T. Dittmar (2015) Inefficient microbial production of refractory dissolved organic matter in the ocean. Nature Communications: DOI:10.1038/ncomms8422
Osterholz, H., Niggemann, J., Dittmar, T. (2014) Molecular evidence for rapid dissolved organic matter turnover in Arctic fjords. Marine Chemistry 160, 1-10
Osterholz, H., Simon, H., Beck, M., März, J., Rackebrandt, S., Brumsack, H.-J., Feudel, U, Simon, M. (2014) Impact of diatom growth on trace metal dynamics (Mn, Mo, V, U). Journal of Sea Research 87, 35-45
Poster and Talks
Osterholz H. Linking Molecules and Microbes. Invited Speaker at Ruder Boskovic Institute, Zagreb, Croatia, Oct 15 2018 (Seminar)
Osterholz H, Kirchman DL, Niggemann J, Dittmar T. Composition and diversity of dissolved organic matter in a temperate estuary. 13th European Fourier Transform Mass Spectrometry Meeting, Freising, Germany, Apr 23-27 2018 (Talk)
Osterholz H. Dissolved organic matter in an ocean desert: the South Pacific Gyre. Ocean Sciences Meeting, Portland, Oregon, USA, Feb 11-16 2018 (Talk)
Osterholz H, Niggemann J, Dittmar T, Kirchman DL. Paralleling diversity of microbial communities and dissolved organic matter in an estuary. SAME15, Zagreb, Croatia, Sept 3-8 2017 (Poster)
Osterholz H, Kirchman DL, Niggemann J, Dittmar T. Seasonal and Interannual Variability of the Dissolved Organic Matter Composition in the Delaware Estuary. Ocean Sciences Meeting, New Orleans, USA, Feb 21-26 2016 (Talk)
Osterholz H, Niggemann J, Giebel H-A, Simon M, Dittmar T. Inefficient Microbial Production of Refractory Dissolved Organic Matter in the Ocean. Gordon Research Seminar and Conference: Chemical Oceanography, Holderness, USA, Jul 24-31 2015 (Talk, Poster)
Osterholz H, Singer G, Wemheuer B, Daniel R, Niggemann J, Dittmar T. Terrigenous Input and Microbial Processing – Driving Forces of Dissolved Organic Matter Composition in the North Sea. Aquatic Sciences Meeting, Granada, Spain, Feb 22-27 2015 (Talk)
Osterholz H, Singer G, Wemheuer B, Daniel R, Giebel H-A, Simon M, Niggemann J, Dittmar T. Deciphering associations between dissolved organic molecules and bacteria in a natural marine system. Workshop: Geo-Metabolomic: first steps towards a systems biology understanding of organic matter cycling in aquatic systems, Delmenhorst Germany, Nov 24-28 2014 (Talk)
Osterholz H, Niggemann J, Feenders C, Blasius B, Simon M, Dittmar T. Fast production of diverse organic matter by a natural microbial community. YOUMARES 4. German Young Marine Scientist Meeting, Oldenburg, Germany, Sep 11-13, 2013 (Invited Talk)
Osterholz H, Müllenmeister S, Kramer C, Simon M, Niggemann J, Dittmar T. Fast transformation of freshly produced compounds into refractory dissolved organic matter. Aquatic Sciences Meeting, New Orleans, USA, Feb 17-22 2013 (Talk)
Osterholz, H., Engelen, B., Fuchs, B., Dittmar, T., Niggemann J. Molecular Evidence for rapid dissolved organic matter turnover in Arctic fjords. 3rd Meeting of SCOR WG 134 – The Microbial Carbon Pump in the Ocean, Delmenhorst, Germany, Aug 27-28 2012 (Poster)
Osterholz, H., Engelen B., Niggemann J., Dittmar T. Linking Dissolved Molecules and Microorganisms – A Case Study in Arctic Fjords. YOUMARES 2. German Young Marine Scientist Meeting, Bremerhaven, Germany, Sep 7-9 2011 (Talk)