Molecular biogeochemical provinces in the eastern Atlantic Ocean
Molecular biogeochemical provinces in the eastern Atlantic Ocean
Editor(s): B. Koch, G. Kattner, and G. Herndl
One of the most important aspects to understand marine organic carbon fluxes is to resolve the molecular mechanisms which convert fresh, labile biomolecules into semi-labile and refractory dissolved and particulate organic compounds in the ocean. In this interdisciplinary project, we carried out a detailed molecular characterisation of dissolved organic matter (DOM) during a north–south transect in the Atlantic surface ocean to relate the data to different biological, climatic, oceanographic, and meteorological regimes. Our goal was to achieve a high-resolution data set for the biogeochemical characterisation of the sources and reactivity of DOM. We applied various biogeochemical analyses for 220 samples from the upper water column (0–200m) and eight deep profiles. Spectroscopic techniques were applied continuously for phytoplankton characterization in a constant sample water flow supplied by a fish system and the moon pool. Radiocarbon dating enabled assessment of DOC residence time. Bacterial abundance and production provided a metabolic context for the DOM characterization work.

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13 Jul 2012
Spectroscopic detection of a ubiquitous dissolved pigment degradation product in subsurface waters of the global ocean
R. Röttgers and B. P. Koch
Biogeosciences, 9, 2585–2596,,, 2012
18 Jun 2012
Bacterial assemblages of the eastern Atlantic Ocean reveal both vertical and latitudinal biogeographic signatures
C. J. Friedline, R. B. Franklin, S. L. McCallister, and M. C. Rivera
Biogeosciences, 9, 2177–2193,,, 2012
01 Jun 2012
A molecular perspective on the ageing of marine dissolved organic matter
R. Flerus, O. J. Lechtenfeld, B. P. Koch, S. L. McCallister, P. Schmitt-Kopplin, R. Benner, K. Kaiser, and G. Kattner
Biogeosciences, 9, 1935–1955,,, 2012
27 Apr 2012
Dissolved organic matter in sea spray: a transfer study from marine surface water to aerosols
P. Schmitt-Kopplin, G. Liger-Belair, B. P. Koch, R. Flerus, G. Kattner, M. Harir, B. Kanawati, M. Lucio, D. Tziotis, N. Hertkorn, and I. Gebefügi
Biogeosciences, 9, 1571–1582,,, 2012
20 Dec 2011
Biogeochemical controls on the bacterial populations in the eastern Atlantic Ocean
S. B. Neogi, B. P. Koch, P. Schmitt-Kopplin, C. Pohl, G. Kattner, S. Yamasaki, and R. J. Lara
Biogeosciences, 8, 3747–3759,,, 2011
12 Dec 2011
Bio-optical provinces in the eastern Atlantic Ocean and their biogeographical relevance
B. B. Taylor, E. Torrecilla, A. Bernhardt, M. H. Taylor, I. Peeken, R. Röttgers, J. Piera, and A. Bracher
Biogeosciences, 8, 3609–3629,,, 2011
19 Sep 2011
Transport and fate of hexachlorocyclohexanes in the oceanic air and surface seawater
Z. Xie, B. P. Koch, A. Möller, R. Sturm, and R. Ebinghaus
Biogeosciences, 8, 2621–2633,,, 2011
08 Mar 2013
High-field NMR spectroscopy and FTICR mass spectrometry: powerful discovery tools for the molecular level characterization of marine dissolved organic matter
N. Hertkorn, M. Harir, B. P. Koch, B. Michalke, and P. Schmitt-Kopplin
Biogeosciences, 10, 1583–1624,,, 2013
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