Dr. Olaf Dellwig
My particular interest lies in the behaviour of trace metals in aquatic ecosystems under changing oxygen availability. Besides eralier studies in oxygenated marginal seas (e.g. North Sea), my work currently focusses especially on anoxic/sulphidic systems such as the deep basins of the Baltic Sea and the Black Sea. By using ICP analytics, I examine in particular redox-sensitive metals (e.g. manganese, molybdenum, rhenium, uranium or tungsten) in the water column, suspended matter, sediments and pore water, in order to apply them as proxies for palaeo environmental reconstructions.
Conceptual model comparing the different redox behavior of the "geochemical twins" tungsten (W) and molybdenum (Mo) in the water column and sediments of an euxinic (e.g. Black Sea, top) and a hypoxic system (e.g. Landsort Deep between 1960-2000, bottom). From Dellwig et al. 2019 Earth-Science Reviews 193, 1-23.
1989-1996 Studies of chemistry at the Carl-von-Ossietzky University of Oldenburg. Diploma thesis: „Geochemische Untersuchungen an holozänen Ablagerungen des NW-deutschen Küstenraums“
1996-1999 PhD at the Carl-von-Ossietzky University of Oldenburg. Title: “Geochemistry of Holocene coastal deposits (NW Germany): Palaeoenvironmental reconstruction”
2000-2006 PostDoc at the Institute for Chemistry and Biology of the Marine Environment (ICBM, University of Oldenburg) in the Microbiogeochemistry Group of H.-J. Brumsack.
2006-2009 PostDoc at the Leibniz Institute for Baltic Sea Research, Marine Geology department.
Seit 2009-09 Senior scientist at the Leibniz Institute for Baltic Sea Research, Marine Geology department.