Dr. Olaf Dellwig
Seestrasse 15
D-18119 Rostock
Germany
Research interests
Behaviour of redox-sensitive trace metals in recent and ancient aquatic ecosystems like coastal environments (e.g. tidal flats of the southern North Sea) or anoxic basins (e.g. Baltic Sea, Black Sea). In particular, I am interested in transfer reactions between the dissolved and particulate phase and the coupling to microbial and sedimentological processes under changing redox conditions. This includes processes in the open water column and in the sediments (pore water, groundwater).
Scientific CV
| 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. |
| Since 2009-09 | Senior scientist at the Leibniz Institute for Baltic Sea Research, Marine Geology department. |
Current projects
„Redox-sensitive Transformationen in Wassersäule und Sediment des nordfriesischen Wattenmeeres“ in cooperation with Michael E. Böttcher (IOW) and Justus E. E. van Beusekom (AWI). Funding by DFG.
Link: http://www.io-warnemuende.de/geo-ag-geochemie.html
BONUS – AMBER „Assessment and Modelling Baltic Ecosystem Response“. Coordination J. Dippner (IOW). Funding by BMBF.
Five selected publications
Schnetger B. and Dellwig O. (2012) Dissolved reactive manganese at pelagic redoxclines (part I): A method for determination based on field experiments. Journal of Marine Systems 90, 23-30.
Dellwig O., Schnetger B., Brumsack H.-J., Grossart H.-P., and Umlauf L. (2012) Dissolved reactive manganese at pelagic redoxclines (part II): Hydrodynamic conditions for accumulation. Journal of Marine Systems 90, 31-41.
Dellwig O., Leipe T., März C., Glockzin M., Pollehne F., Schnetger B., Yakushev E. V., Böttcher M. E., and Brumsack H.-J. (2010) A new particulate Mn-Fe-P-shuttle at the redoxcline of anoxic basins. Geochimica et Cosmochimica Acta 74, 7100-7115.
Beck M., Dellwig O., Schnetger B., and Brumsack H.-J. (2008) Cycling of trace metals (Mn, Fe, Mo, U, V, Cr) in deep pore waters of intertidal flat sediments. Geochimica et Cosmochimica Acta 72, 2822-2840.
Dellwig O., Beck M., Lemke A., Lunau M., Kolditz K., Schnetger B., and Brumsack H.-J. (2007) Non-conservative behaviour of molybdenum in coastal waters: Coupling geochemical, biological, and sedimentological processes. Geochimica et Cosmochimica Acta 71, 2745-2761.
All publications
Submitted/in press:
Bauer A., Böttcher M. E., Liang K., Xia Z., Radziejewska T., Harff J., Dellwig O., Kowalski N., Bosselmann K., Stark A., Schulz-Bull D. E., and Waniek J. J. (2011) Regional differences of hydrographical and sedimentological properties in Beibu Gulf, South China Sea. Journal of Coastal Research, accepted.
Published:
Beck M., Dellwig O., Fischer S., Schnetger B., and Brumsack H.-J. (2011) Trace metal geochemistry of organic carbon-rich watercourses draining the NW German coast. Estuarine Coastal and Shelf Science 104–105, 66-79.
Böttcher M. E., Gehlken P., Gratthof G. G., Schmidt B. C., Effenberger H. S., Geprägs P., Bahlo R., Dellwig O., Leipe T., Neugebauer C., Winde V., Baldermann A., Deutschmann A., Stark A., Gallego-Torres D., and Martinez-Ruiz F. C. (2012) BaMn[CO3]2 - a previously unrecognized double carbonate in brackish sediments: Structural, spectroscopic, and textural tools for future identification. Chemie der Erde - Geochemistry 72, 85-89.
Kowalski N., Dellwig O., Beck M., Grunwald M., Badewien T.H. , Brumsack H.-J., van Beusekom J.E.E., Böttcher M.E. (2012) A comparative study of manganese dynamics in the pelagic and benthic parts of two intertidal systems of the North Sea. Est. Coast. Shelf Sci. 100, 3-17.
Dellwig O., Schnetger B., Brumsack H.-J., Grossart H.-P., Umlauf L. (2012) Dissolved reactive manganese at pelagic redoxclines (part II): Hydrodynamic conditions for accumulation. J. Mar. Sys. 90, 31-41.
Kolditz K., Dellwig O., Barkowski J., Freund H., Brumsack H.-J. (2012) Geochemistry of salt marsh and tidal flat sediments on a barrier island in the southern North Sea (Langeoog, NW Germany). Sedimentology 59, 337-355.
Kolditz K., Dellwig O., Barkowski J., Freund H., Brumsack H.-J. (2012) Salt marsh sedimentation during simulated sea-level rise and its relation to Holocene coastal development of NW Germany. Geo-Mar. Lett. 32, 49-60.
Meyer D., Prien R.D., Dellwig O., Connelly D.P., Schulz-Bull D.E. (2012) In situ determination of iron(II) in the anoxic zone of the Central Baltic Sea using ferene as spectrophotometric reagent. Mar. Chem. 130-131, 21-27.
Moller T., Schulz H., Hamann Y., Dellwig O., Kucera M. (2012) Sedimentology and geochemistry of an exceptionally preserved last interglacial sapropel S5 in the Levantine Basin (Mediterranean Sea). Mar. Geol. 291-294, 34-48.
Schnetger B., Dellwig O. (2012) Dissolved reactive manganese at pelagic redoxclines (part I): A method for determination based on field experiments. J. Mar. Sys, 90 23-30.
Moore, W.S., Beck, M., Riedel, T., van der Loeff, M., Dellwig, O., Shaw, T.J., Schnetger, B., Brumsack, H.-J. (2011) Fluxes of pore waters and associated metals, carbon and nutrients to the German Wadden Sea. Geochim. Cosmochim. Acta 75, 6535-6555.
Nägler T.F., Neubert N., Böttcher M.E., Dellwig O., Schnetger B. (2011) Molybdenum isotope fractionation in pelagic euxinia: Evidence from the modern Black and Baltic Seas. Chem. Geol. 289, 1-11.
Dellwig O., Leipe T., März C., Glockzin M., Pollehne F., Schnetger B., Yakushev E.V., Böttcher M.E., Brumsack H.-J. (2010) A new particulate Mn-Fe-P-shuttle at the redoxcline of anoxic basins. Geochim. Cosmochim. Acta 74, 7100-7115. doi:10.1016/j.gca.2010.09.017
Grunwald M., Dellwig O., Kohlmeier C., Beck M., Kotzur S., Kowalski N., Liebezeit G., Brumsack H.-J. (2010) Nutrient dynamics in a back barrier tidal basin of the Southern North Sea: Time-series, model simulations, and budget estimates. J. Sea Res. 64, 199-212. doi:10.1016/j.seares.2010.02.008
Perner K., Leipe T., Dellwig O., Kuijpers A., Mikkelsen N., Andersen T.J., Harff J. (2010) Contamination of arctic fjord sediments by Pb-Zn mining at Maarmorilik in central West Greenland. Mar. Poll. Bull. 60, 165-1073. doi:10.1016/j.marpolbul.2010.01.019
Grunwald M., Dellwig O., Beck M., Dippner J.W., Freund J.A., Kohlmeier C., Schnetger B., Brumsack H.-J. (2009) Methane in the southern North Sea: Sources, spatial distribution and budgets. Est. Coast. Shelf Sci. 81, 445-456. doi:10.1016/j.ecss.2008.11.021
Kolditz K., Dellwig O., Barkowski J., Beck M., Freund H., Brumsack H.-J. (2009) Effects of De-Embankment on Pore Water Geochemistry of Salt Marsh Sediments: J. Coast. Res. 25, 1222-1235. DOI: 10.2112/08-1053.1
Kowalski N., Dellwig O., Beck M., Grunwald M., Fischer S., Piepho M., Riedel T., Freund H., Brumsack H.-J., Böttcher M.E. (2009) Trace metal dynamics in the water column and pore waters in a temperate tidal system: response to the fate of algae-derived organic matter. Ocean Dyn. 59, 333-350. DOI 10.1007/s10236-009-0192-7
Lemke A., Lunau M., Stone J., Dellwig O., Simon, M. (2009) Spatio-temporal dynamics of suspended matter properties and bacterial communities in the back-barrier tidal flat system of Spiekeroog Island. Ocean Dyn. 59, 277-290. DOI 10.1007/s10236-009-0190-9
Lübben A., Dellwig O., Koch S., Beck M., Badewien T.H., Fischer S., Reuter, R. (2009) Distributions and characteristics of dissolved organic matter in temperate coastal waters (Southern North Sea). Ocean Dyn. 59, 263-275. DOI 10.1007/s10236-009-0181-x
Beck M., Dellwig O., Schnetger B., Brumsack H.-J. (2008) Cycling of trace metals (Mn, Fe, Mo, U, V, Cr) in deep pore waters of intertidal flat sediments. Geochim. Cosmochim. Acta 72, 2822-2840. doi:10.1016/j.gca.2008.04.013
Beck M., Dellwig O., Holstein J.M., Grunwald M., Liebezeit G., Schnetger B., Brumsack H.-J. (2008) Sulphate, dissolved organic carbon, nutrients and terminal metabolic products in deep pore waters of an intertidal flat. Biogeochem. 89, 221-238. DOI 10.1007/s10533-008-9215-6
Beck M., Dellwig O., Liebezeit G., Schnetger B., Brumsack H.-J. (2008) Spatial, seasonal and tidal variations of sulphate, DOC and nutrients in deep pore waters of intertidal flat sediments. Est. Coast. Shelf Sci. 79, 307-316. doi:10.1016/j.ecss.2008.04.007
Dellwig O., Beck M., Lemke A., Lunau M., Kolditz K., Schnetger B., Brumsack H.-J. (2007) Non-conservative behaviour of molybdenum in coastal waters: Coupling geochemical, biological, and sedimentological processes. Geochim. Cosmochim. Acta 71, 2745-2761. doi:10.1016/j.gca.2007.03.014
Dellwig O., Bosselmann K., Kolsch S., Hentscher M., Hinrichs J., Böttcher M.E., Reuter R., Brumsack H.-J. (2007) Sources and fate of manganese in a tidal basin of the German Wadden Sea. J. Sea Res. 57, 1-18. doi:10.1016/j.seares.2006.07.006
Beck M., Dellwig O., Kolditz K., Freund H., Liebezeit G., Schnetger B., Brumsack H.-J. (2007) In situ pore water sampling in deep intertidal flat sediments. Limnol. Oceanogr. Methods 5, 136-144.
Grunwald M., Dellwig O., Liebezeit G., Schnetger B., Reuter R., Brumsack, H.-J. (2007) A novel time-series station in the Wadden Sea (NW Germany): First results on continuous nutrient and methane measurements. Mar. Chem. 107, 411-421. doi:10.1016/j.marchem.2007.04.003
Lunau M., Lemke A., Dellwig O., Simon, M. (2006) Physical and biogeochemical controls of microaggregate dynamics in a tidally affected coastal ecosystem. Limnol. Oceanogr. 51, 847-859. DOI: 10.4319/lo.2006.51.2.0847
Neumann T., Rausch N., Leipe T., Dellwig O., Berner Z., Böttcher M.E. (2005) Intense pyrite formation under low-sulfate conditions in the Achterwasser lagoon, SW Baltic Sea. Geochim. Cosmochim. Acta 69, 3619-3630. doi:10.1016/j.gca.2005.02.034
Freund H., Gerdes G., Streif H., Dellwig O., Watermann F. (2004) The indicative meaning of diatoms, pollen and botanical macro fossils for the reconstruction of palaeoenvironments and sea-level fluctuations along the coast of Lower Saxony; Germany: Quat. Int. 112, 71-87. doi:10.1016/S1040-6182(03)00066-1
Dellwig O., Terjung F., Brumsack H.-J., Reuter R. (2003) Understanding the bioreactor Wadden Sea: A geochemical and physical approach. Berichte - Forschungszentrum Terramare 12, p. 47-50.
Reuter R., Brumsack H.-J., Dellwig O., Grunwald M., Harksen U., Rullkötter J., Terjung F. (2003) A time-series station for continuous measurements in the Wadden Sea: EARSeL eProceedings 3.
Terjung F., Reuter R., Brumsack H.-J., Dellwig O., Grunwald M., Kölsch S., Wernand M. (2003) Characterisation of the tidal flat water column with optical measurements: EARSeL eProceedings 3.
Dellwig O., Böttcher M.E., Lipinski M., Brumsack H.J. (2002) Trace metals in Holocene coastal peats and their relation to pyrite formation (NW Germany). Chem. Geol. 182, 423-442. doi:10.1016/S0009-2541(01)00335-7
Hinrichs J., Dellwig O., Brumsack H.-J. (2002) Lead in sediments and suspended particulate matter of the German Bight: natural versus anthropogenic origin. Appl. Geochem. 17, 621-632. doi:10.1016/S0883-2927(01)00124-X
Dellwig O., Watermann F., Brumsack H.-J., Gerdes G., Krumbein W.E. (2001) Sulphur and iron geochemistry of Holocene coastal peats (NW Germany): a tool for palaeoenvironmental reconstruction. Palaeogeogr. Palaeoclimat. Palaeoecol. 167, 359-379. doi:10.1016/S0031-0182(00)00247-9
Dellwig O., Hinrichs J., Hild A., Brumsack H.-J. (2000) Changing sedimentation in tidal flat sediments of the southern North Sea from the Holocene to the present: a geochemical approach. J. Sea Res. 44, 195-208. doi:10.1016/S1385-1101(00)00051-4
Schnetger B., Hinrichs J., Dellwig O., Shaw T., Brumsack H.-J. (2000) The significance of radionuclides and trace elements in a back barrier tidal area: results from the german Wadden, in Inaba, J., Hisumatsu, S., and Ohtsuka, Y., eds.: Rokkasho, Aomori, Japan, Proceedings of the international workshop on distribution and speciation of radionuclides in the environment, p. 99-106.
Dellwig O., Watermann F., Brumsack H.-J., Gerdes G. (1999) High-resolution reconstruction of a holocene coastal sequence (NW Germany) using inorganic geochemical data and diatom inventories. Est. Coast. Shelf Sci. 48, 617-633. doi:10.1006/ecss.1998.0462
Dellwig O., Gramberg D., Vetter D., Watermann F., Barckhausen J., Brumsack H.-J., Gerdes G., Liebezeit G., Rullkötter J., Scholz-Böttcher B.M., Streif H. (1998) Geochemical and microfacies characterization of a Holocene depositional sequence in northwest Germany. Org. Geochem. 29, 1687-1699. doi:10.1016/S0146-6380(98)00103-X
Dellwig O., Brumsack H.J., Böttcher M.E. (1996) Geochemical characterization of a Holocene sedimentary sequence from the NW german coastal area, in Bottrell, H.S., ed., Fourth International Symposium on the Geochemistry of the Earth`s Surface: Ilkley, England, p. 43-46.