DFG-Leibniz Center for Surface Process and Climate Studies

Home

divider

News

divider

Mission Statement

divider

Research

divider

Continuing Education

divider

Outreach

divider

People

divider

Contact

DirkSachse

Dr. Dirk Sachse

Universität Potsdam
Institut für Geowissenschaften
Leibniz Center for Surface Process and Climate Studies
Karl-Liebknecht-Str. 24-25
Haus 27, Rm. 2.28
14476 Potsdam-Golm
Germany

dsachse @ geo.uni-postdam.de
Phone: +49-331-977-5841
Fax: +49-331-977-5700

 

Research Interests

I am interested in the interactions of the geo-, bio- and hydrosphere through the geological time.
I use biomarkers (organic substances found in sediments which are specific for certain types of organisms or plants) as recorders of ancient ecosystems. By measuring compound-specific isotope ratios (especially hydrogen and carbon) one can distingush sources of these compounds. Changes in isotope ratios over time can record changes the biogeochemical (carbon) and hydrological (hydrogen) cycles, which in turn influence the climate.

Education

05/2002 - 06/2005
Max Planck Institute for Biogeochemistry, Jena, Germany. Ph.D. Student. Thesis title: Compound-specific hydrogen isotopes of sedimentary biomarkers as a new palaeoclimatic proxy". Advisers: Prof. R. Gaupp (University of Jena), PD Dr. Gerd Gleixner (MPI BGC Jena)

03/2002
Diploma in Geology, University of Jena, Germany

10/1995 – 03/2002
University of Jena, Germany. Studies in geology.

09/1997 – 09/1998
Universidad de Granada, Spain. Studies in geology and spanish language.

Professional experience

10/2007 - today
University of Potsdam, Potsdam, Germany, Institute for Earth Sciences

1/2006 - 8/2007
University of Washington, Seattle, WA, U.S.A., School of Oceanography. Postdoc in J. P. Sachs' group

10/2005 - 1/2006
Massachusetts Institute of Technology, Cambridge, MA, U.S.A.,Department of Earth, Planetary and Atmospheric Sciences. Postdoc

10/2005 - 10/2006
Award of a Feodor-Lynen Research Fellowship of the Alexander von Humboldt Foundation to work with: Prof. Julian P. Sachs (MIT/ University of Washington) and Prof. Stjepko Golubic (Boston University)

07/2005 - 10/2005
Max Planck Institute for Biogeochemistry, Jena, Germany. Postdoc.


Publications

Please contact me for reprints.

journal publications

Tyler J.J., Leng M.J., Sloane H.J., Sachse D., Gleixner G. (2008). Oxygen isotope ratios of sedimentary biogenic silica reflect the European transcontinental climate gradient Journal of Quaternary Science 23(4) pp 341-350

Muegler I., Sachse D., Werner M., Xu B., Wu G., Yao T., Gleixner G. (2008). Effect of lake evaporation on dD values of lacustrine n-alkanes: A comparison of Nam Co (Tibetan Plateau) and Holzmaar (Germany) Organic Geochemistry - in press

Sachse D. & Sachs, J.P. (2008). Inverse relationship between D/H fractionation in cyanobacterial lipids and salinity in Christmas Island saline ponds Geochimica et Cosmochimica Acta in press (link to Elsevier)

Krull E., Sachse D., Mügler I., Thiele A. and Gleixner G. (2006). Compound-specific d13C and dD analyses of plant and soil organic matter: A preliminary assessment of the effects of vegetation change on ecosystem hydrology Soil Biology and Biochemistry 38 (11) pp. 3211-3221

Sachse D., Radke J. and Gleixner G. (2006). dD values of individual n-alkanes from terrestrial plants along a climatic gradient - Implications for the sedimentary biomarker record Organic Geochemistry 37(4) pp. 469-483

Radke J., Bechtel A., Gaupp R., Püttmann W., Sachse D, Schwark L. and Gleixner G. (2005). Correlation between hydrogen isotope ratios of lipid biomarkers and sediment maturity Geochimica et Cosmochimica Acta 69(23) pp. 5517-5530

Sachse D., Radke J. and Gleixner G. (2004). Hydrogen isotope ratios of recent lacustrine sedimentary n-alkanes record modern climate variability Geochimica et Cosmochimica Acta 68(23) pp. 4877-4889

Sachse D., Radke J., Gaupp R., Schwark L., Lüniger G. and Gleixner G (2004). Reconstruction of palaeohydrological conditions in a lagoon during the 2nd Zechstein cycle through simultaneous use of dD values of individual n-alkanes and d18O and d13C values of carbonates. International Journal of Earth Sciences 93(4) pp. 554-564

book chapters

Gleixner G., Kramer C., Hahn V., and Sachse D. (2005) The Effect of Biodiversity on Carbon Storage in Soils. In: Ecological Studies, Vol. 176: Forest Diversity and Function: Temperate and Boreal Systems (Eds.: M. Scherer-Lorenzen, C. Koerner, and E.-D. Schulze). Springer-Verlag Berlin Heidelberg

non peer-reviewed publications

Schwalb A., Wrozyna C., Mäusbacher R., Daut G., Kroemer E., Gleixner G., Mügler I., Sachse D., Mosbrugger V., Schütt B., Berking J. (2007) Das Dach der Welt als Klimasensor, Beitrag im DFG Magazin Forschung 2/2007 (in german)

Schulze E-D., Katzschmann L. , Voigt T., Börner A., Huckriede H., Heuse T.,(Autor), Rohrmüller J., Sachse D., Radke J. (2006) Die Geologie der Baugesteine Thüringens: Der Steinfussboden am MPI für Biogeochemie Jena, Weissdorn Verlag Jena (in german)

Gleixner G., Sachse D., Radke J., Werner, M. (2005). Neue Wege zum Paläoklima. In: Jahrbuch der Max-Planck-Gesellschaft 2005 (Annual Report of the Max Planck Society for 2005, only in german)

oral presentations

INVITED "Molecular Rain Gauges: Compound-specific hydrogen isotope ratios of lipid biomarkers as recorders of past changes in the water cycle"; Leibniz-Universität Hannover, Institut für Mineralogie, Hannover, Germany, 8.5. 2008

"Source-water independent processes influence the hydrogen isotopic composition of lipid biomarkers - Two examples: salinity and leaf water evapotranspiration" ; EGU General Assembly, Vienna, Austria, 14.4. 2008

"Towards a paleo-salinity proxy: Decreasing D/H fractionation in algal and bacterial lipids with increasing salinity in Christmas Island saline ponds"; AGU Fall Meeting, San Francisco, CA, 14.12. 2007

INVITED keynote "Prospects of compound-specific hydrogen isotope measurements on lipid biomarkers for paleoclimate applications"; Annual Meeting of the American Chemical Society, Boston, MA, 19.8. 2007

"A major change in Tropical Climate during the Little Ice Age"; 3rd Meeting of the Gary Comer Abrupt Climate Change Fellowship, Palisades, NY, 3.5. 2007

"A major change in Tropical Climate during the Little Ice Age"; Geoforschungszentrum Potsdam, Potsdam, Germany, 23.4. 2007

"Compound-specific hydrogen Isotope Composition of leaf-wax lipids: ecological and paleoclimate applications"; Institute for Integrative Biology, University of California at Berkeley, Berkeley, CA, U.S.A., 2.3. 2007

"Compound-specific hydrogen isotope ratios: a new paleoclimate proxy"; Annual Meeting of the GASIR, Jena, Germany, 12.10. 2005

"Tracking the deciduous tree leaf water isotope signal using compound-specific hydrogen isotope ratios of leaf wax n-alkanes"; Institute for Plant Sciences, ETH Zurich, Switzerland, 2.6. 2005

"Hydrogen isotope ratios of recent lacustrine sedimentary n-alkanes record modern climate variabilty" 1st EGU General Assembly 26.4. - 30.4. 2004, Nice, France

"Compound-specific hydrogen isotopes as a new paleoclimate proxy" Chemical Oceanography Seminar, 3.3. 2004, Massachusetts Institute of Technology (MIT), Cambridge, MA, U.S.A.

"Dead organic matter as a recorder of ancient climate" 2nd Meeting of the MPG PhD representatives 5.11. -7.11. 2003, Dresden, Germany

poster presentations

I. Mügler, D. Sachse, M. Werner, B. Xu, Y. Tandong, G. Gleixner (2005). Compound-specific hydrogen isotope ratios of n-alkanes: A novel tool to reconstruct paleohydrology and paleoclimate on the Tibetan Plateau PAGES Open Science Meeting, 8/2005, Beijing, China - POSTER PRIZE

Krull, E., Gleixner G. and Sachse D. (2004). Compound-specific d13C and dD analyses of plant and soil organic matter: Implications for water sources and C3-C4 vegetation change studies AGU Fall Meeting , 12/2004, San Francisco, U.S.A.

Sachse D., Radke, J., and Gleixner G. (2004).Compound-specific hydrogen isotopes - a new paleoclimate proxy AGU Fall Meeting, 12/2004, San Francisco, U.S.A.

Sachse D., Radke, J., and Gleixner G. (2004). Asessing palaeohydrological changes of lake systems using compound-specific hydrogen isotopes 4th International Symposium on the Tibetan Plateau , 8/2004, Lhasa, Tibet, China.

Sachse D., Radke, J., and Gleixner G. (2003).Is modern climate variabilty recorded in compound-specific hydrogen isotope ratios of sedimentary biomarkers? EGS-AGU-EUG Joint Assembly, 4/2003, Nice, France

Sachse D., Radke, J., Gaupp R., Schwark L., Lüniger G. and Gleixner G. (2002).Reconstruction of palaeohydrological conditions in a lagoon during the 2nd Zechstein cycle through simultaneous use of dD values of individual n-alkanes and d18O and d13C values of carbonates. GEO 2002, 1.10. - 5.10. 2002, Wuerzburg, Germany

Sachse D., Gaupp R., Radke, J. and Gleixner G. (2001). Short-term isotopic variations in carbonates and coexisting organic matter Sediment 2001, 6.6. - 8.6. 2001, Jena, Germany

Sachse D., Gaupp R. and Gleixner G. (2000). Small Scale Isotopic Variations in Carbonates and Preserved Organic Matter - A Methodical Approach ASI2000, 2000, Leipzig, Germany

top