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BiG: Biogeochemistry & Isotope Geochemistry Group

Univ. Prof. Dr. Stephan M. KRÄMER (Head)

We are a research group directed by Prof. Stephan M. Kraemer investigating biogeochemical processes in sedimentary and weathering environments, in aquatic and terrestrial systems. Our work is process oriented: we strive to gain a molecular level understanding of chemical mechanisms and biological pathways of processes that control the exogenous earth system in time and space including the human environment. Current laboratory and field studies deal with mineral weathering, biomineralization, the control of element cycles by microbial nutrient acquisition, the mechanisms or microbial iron reduction and oxidation, and the isotopic fractionation of Fe during mineral weathering.

Find out more about Biogeochemistry or Isotope Geochemistry

News  (If you use Google Chrome as Browser you need to install an RSS extension so that you can use the RSS Feed.)

Friday, 21. March 2014

Considerations on the shuttle mechanism of FeEDDHA chelates at the soil-root interface in case of Fe deficiency

Walter D. C. Schenkeveld & Arjen M. Reichwein & Erwin J. M. Temminghoff & Willem H. van Riemsdijk

DOI 10.1007/s11104-014-2057-1 (Plant and Soil)

Wednesday, 12. February 2014

Effect of salinity on the skeletal chemistry of cultured scleractinian zooxanthellate corals: Cd/Ca ratio as a potential proxy for salinity reconstruction

Pretet, C., Reynaud, S., Ferrier-Pagès, C., Gattuso, J.-P., Kamber, B., Samankassou, E., 2013. Coral Reefs, 1–12.

DOI: 10.1007/s00338-013-1098-x

Wednesday, 12. February 2014

New Project ‘Synergistic effects of redox processes and ligand controlled dissolution in biological iron acquisition’

A new project has started which explores the molecular mechanisms of synergisms between reductive and ligand controlled dissolution. It has been funded by the FWF in collaboration with the Swiss National Science Foundation. Our...

Tuesday, 1. October 2013

Dr. Chloé Pretet new member of BiG

Chloé Pretet is an isotope geochemist and has been working on Barium and Calcium isotope fractionation in carbonates at the University of Geneva and the University of Bern. She is now assistant in our group and will use of...

Monday, 2. September 2013

Dr. Richard Kimber new member of BiG

Richard Kimber joined our group after completing his PhD on plutonium and americium in contaminated soils. He is interested in the biogeochemistry of metals and will work on metal oxide dissolution mechanisms and on isotope...

Sunday, 1. September 2013

The influence of pH on iron speciation in podzol extracts: Iron complexes with natural organic matter, and iron mineral nanoparticles.

Neubauer, E., Schenkeveld, W. D. C., Plathe, K. L.; Rentenberger, C.; von der Kammer, F. Kraemer, S. M.; Hofmann, T. SCIENCE OF THE TOTAL ENVIRONMENT 461, 108-116

DOI:...

Tuesday, 27. August 2013

Session at the Goldschmidt conference in Florence

Gerwin Koopmans, Tjisse Hiemstra and Walter Schenkeveld organized a well-attended symposium at the Goldschmidt conference in Florence in honour of Prof. Willem van Riemsdijk on the occasion of his retirement. The session was...

Sunday, 18. August 2013

EnvironMetalIsotopes 2013

Stephan Kraemer served on the scientific advisory board of a conference on "Stable metal isotope fractionation - Processes and applications in environmental geochemistry", organized by Jan Wiederhold, ETH Zürich. It was...

Thursday, 15. August 2013

New project on ligand controlled metal oxide dissolution

A new industry-financed project on ligand controlled mineral dissolution mechanisms has started.

Wednesday, 5. June 2013

Workshop on iron isotopes in Jerusalem and the Sea of Galilee, Israel

Prof. Ygal Erel (Hebrew University, Jerusalem) and Prof. Stephan Kraemer organized a hands-on summer school focusing on Fe isotope analysis and application for environmental problems. Lectures were held by internationally...

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Department of Environmental Geosciences
University of Vienna

Althanstraße 14 UZAII
1090 Vienna
T: +43-1-4277-533 01
F: +43-1-4277-9 533
University of Vienna | Universitätsring 1 | 1010 Vienna | T +43-1-4277-0