MARUM – ZENTRUM FÜR MARINE UMWELTWISSENSCHAFTEN

Entgelt- / Besoldungsgruppe E 13 - Teilzeit 65%
Kennziffer: A194-25
Bewerbungsfrist: 05.08.2025
Öffentliche Ausschreibung
The University of Bremen, MARUM - Center for Marine Environmental Sciences - is offering, subject to the approval of funds, a fixed-term position for a

STELLENBESCHREIBUNG

We are looking for highly motivated candidates to join the newly established Collaborative Research Centre “Carbon Sequestration at Å resolution (CONCENTRATE)”, funded by the German Research Foundation (DFG). This CRC combines the expertise of the University of Greifswald, the University of Bremen, the Max-Planck-Institute for Marine Microbiology Bremen, the Max-Planck-Institute of Colloids and Interfaces Potsdam, the Leibniz Institute for Baltic Sea Research and the Technical University of Berlin.
The aim of CONCENTRATE is to decipher the molecular and microbial processes that lead to the stabilization of glycans in the ocean. In an interdisciplinary approach, the research team combines laboratory experiments with measurements in natural marine habitats. The focus is on the interactions between algae, bacteria, fungi, their glycans and proteins - down to atomic resolution. The elucidation of these microbial and biochemical mechanisms will contribute to a better understanding of carbon fluxes in the oceans.
Within the CRC CONCENTRATE you will work on subproject A03 under the direction of Dr. Greta Reintjes, within an Emmy Noether Junior Research Group “Microbial-Carbohydrate Interactions”. You will investigate the quantitative contribution of the “selfish” mechanism to carbon sequestration. The central working hypothesis is that selfish foraging selectively removes glycans from the collective DOM pool, preventing their degradation by other bacteria and thereby increasing carbon sequestration.

• Cultivation of marine microorganisms
• Preparative purification of glycans using size exclusion chromatography
• Preparative production of fluorescently labelled polysaccharides
• Microbiological degradation studies of defined glycan fragments
• Acquisition, analysis and presentation of scientific data
• Scientific publishing
• Research as part of a dissertation on the topics of the project
• Supporting the research group with general project tasks
• The position offers the opportunity for academic qualification