Research
Current Research Topics
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
? Universitaet Bremen, Annemarie Popp
Overarching goals (high level):
- To study the role of iron cycling in organic matter sequestration/mobilization in marine sediments
- To quantify rates of microbial iron reduction in marine sediments, and their contribution to organic matter oxidation
- To identify microbial players using metal reduction in marine sediments
Key methods and/or infrastructures
- Stable isotope probing of nucleic acids
- Anoxic incubation experiments
- Sequence analysis (amplicons, metagenomes)
- Infrastructure (Anaerobic chamber, Ultracentrifuge, Linux server)
Sediment microbiology
- Ecophysiology of microorganisms in the methanic zone of marine sediments
- Iron-reducing microorganisms in marine sediments
- Methylotrophic methanogens in marine sediments
Current research activities, examples
- Environmental controls of iron-reducing microorganisms in Antarctic marine sediments (ECIMAS), goal: identify controls of organic matter degradation in marine sediments under climate change
- Preservation and mobilization of organic matter by iron (oxy)hydroxides in marine sediments, goal: understand mechanism of organic matter cycling on mineral surfaces
Opportunities for collaborative use of infrastructure/methodologies:
- Determine active microorganisms in your incubations using RNA-based stable isotope probing