- Press Office
- Recently defended
Recently defended
David Benito Merino
David Benito Merino
Department: HGF MPG Joint Research Group for Deep-Sea Ecology and Technology
Exam Date: Friday, January 17, 2023
Topic of the dissertation:
"Exploring the upper temperature limit of microbial alkane degradation"
Sebastian Miksch

Sebastian Miksch
Department: Molecular Ecology
Exam Date: Wednesday, December 14, 2022
Topic of the dissertation:
"Microbial polysaccharide utilization in sandy surface sediments"
Magda Cardozo Mino
Department: HGF MPG Joint Research Group for Deep-Sea Ecology and Technology
Exam Date: Friday, November 11, 2022
Topic of the dissertation:
"Temporal and spatial dynamics of marine microorganisms in ice-covered seas"
Andrea Castillejos Sepúlveda
Department: Microsensor Group
Exam Date: Monday, September 26, 2022
Topic of the dissertation:
"Microscale cycling of arsenic and iron impacts the regulation of cyanobacterial photosynthesis"
Tina Enders
Department: Symbiosis
Exam Date: Wednesday, July 20, 2022
Topic of the dissertation:
"Distribution and physiology of Alphaproteobacteria living in symbiosis with marine gutless oligochaetes"
Bledina Dede
Department: Molecular Ecology
Exam Date: Monday, June 13, 2022
Topic of the dissertation:
"Microbial ecology of deep-sea hydrothermal plumes"
Elisa Merz
Department: Microsensor Group
Exam Date: Friday, June 3, 2022
Topic of the dissertation:
"The Dark Side of Diatoms - Diatoms link nitrate reduction to sulphide oxidation while fixing CO2"
Laura Zeugner
Department: Molecular Ecology
Exam Date: Monday, March 14, 2022
Topic of the dissertation:
"Visualization of cell-specific traits in marine picoplankton populations"
Clarissa Karthäuser
Department: Biogeochemistry
Exam Date: Friday, December 17, 2021
Topic of the dissertation:
"The role of marine particles for nitrogen loss from oxygen minimum zones"
Maximilian Franke
Department: Symbiosis
Exam Date: Thursday, December 16, 2021
Topic of the dissertation:
"Changing perspectives - from ecology to cellular biology in the bathymodioline symbiosis"
Anna Mankowski
Department: Symbiosis
Exam Date: Wednesday, November 10, 2021
Topic of the dissertation:
"From genomes to communities Evolution of symbionts associated with globally distributed marine invertebrates"
Cedric Hahn
Department: Molecular Ecology
Exam Date: Thursday, November 4, 2021
Topic of the dissertation:
"Ecology and genomics of Archaea involved in anaerobic oxidation of ethane"
Miriam Philippi
Department: Biogeochemistry
Exam Date: Wednesday, October 13, 2021
Topic of the dissertation:
"Moving beyond cyanobacteria: Biogeochemical role of elusive marine N2-fixers"
Marit van Erk
Department: Microsensor Group
Exam Date: Tuesday, September 14, 2021
Topic of the dissertation:
"Microbial activity in energy-rich and redox-variable ecosystems"
Anneke Heins
Department: Molecular Ecology
Exam Date: Monday, August 30, 2021
Topic of the dissertation:
"Identification and isolation of heterotrophic marine particle-associated bacteria"
Dolma Michellod
Department: Symbiosis
Exam Date: Thursday, July 29, 2021
Topic of the dissertation:
"Investigating the lipid profile of animal-microbe symbioses"
Chiara Vanni
Exam Date: Wednesday, July 21, 2021
Topic of the dissertation:
"A computational framework to study microbial genes of unknown function"
Sina Schorn
Research Group: Greenhouse Gases
Exam Date: Monday, July 12, 2021
Topic of the dissertation:
"Microbial methane metabolism in freshwater and marine environments"
Merle Ücker
Department: Symbiosis
Exam Date: Wednesday, April 21, 2021
Topic of the dissertation:
"Metagenomic analyses of a deep-sea mussel symbiosis"
Målin Tietjen
Department: Symbiosis
Exam Date: Thursday, January 28, 2021
Topic of dissertation:
"Physiology and ecology of deep-sea Bathymodiolus symbioses"
Miguel Ángel González Porras
Department: Symbiosis
Exam Date: Tuesday, November 24, 2020
Topic of dissertation:
"Molecular biology of the bacterial intranuclear parasite Ca. Endonucleobacter"
Julia Dürschlag
Department: Biogeochemistry
Exam Date: Friday, November 20, 2020
Topic of dissertation:
"Highly adapted microbial communities drive dinitrogen fixation and export production in the South Pacific Gyre"
Nadine Gerlach
Research Group: HGF MPG Research Group for Deep-Sea Ecology and Technology
Exam Date: Thursday, October 8, 2020
Topic of dissertation:
"Macroalgal polysaccharides - a bittersweet feast for marine bacteria"

Nina Bartlau, née Heinzmann
Department: Molecular Ecology
Exam Date: Monday, October 5, 2020
Topic of dissertation:
"Diversity and function of phages modulating North Sea bacteria"
Thomas Ben Francis
Department: Molecular Ecology
Exam Date: Thursday, September 3, 2020 (at University of Greifswald)
Topic of dissertation:
"Proteogenomics of Marine Polysaccharide Utilisation"
Greta Giljan
Department: Molecular Ecology
Exam Date: Monday, July 13, 2020
Topic of dissertation:
"Flow sorting of marine bacteria for targeted metabolic studies"
Benedikt Geier
Department: Symbiosis
Exam Date: Wednesday, April 15, 2020
Topic of dissertation:
"Correlative mass-spectrometry imaging of animal-microbe symbiosis"
Nadine Lehnen &
Alexander Khachikyan
Department: Biogeochemistry
Exam Date: Friday, March 13, 2020
Topic of dissertation of Nadine Lehnen:
"Symbiotic N2 fixation in the Mediterranean seagrass Posidonia oceanica"
Topic of dissertation of Alexander Khachikyan:
"Physical and chemical properties of single microbial cells"
Andreas Sichert
Exam Date: Friday, January 31, 2020
Topic of dissertation:
"Degradation of recalcitrant algal polysaccharides by marine microbes"
Katharina Kitzinger
Department: Biogeochemistry
Exam Date: Tuesday, August 27, 2019
Topic of dissertation:
"In situ growth and organic nitrogen utilization by the main nitrifiers in the ocean"
Philipp Hach
Exam Date: Thursday, 1st of August 2019
Topic of dissertation:
"Fast non-redfieldian dissolved organic matter turnover matters"
Agata Mystkowska
Exam Date: Friday, July 5, 2019
Topic of dissertation:
"Carbohydrate-binding proteins from marine bacteria"
Anissa Grieb
Research Group: Flow Cytometry
Exam Date: Friday, June 26, 2019
Topic of Dissertation:
"Study of diversity and function of the marine key group Vis6 with cultivation-independent methods"
Rebecca Ansorge
Department: Symbiosis
Exam: Tuesday, March 26, 2019
Topic of dissertation:
"Strain diversity and evolution in endosymbionts of Bathymodiolus mussels"
Jennifer Bachmann
Exam Date: Thursday, March 7, 2019
Topic of dissertation:
"Particles in the spotlight: A measure of aquaculture impact"
Karen Krüger
Department: Molecular Ecology
Exam Date: Wednesday, March 6, 2019
Topic of dissertation:
"Polysaccharide utilization loci and associated genes in marine Bacteroidetes- compositional diversity and ecological relevance"