University of Hamburg - to research, to teach, to educate and form, to homepage
Research Training Group 2530
RTG2530Biota-mediated effects on Carbon cycling in Estuaries

Photo: UHH/Denstorf

Congratulations, Jesse Theilen!

3 November 2025, by RTG 2530

Jesse Theilen wears his doctoral hat.

Photo: UHH/RTG2530/Grebe

On 6 October 2025, the RTG 2530 once again celebrated with a festive presentation of a beautifully decorated doctoral hat – this time to Jesse Theilen, who successfully defended his PhD thesis on “Fish fauna structure, feeding ecology and growth of keystone fish species in the Elbe and Odra estuaries”. Many friends and colleagues from the RTG 2530, as well as from the Leibniz Institute for the Analysis of Biodiversity Change (LIB), came to the Institute of Plant Science and Microbiology (IPM) at the University of Hamburg to attend the defence and to congratulate him.

Everyone raises their glasses to celebrate Jesse, who has just successfully defended his doctoral thesis. Photo: UHH/RTG2530/Grebe
The doctoral hat features a ship, symbolising Jesse's 25 days on board the “Ostetal” during his research collecting samples. Photo: UHH/RTG2530/Grebe

Latest articles

Elisa Schaum with headphones

Photo: Stefie Schnell

07.10.2025|Blog GRK2530
Elisa Schaum is the new spokesperson of the RTG 2530
Since October 1, 2025, Prof. Dr. Elisa Schaum, the former deputy spokesperson, has become the new spokesperson for RTG 2530. Prof. Dr. Kai Jensen, the former spokesperson, will continue as her deputy until Junior Prof. Dr. Philipp Porada takes over this role in April 2026.
Group photo of the RTG 2530 members.

Photo: UHH/RTG2530/Grebe

01.10.2025|Blog GRK2530
Fifth Retreat of the RTG 2530
Once a year, the members of the RTG 2530 come together for a retreat to exchange ideas intensively in a special setting and to get to know each other better. This year, they did not need to travel far – the destination was the green and peaceful Hasseldieksdamm district of Kiel.