Doctoral researchers in the DFG Graduate Program "Biota-Mediated Effects on Carbon Cycling in Estuaries (RTG2530)– subproject "Upscaling of fish mediated C cycling in estuaries"

InstitutionFaculty of Mathematics, Informatics and Natural Sciences, Department of Biology, Institute of Plant Science and Microbiology

Salary levelEGR. 13 TV-L

Start date , fixed till This is a fixed-term contract in accordance with Section 2 of the academic fixed-term labor contract act (Wissenschaftszeitvertragsgesetz, WissZeitVG)).

Application deadline

Scope of workpart-time

Weekly hours65 % of standard work hours per week

The overall mission of the Research Training Group 2530 (RTG 2530) is to fill existing knowledge gaps on biota-mediated effects on estuarine C cycling under current conditions and with respect to global change scenarios. Embedded into the inspiring academic environment of the University of Hamburg, RTG 2530 provides Doctoral and Postdoctoral Researchers an outstanding platform for their career development. The RTG has been established by an interdisciplinary group of 17 Principal Researchers with scientific backgrounds ranging from terrestrial and marine ecology, via geoscience to microbiology and molecular animal biology. The RTG is funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG). Currently, we have 14 open positions (TVL E13, 65%) for doctoral researchers (see ).

Your responsibilities

Active participation in a structured graduate program.

The doctoral researcher will join RTG 2530 and the Ecology of Living Marine Resources group at the Institute of Marine Ecosystem and Fisheries Science (IMF). The project spans fish ecophysiology, biogeochemistry, and macroecology, integrating experiments with literature-based synthesis to quantify fish-mediated carbon cycling in estuaries and coastal waters. Core tasks include: (i) laboratory experiments testing how biotic and abiotic drivers influence metabolic rates across species and life stages; (ii) compilation and synthesis of published datasets to reconstruct seasonal to long-term dynamics in fish diversity, biomass, and metabolism; and (iii) scaling analyses that translate organism-level processes into ecosystem-level carbon and nutrient budgets. The precise focus will be refined with the successful candidate to ensure feasibility and fit with skills and emerging opportunities.

Your profile

A university degree in the field(s) of i.e., Biology, Geosciences, or Environmental Sciences

The successful candidate should have knowledge and experience in fish ecology/physiology, marine biogeochemistry, and/or environmental sciences. Experience with aquatic respirometry and/or biogeochemical measurements (e.g., oxygen/CO₂ fluxes) is beneficial. We expect strong team spirit, field and laboratory experience, solid scientific writing, and proficiency in biostatistics and data analysis (e.g., R or Python). Good oral and written English skills are required.

We offer

• Reliable remuneration based on wage agreements
• Continuing education opportunities
• University pensions
• Attractive location
• Flexible working hours
• Work-life balance opportunities
• Health management, EGYM Wellpass
• Educational leave

• 30 days of vacation per annum

• a structured and interdisciplinary program with colloquia and workshops

• an inspiring university environment with international visiting scholars
• funding for international research stays for members of the Research Training Group
• excellent research infrastructure with administrative offices, shared workspaces and an attractive working environment
• a wide range of support services during the doctoral phase and national and international continuing education and training opportunities
• participation in cultural and scientific university events

Universität Hamburg—University of Excellence is one of the strongest research educational institutions in Germany. Our work in research, teaching, educational and knowledge exchange activities is fostering the next generation of responsible global citizens ready to tackle the global challenges facing us. Our guiding principle "Innovating and Cooperating for a Sustainable Future in a digital age" drives collaboration with academic and nonacademic partner institutions in the Hamburg Metropolitan Region and around the world. We would like to invite you to be part of our community to work with us in creating sustainable and digital change for a dynamic and pluralist society.

The University of Hamburg is committed to equity. Diversity enriches our university life, whether in our studies, research, teaching, education, or workplace. We therefore welcome all applications, regardless of gender, gender identity, sexual orientation, ethnic or social background, age, religion or belief, disability, or chronic illness.

Severely disabled and disabled applicants with the same status will receive preference over equally qualified non-disabled applicants.

Instructions for applying

Contact

Prof. Dr. Flemming Dahlke

Susanne Stirn

Reference number

312

Location

Große Elbstraße 133
22767 Hamburg

Application deadline

Use only the online application form to submit your application with the following documents:

• cover letter
• CV
• copies of degree certificate(s)
• summary of your MA thesis

The selection days will take place online from December 8 -9, 2025.

If you experience technical problems, send an email to -