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50072605_2 / 2021/KC 2

PhD position Marine/Aquatic Biogeochemistry or Biology

Beginn der Ausschreibung10.11.2021
Ende der Ausschreibung12.12.2021
Institut bzw. BereichInstitut für Kohlenstoff-Kreisläufe
Jetzt bewerbenZum Bewerberportal
BewerbermanagementFrau Stella Knufinke

At Helmholtz-Zentrum Hereon, Institute of Carbon Cycles, the Department Aquatic Nutrient Cycles invites applications for a PhD position on ‘Ecosystem service capacity and state of seafloor habitats in the western Black Sea’. This position is funded for a fixed-term period of 3 years through the HORIZON2020 Project DOORS – Developing Optimal and Open Research Support for the Black Sea. More information on the project is available at https://www.doorsblacksea.eu/ .

Study site is the western Black Sea shelf. The overall aim of this PhD study is to assess the state of selected key seafloor habitats on the western Black Sea shelf with regard to recovery of biodiversity and ecosystem functioning and ‑service capacity in regulating eutrophication and climate change pressures. The successful candidate is expected to work in a large team of a European research project.

Your tasks

  • assessment of seafloor nutrient cycling capacity through measurements of sediment-water fluxes of nutrients and oxygen using benthic flux chambers and sediment core incubation experiments
  • assessment of pelagic turnover rates of organic matter through incubation experiments
  • measurement of nutrients and oxygen
  • study of benthic macrofauna through sediment core fauna analysis and benthic habitat mapping by underwater video imaging and analysis
  • analysis (including statistical) and interpretation of data
  • assessment of influence of faunal activity on benthic turnover rates of nutrients and oxygen
  • contribution to harmonization of methods in Black Sea research
  • contribution to project reporting obligations
  • presentations of results at project meetings and international conferences
  • writing of scientific publications in peer-reviewed journals for the PhD thesis

Your profile

  • master’s degree in Marine/Aquatic Biology or Biogeochemistry
  • expertise in benthic macrofauna or habitat studies and sediment-water nutrient fluxes is essential
  • excellent fieldwork and laboratory skills: experience in application of in situ instrumentation, underwater imaging systems as well as analytical background, knowledge in nutrient measurements and benthic macrofauna analyses is desirable
  • solid skills in statistics and a scientific programming language (e.g. R, Matlab, Python)
  • very good knowledge of English is essential, German is desirable (working languages are English and German)
  • learning and knowledge sharing by actively seeking opportunities to learn from others and sharing best practice
  • analytical thinking, scientific creativity and scientific credibility
  • very good communication and scientific writing skills
  • teamwork in an international and interdisciplinary setting
  • willingness and proven physical ability to participate in seagoing research campaigns

We offer you

  • multinational work environment with ca. 1,100 colleagues from more than 50 nations
  • extensive options of vocational training (i. a. expert seminars, language courses or leadership seminars)
  • flexible working hours and various models to ensure the compatibility of family and career
  • excellent infrastructure, including a scientific in-house library as well as modern work spaces
  • remuneration according to the standards of the collective wage agreement TV-AVH including further social benefits
  • free employee advice – Employee Assistance Program (EAP)
  • childcare offers
  • Welcome Office, guest accommodation
  • canteen at the Geesthacht location

Equality of opportunity is an important part of our personnel policy.

Severely disabled persons and those equaling severely disabled persons who are equally suitable for the position will be considered preferentially within the framework of legal requirements.


Then we are looking forward to receiving your comprehensive application documents (motivation letter, CV, transcripts, certificates etc.) indicating the reference number 2021/KC 2.

Apply now