Modelling Fish Populations in Lakes and Reservoirs


Workplace: Institute of Hydrobiology BC CAS
Employment relationship: Employment contract
Job type: Researcher
Researcher profile: R2, R3
Duration: Fixed-term
Hours per week: 40
Job status: Full-time
Application deadline: 10. 4. 2023


We are looking for an enthusiastic researcher or programmer to model the dynamics of fish populations and communities in freshwater lakes and reservoirs at the Institute of Hydrobiology (, Biology Centre of the Czech Academy of Sciences, Czech Republic.

The successful candidate will use long-term quantitative limnological data ranging from nutrients to fish for multiple lakes and reservoirs, curated by the Institute, and develop models to decipher the effects of various anthropogenic drivers (such as recreational fishing, warming and eutrophication) on fish population dynamics in lakes and reservoirs. These models will be used to answer fundamental ecological questions and/or provide expert advice for evidence-based management of recreational fisheries, water quality and reservoir operations.

The successful candidate will work in an experienced and dynamic team of aquatic ecologists at the Institute. She/he will have access to an extensive database with information on environmental parameters, fish growth, age distribution, size, abundance, biomass, recruitment and recreational catches in freshwater reservoirs and lakes in the Czech Republic and elsewhere. The project will be linked to internationally funded, multi-group research projects and will provide ample opportunities to pursue the applications own research ideas at a later stage. Close collaboration with Prof. David Boukal, University of South Bohemia, Ceske Budejovice ( is expected.


Min. education level: Master's degree
Field of education: ecology, limnology, environmental modelling, physical oceanography, applied mathematics, computer science or related fields

Desired skills and experience:

  • MSc/PhD in ecology, limnology, environmental modelling, physical oceanography, applied mathematics, computer science or related fields
  • Proven ability to pursue scientifically challenging questions, high motivation and a vision for creative research
  • Interest in modelling individual life histories, population dynamics and food webs
  • Good knowledge of programming in R, Matlab, C/C++, Python, Java or similar
  • Good written and spoken English
  • Promising publication record. commensurate with the career stage
  • Good knowledge of aquatic ecosystem processes and previous work in a multidisciplinary environment is preferred
  • The ideal candidate should have experience with fish population dynamics models or other models of structured populations, especially those that deal with uncertainty (e.g. Bayesian approaches)


  • 5 weeks of paid holiday per year in total for 1 FTE
  • Subsidized lunches in our own canteen
  • Standard health insurance and social security
  • Benefits from Social fund and student benefits
  • Working in a stable, prestigious research institution of international importance
  • Welcome service and further support for foreigners (HR Award)
  • Friendly & stimulating international working environment
  • Work-life balance in a middle-sized university city offering options for outdoor, sport & cultural activities
  • Free language classes (Czech for foreigners, English for Czechs)
  • Opportunity to take part in mentoring programmes as a mentor or a mentee
  • Concessionary mobile tariff and banking services at the contractual operator and bank
  • Access to accommodation in dormitories at the campus shared by the Biology Centre and the University of South Bohemia (for PhD students)


Details of the position:

Target start date is April 2023 (negotiable). The initial appointment will be for 24 months, with an extension of up to 5 further years, depending on performance.

We offer a very competitive salary by local standards (up to ca. 2500 EUR per month with additional performance bonuses for published papers and supervised projects) commensurate with the experience and skills of the applicant. The successful candidate will be encouraged to develop his/her own research agenda consistent with the mission of the Institute.


The Biology Centre of the Czech Academy of Sciences holds the HR Excellence in Research Award. Our selection process meets European standards for recruitment of researchers ( and we provide our employees from abroad with welcome service (visa application, administration, relocation & settlement support).

Ceske Budejovice (2 hours south of the capital Prague) is a middle-sized city with ca. 100K inhabitants, relaxed atmosphere, over 750 years of tradition and a breathtaking countryside around. Both the town and the surrounding countryside provide numerous opportunities for research and leisure activities. There is also a growing international expert community at the Biology Centre CAS (BC CAS, and the University of South Bohemia (USB, In addition to that, the living costs are still low by international standards. Check out our Guide for Expats ( to read about life in the city and the Czech Republic.

Foreign applicants will receive assistance with relocation to the Czech Republic. The Institute can also help secure non-commercial accommodation on the joint campus of the Biology Centre and the University. Free Czech language courses are available to foreign staff and students to help them achieve a basic level of language proficiency in everyday situations. The position includes standard health and social security benefits, 25 days of paid leave per year, support for boarding, recreational and holiday activities, a free mobile phone, coverage of expenses for necessary travel and SW/HW, and assistance with moving family members. The Biology Centre’s ongoing collaboration with the University opens up the opportunity to supervise undergraduate and postgraduate students and to be involved in teaching specialised courses as part of the post.


Applicants should submit the following documents via the REPLY button at the bottom of our official site by 10 April 2023.

1) Cover letter outlining main research interests,
2) CV including a full list of publications,
3) Copy of PhD (postdoc position) or MSc (PhD position) diploma,
4) Copies of 2–3 relevant publications (optional for PhD position),
5) Contact details of references.

Preliminary enquiries are welcome, contact prof. Jan Kubečka (Tato e-mailová adresa je chráněna před spamboty. Pro její zobrazení musíte mít povolen Javascript.).