Science symposia

Johan Hjort symposium 2019

Challenging the scientific legacy of Johan Hjort: Is it time for a new paradigm shift in marine research?

12–14 June 2019
Bergen, Norway

​​​​Conveners: Olav Sigurd Kjesbu (Norway), Vera Schwach (Norway), Jennifer Hubbard (Canada) and Iain Suthers (Australia)


  • To investigate the past, present and explore potential new directions;
  • To integrate data, information and perspectives, with the aim to reach a more profound understanding in past and present;
  • To search for a deeper insight in the present stage of scientific basis, and encourage search for new ideas and scientific framework;
  • To encourage interdisciplinary across bodies of knowledge; historians and marine / fisheries scientists are invited to contribute and give papers;  
  • To remember, examine and challenge a classic in marine research, Johan Hjort (1914).


  • Johan Hjort (1914): a classic to honour and challenge
  • Vital rates: natural mortality, growth, recruitment, stock dynamics
  • Ocean and ecosystem processes affecting stock productivity
  • Herring: current and long trends in fisheries investigations;
  • Cod: current and long trends in fisheries investigations;
  • Tunas: current and long trends in fisheries investigations;
  • Theories and models in current and past investigations;
  • When should fisheries science revisit the past, and where should it search for new answers?
  • The making of fisheries scientists; heritage and onwards
  • When historians meet marine scientists: a dialogue between historians and invited marine scientists;
  • Science and management: an uneasy pair?
  • Johan Hjort and the Bergen he saw  (Photo exhibition)

 Confirmed speakers:

Professor Ray Hilborn, University of Washington, Seattle, USA: Population dynamics/fisheries management

Director/Research Scientist Robert L. Stephenson, DFO, St Andrews Biological Station, Canada: herring fisheries research

Professor Gudrun Marteinsdottir, University of Iceland, Reykjavik, Iceland: cod fisheries research

Senior Research Scientist Karen Evans, Hobart, Tasmania, Australia: tuna fisheries research

Special dialogue session: 

When historians meet marine scientists
Chair and moderator: President of International Congresses on History of Oceanography (ICHO)/Associate Professor Helen Rozwadowski, University of Connecticut, Groton, USA

​An updated program and the call for papers with deadlines will be sent out early in 2018.

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​​Bergen, at Johan Hjort’s time. Hand coloured photo of the city, as viewed from Fløien around 1903.​​

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Johan Hjort symposium 2019

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