Teunis Jansen

Profile

Fish and fisheries science in Greenland.
From a broad background in marine biology, I have specialized in quantitative fisheries ecology with a focus on pelagic fish in the arctic. I lead research on population dynamics and assessments of the status and future development of commercially important fish stocks and related fisheries in Greenlandic waters. This involves research in population ecology such as stock structure, migration, feeding ecology, behavior and key population dynamic rates, e.g. fecundity, growth and recruitment. Within ICES, I chair and participate in stock assessment expert groups, providing advice for sustainable fisheries management. The scientific advice is presented to public sector authorities, the industry and the press. Furthermore, I supervise, lecture, develop and lead acoustic surveys.

Research and teaching information

PhD supervision

• James Dunning. Graduated: “Fisheries ecosystems of Greenland: applications of new broadband acoustic technology in support of fisheries management.”.
• Peter Fink-Jensen. Graduated. “Capelin Migration and Stock Structure using Otolith Microchemistry”.
• Søren Post. Graduated. “Blue whiting (Micromesistius poutassou): Behaviour and distribution in Greenland waters”.
• John Kathena. Graduated. Worked on hakes in the Benguela Current Ecosystem.

Postdocs

• Kjetil Gjeitsund Thorvaldsen. Ongoing. Pelagic arctic ecosystem analysis using acoustic data from long-term moored echosounders. 
• Gitte Høj Jensen. Completed. Mackerel ecology. 

Lecturing

• Fisheries Technology (BEng) - DTU (Sisimiut, Greenland). 2020 - ...
• Fisheries and hunting course. Greenland University. March 2016 and 2017.
• EcoFish (Angola, Namibia) and 4 FishFrame (Riga, Świnoujście, Copenhagen) workshops.

New species described

• Westwoodilla tone (Jansen, 2002)
• Westwoodilla helle (Jansen, 2002)

Awards

• ICES service award (2024) for chairing NWWG in 2021-2024

Curriculum

2014 – 2015
Postdoc. Fisheries science. Greenland Institute of Natural Resources.
Pelagic Fish, Fisheries and Climate Change - Research and Assessment. Population ecology and behaviour, Stock assessment, Scientific writing, Mathematical modeling, Statistical analysis of large data sets, Literature review, R, International expert groups, press contact, presenting scientific advice to public sector authorities.

2013 – 2014
Postdoc. Fisheries science. Benguela Current Commission (BCC).
Fish and Fisheries - Research and Assessment. Population ecology and behaviour, Stock assessment, Capacity building, Scientific writing, Mathematical modeling, Statistical analysis of large data sets, Literature review, R, ADMB, SAM, GeoPop, International teamwork.

2008 – 2013
Fisheries biologist. DTU AQUA.
Fish and Fisheries - Research, Assessment and Advice. Population ecology and behaviour, Stock assessment, Statistical analysis of large data sets, Literature review, Scientific writing, Field work (acoustic and trawl surveys), Mathematical modeling, R, International teamwork, press contact.

2001- 2008
Fisheries data biologist and software/database developer. DTU AQUA.

1999 – 2001
Software Developer. Novo Nordisk IT.

1999
Research Assistant. Phuket marine biological station, Thailand. DANIDA.
Organizing of international workshop on Andaman sea crustacean fauna and participation in the amphipod research team.

1998
Research Assistant. Danish Fisheries Research Institute.
Marine benthic invertebrate biodiversity research in the North Sea. Development of methods, species identification, creation of a reference collection.