Research output per year
Research output per year
Personal profile
Research areas
Animal behaviour, bioacoustics, electronic tagging, movements and migration, habitat use, foraging ecology, fish behaviour in fishing gears, trawl selectivity, quality management in food industry.
Education/Academic qualification
Ph.D, Department of Bioscience, Aarhus University
… → 2011
Cand.scient, Norwegian College of Fishery Science, University of Tromsø
… → 2001
External positions
PostDoc, Technical University of Denmark, National Institute of Aquatic Resources
2012
Lecturer, University College of Northern Denmark
2011
Ph.D-student, Technical University of Denmark, National Institute of Aquatic Resources
2007 → 2011
Research assistant, Danish Institute for Fisheries Research
2006 → 2007
Quality Manager, Mack Brewery AS, Norway
2002 → 2006
Lecturer, Norwegian College of Fishery Science, University of Tromsø
1997 → 2002
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 3 Good Health and Well-being -
SDG 14 Life Below Water -
SDG 15 Life on Land
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
Publications
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Rebuttal to the response by Millar and Broadhurst
Herrmann, B., Santos, J., Sistiaga, M., Brčić, J., Karlsen, J. D., Melli, V., Sala, A., Veiga-Malta, T., Brinkhof, J., Petetta, A., Yu, M., Lomeli, M. J. M., Cuende, E., Feekings, J. P. & Krag, L. A., 2026, In: Fisheries Research. 293, 5 p., 107577.Research output: Contribution to journal › Letter › peer-review
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Does soak time influence the effect of artificial light on catch efficiency in snow crab (Chionoecetes opilio) pot fishery?
Cerbule, K., Herrmann, B., Grimaldo, E., Grimsmo, L. & Karlsen, J. D., 2025, In: Aquaculture and Fisheries. 10, 2, p. 330-343Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile18 Downloads (Orbit) -
DragLess - a holistic approach to gear development: reducing roundfish bycatch and drag in the trawl fishery of Norway lobster (Nephrops norvegicus) off Denmark
Krag, L. A., Melli, V., O'Neill, F. G., Hansen, K. & Karlsen, J. D., 2025, In: Ocean and Coastal Management. 267, 11 p., 107722.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile93 Downloads (Orbit) -
Enhancing bycatch escape in trawl fisheries through flow manipulation: a study on Gadoids
Melli, V., O’Neill, F. G., Breddermann, K., Kofoed, J. P. & Karlsen, J. D., 2025, In: Canadian Journal of Fisheries and Aquatic Sciences. 82, p. 1-16Research output: Contribution to journal › Journal article › Research › peer-review
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Letter to the Editor re: Millar and Broadhurst (2025): “Incorrect inference from size-selectivity studies due to widespread misuse of bootstrap confidence bands” [Fisheries Research 281, 107225]
Herrmann, B., Santos, J., Sistiaga, M., Brčić, J., Karlsen, J. D., Melli, V., Sala, A., Veiga-Malta, T., Brinkhof, J., Petetta, A., Yu, M., Lomeli, M. J. M., Cuende, E., Feekings, J. P. & Krag, L. A., 2025, In: Fisheries Research. 290, 6 p., 107514.Research output: Contribution to journal › Letter › peer-review
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ECO-CATCH: Sustainable fisheries initiative for the Baltic and North Sea (116695)
Melli, V. (Project Coordinator), Kindt-Larsen, L. (PI), M C de Sousa Machado, L. (Contact Person), Grigorov, I. (Contact Person), Glemarec, G. (PI), Karlsen, J. D. (PI), Krag, L. A. (PI), Thilakarathna, M. W. S. N. (PhD Student), Abangan, A. (Project Participant), Avsar, E. (Project Participant) & Abdullah, M. (Project Participant)
01/06/2025 → 31/05/2030
Project: Research
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SONUS Vanes (115273)
Karlsen, J. D. (PI), O'Neill, B. (Project Participant) & Krag, L. A. (Project Participant)
European Maritime, Fisheries and Aquaculture Fund
28/05/2024 → 09/10/2027
Project: Research
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ACCELERATOR: Accelerate a transformation towards a sustainable and value optimized catch and processing of fish caught by bottom trawling (114551)
Karlsen, J. D. (Project Coordinator), Avsar, E. (Project Participant), Thorvaldsen, K. G. (Project Participant), Mariani, P. (Project Participant), Thompson, F. F. (Project Participant), Garmund, R. (Project Participant) & Britsch, E. E. (Project Participant)
European Maritime, Fisheries and Aquaculture Fund
01/05/2024 → 05/07/2028
Project: Research
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SONUS Fishery (113798)
Karlsen, J. D. (PI), Krag, L. A. (Project Participant) & Thorvaldsen, K. G. (Project Participant)
European Maritime, Fisheries and Aquaculture Fund
01/02/2024 → 01/02/2027
Project: Research
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Tech-Care: Technological advancements for carbon-footprint reduction in the northern shrimp fishery (113172)
Malta, T. A. M. D. V. (Project Manager), Karlsen, J. D. (Project Participant), Krag, L. A. (Project Participant), O'Neill, B. (Project Participant), Eigaard, O. R. (Project Participant), Neuenfeldt, S. (Project Participant), Thorvaldsen, K. G. (Project Participant), Melli, V. (Project Participant), Bastardie, F. (Project Participant), Egekvist, J. (Project Participant) & Diernæs, L. (PhD Student)
European Maritime, Fisheries and Aquaculture Fund
31/08/2023 → 29/11/2026
Project: Research
Activities
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What will it take to get fish out of the trawl? Creating a Low-Flow Zone within and outside the boundaries of a trawl to incentivize fish escape
Melli, V. (Speaker), O'Neill, B. (Other), Breddermann, K. (Other), Kofoed, J. P. (Other) & Karlsen, J. D. (Other)
13 Feb 2023Activity: Talks and presentations › Conference presentations
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Optimizing the prediction of discard survival of bottom-trawled plaice based on vitality indicators
Uhlmann, S. S. (Speaker), Ampe, B. (Other), Karlsen, J. D. (Other) & Savina, E. (Other)
Feb 2023Activity: Talks and presentations › Conference presentations
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Optomotor response in Atlantic cod (Gadus morhua) – can it be elicited and manipulated by trawl netting?
Karlsen, J. D. (Speaker) & Andersen, N. G. (Other)
15 Feb 2023Activity: Talks and presentations › Conference presentations
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Are differences in the choice of measures when reporting results slowing down the development of horizontally divided trawl gears?
Karlsen, J. D. (Speaker)
27 Sept 2018Activity: Talks and presentations › Conference presentations
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Topic session "Artificial lights with fishing gears" at ICES-FAO Working Group on Fishing Technology and Fish Behaviour
Yochum, N. (Chairman) & Karlsen, J. D. (Chairman)
7 Jun 2018Activity: Attending an event › Participating in or organising workshops, courses, seminars etc.