2021
Mesopelagic flesh shear viscosity estimation from in situ broadband backscattering measurements by a viscous-elastic model inversion
Babak Khodabandeloo, Mette Dalgaard Agersted, Thor A. Klevjer, Geir Pedersen, Webjørn Raunsgård Melle
ICES Journal of Marine Science
78
p. 3147-3161
2021
Mass estimates of individual gas-bearing mesopelagic fish from in situ wideband acoustic measurements ground-truthed by biological net sampling
Mette Dalgaard Agersted, Babak Khodabandeloo, Thor A. Klevjer, Eva García-Seoane, Espen Strand, Melanie Underwood, Webjørn Raunsgård Melle
ICES Journal of Marine Science
78
p. 3658-3673
2021
Application of an unsupervised clustering algorithm on in situ broadband acoustic data to identify different mesopelagic target types
Mette Dalgaard Agersted, Babak Khodabandeloo, Yi Liu, Webjørn Melle, Thor A Klevjer
ICES Journal of Marine Science
78
p. 2907-2921
2021
Flexible behaviour in a mesopelagic fish (Maurolicus muelleri)
Svenja Christiansen, Thor Aleksander Klevjer, Anders Røstad, Dag Lorents Aksnes, Stein Kaartvedt
ICES Journal of Marine Science
78
p. 1623-1635
2021
Estimating target strength and physical characteristics of gas-bearing mesopelagic fish from wideband in situ echoes using a viscous-elastic scattering model
Babak Khodabandeloo, Mette Dalgaard Agersted, Thor Aleksander Klevjer, Gavin John Macaulay, Webjørn Raunsgård Melle
Journal of the Acoustical Society of America
149
p. 673-691
2020
Fine-scale observations of physical and biological environment along a herring feeding migration route
Webjørn Raunsgård Melle, Thor A. Klevjer, Espen Strand, Peter H. Wiebe, Aril Slotte, Geir Huse
Deep-Sea Research Part II: Topical Studies in Oceanography
180
2020
Dynamics of phytoplankton species composition, biomass and nutrients in the North Atlantic during spring and summer - A trans-Atlantic study
Lars Johan Naustvoll, Webjørn Raunsgård Melle, Thor A. Klevjer, Kenneth F. Drinkwater, Espen Strand, Tor Knutsen
Deep-Sea Research Part II: Topical Studies in Oceanography
180
2020
Spatial distributions and seasonality of four Calanus species in the Northeast Atlantic
Espen Strand, Espen Bagøien, Martin Edwards, Cecilie Broms, Thor A. Klevjer
Progress in Oceanography
185
p. 1-18
2020
Structure and functioning of four North Atlantic ecosystems - A comparative study
Webjørn Raunsgård Melle, Thor A. Klevjer, Kenneth F. Drinkwater, Espen Strand, Lars Johan Naustvoll, Peter H. Wiebe, Dag Lorents Aksnes, Tor Knutsen, Svein Sundby, Aril Slotte, Nicolas Dupont, Anne Gro Vea Salvanes, Rolf Korneliussen, Geir Huse
Deep-Sea Research Part II: Topical Studies in Oceanography
180
p. 1-13
2020
Vertical distribution and migration of mesopelagic scatterers in four north Atlantic basins
Thor A. Klevjer, Webjørn Raunsgård Melle, Tor Knutsen, Dag Lorents Aksnes
Deep-Sea Research Part II: Topical Studies in Oceanography
180
2020
Ecology of mesozooplankton across four North Atlantic basins
Espen Strand, Thor A. Klevjer, Webjørn Raunsgård Melle, Tor Knutsen
Deep-Sea Research Part II: Topical Studies in Oceanography
2020
An acoustic method to observe the distribution and behaviour of mesopelagic organisms in front of a trawl
Melanie Underwood, Eva García-Seoane, Thor A. Klevjer, Gavin Macaulay, Webjørn Raunsgård Melle
Deep-Sea Research Part II: Topical Studies in Oceanography
2020
Diel vertical migration and individual behavior of nekton beyond the ocean's twilight zone
Stein Kaartvedt, Anders Røstad, Svenja Christiansen, Thor Aleksander Klevjer
Deep Sea Research Part I: Oceanographic Research Papers
160
p. 1-6
2019
Micronekton biomass distribution, improved estimates across four north Atlantic basins
Thor Aleksander Klevjer, Webjørn Raunsgård Melle, Tor Knutsen, Espen Strand, Rolf Korneliussen, Anne Gro Vea Salvanes, Peter H. Wiebe
Deep-sea research. Part II, Topical studies in oceanography
2019
Micronekton biomass distribution, improved estimates across four north Atlantic basins
Thor A. Klevjer, Webjørn Raunsgård Melle, Tor Knutsen, Espen Strand, Rolf Korneliussen, Nicolas Dupont, Anne Gro Vea Salvanes, Peter H. Wiebe
Deep-Sea Research Part II: Topical Studies in Oceanography
p. 1-11
2018
Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles
Geraint A. Tarling, Sally E. Thorpe, Sophie Fielding, Thor A. Klevjer, Alexey Ryabov, Paul J. Somerfield
Journal of Crustacean Biology
38
p. 716-727
2016
Large scale patterns in vertical distribution and behaviour of mesopelagic scattering layers
Thor A. Klevjer, Xabier Irigoien, Anders Røstad, Eugenio Fraile-Nuez, Verónica María Benítez-Barrios, Stein Kaartvedt
Scientific Reports
6
2016
Evidence for light-controlled migration amplitude of a sound scattering layer in the Norwegian Sea
Eirik Norheim, Thor A. Klevjer, Dag Lorents Aksnes
Marine Ecology Progress Series
551
p. 45-52
2016
Zooplankton at deep Red Sea brine pools
Stein Kaartvedt, andré Antunes, Anders Røstad, Thor A. Klevjer, Hege Finsås Vestheim
Journal of Plankton Research
38
p. 679-684
2015
Social behaviour in mesopelagic jellyfish
Stein Kaartvedt, Karl Inne Ugland, Thor A. Klevjer, Anders Røstad, Josefin Titelman, Ingrid Solberg
Scientific Reports
5
p. 1-8
2014
Lévy night flights by the jellyfish Periphylla periphylla
Karl Inne Ugland, Dag Lorents Aksnes, Thor A. Klevjer, Josefin Titelman, Stein Kaartvedt
Marine Ecology Progress Series
513
p. 121-130
2014
Vertical distribution and diel vertical migration of krill beneath snow-covered ice and in ice-free waters
Hege Vestheim, Anders Røstad, Thor A. Klevjer, Ingrid Solberg, Stein Kaartvedt
Journal of Plankton Research
36
p. 503-512
2012
Distribution and diel vertical movements of mesopelagic scattering layers in the Red Sea
Thor A. Klevjer, Daniel J. Torres, Stein Kaartvedt
Marine Biology
159
p. 1833-1841
2012
Inverse vertical migration and feeding in glacier lanternfish (Benthosema glaciale)
Eivind Dypvik, Thor A. Klevjer, Stein Kaartvedt
Marine Biology
159
p. 443-453
2012
Internal wave-mediated shading causes frequent vertical migrations in fishes
Stein Kaartvedt, Thor A. Klevjer, Dag Lorents Aksnes
Marine Ecology Progress Series
452
p. 1-10
2012
Continuous acoustic studies of overwintering sprat Sprattus sprattus reveal flexible behavior
Ingrid Solberg, Thor A. Klevjer, Stein Kaartvedt
Marine Ecology Progress Series
464
p. 245-256
2012
Antarctic krill swarm characteristics in the Southeast Atlantic sector of the Southern Ocean
Bjørn Are Krafft, Georg Skaret, Tor Knutsen, Webjørn Raunsgård Melle, Thor A. Klevjer, Henrik Søiland
Marine Ecology Progress Series
465
p. 69-83
2011
Seabed foraging by Antarctic krill: Implications for stock assessment, bentho-pelagic coupling, and the vertical transfer of iron
Katrin Schmidt, Angus Atkinson, Sebastian Steigenberger, Sophie Fielding, Margaret C. M. Lindsay, David Pond, Geraint A. Tarling, Thor A. Klevjer, Claire S. Allen, Stephen Nicol, Eric P. Achterberg
Limnology and Oceanography
56
p. 1411-1428
2011
Krill (Meganyctiphanes norvegica) swim faster at night
Thor A. Klevjer, Stein Kaartvedt
Limnology and Oceanography
56
p. 765-774
2011
Beyond the average: Diverse individual migration patterns in a population of mesopelagic jellyfish
Stein Kaartvedt, Josefin Titelman, Anders Røstad, Thor A. Klevjer
Limnology and Oceanography
56
p. 2189-2199
2010
Swarm characteristics of Antarctic krill Euphausia superba relative to the proximity of land during summer in the Scotia Sea
Thor A. Klevjer, GA Tarling, S Fielding
Marine Ecology Progress Series
409
p. 157-170
2010
Trophic Structure and Community Stability in an Overfished Ecosystem
Anne Christine Utne-Palm, Anne Gro Vea Salvanes, Bronwen Currie, Stein Kaartvedt, Göran Erik Nilsson, Victoria Anne Braithwaite, Jonathan Anthony William Stecyk, Matthias Hundt, Megan van der Bank, Bradley Flynn, Guro Katrine Sandvik, Thor A. Klevjer, Andrew Kvassnes Sweetman, Volker Brüchert, Karin Pittman, Kathleen R Peard, Ida Gjervold Lunde, Rønnaug Strandabø, Mark J Gibbons
Science
329
p. 333-336
2009
Sprat Sprattus sprattus can exploit low oxygen waters for overwintering
Stein Kaartvedt, Anders Røstad, Thor A. Klevjer
Marine Ecology Progress Series
390
p. 237-249
2009
In situ behaviour and acoustic properties of the deep living jellyfish Periphylla periphylla
Thor A. Klevjer, Stein Kaartvedt, Ulf Båmstedt
Journal of Plankton Research
31
p. 793-803
2009
Diel vertical migration of the deep-water jellyfish Periphylla periphylla simulated as individual responses to absolute light intensity
Nicolas Dupont, Thor A. Klevjer, Stein Kaartvedt, Dag Lorents Aksnes
Limnology and Oceanography
54
p. 1765-1775
2009
Use of bottom-mounted echo sounders in exploring behavior of mesopelagic fishes
Stein Kaartvedt, Anders Røstad, Thor A. Klevjer, Arved Staby
Marine Ecology Progress Series
395
p. 109-118
2009
Variability and predictability of Antarctic krill swarm structure
GA Tarling, Thor A. Klevjer, S Fielding, J Watkins, A Atkinson, E Murphy, R Korb, M Whitehouse, R Leaper
Deep Sea Research Part I: Oceanographic Research Papers
56
p. 1994-2012
2008
Behavior of individual mesopelagic fish in acoustic scattering layers of Norwegian fjords
Stein Kaartvedt, Thomas Torgersen, Thor A. Klevjer, Anders Røstad, Jennifer A. Devine
Marine Ecology Progress Series
360
p. 201-209
2007
Diel vertical migration of individual jellyfish (Periphylla periphylla)
Stein Kaartvedt, Thor A. Klevjer, Thomas Torgersen, Tom Asbjørn Sørnes, Anders Røstad
Limnology and Oceanography
52
p. 975-983
2006
In situ target strength and behaviour of northern krill (Meganyctiphanes norvegica)
Thor A. Klevjer, Stein Kaartvedt
ICES Journal of Marine Science
63
p. 1726-1735
2006
Fish are attracted to vessels
Anders Røstad, Stein Kaartvedt, Thor A. Klevjer, Webjørn Melle
ICES Journal of Marine Science
63
p. 1431-1437
2005
Piscivorous fish patrol krill swarms
Stein Kaartvedt, Anders Røstad, Øyvind Fiksen, Webjørn Melle, Thomas Torgersen, Mari Breien, Thor A. Klevjer
Marine Ecology Progress Series
299
p. 1-5
2005
Piscivorous fish patrol krill swarms
Stein Kaartvedt, Anders Røstad, Øyvind Fiksen, Webjørn Melle, Thomas Torgersen, Mari Tiseth Breien, Thor A. Klevjer
Marine Ecology Progress Series
299
p. 1-5
2004
Vertical distribution and feeding patterns in fish foraging on the krill Meganyctiphanes norvegica
Maren S Rasch Onsrud, Stein Kaartvedt, Anders Røstad, Thor A. Klevjer
ICES Journal of Marine Science
61
p. 1278-1290