Thor Klevjer

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Forsker
Telefon: 98468396
Avdeling: Plankton

Publikasjoner

Vitenskapelige artikler (NVI)

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
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

Poster

2018

What Drives the Distribution of Antarctic Krill at the South Orkney Islands?

Angelika Renner, S.E. Thorpe, E.F Young, Olav Rune Godø, Thor A. Klevjer, Eugene J. Murphy
2015

Patterns in macrozooplankton and micronekton biomass distribution across four north Atlantic ocean basins

Thor A. Klevjer, Espen Strand, Tor Knutsen, Webjørn Raunsgård Melle, Peter H. Wiebe

Mediebidrag

2013

Lange netter med pinsetter

Hanne Østli Jakobsen, Øystein Leiknes, Thor A. Klevjer, Espen Strand, Nicholas Dupont

Kapitler og bøker

2013

The use of echosounders for long-term studies of the overwintering ecology of sprat (Sprattus sprattus)

Ingrid Solberg, Stein Kaartvedt, Thor A. Klevjer

Populærvitenskapelige artikler

2014

Distribution of Antarctic krill and apex predators at South Orkney Islands in 2014, and assessing escape mortality of krill in trawls

Bjørn Arne Krafft, Ludvig Ahm Krag, Thor A. Klevjer, Georg Skaret, Ronald Pedersen
Rapport fra havforskningen

Faglige foredrag

2018

From swarming behaviour to trophic interactions: forecasting dynamics of Antarctic krill in ecosystem hotspots using behaviour-based models

Klevjer, Thor A.
2016

Spatial distribution and biomass of Chaetognaths in the northeast Atlantic

Espen Strand, Thor A. Klevjer, Espen Bagøien, Webjørn Raunsgård Melle
2015

A North Atlantic basins comparison of diversity, abundance and vertical distribution of mesozooplankton in relation to hydrography and primary production

Espen Strand, Thor A. Klevjer, Tor Knutsen, Cabell S. Davis, Melissa Patrician, Webjørn Raunsgård Melle
2015

Zooplankton and micronekton vertical distribution and diel vertical migration behaviour in the Northern North Atlantic Ocean

Thor A. Klevjer, Eirik Norheim, Dag Lorents Aksnes, Espen Strand, Tor Knutsen, Webjørn Raunsgård Melle, Peter H. Wiebe
2014

Report from the annual survey of Antarctic krill and apex predators distribution at South Orkney Islands in 2014, and assessing escape mortality of krill in trawls

Bjørn Arne Krafft, Ludvig Ahm Krag, Thor A. Klevjer, Georg Skaret, Ronald Pedersen
2013

The use of echosounders for long-term studies of the overwintering ecology of sprat (Sprattus sprattus)

Ingrid Solberg, Stein Kaartvedt, Thor A. Klevjer

Rapporter og avhandlinger

2015

Using vessel acoustics to detect diving patterns of krill foraging predators automatically: development of a novel method for quantifying impact of krill fishing on seals and penguins

Thor A. Klevjer, Olav Rune Godø, Bjørn Arne Krafft
2015

Acoustic and catch data collected by the fleet – relevance for feedback management

Olav Rune Godø, Thor A. Klevjer, Georg Skaret
2013

Survey of the mesopelagic fish and environment in the Bay of Bengal

Reidar Toresen, Thor A. Klevjer, K. Arulananthan, Diana Zaera-Perez
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