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Jens-Otto Krakstad

jens
Telephone: 99627060

Publications

Academic lectures

2016

Sea2Data - from data acquisition to advice

Sjur Ringheim Lid, Åge Fotland, Harald Gjøsæter, Espen Johnsen, Jens-Otto Krakstad, Helge Sagen, Thomas de Lange Wenneck, Nils Olav Handegard
2016

Recruitment studies in the coastal waters of Gabon, Republic of the Congo, and Angola in 2014 and 2016.

Jens-Otto Krakstad, Espen Bagøien
2014

Spatial dynamics of the bearded goby and its key fish predators off Namibia vary with climate and oxygen availability

Anne Gro Vea Salvanes, Chris H. Bartholomae, Dawit Yemane, Mark J. Gibbons, Paulus I. Kainge, Jens-Otto Krakstad, Mathieu Rouault, Arved Staby, Svein Sundby
2014

Spatial dynamics of the bearded goby and its key fish predators off Namibia varies with climate and oxygen availability

Svein Sundby, Anne Gro Vea Salvanes, Chris H. Bartholomae, Dawit Yemane, Mark J Gibbons, Paul Kainge, Jens-Otto Krakstad, Mathieu Rouault
2013

A framework for data flow from observations to advice – the development of a new, efficient data infrastructure at IMR

Nils Olav Handegard, Harald Gjøsæter, Geir Odd Johansen, Jens-Otto Krakstad, Sjur Ringheim-Lid, Helge Sagen, Trond Westgård, Geir Huse
2011

Remote environmental signals affect goby abundance on the hypoxic shelf of the northern Benguela: Anoxia tolerant fish thrive when oxygen levels decrease

Anne Gro Vea Salvanes, Chris H. Bartholomae, D.Y. Ghebrehiwet, M. Gibbons, Paulus I. Kainge, Jens-Otto Krakstad, M. Rouault, Arved Staby, Svein Sundby
2010

Sea2Data - Havforskingsinstituttets datainfrastrukturprosjekt for feltdata

Nils Olav Handegard, Harald Gjøsæter, Geir Odd Johansen, Jens-Otto Krakstad, Erlend Moksness, Helge Sagen, Jon Helge Vølstad, Trond Inge Westgaard

Posters

2016

Pattern in distribution of the early life history stages of two mesopelagic species and the relative influence of different environmental variables

Arved Staby, Erling Kåre Stenevik, Jens-Otto Krakstad, Dawit Yemane, Janet C. Coetzee
2014

Anchovy and sardinella spawning as a response to physical forcing: Egg and larvae distributions off Senegal, Gambia and Guinea-Bissau

Espen Bagøien, Erling Kåre Stenevik, Marek Ostrowski, Fambaye Ngom Sow, Tor Magne Ensrud, Jens-Otto Krakstad
2011

Fish in northern benguela: Anoxia tolerant bearded goby thrive in low oxygen waters

Anne Gro Vea Salvanes, Chris H. Bartholomae, D.Y. Gheebrehiwet, M. Gibbons, Paulus I. Kainge, Jens-Otto Krakstad, MJ Rouault, Arved Staby, Svein Sundby
2004

Dusky dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey

Jens-Otto Krakstad, Ann-Kristin Halvorsen, Leif Nøttestad, Otto Grahl-Nielsen
2003

Why do dolphins jump?

Leif Nøttestad, Bjørn Erik Eversvik Axelsen, Jens-Otto Krakstad, Bjørn Berland, Filomena Vaz-Velho, Graca Bauleth D'Almeida, Helge Nøttestad
2003

Xenobalanus globicipitis (Crustacea: Cirripedia) on Dusky Dolphin (Lagenorynchus obscurus) Off Namibia: Hitchhiker’s Guide to the Seas

Bjørn Berland, Jens-Otto Krakstad, Leif Nøttestad, Bjørn Erik Eversvik Axelsen
2003

Why do dolphins jump?

Leif Nøttestad, B. E. Axelsen, Jens-Otto Krakstad, B Berland, F. Vaz-Velho, G Bauleth-D'Almeida, H. Nøttestad
2003

Dusky Dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey

Jens-Otto Krakstad, Ann-Kristin Halvorsen, Leif Nøttesstad, Otto Grahl-Nielsen, J.P. Roux, Bjørn Erik Axelsen, G.B. Almeida, F. Vaz-Velho
2003

Xenobalanus globicipitis (Crustacea: Cirripedia) on dusky dolphin (Lagenorhynhus obscurus) off SW Africa: Hitchhiker's guide to the seas

Bjørn Berland, Jens-Otto Krakstad, Leif Nøttestad, Bjørn E. Axelsen, F. Vaz-Velho, G Bauleth-D'Almeida

Academic articles

2020

Seasonal variations in the diversity and structure of decapod communities in the changing hydrological scenario of the northwest African upwelling

Sidi M. Mohamed Moctar, Ana Ramos, Susana S. de Matos-Pita, Fran Ramil, Jens-Otto Krakstad
Marine Biodiversity 50 p. 1-18
2019

DNA barcoding confirms the first record of a Desmodema polystictum (Ogilby, 1898) egg and all-time high adult catches in the Indian Ocean.

M.I.G. Rathnasuriya, Alejandro Mateos-Rivera, A.G.G.C. Bandara, Rasmus Skern-Mauritzen, RP Prabath K Jayasinghe, Jens-Otto Krakstad, Padmini Dalpadado
Marine Biodiversity Records 12
2018

Summer distribution and demography of Antarctic krill Euphausia superba Dana, 1852 (Euphausiacea) at the South Orkney Islands, 2011–2015

Bjørn Arne Krafft, Ludvig Ahm Krag, Tor Knutsen, Georg Skaret, Knut Helge Jensen, Jens-Otto Krakstad, Stuart Larsen, Webjørn Raunsgård Melle, Svein Arnholt Iversen, Olav Rune Godø
Journal of Crustacean Biology 38 p. 682-688
2018

Spatial distribution of main clupeid species in relation to acoustic assessment surveys in the continental shelves of Senegal and the Gambia

Abdoulaye Sarre, Jens-Otto Krakstad, Patrice Brehmer, Ebou Mass Mbye
Aquatic Living Resources 31
2017

Observations of the east Madagascar current system: Dynamics and volume transports

Aksel Voldsund, Borja Aguiar-González, Tor Gammelsrød, Jens-Otto Krakstad, Jenny Ullgren
Journal of Marine Research 75 p. 531-555
2015

Spatial dynamics of the bearded goby and its key fish predators off Namibia vary with climate and oxygen availability

Anne Gro Vea Salvanes, Chris H. Bartholomae, Dawit Yemane, Mark J. Gibbons, Paul Kainge, Jens-Otto Krakstad, Mathieu Roault, Arved Staby, Svein Sundby
Fisheries Oceanography 24 p. 88-101
2014

Physical influence on biological production along the western shelf of Madagascar

Trond Pripp, Tor Gammelsrød, Jens-Otto Krakstad
Deep-Sea Research Part II: Topical Studies in Oceanography 100 p. 174-183
2013

Reproductive biology of horse mackerel Trachurus capensis and Trachurus trecae in Namibia and Angola

Hilkka Opolili Ndahafa Ndjaula, Jens-Otto Krakstad, Olav Sigurd Kjesbu
African Journal of Marine Science 35 p. 141-150
2011

Three species of Parthenina (Chrysallidinae, Pyramidellidoidea) New to West Africa

Frøydis Lygre, Christoffer Schander, Jon Anders Kongsrud, Jens-Otto Krakstad
Journal of Conchology 40 p. 477-481
2011

Acoustic observations of dusky dolphins Lagenorhyncus obscurus hunting Cape horse mackerel Trachurus capensis off Namibia

Matteo Bernasconi, Leif Nøttestad, Bjørn Erik E Axelsen, Jens-Otto Krakstad
Marine Ecology Progress Series 429 p. 209-218
2010

Dusky dolphins Lagenorhynchus obscurus and Cape fur seals Arctocephalus pusillus pusillus: fatty acid composition of their blubber and prey species

Otto Grahl-Nielsen, Jens-Otto Krakstad, Leif Nøttestad, Bjørn Erik Axelsen
South African Journal of Marine Science 32 p. 187-196
2007

Overlap in utilization of juvenile Cape horse mackerel by Cape fur seals and the purse-seine fishery in Namibia

S Mecenero, LG Underhill, Jens-Otto Krakstad, SP Kirkman, JP Roux
South African Journal of Wildlife Research 37

Reports and papers

2020

Organic and inorganic contaminants in marine sediments off northern Mozambique

Stepan Boitsov, Brent Newman, Herminio Muiambo, Bernardino Malawene, Eutilerio Chauque, Emidio Andre, Jens-Otto Krakstad, Deborah Catena, Kjell Gunnar Bakkeplass, Henriques Bustani, Marcia Nrepo, Aurora Sousa, Serafin Matusse, Tor Magne Ensrud, Bjørn Serigstad
2016

Recruitment studies on Sardinella, Sardinella aurita and S. maderensis, in the coastal waters of Gabon and Republic of the Congo

Jens-Otto Krakstad, Øystein Skagseth, Espen Bagøien, Tor Magne Ensrud, Jan de Dieu Lewembe, Jean Samba, Domingas Nsaku
2016

Recruitment studies on Sardinella, Sardinella aurita and Sardinella maderensis, in the coastal waters of Gabon and Republic of the Congo. 24 May - 14 June 2016

Jens-Otto Krakstad, Øystein Skagseth, Espen Bagøien, Tor Magne Ensrud, Jan de Dieu Lewembe, Jean Samba, Domingas Nsaku
2014

Recruitment studies on Sardinella aurita and S. maderensis in the coastal waters of Gabon, Congo and Northern Angola 24. May - 14. June 2014

Jens-Otto Krakstad, Espen Bagøien, Tor Magne Ensrud, Jean de Dieu Lewmbe, Jean Samba, Antonio Miguel Andre
2014

Cruise report Dr. Fridtjof Nansen Myanmar Ecosystem Survey 13. November - 17 December 2013

Jens-Otto Krakstad, Kathrine Michalsen, Bjørn Arne Krafft, Espen Bagøien, Oddgeir Berg Alvheim, Tore Strømme
2013

Metadata Report on Cruises conducted with R/V Dr. Fridtjof Nansen 1993 - 2011

Ines Dias Bernardes, Jens-Otto Krakstad, Oddgeir Berg Alvheim, Hans Erstad
2012

Cruise report "Dr. Fridtjof Nensen, CCLME North West Africa Ecosystem Survey, Guinea-Morocco. 20 October-21 December 2011

Jens-Otto Krakstad, Kathrine Michalsen, Oddgeir Berg Alvheim, diana zaera, Espen Bagøien, Bjørn Arne Krafft, Eva García-Isarch, f ramil, k van waerebeek
2012

BCC Cruise Report: A Transboundary study of the pelagic fish stocks of Southern Angola and Northern Namibia, 22 September – 06 October 2012

Jens-Otto Krakstad, Aristóteles Amaro, Vaino Shigwedha
2012

CCLME North West Africa Ecosystem Survey: Guinea - Morocco, 05 May – 22 July 2012

Jens-Otto Krakstad, Kathrine Michalsen, Åge Sigurd Høines, Oddgeir Berg Alvheim, Diana Zaera-Perez, Magne Olsen, Ines Dias Bernardes, Espen Bagøien, Bjørn Arne Krafft, Ana Ramos, Eva García-Isarch, Eli Muñoz, Fran Ramil, Paul Robinson
2010

Investigation of the Ophiuroid fauna of continental shelf areas in the Gulf of Guinea

Øydis Alme, Christoffer Schander, Jon Anders Kongsrud, Jens-Otto Krakstad
2009

Investigation of crustaceans from shelf areas in the Gulf of Guinea with special emphasis on Brachyura

Cathrine Stabel Henriksen, Christoffer Schander, Jon Anders Kongsrud, Jens-Otto Krakstad
2009

Additions to the knowledge of Chrysallidinae and Turbonillidae (Mollusca, Gastropoda, Pyramidelloidea) in tropical West Africa

Frøydis Lygre, Christoffer Schander, Jon Anders Kongsrud, Jens-Otto Krakstad
1999

Fødevalg til 0-gruppe trosk (Gadus morhua L.) ved overgangen fra pelagisk til bentisk levesett i forhold til årsklassestyrke og habitat

Krakstad, Jens-Otto

Chapters and books

2014

Growth and Mortality in Settled Atlantic Cod in Relation to Diet—Evidence for a Recruitment Mechanism

Tore Johannessen, Ingrid Synnøve Berthinussen, Jens-Otto Krakstad, Anders Fernø
p. 63-94
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