Jens-Otto Krakstad
Arbeidsområde
Jens-Otto Krakstad er fiskeribiolog ved CDCF. Fra 2000-2002 arbeidet han som erstatnings forsker ved Namibia sitt forskningsinstitutt NatMIRC. I den perioden var han involvert i bestandsberegning av Namibisk hestemakrell. Dette innebar å forberede forvaltningsråd for Fiskeridepartementet i Namibia, opprettholde forbindelsene med representanter for industrien, samt on-the-job opplæring av andre forskere og teknikere.
I dag har han sitt viktigste arbeidsfelt innenfor EAF-Nansen-programmet, og spesielt på marine ressursene langs vestkysten av Afrika. Han har deltatt som toktleder på mer enn 30 tokt med ulike formål langs kysten av Afrika (akustisk, swept area, økosystem og eksperimentelle undersøkelser) om bord RV Dr. Fridtjof Nansen og andre fartøy. Krakstad har som en del av sitt arbeid hatt flere oppdrag for FAO, samt deltatt og vært ansvarlig for ulike tidligere BENEFIT og BCC prosjekter, og deltatt i EU prosjektet 'FADIO'. Han er også ansvarlig for det bilaterale samarbeidet mellom Mauritius og Norge om støtte til den Mauritiske fiskerisektoren og var ansvarlig for det tidligere bilaterale fiskeri samarbeidet mellom Nicaragua og Norge.
Curriculum Vitae
Jens-Otto E. Krakstad
Privat address:Stekervika 15, 5353 Straume
Work Experience
1. 01/2003-dd Senior Scientist at Centre for Development Cooperation in Fisheries, Institute of Marine Research
Experience:
Cruise leader on more than 30 cruises of various purposes along the coast of Africa onboard R.V. Dr. Fridtjof Nansen and other vessels.
Project leader for the bilateral fisheries cooperation between Sri Lanka and Norway
Project leader for the bilateral fisheries cooperation between Mauritius and Norway
Project leader for the former bilateral fisheries cooperation between Nicaragua and Norway
Consultancies for FAO on a number of projects
03/2000-12/2002 Replacement scientist at Ministry of Fisheries and Marine Resources. Swakopmund, Namibia, for Centre for Development Cooperation in Fisheries, IMR, Norway.
The work consisted mainly of assessment of the Namibian horse mackerel stock, involving extensive survey activities, using multi frequency acoustics, geo-statistical models and GIS tools. Participation in several national and international research programs with collaborators in SADC and Europe. Providing information to senior management at the Ministry of Fisheries and liaise with industry representatives, as well as on-the-job training of fellow scientists and technicians.
Publikasjoner
Vitenskapelige artikler (NVI)
2024
Climate change impacts on small pelagic fish distribution in Northwest Africa: trends, shifts, and risk for food security
Scientific Reports
14
2022
Asynchronized spawning responses of small pelagic fishes to a short-term environmental change
Marine Ecology Progress Series
696
p. 85-102
2022
Distribution and Abundance of the Blue Whale (Balaenoptera musculus indica) off Sri Lanka during the Southwest Monsoon 2018
Journal of Marine Science and Engineering
10
2021
Temporal variation of grouper diversity and distribution on the continental shelf of Sri Lanka: A revisit after four decades
Fisheries Research
242
2021
Regional variation in fish species on the continental shelf of Sri Lanka
Regional Studies in Marine Science
44
2021
Composition and diversity of larval fish in the Indian Ocean using morphological and molecular methods
Marine Biodiversity
51
p. 1-15
2020
Seasonal variations in the diversity and structure of decapod communities in the changing hydrological scenario of the northwest African upwelling
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.
Marine Biodiversity Records
12
2018
Summer distribution and demography of Antarctic krill Euphausia superba Dana, 1852 (Euphausiacea) at the South Orkney Islands, 2011–2015
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
Aquatic Living Resources
31
2017
Observations of the east Madagascar current system: Dynamics and volume transports
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
Fisheries Oceanography
24
p. 88-101
2014
Physical influence on biological production along the western shelf of Madagascar
Deep-Sea Research Part II: Topical Studies in Oceanography
100
p. 174-183
2013
New evidence for a South Atlantic stock of humpback whales wintering on the Northwest African continental shelf
African Zoology
48
p. 177-186
2013
Reproductive biology of horse mackerel Trachurus capensis and Trachurus trecae in Namibia and Angola
African Journal of Marine Science
35
p. 141-150
2011
Three species of Parthenina (Chrysallidinae, Pyramidellidoidea) New to West Africa
Journal of Conchology
40
p. 477-481
2011
Acoustic observations of dusky dolphins Lagenorhyncus obscurus hunting Cape horse mackerel Trachurus capensis off Namibia
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
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
South African Journal of Wildlife Research
37
Faglige foredrag
2018
Sea2Data - from acquisition to advice
2016
Sea2Data - from data acquisition to advice
2016
Recruitment studies in the coastal waters of Gabon, Republic of the Congo, and Angola in 2014 and 2016.
2014
Spatial dynamics of the bearded goby and its key fish predators off Namibia vary with climate and oxygen availability
2014
Spatial dynamics of the bearded goby and its key fish predators off Namibia varies with climate and oxygen availability
2013
A framework for data flow from observations to advice – the development of a new, efficient data infrastructure at IMR
2011
Remote environmental signals affect goby abundance on the hypoxic shelf of the northern Benguela: Anoxia tolerant fish thrive when oxygen levels decrease
2010
Sea2Data - Havforskingsinstituttets datainfrastrukturprosjekt for feltdata
Poster
2016
Pattern in distribution of the early life history stages of two mesopelagic species and the relative influence of different environmental variables
2014
Anchovy and sardinella spawning as a response to physical forcing: Egg and larvae distributions off Senegal, Gambia and Guinea-Bissau
2011
Fish in northern benguela: Anoxia tolerant bearded goby thrive in low oxygen waters
2004
Dusky dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey
2003
Why do dolphins jump?
2003
Xenobalanus globicipitis (Crustacea: Cirripedia) on Dusky Dolphin (Lagenorynchus obscurus) Off Namibia: Hitchhiker’s Guide to the Seas
2003
Why do dolphins jump?
2003
Dusky Dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey
2003
Xenobalanus globicipitis (Crustacea: Cirripedia) on dusky dolphin (Lagenorhynhus obscurus) off SW Africa: Hitchhiker's guide to the seas
Rapporter og avhandlinger
2020
Organic and inorganic contaminants in marine sediments off northern Mozambique
2016
Recruitment studies on Sardinella, Sardinella aurita and S. maderensis, in the coastal waters of Gabon and Republic of the Congo
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
2014
Recruitment studies on Sardinella aurita and S. maderensis in the coastal waters of Gabon, Congo and Northern Angola 24. May - 14. June 2014
2014
Cruise report Dr. Fridtjof Nansen Myanmar Ecosystem Survey 13. November - 17 December 2013
2013
Metadata Report on Cruises conducted with R/V Dr. Fridtjof Nansen 1993 - 2011
2012
Cruise report "Dr. Fridtjof Nensen, CCLME North West Africa Ecosystem Survey, Guinea-Morocco. 20 October-21 December 2011
2012
BCC Cruise Report: A Transboundary study of the pelagic fish stocks of Southern Angola and Northern Namibia, 22 September – 06 October 2012
2012
CCLME North West Africa Ecosystem Survey: Guinea - Morocco, 05 May – 22 July 2012
2010
Investigation of the Ophiuroid fauna of continental shelf areas in the Gulf of Guinea
2009
Investigation of crustaceans from shelf areas in the Gulf of Guinea with special emphasis on Brachyura
2009
Additions to the knowledge of Chrysallidinae and Turbonillidae (Mollusca, Gastropoda, Pyramidelloidea) in tropical West Africa
1999
Fødevalg til 0-gruppe trosk (Gadus morhua L.) ved overgangen fra pelagisk til bentisk levesett i forhold til årsklassestyrke og habitat
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