Kjell Tormod Nilssen
Publications
Academic articles
2023
Temporal and Spatial Distribution of Harbor Seal (Phoca vitulina) Risk of Entanglement in Gillnets Along the Norwegian Coast
Aquatic Mammals
49
p. 508-518
2022
PUP PRODUCTION OF HARP SEALS IN THE NORTHWEST ATLANTIC IN 2017 DURING A TIME OF ECOSYSTEM CHANGE
NAMMCO scientific publications
12
2022
Marine mammal hotspots across the circumpolar Arctic
Diversity and Distributions: A journal of biological invasions and biodiversity
28
p. 2729-2753
2022
Recent Harp and Hooded Seal Pup Production Estimates in the Greenland Sea Suggest Ecology-Driven Declines
NAMMCO scientific publications
12
2020
Harp seal body condition and trophic interactions with prey in Norwegian high Arctic waters in early autumn
Progress in Oceanography
191
2020
Diet composition and biomass consumption of harbour seals in Telemark and Aust-Agder, Norwegian Skagerrak
Marine Biology Research
16
p. 299-310
2019
Diet and prey consumption of grey seals (Halichoerus grypus) in Norway
Marine Biology Research
15
p. 137-149
2018
Effects of the invasive red king crab on food web structure and ecosystem properties in an Atlantic fjord
Marine Ecology Progress Series
596
p. 13-31
2017
Trophic level and fatty acids in harp seals compared with common minke whales in the Barents Sea
Marine Biology Research
13
p. 919-932
2017
Selection and foraging response of harbour seals in an area of changing prey resources
Marine Ecology Progress Series
581
p. 199-214
2017
Recent summer diet of hooded Cystophora cristata and harp Pagophilus groenlandicus seals in the drift ice of the Greenland Sea.
Polar Biology
40
p. 931-937
2017
Recent summer diet of hooded Cystophora cristata and harp Pagophilus groenlandicus seals in the drift ice of the Greenland Sea
Pol. Biol. 2017, 40:931-937
40
p. 931-937
2015
The intensity of horizontal and vertical search in a diving forager: the harbour seal
Movement Ecology
3
p. 1-16
2014
Improving time budget estimates through the behavioural interpretation of dive bouts in harbour seals
Animal Behaviour
94
p. 117-134
2014
Current status of hooded seals in the Greenland Sea. Victims of climate change and predation?
Biological Conservation
172
p. 29-36
2014
From pup production to quotas: Current status of harp seals in the Greenland Sea
ICES Journal of Marine Science
71
p. 537-545
2013
Functional relationship between harp seal body condition and available prey in the Barents Sea
Marine Ecology Progress Series
484
p. 287-+
2013
Harp seal foraging behaviour during summer around Svalbard in the northern Barents Sea: diet composition and the selection of prey
Polar Biology
36
p. 305-320
2012
Modelling the abundance of grey seals (Halichoerus grypus) along the Norwegian coast
ICES Journal of Marine Science
69
p. 1436-1447
2011
Fatty acids in harp seal blubber do not necessarily reflect their diet
Marine Ecology Progress Series
426
p. 263-276
2010
Estimation of Pup Production of Hooded and Harp Seals in the Greenland Sea in 2007: Reducing Uncertainty Using Generalized Additive Models
Journal of Northwest Atlantic Fishery Science
42
p. 103-123
2010
Haulout behaviour of harbour seals (Phoca vitulina) during breeding and moult in vesterålen, Norway
NAMMCO scientific publications
8
p. 302-312
2010
Status of harbour seals (Phoca vitulina) in mainland Norway
NAMMCO scientific publications
8
p. 61-70
2009
Estimation of seal pup production from aerial surveys using generalized additive models.
Can. J. of Fish. Aquat. Sci.
66
p. 847-858
2009
Transfer of lipids from plankton to blubber of harp and hooded seals off East Greenland
Deep-Sea Research Part II: Topical Studies in Oceanography
56
p. 2080-2086
2008
Estimation of hooded seal (Cystophora cristata) pup production in the Greenland Sea pack ice during the 2005 whelping season
Polar Biology
31
p. 867-878
2007
Diets of hooded seals (Cystophora cristata) in coastal waters and drift ice waters along the east coast of Greenland
Marine Biology Research
3
p. 123-133
2007
Relative abundance and size composition of prey in the common minke whale diet in selected areas of the northeast Atlantic during 2000-04
Journal of Cetacean Research and Management
9
p. 167-178
2007
Status of grey seals (Halichoerus grypus) in Norwegian waters
NAMMCO scientific publications
6
p. 23-31
2007
Recoveries of grey seals (Halichoerus grypus) tagged on the Murman coast in Russia
NAMMCO scientific publications
6
p. 197-201
2006
Estimation of harp seal (pagophilus groenlandicus) pup production in the North Atlantic completed: Results from surveys in the Greenland Sea in 2002
ICES Journal of Marine Science
63
p. 95-104
2005
Digestion of capelin, Mallotus villosus (Muller), herring, Clupea harengus L., and polar cod, Boreogadus saida (Lepechin), otoliths in a simulated seal stomach
ICES Journal of Marine Science
62
2005
Digestion of capelin, Mallotus villosus (Müller), herring, Clupea harengus L., and polar cod, Boreogadus saida (Lepechin) otoliths in a simulated seal stomach
ICES Journal of Marine Science
62
p. 86-92
2004
Lipids and trophic linkages in harp seal (Phoca groenlandica) from the eastern Barents Sea
Polar Research
23
p. 43-50
2004
Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winter
Polar Research
23
p. 35-42
2004
The gastric properties of free-ranging harp (Pagophilus groenlandicus (Erxleben, 1777)) and hooded (Cystophora cristata (Erxleben, 1777)) seals
ICES Journal of Marine Science
61
p. 287-292
2002
Summer diet of grey seals (Halichoerus grypus) in Faroese waters
Sarsia
87
p. 462-471
2002
Harbour seal (Phoca vitulina) diet in Vesterålen, North Norway
Sarsia
87
p. 451-461
2002
Variations in minke whale Balaenoptera acutorostrata diets in response to environmental changes in the Barents Sea
Sarsia
87
p. 409-422
2001
Diet of weaned pups and seasonal variation in body condition of juvenile Barents Sea harp seals Phoca groenlandica
Marine mammal science
17
p. 926-936
2000
Food consumption estimates of Barents Sea harp seals
NAMMCO scientific publications
2
p. 9-27
2000
Estimated food consumption of minke whales Balaenoptera acutorostrata in northeast Atlantic waters in 1992-1995
NAMMCO scientific publications
2
p. 65-80
2000
First independent feeding of harp seal (Phoca groenlandica) and hooded seal (Cystophora cristata) pups in the Greenland Sea
NAMMCO scientific publications
2
p. 29-39
2000
Feeding habits of harp Phoca groenlandica and hooded seals Cystophora cristata during late winter, spring and early summer in the Greenland Sea
NAMMCO scientific publications
2
p. 40-49
1998
Invasions of harp seals Phoca groenlandica Erxleben to coastal waters of Norway in 1995: ecological and demographic implications
Sarsia
83
p. 337-345
1998
Do harp seals Phoca groenlandica exhibit particular prey preferences?
ICES Journal of Marine Science
55
p. 941-953
1997
Diet studies based on contents from two separate stomach compartments of northeast Atlantic minke whales Balaenoptera acutorostrata
Sarsia
82
p. 63-68
1997
Seasonal variation in body condition of adult Barents Sea harp seals (Phoca groenlandica)
Journal of Northwest Atlantic Fishery Science
22
p. 17-25
1997
On the variation in size and composition of minke whale Balaenoptera acutorostrata forestomach contents
Journal of Northwest Atlantic Fishery Science
22
p. 105-114
1997
Do Minke Whales (Balaenoptera acutorostrara) Exhibit Particular Prey Preferences?
Journal of Northwest Atlantic Fishery Science
22
p. 91-104
1996
Diet and food availability for northeast Atlantic minke whales Balaenoptera acutorostrata
Rep. int. Whal. Commn.
46
p. 371-382
1996
Gross anatomy of the gastrointestinal system of harp seals (Phoca groenlandica)
J. Zool., Lond.
238
p. 581-589
1995
Diets and food availability for northeast Atlantic minke whales Balaenoptera acutorostrata during summer in 1992.
ICES Journal of Marine Science
52
p. 77-86
1995
Food habits of harp seals Phoca groenlandica during lactation and moult in March-May in the Southern Barents Sea and White Sea.
ICES Journal of Marine Science
52
p. 33-41
1995
Food habits of harp seals (Phoca groenlandica) during early summer and autumn in the northern Barents Sea.
Polar Biology
15
p. 485-493
1995
Observations of walrus (Odobenus rosmarus rosmarus) in the southeastern Barents and Pechora Seas in February 1993.
Polar Research
14
p. 83-86
1995
Food habits of harp seals (Phoca groenlandica) during early summer and autumn in the northern Barents Sea
Polar Biol.
15
p. 485-493
1995
Ecological implications of harp seal Phoca groenlandica invasions in Northern Norway
in: Blix, A.S., Walløe, L. & Ulltang, Ø. (eds). Whales, seals, fish and man. Elsevier Science B.V.
p. 545-556
1995
Food habits of harp seals Phoca groenlandica during lactation and moult in March-May in the Southern Barents Sea and White Sea
ICES J. mar. Sci.
52
p. 33-41
1995
Seasonal distribution, condition and feeding habits of Barents Sea harp seals
in Blix, A.S., Walløe, L. & Ulltang, Ø. (eds) Whales, seals, fish and man. Elsevier Science B.V.
p. 241-254
1995
Observations of walrus (Odobenus rosmarus rosmarus) in the southeastern Barents and Pechora Seas in February 1993. Polar Res.
Polar Res.
14
p. 83-86
1995
Diets and food availability for northeast Atlantic minke whales Balaenoptera acutorostrata during summer in 1992.
ICES J. mar. Sci.
52
p. 77-86
1994
The status of grey seals Halichoerus grypus in north Norway and on the Murman coast, Russia.
Biological Conservation
70
p. 59-67
1994
Seasonal distribution of harp seals Phoca groenlandica in the Barents Sea.
Polar Research
13
p. 163-172
1994
Seasonal distribution of Barents Sea harp seals (Phoca groenlandica).
Polar Research
13
p. 163-172
1994
The status of grey seals Halichoerus grypus in North Norway and on the Murman coast, Russia.
Biol. Cons.
70
p. 59-67
1992
The effect of invading harp seals (Phoca groenlandica) on local fish stocks in North Norway.
Fisheries Research
13
p. 25-37
1992
The effect of invading harp seals (Phoca groenlandica) on local coastal fish stocks of North Norway.
Fish Res.
13
p. 25-37
1991
Harp seal (Phoca groenlandica) invasions in Norwegian coastal waters: age composition and feeding habits.
ICES Journal of Marine Science
48
p. 363-371
1991
Harp seal (Phoca groenlandica) invasions in Norwegian coastal waters: age composition and feeding habits.
ICES J. mar. Sci.
48
p. 363-371
Other journal contributions
2013
Slankere sel i Barentshavet
Forskning.no
Scientific lectures
2016
Diet and prey consumption of grey seals (Halichoerus grypus) in Norwegian waters.
2015
Kystøkosystemet
2015
The response of harbour seals to seasonal dynamics in prey availability in a subarctic fjord in Northern Norway.
2009
Feeding behaviour and habitat use of harbour seals (Phoca vitulina) in the Vesterålen archipelago, Norway
Poster
2022
Automatic detection of seal pups on ice from aerial images
2017
Semi-automatic detection of ice breeding seal pups in aerial images using deep learning techniques
2013
Identifying periods of ‘resting’ at sea helps making sense of harbour seals’ foraging signature in movement data
2013
Ecopath modelling of ecosystem structure of a subarctic norwegian fjord after a decline in the coastal cod (Gadus morhua) stock
2010
Greenland Sea hooded seals – victims of climate change?
Reports and dissertations
2022
Report From Surveys To Assess Harp And Hooded Seal Pup Production In The Greenland Sea Pack-Ice In 2022
2021
Forskerutvalg om sjøpattedyr 2021 - Råd om forskning og forvaltning
2021
Forskerutvalg om sjøpattedyr 2020 - Tilrådning om forskning og forvaltning
2020
Potensielle effekter av havvindanlegg på havmiljøet
2020
Potensielle effekter av havvindanlegg på havmiljøet
2020
Forskerutvalg om sjøpattedyr 2019 - Anbefalinger om forskning og forvaltning
2008
Marinøkologiske ringvirkninger av vindmølleparker til havs
2007
Marinøkologiske effekter av vindmøller i sjøen
2002
Registrering av havertunger i Nord-Trøndelag, Nordland og Finnmark i oktober-november 2001
2002
Report from aerial surveys of ice breeding seals in the Greenland Sea pack-ice during the 2002 whelping season
1993
Studies of minke whale Balaenoptera acutorostrata ecology in the Northeast Atlantic: Preliminary results from studies of diet and food availability during summer 1992
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