Blar i Publikasjoner fra CRIStin på forfatter "Gjøsæter, Harald"
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High Latitude Epipelagic and mesopelagic scattering layers-a reference for future Arctic ecosystem change
Knutsen, Tor; Wiebe, Peter H.; Gjøsæter, Harald; Ingvaldsen, Randi Brunvær; Lien, Gunnar (Peer reviewed; Journal article, 2017) -
Innspill til høring - Forslag til program for konsekvensutredning for mineralvirksomhet på norsk sokkel
van der Meeren, Terje; Mork, Kjell Arne; Kutti, Tina; Knutsen, Tor; Bagøien, Espen; Frie, Anne Kirstine Højholt; Gjøsæter, Harald; Bienfait, André Marcel; Storesund, Julia Endresen; Dunlop, Katherine Mary; Windsland, Kristin; Hallfredsson, Elvar H.; Helle, Kristin; Höffle, Hannes; Junge, Claudia; Serigstad, Bjørn; Chierici, Melissa (Rapport fra havforskningen;2021 - 23, Research report, 2021)Rapporten er et høringssvar sendt til Olje- og Energidepartementet i forbindelse med et forslag til konsekvensutredningsprogram for mineralvirksomhet på norsk kontinentalsokkel. I høringssvaret påpeker Havforskningsinstituttet ... -
Key processes regulating the early life history of Barents Sea polar cod
Gjøsæter, Harald; Huserbråten, Mats Brockstedt Olsen; Vikebø, Frode Bendiksen; Eriksen, Elena (Peer reviewed; Journal article, 2020)The polar cod (Boreogadus saida) in the Barents Sea is one of the main stocks of this species in the Arctic, reaching a total biomass of almost 2 million tonnes in some years. It has been fluctuating considerably in ... -
Norwegian fisheries in the Svalbard zone since 1980. Regulations, profitability and warming waters affect landings
Misund, Ole Arve; Heggland, Kristin; Skogseth, Ragnheid; Falck, Eva; Gjøsæter, Harald; Sundet, Jan Henry; Watne, Jens; Lønne, Ole Jørgen (Journal article; Peer reviewed, 2016-02-02)The Svalbard archipelago in the High Arctic is influenced by cold Arctic water masses from the north-east and the warm West Spitsbergen Current flowing northwards along its western coast. The eastern waters and the fjords ... -
Pelagiske økosystem i De nordiske hav - grunnlagsstudie knyttet til åpningsprosess for utforskning og utvinning av havbunnsmineraler på norsk kontinentalsokkel
Kutti, Tina; Mork, Kjell Arne; Chierici, Melissa; Børsheim, Knut Yngve; Bagøien, Espen; Knutsen, Tor; Broms, Cecilie; Klevjer, Thor A.; Strand, Espen; Gjøsæter, Harald; Stenevik, Erling Kåre; Høines, Åge Sigurd; Windsland, Kristin; Frie, Anne Kirstine Højholt (Rapport fra havforskningen;2021 - 41, Research report, 2021)Denne rapporten er en leveranse til bestillingen «Grunnlagsstudie: Pelagisk økosystem» fra Oljedirektoratet til Havforskningsinstituttet. Studien er bestilt i forbindelse med at regjeringen har igangsatt en prosess for ... -
Polar cod egg and larval drift patterns in the Svalbard archipelago
Eriksen, Elena; Huserbråten, Mats Brockstedt Olsen; Gjøsæter, Harald; Vikebø, Frode Bendiksen; Albretsen, Jon (Journal article; Peer reviewed, 2019)Spawning of polar cod (Boreogadus saida) in the vicinity of the Svalbard archipelago has not been directly observed. From the distribution pattern of polar cod 0-group observed during annual monitoring of the Barents Sea, ... -
Polar cod in jeopardy under the retreating Arctic sea ice
Huserbråten, Mats Brockstedt Olsen; Eriksen, Elena; Gjøsæter, Harald; Vikebø, Frode Bendiksen (Journal article; Peer reviewed, 2019)The Arctic amplification of global warming is causing the Arctic-Atlantic ice edge to retreat at unprecedented rates. Here we show how variability and change in sea ice cover in the Barents Sea, the largest shelf sea of ... -
Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock
Gjøsæter, Harald; Hallfredsson, Elvar H.; Mikkelsen, Nina; Bogstad, Bjarte; Pedersen, Torstein (Journal article; Peer reviewed, 2015-10-11)Year-class strength of Barents Sea capelin has been monitored closely since the early 1970s and during this ∼45 years period three short periods of almost total recruitment failure leading to three stock collapses have ... -
Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf
Menze, Sebastian; Ingvaldsen, Randi Brunvær; Nikolopoulos, Anna; Hattermann, Tore; Albretsen, Jon; Gjøsæter, Harald (Peer reviewed; Journal article, 2020)Atlantic Water (AW) flowing along the western and northern Svalbard shelf-break extends the Atlantic domain into the Arctic and is the region’s major source of heat, nutrients and advected plankton. We investigated the ... -
Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017)
Skjoldal, Hein Rune; Eriksen, Elena; Gjøsæter, Harald; Skagseth, Øystein; Prozorkevich, Dmitry A.; Lien, Vidar Surén (Peer reviewed; Journal article, 2022)Young-of-the-year (0-group) fish in the Barents Sea have been investigated in an annual joint Norwegian-Russian pelagic trawl survey in autumn, using a standardized procedure since 1980. We use a conceptual framework of ... -
Reference point based management of Norwegian Atlantic salmon populations
Forseth, Torbjørn; Fiske, Peder; Barlaup, Bjørn Torgeir; Gjøsæter, Harald; Hindar, Kjetil; Diserud, Ola Håvard (Peer reviewed; Journal article, 2013)While management according to biological reference points is well established for many commercial marine fisheries, similar systems for more leisure based fisheries for freshwater fishes are less common. This paper describes ... -
Sea ice, temperature, and prey effects on annual variations in mean lengths of a key Arctic fish, Boreogadus saida, in the Barents Sea
Dupont, Nicolas; Durant, Joel Marcel; Langangen, Øystein; Gjøsæter, Harald; Stige, Leif Christian (Peer reviewed; Journal article, 2020)Oceanographic conditions in the Arctic are changing, with sea ice cover decreasing and sea temperatures increasing. Our understanding of the effects on marine populations in the area is, however, limited. Here, we focus ... -
Size-fractioned zooplankton biomass in the Barents Sea: Spatial patterns and temporal variations during three decades of warming and strong fluctuations of the capelin stock (1989–2020)
Skjoldal, Hein Rune; Eriksen, Elena; Gjøsæter, Harald (Peer reviewed; Journal article, 2022)Zooplankton biomass has been monitored on joint Norwegian-Russian surveys in late summer and autumn since the 1980s. We report here on zooplankton biomass in three size fractions (<1, 1–2, and > 2 mm in screen mesh opening) ... -
Spatial and temporal changes in the Barents Sea pelagic compartment during the recent warming
Eriksen, Elena; Skjoldal, Hein Rune; Gjøsæter, Harald; Primicerio, Raul (Peer reviewed; Journal article, 2017) -
Study of the Arctic mesopelagic layer with vessel and profiling multifrequency acoustics
Dias Bernardes, Inês; Ona, Egil; Gjøsæter, Harald (Peer reviewed; Journal article, 2020) -
The circumpolar impacts of climate change and anthropogenic stressors on Arctic cod (Boreogadus saida) and its ecosystem
Geoffroy, Maxime; Bouchard, Caroline; Flores, Hauke; Robert, Dominique; Gjøsæter, Harald; Hoover, Carie; Hop, Haakon; Hussey, Nigel E.; Nahrgang, Jasmine; Steiner, Nadja; Bender, Morgan; Berge, Jørgen; Castellani, Giulina; Chernova, Natalia; Copeman, Louise; David, Carmen; Deary, Alison; Divoky, George; Dolgov, Andrey; Duffy-Anderson, Janet; Dupont, Nicolas; Durant, Joël M.; Elliott, Kyle; Gauthier, Stéphane; Goldstein, Esther D.; Rolf, Gradinger; Hedges, Kevin; Herbig, Jennifer; Laurel, Ben; Loseto, Lisa; Maes, Sarah; Mark, Felix; Mosbech, Anders; Pedro, Sara; Petitt-Wade, Harri; Prokopchuk, Irina; Paul E, Renaud; Schembri, Sarah; Vestfals, Cathleen; Walkusz, Wojciech (Peer reviewed; Journal article, 2023)Arctic cod biomass are predicted. In most Arctic seas, the relative abundance of Arctic cod within the fish community will likely fluctuate in accordance with cold and warm periods. A reduced abundance of Arctic cod will ... -
The circumpolar impacts of climate change and anthropogenic stressors on Arctic cod (Boreogadus saida) and its ecosystem
Geoffroy, Maxime; Bouchard, Caroline; Flores, Hauke; Robert, Dominique; Gjøsæter, Harald; Hoover, Carie; Hop, Haakon; Hussey, Nigel E.; Nahrgang, Jasmine; Steiner, Nadja; Bender, Morgan; Berge, Jørgen; Castellani, Giulina; Chernova, Natalia; Copeman, Louise; David, Carmen; Deary, Alison; Divoky, George; Dolgov, Andrey; Duffy-Anderson, Janet; Dupont, Nicolas; Durant, Joël; Elliott, Kyle; Gauthier, Stéphane; Goldstein, Esther D.; Gradinger, Rolf Rudolf; Hedges, Kevin; Herbig, Jennifer; Laurel, Ben; Loseto, Lisa; Maes, Sarah; Mark, Felix; Mosbech, Anders; Pedro, Sara; Petitt-Wade, Harri; Prokopchuk, Irina; Paul E, Renaud; Schembri, Sarah; Vestfals, Cathleen; Walkusz, Wojciech (Peer reviewed; Journal article, 2023)Arctic cod biomass are predicted. In most Arctic seas, the relative abundance of Arctic cod within the fish community will likely fluctuate in accordance with cold and warm periods. A reduced abundance of Arctic cod will ... -
The major threats to Atlantic salmon in Norway
Forseth, Torbjørn; Barlaup, Bjørn Torgeir; Finstad, Bengt; Fiske, Peder; Gjøsæter, Harald; Falkegård, Morten; Hindar, Atle; Mo, Tor Atle; Rikardsen, Audun H.; Thorstad, Eva Bonsak; Vøllestad, Leif Asbjørn; Wennevik, Vidar (Peer reviewed; Journal article, 2017)Atlantic salmon (Salmo salar) is an economically and culturally important species. Norway has more than 400 watercourses with Atlantic salmon and supports a large proportion of the world’s wild Atlantic salmon. Atlantic ... -
Tradeoffs of managing cod as a sustainable resource in fluctuating environments
Goto, Daisuke; Filin, Anatoly A.; Howell, Daniel; Bogstad, Bjarte; Kovalev, Yuri A.; Gjøsæter, Harald (Peer reviewed; Journal article, 2021)Sustainable human exploitation of living marine resources stems from a delicate balance between yield stability and population persistence to achieve socioeconomic and conservation goals. But our imperfect knowledge of how ... -
Under-ice observations by trawls and multi-frequency acoustics in the Central Arctic Ocean reveals abundance and composition of pelagic fauna
Ingvaldsen, Randi Brunvær; Eriksen, Elena; Gjøsæter, Harald; Engås, Arill; Schuppe, Birte Katarina; Assmann, Karen; Cannaby, Heather Anne; Dalpadado, Padmini; Bluhm, Bodil (Peer reviewed; Journal article, 2023)The rapid ongoing changes in the Central Arctic Ocean call for baseline information on the pelagic fauna. However, sampling for motile organisms which easily escape vertically towed nets is challenging. Here, we report the ...