Browsing Publikasjoner fra CRIStin by Author "Bogstad, Bjarte"
Now showing items 21-40 of 52
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Fish Investigations in the Barents Sea Winter 2019
Mehl, Sigbjørn; Wenneck, Thomas de Lange; Aglen, Asgeir; Fuglebakk, Edvin; Gjøsæter, Harald; Godiksen, Jane Aanestad; Seim, Silje Elisabeth; Staby, Arved; Bogstad, Bjarte; Russkikh, Alexey A.; Fomin, Konstantin (IMR/PINRO Joint Report Series;, Research report, 2019)The Institute of Marine Research (IMR), Bergen, has performed acoustic measurements of demersal fish in the Barents Sea since 1976. Since 1981 a bottom trawl survey has been combined with the acoustic survey. Typical effort ... -
Fish investigations in the Barents Sea winter 2020
Fall, Johanna Jennifer Elisabeth; Wenneck, Thomas de Lange; Bogstad, Bjarte; Fuglebakk, Edvin; Gjøsæter, Harald; Seim, Silje Elisabeth; Skage, Malin Lie; Staby, Arved; Tranang, Caroline Aas; Windsland, Kristin; Russkikh, Alexey A.; Fomin, Konstantin (IMR/PINRO Joint Report Series;, Research report, 2020)This report presents the main results from the surveys in January-March 2020. The surveys were performed with the Norwegian research vessels “Helmer Hanssen” and “Johan Hjort” and the Russian research vessel “Vilnyus”. ... -
Fish investigations in the Barents Sea winter 2021 : IMR/PINRO Joint Report Series nr. 1 2022
Fall, Johanna Jennifer Elisabeth; Wenneck, Thomas de Lange; Bogstad, Bjarte; Fuglebakk, Edvin; Godiksen, Jane Aanestad; Korsbrekke, Knut; Seim, Silje Elisabeth; Skage, Malin Lie; Staby, Arved; Tranang, Caroline Aas; Windsland, Kristin; Russkikh, Alexey A.; Fomin, Konstantin (IMR/PINRO Joint Report Series;, Research report, 2022)This report presents the main results from the surveys in January-March 2021. The surveys were performed with the Norwegian research vessels “Helmer Hanssen”, “Kronprins Haakon” and “Johan Hjort”, and the Russian research ... -
Fish investigations in the Barents Sea Winter 2022
Fall, Johanna Jennifer Elisabeth; Wenneck, Thomas de Lange; Bogstad, Bjarte; Fuglebakk, Edvin; Godiksen, Jane Aanestad; Høines, Åge Sigurd; Korsbrekke, Knut; Skage, Malin Lie; Staby, Arved; Tranang, Caroline Aas; Windsland, Kristin; Russkikh, Alexey A.; Kharlin, Sergey (IMR/PINRO Joint Report Series;2023 - 1, Research report, 2023)Annual catch quotas and other regulations of the Barents Sea fisheries are set through negotiations between Norway and Russia. Assessment of the state of the stocks and quota advice are based on survey results and international ... -
Fish investigations in the Barents Sea Winter 2023
Fall, Johanna Jennifer Elisabeth; Wenneck, Thomas de Lange; Bogstad, Bjarte; Eidset, Elise; Fuglebakk, Edvin; Godiksen, Jane Aanestad; Høines, Åge Sigurd; Johannesen, Edda; Midtun, Halvard Aas; Moksness, Ine; Skage, Malin Lie; Skaret, Georg; Staby, Arved; Tranang, Caroline Aas; Windsland, Kristin; Russkikh, Alexey A.; Kharlin, Sergey (IMR/PINRO Joint Report Series;2024 - 1, Research report, 2024)Preface Annual catch quotas and other regulations of the Barents Sea fisheries are set through negotiations between Norway and Russia. Assessment of the state of the stocks and quota advice are given by the International ... -
Growth portfolios buffer climate-linked environmental change in marine systems
Campana, Steven E.; Smolinski, Szymon; Black, Bryan A.; Morrongiello, John R.; Alexandroff, Stella J.; Andersson, Carin; Bogstad, Bjarte; Butler, Paul G.; Denechaud, Côme; Frank, David C.; Geffen, Audrey J.; Godiksen, Jane Aanestad; Grønkjær, Peter; Hjörleifsson, Einar; Jónsdóttir, Ingibjörg G.; Meekan, Mark; Mette, Madelyn; Tanner, Susanne E.; van der Sleen, Peter; von Leesen, Gotje (Peer reviewed; Journal article, 2022)Large-scale, climate-induced synchrony in the productivity of fish populations is becoming more pronounced in the world's oceans. As synchrony increases, a population's “portfolio” of responses can be diminished, in turn ... -
Growth portfolios buffer climate-linked environmental change in marine systems
Campana, Steven E.; Smolinski, Szymon; Black, Bryan A.; Morrongiello, John R.; Alexandroff, Stella J.; Andersson, Carin; Bogstad, Bjarte; Butler, Paul G.; Denechaud, Côme; Frank, David C.; Geffen, Audrey J.; Godiksen, Jane Aanestad; Grønkjær, Peter; Hjörleifsson, Einar; Jónsdóttir, Ingibjörg G.; Meekan, Mark; Mette, Madelyn; Tanner, Susanne E.; van der Sleen, Peter; von Leesen, Gotje (Peer reviewed; Journal article, 2022)Large-scale, climate-induced synchrony in the productivity of fish populations is becoming more pronounced in the world's oceans. As synchrony increases, a population's “portfolio” of responses can be diminished, in turn ... -
Highly mixed impacts of near-future climate change on stock productivity proxies in the North East Atlantic
Kjesbu, Olav Sigurd; Sundby, Svein; Sandø, Anne Britt; Alix, Maud; Hjøllo, Solfrid Sætre; Tiedemann, Maik; Skern-Mauritzen, Mette; Junge, Claudia; Fossheim, Maria; Broms, Cecilie; Søvik, Guldborg; Zimmermann, Fabian; Nedreaas, Kjell Harald; Eriksen, Elena; Höffle, Hannes; Hjelset, Ann Merete; Kvamme, Cecilie; Reecht, Yves; Knutsen, Halvor; Aglen, Asgeir; Albert, Ole Thomas; Berg, Erik; Bogstad, Bjarte; Durif, Caroline; Halvorsen, Kim Aleksander Tallaksen; Høines, Åge Sigurd; Hvingel, Carsten; Johannesen, Edda; Johnsen, Espen; Moland, Even; Myksvoll, Mari Skuggedal; Nøttestad, Leif; Olsen, Erik Joel Steinar; Skaret, Georg; Skjæraasen, Jon Egil; Slotte, Aril; Staby, Arved; Stenevik, Erling Kåre; Stiansen, Jan Erik; Stiasny, Martina H.; Sundet, Jan Henry; Vikebø, Frode Bendiksen; Huse, Geir (Peer reviewed; Journal article, 2021)Impacts of climate change on ocean productivity sustaining world fisheries are predominantly negative but vary greatly among regions. We assessed how 39 fisheries resources—ranging from data-poor to data-rich stocks—in the ... -
Jan Mayen—a new spawning and fishing area for Atlantic cod Gadus morhua
Bogstad, Bjarte (Peer reviewed; Journal article, 2022)In 2018, commercially exploitable concentrations of Atlantic cod Gadus morhua were found on the shelf around the Arctic island Jan Mayen (7 1°N, 8–9 °W) and in 2019–2021 an exploratory cod fishery with longline was carried ... -
Long-term interplay between harvest regimes and biophysical conditions may lead to persistent changes in age at sexual maturity of Northeast Arctic cod (Gadus morhua)
Carl Jacob, Rørvik; Bogstad, Bjarte; Ottersen, Geir; Kjesbu, Olav Sigurd (Peer reviewed; Journal article, 2022)This investigation commenced by constructing principal maturation schedule equations as a function of fishing mortality (F), key biophysical factors and a term attributed to fisheries-induced adaptive change (FIAC). Following ... -
Match-mismatch dynamics in the Norwegian-Barents Sea system
Ferreira, Ana Sofia De Araújo; Stige, Leif Christian; Neuheimer, Anna B.; Bogstad, Bjarte; Yaragina, Natalia A.; Prokopchuk, Irina; Durant, Joel Marcel (Peer reviewed; Journal article, 2020)A key process affecting variation in the recruitment of fish into fisheries is the spatio-temporal overlap between prey and predator (match-mismatch hypothesis, MMH). The Northeast Arctic cod Gadus morhua and its dominant ... -
Match-mismatch dynamics in the Norwegian-Barents Sea system
Ferreira, Ana Sofia De Araújo; Stige, Leif Christian; Neuheimer, Anna B.; Bogstad, Bjarte; Yaragina, Natalia A.; Prokopchuk, Irina; Durant, Joel Marcel (Peer reviewed; Journal article, 2020)A key process affecting variation in the recruitment of fish into fisheries is the spatio-temporal overlap between prey and predator (match-mismatch hypothesis, MMH). The Northeast Arctic cod Gadus morhua and its dominant ... -
Muligheter og prioriteringer for flerbestandsforvaltning i norske fiskerier
Huse, Geir; Skern-Mauritzen, Mette; Bogstad, Bjarte; Sandberg, Per; Ottemo, Trond; Veim, Anne Kjos; Sørdahl, Elisabeth; Bertelsen, Bernt (Fisken og Havet;7-2018, Research report, 2018)Denne rapporten svarer opp en henvendelse fra Stortinget som har bedt regjeringen utarbeide en opptrappingsplan for norsk bestands- og ressursforskning med mål om å utvikle og innføre en modell for flerbestandsforvaltning ... -
Panel-based Assessment of Ecosystem Condition of Norwegian Barents Sea Shelf Ecosystems
Siwertsson, Anna; Husson, Berengere; Arneberg, Per; Assmann, Karen; Assmy, Philipp; Aune, Magnus; Bogstad, Bjarte; Børsheim, Knut Yngve; Cochrane, Sabine K.J.; Daase, Malin; Fauchald, Per; Frainer, André; Fransson, Agneta; Hop, Haakon; Höffle, Hannes; Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Jentoft, Sissel; Kovacs, Kit M.; Leonard, Deanna Marie; Lind, Sigrid; Lydersen, Christian; Pavlova, Olga; Peuchet, Laurene; Primicerio, Raul; Renaud, Paul Eric; Solvang, Hiroko Kato; Skaret, Georg; van der Meeren, Gro Ingleid; Wassmann, Paul; Øien, Nils Inge (Rapport fra havforskningen;2023 - 14, Research report, 2023)The System for Assessment of Ecological Condition, coordinated by the Norwegian Environment Agency, is intended to form the foundation for evidence-based assessments of the ecological condition of Norwegian terrestrial and ... -
Panel-based Assessment of Ecosystem Condition of Norwegian Barents Sea Shelf Ecosystems - Appendices
Siwertsson, Anna; Husson, Berengere; Arneberg, Per; Assmann, Karen; Assmy, Philipp; Aune, Magnus; Bogstad, Bjarte; Børsheim, Knut Yngve; Cochrane, Sabine K.J.; Daase, Malin; Fauchald, Per; Frainer, André; Fransson, Agneta; Hop, Haakon; Höffle, Hannes; Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Jentoft, Sissel; Kovacs, Kit M.; Leonard, Deanna Marie; Lind, Sigrid; Lydersen, Christian; Pavlova, Olga; Peuchet, Laurene; Primicerio, Raul; Renaud, Paul Eric; Solvang, Hiroko Kato; Skaret, Georg; van der Meeren, Gro Ingleid; Wassmann, Paul; Øien, Nils Inge (Rapport fra havforskningen;2023 - 15, Research report, 2023) -
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 ... -
Report of the Joint Russian-Norwegian Working Group on Arctic Fisheries (JRN-AFWG) 2022
Howell, Daniel; Bogstad, Bjarte; Chetyrkin, Anatoly; Fall, Johanna Jennifer Elisabeth; Filin, Anatoly; Godiksen, Jane Aanestad; Höffle, Hannes; Johannesen, Edda; Kovalev, Yuri; Russkikh, Alexey; Vasilyev, Dmitri; Yaragina, Natalya (IMR/PINRO Joint Report Series;2022 - 6, Research report, 2022)On 30 th March 2022 all Russian participation in ICES was temporally suspended. Although the announcement of the suspension stressed the role of ICES as a “multilateral science organization”, this suspension applied not ... -
Report of the Joint Russian-Norwegian Working Group on Arctic Fisheries (JRN-AFWG) 2023
Howell, Daniel; Bogstad, Bjarte; Chetyrkin, Anatoly; Fall, Johanna Jennifer Elisabeth; Filin, Anatoly; Hallfredsson, Elvar Halldor; Höffle, Hannes; Johannesen, Edda; Kovalev, Yuri; Mikhailov, Andrey; Russkikh, Alexey; Stesko, Aleksi; Vasilyev, Dmitri; Vihtakari, Mikko; Windsland, Kristin; Yaragina, Natalya (IMR/PINRO Joint Report Series;2023 - 7, Research report, 2023)On 30 th March 2022 all Russian participation in ICES was temporally suspended. Although the announcement of the suspension stressed the role of ICES as a “multilateral science organization”, this suspension applied not ... -
Report of the Workshop on the evaluation of harvest control rules for Sebastes mentella in ICES areas 1 and 2 (WKREBMSE)
Howell, Daniel; Bogstad, Bjarte; Höffle, Hannes; Goto, Daisuke (Research report, 2018) -
Skilful prediction of cod stocks in the North and Barents Sea a decade in advance
Koul, Vimal; Sguotti, Camilla; Årthun, Marius; Brune, Sebastian; Dusterhus, Andre; Bogstad, Bjarte; Ottersen, Geir; Baehr, Johanna; Schrum, Corinna (Peer reviewed; Journal article, 2021)Reliable information about the future state of the ocean and fish stocks is necessary for informed decision-making by fisheries scientists, managers and the industry. However, decadal regional ocean climate and fish stock ...