Blar i Brage IMR på forfatter "Johannesen, Edda"

Viser treff 41-60 av 67

    • Investigations on demersal fish in the Barents Sea winter 2006 

      Aglen, Asgeir; Alvsvåg, John; Høines, Åge S.; Johannesen, Edda; Mehl, Sigbjørn (Fisken og havet, Research report, 2008)
      A combined acoustic and bottom trawl survey to obtain indices of abundance and estimates of length and weight at age has been carried out each winter (4-6 weeks in January- March) since 1981 in the Barents Sea. The target ...

    • Joint PINRO/IMR report on the state of the Barents Sea ecosystem 2005/ 2006 

      Stiansen, Jan Erik; Aglen, Asgeir; Bogstad, Bjarte; Budgell, W. Paul; Dalpadado, Padmini; Dolgov, Andrey V.; Dommasnes, Are; Filin, Anatoly; Gjøsæter, Harald; Hauge, Kjellrun Hiis; Høines, Åge S.; Ingvaldsen, Randi; Johannesen, Edda; Jørgensen, Lis Lindal; Karsakov, A.L.; Klungsøyr, Jarle; Knutsen, Tor; Lien, Vidar S.; Loeng, Harald; Mehl, Sigbjørn; Buhl-Mortensen, Pål; Muchina, N.V.; Nesterova, V.N.; Olsen, Erik; Orlova, Emma L.; Ozhigin, Vladimir K.; Pedchenko, Andrey; Stenevik, Erling Kåre; Skogen, Morten D.; Titov, Oleg V.; Tjelmeland, Sigurd; Zabavnikov, V.B.; Ziryanov, S.V.; Zhukova, Nathalia; Øien, Nils; Aanes, Sondre (IMR/PINRO joint report series, Research report, 2006)

    • Kunnskap om marine naturressurser i Barentshavet sørøst 

      Fosså, Jan Helge; Aglen, Asgeir; Børsheim, Yngve; Chierici, Melissa; Eriksen, Elena; Hvingel, Carsten; Johannesen, Edda; Jørgensen, Lis Lindal; Knutsen, Tor; Naustvoll, Lars-Johan; Skern-Mauritzen, Mette; Sundet, Jan H.; Vikebø, Frode (Rapport fra Havforskningen;Nr. 21 - 2012, Working paper, 2012-06)
      The status of knowledge of the resources in the Southeastern Barents Sea is reported. The area is dominated by Atlantic watermasses flowing eastwards. The planktonic production is high and secure good feeding conditions ...

    • Large-scale patterns in community structure of benthos and fish in the Barents Sea 

      Johannesen, Edda; Jørgensen, Lis Lindal; Fossheim, Maria; Primicerio, Raul; Greenacre, Michael; Ljubin, Pavel A.; Dolgov, Andrey V.; Ingvaldsen, Randi; Anisimova, Natalya A.; Manushin, Igor E. (Journal article; Peer reviewed, 2016-04-23)
      Biogeographical patterns have an ecological basis, but few empirical studies possess the necessary scale and resolution relevant for investigation. The Barents Sea shelf provides an ideal study area, as it is a transition ...

    • Linking tagging technology and molecular genetics to gain insight in the spatial dynamics of two stocks of cod in Northeast Atlantic waters 

      Michalsen, Kathrine; Johansen, Torild; Johannesen, Edda (ICES CM documents, Working paper, 2006)
      The Northeast Arctic cod (Gadus morhua L.: NEAC) is thought to be the most abundant cod stock in the North Atlantic, while the catches of the partially co-occurring Norwegian coastal cod (NCC) stocks have dramatically ...

    • Marine fishes expert network: Findings and recommendations from the circumpolar biodiversity monitoring program´s state of the Arctic marine biodiversity report 

      Hedges, Kevin; MacPhee, Shannon; Valtýsson, Hreiðar Þór; Johannesen, Edda; Mecklenburg, Catherine W. (Lecture, 2018)

    • Marine fishes of the arctic region 

      Mecklenburg, Catherine W.; Lynghammar, Arve; Johannesen, Edda; Byrkjedal, Ingvar; Christiansen, Jørgen Schou; Dolgov, Andrey V.; Karamushko, Oleg V.; Mecklenburg, Tony; Møller, Peter Rask; Steinkte, Dirk; Wienerroither, Rupert (Lecture, 2018)

    • Persistent differences in recruitment variability among co-occurring North Atlantic groundfish species 

      Johannesen, Edda; Keith, Dave; Fogarty, Michael; Shackell, Nancy; Frank, Kenneth T. (Peer reviewed; Journal article, 2022)
      Knowledge of recruitment and its variability in marine fish populations contributes to sustainable fisheries but a full understanding remains elusive. An earlier study showed that haddock (Melanogrammus aeglefinus) stocks ...

    • Predator–prey overlap in three dimensions: cod benefit from capelin coming near the seafloor 

      Fall, Johanna Jennifer Elisabeth; Johannesen, Edda; Englund, Göran; Johansen, Geir Odd; Fiksen, Øyvind (Peer reviewed; Journal article, 2021)
      Spatial overlap between predator and prey is a prerequisite for predation, but the degree of overlap is not necessarily proportional to prey consumption. This is because many of the behavioural processes that precede ...

    • 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 on the diet of the blue whiting in the Barents Sea in the summer 2005 and in the winters 2002 and 2006 

      Beck, Inger Marie; Eriksen, Kirsti Børve; Heino, Mikko; Johannesen, Edda; Olsen, Erik (Fisken og havet, Research report, 2006)
      We analyzed stomach content of blue whiting in the Barents Sea in February-March 2002 and 2006, and in August-September 2005. Krill was the most important prey for blue whiting in the Barents Sea, and constituted about 90% ...

    • Resource‐driven colonization by cod in a high Arctic food web 

      Johannesen, Edda; Yoccoz, Nigel; Tveraa, Torkild; Schackell, Nancy L.; Ellingsen, Kari; Dolgov, Andrey V.; Frank, Kenneth T. (Peer reviewed; Journal article, 2020)
      1. Climate change is commonly associated with many species redistributions and the influence of other factors may be marginalized, especially in the rapidly warming Arctic. 2. The Barents Sea, a high latitude large marine ...

    • The rise of a marine generalist predator and the fall of beta diversity 

      Ellingsen, Kari; Yoccoz, Nigel; Tveraa, Torkild; Frank, Kenneth T.; Johannesen, Edda; Anderson, Marti J.; Dolgov, Andrey V.; Shackell, Nancy L. (Peer reviewed; Journal article, 2020)
      Determining the importance of physical and biological drivers in shaping biodiversity in diverse ecosystems remains a global challenge. Advancements have been made towards this end in large marine ecosystems with several ...

    • Seasonal dynamics of spatial distributions and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea 

      Fall, Johanna Jennifer Elisabeth; Ciannelli, Lorenzo; Skaret, Georg; Johannesen, Edda (Journal article; Peer reviewed, 2018)
      The trophic link between cod (Gadus sp.) and capelin (Mallotus sp.) is important in many panarctic ecosystems. Since the early 2000s, the Northeast Arctic cod stock (G. morhua) in the Barents Sea has increased greatly, and ...

    • Spatial variation and structural change of the Barents Sea fish community 

      Fossheim, Maria; Johannesen, Edda; Primicerio, Raul; Aschan, Michaela (ICES CM documents;2009/ E:21, Working paper, 2009)
      We document the spatial patterns found in the Barents Sea fish community in relation to environmental parameters, analysing data from the ecosystem surveys covering the Norwegian part of the Barents Sea during 2004-2008 ...

    • Stimfisk - et viktig element i det dynamiske havmiljøet 

      van der Meeren, Gro; Aglen, Asgeir; Eriksen, Elena; Johannesen, Edda; Knutsen, Tor; Stenevik, Erling Kåre; Tjelmeland, Sigurd; Øien, Nils; Lorentsen, Svein-Håkon (Conference object, 2010-09-23)

    • Stimfisk - et viktig element i det dynamiske havmiljøet 

      van der Meeren, Gro; Aglen, Asgeir; Eriksen, Elena; Johannesen, Edda; Knutsen, Tor; Stenevik, Erling Kåre; Tjelmeland, Sigurd; Øien, Nils; Lorentsen, Svein-Håkon (Conference object, 2010-09-23)

    • StoX applied to cod and haddock data from the Barents Sea NOR-RUS ecosystem cruise in autumn - Swept area abundance, length and weight at age 2004-2017 

      Johannesen, Edda; Johnsen, Espen; Johansen, Geir Odd; Korsbrekke, Knut (Fisken og Havete;2019 - 6, Research report, 2019)
      North East Arctic cod and haddock are the largest stocks of these species in the world. Data from the Barents Sea NOR-RUS ecosystem cruise (BESS) in autumn is used as input to the assessment of these species. Here, we used ...

    • Survey report from the CODFUN 2016114 Barents Sea survey 5.-11. oktober 2016 

      Skaret, Georg; Johannesen, Edda; Fall, Johanna Jennifer Elisabeth; Fiksen, Øyvind (Rapport fra havforskningen;Nr. 41 - 2016, Research report, 2016)
      The survey is part of the project “The cod – capelin interaction in the Barents Sea: spatial dynamics in predator prey overlap and functional response (CODFUN)” funded by the Norwegian Research Council (NRC project number ...