Blar i Articles på forfatter "Ingvaldsen, Randi"

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    • Changes in the relationship between sea temperature and recruitment of cod, haddock and herring in the Barents Sea 

      Bogstad, Bjarte; Dingsør, Gjert Endre; Ingvaldsen, Randi; Gjøsæter, Harald (Journal article; Peer reviewed, 2013-06-14)
      Cod, haddock and herring in the Barents Sea have strongly variable recruitment. For these three stocks, earlier studies have suggested a high correlation between their recruitment and a positive relationship between high ...

    • Heat in the Barents Sea: transport, storage, and surface fluxes 

      Smedsrud, L.H.; Ingvaldsen, Randi; Nilsen, Jan Even Øie; Skagseth, Øystein (Journal article; Peer reviewed, 2010)
      A column model is set up for the Barents Sea to explore sensitivity of surface fluxes and heat storage from varying ocean heat transport. Mean monthly ocean transport and atmospheric forcing are synthesised and force the ...

    • 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 ...

    • Recruitment of shrimp (Pandalus borealis) in the Barents Sea related to spawning stock and environment 

      Aschan, Michaela; Ingvaldsen, Randi (Journal article; Peer reviewed, 2008-10)
      The shrimp spawn in autumn, and the females carry their eggs as out roe until spring when the larvae hatch. Within a period of 2 months the shrimp larvae settle to the bottom. It has been claimed that the year-class strength ...

    • Responses in spatial distribution of Barents Sea capelin to changes in stock size, ocean temperature and ice cover 

      Ingvaldsen, Randi; Gjøsæter, Harald (Journal article; Peer reviewed, 2013-06-14)
      Using data for the period 1972–2010, we relate the variations in the Barents Sea capelin distribution to stock size, ocean temperatures and the area available for dispersal during summer. We find a strong relation between ...

    • Skillful prediction of Barents Sea ice cover 

      Onarheim, Ingrid Husøy; Eldevik, Tor; Årthun, Marius; Ingvaldsen, Randi; Smedsrud, Lars H. (Journal article; Peer reviewed, 2015-07-08)
      A main concern of present climate change is the Arctic sea ice cover. In wintertime, its observed variability is largely carried by the Barents Sea. Here we propose and evaluate a simple quantitative and prognostic framework ...

    • Synergies between climate and management for Atlantic cod fisheries at high latitudes 

      Kjesbu, Olav Sigurd; Bogstad, Bjarte; Devine, Jennifer A.; Gjøsæter, Harald; Howell, Daniel; Ingvaldsen, Randi; Nash, Richard D.M.; Skjæraasen, Jon Egil (Journal article; Peer reviewed, 2014-02-18)
      The widespread depletion of commercially exploited marine living resources is often seen as a general failure of management and results in criticism of contemporary management procedures. When populations show dramatic and ...

    • Temporal synchrony and variation in abundance of Atlantic salmon (Salmo salar) in two subarctic Barents Sea rivers: influence of oceanic conditions 

      Niemelä, Eero; Erkinaro, Jaakko; Dempson, J. Brian; Julkunen, Markku; Zubchenko, Alexander; Prusov, Sergei; Svenning, Martin A.; Ingvaldsen, Randi; Holm, Marianne; Hassinen, Esa (Journal article; Peer reviewed, 2004)
      Long-term variation in Atlantic salmon (Salmo salar) stocks was analyzed in two Barents Sea rivers, the Teno and Näätämöjoki, that represent the northernmost distribution area of the species. In contrast to most of the ...

    • The Arctic Ocean in summer: A quasi-synoptic inverse estimate of boundary fluxes and water mass transformation 

      Tsubouchi, T.; Bacon, S.; Garabato, A.C. Naveira; Aksenov, Y.; Laxon, S.W.; Fahrbach, E.; Beszczynska-Möller, A.; Hansen, E.; Lee, Craig M.; Ingvaldsen, Randi (Journal article; Peer reviewed, 2012-01-31)
      The first quasi-synoptic estimates of Arctic Ocean and sea ice net fluxes of volume, heat and freshwater are calculated by application of an inverse model to data around the ocean boundary. Hydrographic measurements from ...

    • The role of the Barents Sea in the Arctic climate system 

      Smedsrud, Lars H.; Esau, Igor; Ingvaldsen, Randi; Eldevik, Tor; Haugan, Peter M.; Li, Camille; Lien, Vidar S.; Olsen, Are; Omar, Abdirahman M.; Otterå, Odd H.; Risebrobakken, Bjørg; Sandø, Anne B.; Semenov, Vladimir A.; Sorokina, Svetlana A. (Journal article; Peer reviewed, 2013-09-16)
      Present global warming is amplified in the Arctic and accompanied by unprecedented sea ice decline. Located along the main pathway of Atlantic Water entering the Arctic, the Barents Sea is the site of coupled feedback ...