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Browsing Brage IMR by Author "Aanes, Sondre"

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    • Age reading from Northeast Arctic cod otoliths through 50 years of history 

      Zuykova, N.V.; Koloskova, V.P.; Mjanger, Hildegunn; Nedreaas, Kjell Harald; Senneset, Harald; Yaragina, Natalia A.; Ågotnes, Per; Aanes, Sondre (IMR/PINRO Joint Report Series;5/2007, Conference object, 2007)
    • Age reading from Northeast Arctic cod otoliths through 50 years of history 

      Zuykova, N.V.; Koloskova, V.P.; Mjanger, Hildegunn; Nedreaas, Kjell Harald; Senneset, Harald; Yaragina, Natalia A.; Ågotnes, Per; Aanes, Sondre (IMR/PINRO Joint Report Series;5/2007, Conference object, 2007)
    • Age reading from Northeast Arctic cod otoliths through 50 years of history [presentation] 

      Zuykova, N.V.; Ågotnes, Per; Koloskova, V.P.; Mjanger, Hildegunn; Nedreaas, Kjell Harald; Senneset, Harald; Yaragina, Natalia A.; Aanes, Sondre (IMR/PINRO Joint Report Series;5/2007, Conference object, 2007)
    • Age reading from Northeast Arctic cod otoliths through 50 years of history [presentation] 

      Zuykova, N.V.; Ågotnes, Per; Koloskova, V.P.; Mjanger, Hildegunn; Nedreaas, Kjell Harald; Senneset, Harald; Yaragina, Natalia A.; Aanes, Sondre (IMR/PINRO Joint Report Series;5/2007, Conference object, 2007)
    • Assessing the precision of the estimated age distribution of the commercial catch of Northeast Arctic cod 

      Aanes, Sondre; Pennington, Michael (ICES CM documents, Working paper, 2001)
      The assessment of Northeast Arctic cod is based on estimates of the commercial catch numbers at age. The age structure of the catch is estimated by sampling individuals from commercial fishing trips. Though it is commonly ...
    • Catchability and the spatial distribution of fishing vessels 

      Salthaug, Are; Aanes, Sondre (Journal article; Peer reviewed, 2003)
      A central problem when using commercial catch per unit effort (CPUE) as an index of fish stock abundance is that fishing vessels search for concentrations of fish. For a given stock abundance, CPUE may become high if ...
    • Cod, haddock, saithe, herring, and capelin in the Barents Sea and adjacent waters: a review of the biological value of the area 

      Olsen, Erik; Aanes, Sondre; Mehl, Sigbjørn; Holst, Jens Christian; Aglen, Asgeir; Gjøsæter, Harald (Journal article; Peer reviewed, 2009-10-09)
      Cod, haddock, saithe, herring, and capelin are the most important fish species in the Barents Sea and adjacent waters. Ecosystem-based management requires species-specific knowledge of the biological value and vulnerability ...
    • Cod, haddock, saithe, herring, and capelin in the Barents Sea and adjacent waters: a review of the biological value of the area 

      Olsen, Erik; Aanes, Sondre; Mehl, Sigbjørn; Holst, Jens Christian; Aglen, Asgeir; Gjøsæter, Harald (Journal article; Peer reviewed, 2009-10-09)
      Cod, haddock, saithe, herring, and capelin are the most important fish species in the Barents Sea and adjacent waters. Ecosystem-based management requires species-specific knowledge of the biological value and vulnerability ...
    • Estimating catch-at-age by combining data from different sources 

      Hirst, David; Storvik, Geir; Aldrin, Magne; Aanes, Sondre; Huseby, Ragnar Bang (Journal article; Peer reviewed, 2005)
      Estimating the catch-at-age of commercial fish species is an important part of the quota-setting process for many different species and almost all countries with a fishing fleet. Current procedures are usually very ...
    • Estimating catch-at-age from market sampling data using a Bayesian hierarchical model 

      Hirst, David; Tvete, Ingunn Fride; Storvik, Geir; Aanes, Sondre (ICES CM documents, Working paper, 2001)
    • Estimation of the parameters of fish stock dynamics from catch-at-age data and indices of abundance: can natural and fishing mortality be separated? 

      Aanes, Sondre; Engen, Steinar; Sæther, Bernt-Erik; Aanes, Ronny (Journal article; Peer reviewed, 2007)
      Models for fluctuations in size of fish stocks must include parameters that describe expected dynamics, as well as stochastic influences. In addition, reliable population projections also require assessments about the ...
    • Evaluation of sampling strategies for age determination of cod (Gadus morhua) sampled at the North Sea International Bottom Trawl Survey 

      Jourdain, Natoya; Breivik, Olav Nikolai; Fuglebakk, Edvin; Aanes, Sondre; Vølstad, Jon Helge (Peer reviewed; Journal article, 2020)
      The North Sea cod stock assessment is based on indices of abundance-at-age from fishery-independent bottom trawl surveys. The age structure of the catch is estimated by sampling fish for otoliths collection in a length-stratified ...
    • Improving management decisions by predicting fish bycatch in the Barents Sea shrimp fishery 

      Aldrin, Magne; Mortensen, Bjørnar; Storvik, Geir; Nedreaas, Kjell Harald; Aglen, Asgeir; Aanes, Sondre (Journal article; Peer reviewed, 2011-11-20)
      When the bycatch of juvenile fish within the Barents Sea shrimp fishery is too large, the area is closed to fishing for a certain period. Bycatch is estimated from sampled trawl hauls, for which the shrimp yield is recorded, ...
    • 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)
    • Local spatial heterogeneity in blue whiting length structure 

      Heino, Mikko; Aanes, Sondre (ICES CM documents;2007/Q:16, Working paper, 2007)
      We have used “MultiSampler”, a multiple opening-closing device that allows obtaining several samples from a single trawl haul, during the trawl-acoustic survey targeting blue whiting (Micromesistius poutassou) on their ...
    • Nordøstarktisk hyse 

      Aanes, Sondre (Havets ressurser og miljø, Chapter, 2007)
      The Northeast Arctic haddock stock is in good condition. Since 1950 the stock has shown large fluctuations in abundance, and the stock is now at the same level as the peaks in the mid 50s and the beginning of the 70s ...
    • The Norwegian reference fleet: co-operation between fisherman and scientists for multiple objectives 

      Nedreaas, Kjell Harald; Borge, Asbjørn; Godøy, Hallvard; Aanes, Sondre (ICES CM documents, Working paper, 2006)
    • Self-sampling of the Norwegian Springs Spawning Herring fishery – optimizing data collections to achieve sufficientprecision in stock assessment. ICES CM 2016/O:467 s 

      Aanes, Sondre; Vølstad, Jon Helge (ICES CM documents;2016/O:467, Lecture, 2016)
    • The specification of the data model part in the SAM model matters 

      Aldrin, Magne Tommy; Tvete, Ingunn Fride; Aanes, Sondre; Subbey, Samuel (Peer reviewed; Journal article, 2020)
      This paper considers a general state-space stock assessment modeling framework that integrates a population model for a fish stock and a data model. This way observed data are linked to unobserved quantities in the population ...
    • Stochastic population dynamics of beaked redfish (Sebastes mentella) 

      Bjørkvoll, Eirin; Grøtan, Vidar; Aanes, Sondre; Sæther, Bernt-Erik; Engen, Steinar; Aanes, Ronny (ICES CM documents;2011/A:09, Working paper, 2011)

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