• Assessing impacts of simulated oil spills on the Northeast Arctic cod fishery 

      Carroll, JoLynn; Vikebø, Frode Bendiksen; Howell, Daniel; Broch, OJ; Nepstad, Raymond; Augustine, Starrlight; Skeie, Geir Morten; Bast, Radovan; Juselius, Jonas (Peer reviewed; Journal article, 2017)
    • Assessing impacts of simulated oil spills on the Northeast Arctic cod fishery 

      Carroll, JoLynn; Vikebø, Frode Bendiksen; Howell, Daniel; Broch, Ole Jacob; Nepstad, Raymond; Augustine, Starrlight; Skeie, Geir Morten; Bast, Radovan; Juselius, Jonas (Journal article; Peer reviewed, 2017)
      We simulate oil spills of 1500 and 4500 m3/day lasting 14, 45, and 90 days in the spawning grounds of the commercial fish species, Northeast Arctic cod. Modeling the life history of individual fish eggs and larvae, we ...
    • Balanced harvest: concept, policies, evidence, and management implications 

      Zhou, Shijie; Kolding, Jeppe; Garcia, Serge M.; Plank, Michael J.; Bundy, Alida; Charles, Anthony; Hansen, Cecilie; Heino, Mikko Petteri; Howell, Daniel; Jacobsen, Nis S.; Reid, David G.; Rice, Jake C.; van Zwieten, Paul A.M. (Journal article; Peer reviewed, 2019)
      Balanced harvest has been proposed to reduce fishing impact on ecosystems while simultaneously maintaining or even increasing fishery yield. The concept has attracted broad interest, but also received criticisms. In this ...
    • Balanced harvesting in a variable and uncertain world – a case study from the Barents Sea. 

      Howell, Daniel; Hansen, Cecilie; Bogstad, Bjarte; Skern-Mauritzen, Mette (Journal article; Peer reviewed, 2016-03-21)
    • Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea 

      Eriksen, Elena; Prozorkevich, Dmitry; Trofimov, Aleksandr; Howell, Daniel (Journal article; Peer reviewed, 2012-03-22)
      An 0-group fish survey is conducted annually in the Barents Sea in order to estimate fish population abundance. Data on jellyfish by-catch have been recorded since 1980, although this dataset has never been analysed. In ...
    • A closed life-cycle model for Northeast Arctic cod 

      Bogstad, Bjarte; Howell, Daniel; Åsnes, Morten Nygaard (ICES CM documents, Working paper, 2004)
      For Northeast Arctic cod (Gadus morhua), there is much knowledge available concerning the main population dynamics processes (growth, maturation, fecundity, recruitment, natural mortality, fishing mortality). This knowledge ...
    • Comparison of the effects of forced errors in survey data between an age and an age-and-length structured model of Northeast Arctic Cod 

      Howell, Daniel (ICES CM documents, Working paper, 2004)
      It is known that many fisheries data sets contain several different sources of error. It is likely that models with different structures will, in general, be affected in different ways by these errors. It is therefore ...
    • Exploring balanced harvesting by using an Atlantis ecosystem model for the Nordic and Barents seas 

      Nilsen, Ina; Kolding, Jeppe; Eide, Cecilie Hansen; Howell, Daniel (Peer reviewed; Journal article, 2020)
      “Balanced Harvesting” (BH) has been suggested as a possible strategy to meet the objectives of the Ecosystem Approach to Fisheries, ensuring a high sustainable yield while maintaining ecosystem structure and function. BH ...
    • Final report for the REDUS project - Reduced Uncertainty in Stock Assessment 

      Olsen, Erik Joel Steinar; Aanes, Sondre; Aldrin, Magne Tommy; Breivik, Olav Nikolai; Fuglebakk, Edvin; Goto, Daisuke; Handegard, Nils Olav; Hansen, Cecilie; Holmin, Arne Johannes; Howell, Daniel; Johnsen, Espen; Jourdain, Natoya; Korsbrekke, Knut; Ono, Kotaro; Otterå, Håkon Magne; Perryman, Holly Ann; Subbey, Samuel; Søvik, Guldborg; Umar, Ibrahim; Vatnehol, Sindre; Vølstad, Jon Helge (Rapport fra havforskningen;2021 - 16, Research report, 2021)
      The REDUS project (2016-2020) has been a strategic project at the Institute of Marine Research (IMR) aimed at quantifying and reducing the uncertainty in data-rich and age-structured stock assessments (e.g., cod, herring, ...
    • Inadequate risk assessments – A study on worst-case scenarios related to petroleum exploitation in the Lofoten area 

      Hauge, Kjellrun Hiis; Blanchard, Anne; Andersen, Gisle; Boland, Ragnhild; Grøsvik, Bjørn Einar; Howell, Daniel; Meier, Sonnich; Olsen, Erik; Vikebø, Frode (Journal article; Peer reviewed, 2013-08-28)
      Heated debates are currently taking place on whether to open the area of Lofoten and Vesteralen in Northern Norway for petroleum production. Seismic explorations in this area have indicated promising petroleum resources. ...
    • An overview of Gadget, the Globally applicable Area-Disaggregated General Ecosystem Toolbox 

      Begley, James; Howell, Daniel (ICES CM documents, Working paper, 2004)
      Gadget is the Globally applicable Area-Disaggregated General Ecosystem Toolbox. Gadget is a powerful and flexible framework that has been developed to model complicated statistical marine ecosystems within a fisheries ...
    • Projecting Marine Mammal Distribution in a Changing Climate 

      Silber, Gregory; Lettrich, Matthew; Thomas, Peter; Baker, Jason, D; Baumgartner, Mark; Becker, Elisabeth, A; Boveng, Peter; Dick, Dorothy; Fiechter, Jerome; Forcada, Jaume; Forney, Karin; Griffis, Roger; Hare, Jonathon; Hobday, Alistair; Howell, Daniel; Laidre, Kristin L.; Mantua, Nate; Quakenbush, Lori; Santora, Jarrod A.; Stafford, Kathleen M.; Spencer, Paul; Stock, Charles; Sydeman, William J.; Van Houtan, Kyle; Waples, Robin S. (Peer reviewed; Journal article, 2017)
    • 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)
    • 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 ...

      Bertignac, Michel; Bjornsson, Hoskuldur; Brooks, Mollie Elisabeth; Brunel, Thomas; Butterworth, Doug; Campbell, Andrew; Cerviño, Santiago; Deroba, Jonathan; Elvarsson, Bjarki Thor; Fischer, Simon; Garcia, Dorleta; Goto, Daisuke; Gras, Michael; Hintzen, Niels T.; Holmgren, Noél; Howell, Daniel; Huynh, Quang; Jardim, Ernesto; Kell, Laurence T.; Konrad, Christoph; Kraak, Sarah B. M.; Kronlund, Allen; Levontin, Polina; Lordan, Colm; Mendes, Hugo; Miethe, Tanja; Mosqueira, Iago; De Oliveira, José A.A.; Pastoors, Martin; Pinto, Cecilia; Sparrevohn, Claus Reedtz; Taylor, Marc (Research report, 2019)
      The purpose of the meeting was to bring up to date the methodologies and technical specifications that should be incorporated in Management Strategy Evaluation (MSE) work in ICES. The workshop was tasked with reviewing ...