• Advice on fishing opportunities for beaked redfish in 2023 and 2024 in ICES subareas 1 and 2 

      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, Research report, 2022)
    • Advice on fishing opportunities for Northeast Arctic cod in 2023 in ICES subareas 1 and 2 

      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, Research report, 2022)
    • Advice on fishing opportunities for Northeast Arctic haddock in 2023 in ICES subareas 1 and 2 

      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, Research report, 2022)
    • An annual profile of the impacts of simulated oil spills on the Northeast Arctic cod and haddock fisheries 

      Carroll, JoLynn; Frøysa, Håvard Guldbrandsen; Vikebø, Frode Bendiksen; Broch, Ole Jacob; Howell, Daniel; Nepstad, Raymond; Augustine, Starrlight; Skeie, Geir Morten; Bockwoldt, Mathias (Peer reviewed; Journal article, 2022)
      We simulate the combined natural and pollutant-induced survival of early life stages of NEA cod and haddock, and the impact on the adult populations in response to the time of a major oil spill in a single year. Our ...
    • 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 ...
    • Combining Ecosystem and Single-Species Modeling to Provide Ecosystem-Based Fisheries Management Advice Within Current Management Systems. 

      Howell, Daniel; Schueller, Amy M.; Bentley, Jacob W.; Buchheister, Andre; Chagaris, David; Cieri, Matthew; Drew, Katie; Lundy, Mathieu; Pedreschi, Debbi; Reid, David; Townsend, Howard (Peer reviewed; Journal article, 2021)
      Although many countries have formally committed to Ecosystem-Based Fisheries Management (EBFM), actual progress toward these goals has been slow. This paper presents two independent case studies that have combined strategic ...
    • 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)
    • Refining fisheries advice with stock-specific ecosystem information 

      Bentley, Jacob W.; Lundy, Mathiew; Howell, Daniel; Beggs, Steven E.; Bundy, Alida; Castro, Franscisco de; Fox, Clive; Heymans, Johanna; Lynam, Christopher; Pedreschi, Debbi; Schuchert, Pia; Serpetti, Natalia; Woodlock, Johnny; Reid, David (Peer reviewed; Journal article, 2021)
      Although frequently suggested as a goal for ecosystem-based fisheries management, incorporating ecosystem information into fisheries stock assessments has proven challenging. The uncertainty of input data, coupled with the ...
    • 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 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)