Bjarte Bogstad
Works with
In addition to working on stock assessment and species interactions in the Barents Sea I also participate in several external projects, such as the EU projects FACTS and DEFINEIT and the SVIM project (Norwegian Research Council).
Curriculum Vitae
Education: Cand. scient, University of Bergen, 1986, applied mathematics (fluid mechanics). Dr. scient, University of Bergen, 1997. Thesis title: Multispecies models for the Barents Sea.
Employed at IMR since 1988, now permanently employed as senior scientist. I have taken part in development of both single-species and multispecies population models for the fish and marine mammal stocks in the Barents Sea (Fleksibest/Gadget, MULTSPEC). In connection with this I have done much work on modelling, computer programming and data preparation. For many years I have participated in stock assessment of the main commercial species in the Barents Sea (cod, haddock, saithe, redfish, Greenland halibut, herring, capelin) through participation in ICES assessment working groups. An important part of this work has been to use the results from research on multispecies interactions in the stock assessment of cod, haddock, capelin and herring. I now chair the ICES Arctic Fisheries Working Group (AFWG), which does stock assessment for demersal fish and capelin in the Barents Sea. I have also taken part in international cooperation on multispecies modelling, and have been Co-Chairman of the ICES Working Group on Multispecies Assessment Methods (WGSAM). I have for many years been strongly involved in the cooperation between IMR and the Russian marine research institute PINRO in Murmansk, and have the responsibility of maintaining the joint Norwegian/Russian stomach content data base. I have also published several articles about the ecology at the higher trophic levels in the Barents Sea.
Publications last 10 years:
9. Helle, K., Bogstad, B., Marshall, C. T., Michalsen, K., Ottersen, G., and Pennington, M. 2000. An evaluation of recruitment indices for Arcto-Norwegian cod (Gadus morhua L.). Fisheries Research 48: 55-67.
10. Bogstad, B., Haug, T. and Mehl, S. 2000. Who eats whom in the Barents Sea? NAMMCO Sci. Publ. 2: 98-119.
11. Dalpadado, P., Borkner, N., Bogstad, B., and Mehl, S. 2001. Distribution of Themisto (Amphipoda) spp. in the Barents Sea and predator-prey interactions. ICES J. Mar. Science 58: 876-895.
12. Bogstad, B., and Gjøsæter, H. 2001. Predation by cod (Gadus morhua) on capelin (Mallotus villosus) in the Barents Sea: implications for capelin stock assessment. Fisheries Research 53: 197-209.
13. Dalpadado, P., Bogstad, B., Gjøsæter, H., Mehl, S., and Skjoldal, H. R. 2002. Zooplankton-Fish Interactions in the Barents Sea. Pp. 269-291 in Sherman, K., and Skjoldal, H. R. (eds.) Large Marine Ecosystems of the North Atlantic. Elsevier Science B. V.
14. Frøysa, K. G., Bogstad, B., and Skagen, D. W. 2002. Fleksibest – an age-length structured fish stock assessment tool with application to Northeast Arctic cod (Gadus morhua L.). Fisheries Research 55: 87-101.
15. Ottersen, G., Helle, K. and Bogstad, B. 2002. Do abiotic mechanisms determine interannual variability in length-at-age of juvenile Arcto-Norwegian cod? Can. J. Fish. Aquat. Sci. 59:57-65.
16. Helle, K., Pennington, M., Bogstad, B. and Ottersen, G., 2002. Some environmental factors that influence the growth of Arcto-Norwegian cod from the early juvenile to the adult stage. Environmental Biology of Fishes 65:341-348.
17. Gjøsæter, H., Bogstad, B., and Tjelmeland, S. 2002. Assessment methodology for Barents Sea capelin (Mallotus villosus Müller). ICES J. mar. Sci. 59:1086-1095.
18. Dalpadado, P. and Bogstad, B. 2004. Diet of juvenile cod (age 0-2) in the Barents Sea in relation to food availability and cod growth. Polar biology 27:140-154.
19. Johansen, G.O., Bogstad, B., Mehl, S., and Ulltang, Ø. 2004. Consumption of juvenile herring (Clupea harengus) by cod (Gadus morhua) in the Barents Sea: a new approach to estimating consumption in piscivorous fish. Can. J. Fish. Aquat. Sci. 61: 343-359.
20. Huse, G., Johansen, G. O., Bogstad, B., and Gjøsæter, H. 2004. Studying spatial and trophic interactions between capelin and cod using individual-based modelling. ICES Journal of Marine Science 61: 1201-1213.
21. Kvamme, C., and Bogstad, B. 2007. The effect of including length structure in yield-per-recruit estimates for northeast Arctic cod. ICES Journal of Marine Science 64:357-368.
22. Hjermann, D. Ø., Bogstad, B., Eikeset, A. M., Ottersen, G., Gjøsæter, H., and Stenseth, N. C. 2007. Food web dynamics affect Northeast Arctic cod recruitment. Proceedings of the Royal Society, Series B 274:661-669.
23. Cianelli, L., Dingsør, G. E., Bogstad, B., Ottersen, G., Chan, K-S., Gjøsæter, H., Stiansen, J. E., and Stenseth, N. C. 2007. Spatial anatomy of species survival: Effects of predation and climate-driven environmental variability. Ecology 88(3):635-646.
24. Subbey, S., Howell, D., Bogstad, B., and Åsnes, M. N. 2007. Reducing Fisheries Model Complexity Using a Finite Fourier Series Parameterization. Fisheries Research, 84: 390-394.
25. Michalsen, K., Johannesen, E., and Bogstad, B. 2008. Feeding of mature cod (Gadus morhua L.) at the spawning grounds in Lofoten. ICES Journal of Marine Science 65:571-580.
26. Gjøsæter, H., Bogstad, B., and Tjelmeland, S. 2009. Ecosystem effects of three capelin stock collapses in the Barents Sea. In Haug, T., Røttingen, I., Gjøsæter, H., and Misund, O. A. (Guest Editors). 2009. Fifty Years of Norwegian-Russian Collaboration in Marine Research. Thematic issue No. 2, Marine Biology Research 5(1):40-53.
27. Yaragina, N. A., Bogstad, B., and Kovalev, Yu. A. 2009. Reconstructing the time series of abundance of Northeast Arctic cod (Gadus morhua), taking cannibalism into account. In Haug, T., Røttingen, I., Gjøsæter, H., and Misund, O. A. (Guest Editors). 2009. Fifty Years of Norwegian-Russian Collaboration in Marine Research. Thematic issue No. 2, Marine Biology Research 5(1):75-85.
28. Link, J. S., Bogstad, B., Sparholt, H., and Lilly, G. R. 2009. Role of Cod in the Ecosystem. Fish and Fisheries 10(1):58-87.
29. Lindstrøm, U., Smout, S., Howell, D., and Bogstad, B. 2009. Modelling multispecies interactions in the Barents Sea ecosystem with special emphasis on minke whales, cod, herring and capelin. Deep Sea Research Part II: Topological Studies in Oceanography 56: 2068-2079.
30. Dalpadado, P., Bogstad, B., Eriksen, E., and Rey, L. 2009. Distribution and diet of 0-group cod and haddock in the Barents Sea in relation to food availability. Polar Biology 32:1583-1596.
31. Hjermann, D. Ø., Bogstad, B., Dingsør, G. E., Gjøsæter, H., Ottersen, G., Eikeset, A. M., and Stenseth, N. C. 2010. Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin. Canadian Journal of Fisheries and Aquatic Science 67:1363-1375.
32. Howell, D., and Bogstad, B. 2010. A combined Gadget/FLR model for management strategy evaluations of the Barents Sea. ICES Journal of Marine Science 67:000-000 (doi:10.1093/icesjms/fsq135)
33. Eriksen, E., Bogstad, B., and Nakken, O. 2010. Fluctuations of 0-group fish biomass and role of 0-group fish in the Barents Sea ecosystem. Polar Biology (accepted).
