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Pedersen, Torstein


Professor
Arktisk og marin biologi


Telefon: 776 44697
Mobil jobb / Mobil privat: /
Epost : torstein.pedersen@uit.no
Kontor/besøksadresse : NFH C 212 / Norges Fiskerihøgskole
Funksjon : Professor. Fiskerbiologi og -økologi

Forskningsinteresser

Forsker på sammenhengene mellom viktige fiske- og fangstbare marine bestander og deres byttedyr, predatorer og miljø. Arbeider med å utvikle økosystemmodeller for nordlige kyst-  og havområder.

CV

CURRICULUM VITAE

Torstein Pedersen

Born: 8 July 1959, Sortland in Vesterålen

Adress: Sørliaveien 42, 9018 Tromsø

1985          Master (Cand. Scient.) in Fisheries Biology, University of Bergen, Norway

1986          Research fellow, Institute of Marine Research, (Austevoll) Bergen

1986-1993  Research fellow at University of Tromsø

1994          PhD (Dr. Scient.) in Resource Biology, University of Tromsø, Norway

1994-2009 Associate professor in Fisheries Biology at University of Tromsø

2009-        Professor in Fisheries Biology at University of Tromsø

Publications with peer review

1. Pedersen, T. 1984. Variation in peak spawning of Arcto-Norwegian cod (Gadus morhua L.) during the time period 1929-1982 based on indices estimated from fishery statistics. In: E. Dahl, D.S. Danielssen, E. Moksness and P. Solemdal (Editors), The Propagation of cod, Gadus morhua L. Flødevigen Rapportser, 1984(1): 301-316.

2. Øiestad, V., Pedersen, T., Folkvord, A., Bjordal, Å., and Kvenseth, P.G. 1987. Automatic feeding and harvesting of juvenile Atlantic cod (Gadus morhua L.) in a pond. Modelling, identification and control, 8(1): 39-46.

3. Pedersen, T., and Jobling, M. 1989. Growth rates of large, sexually mature cod, Gadus morhua, in relation to condition and temperature during an annual cycle. Aquaculture, 81: 161-168.

4. Pedersen, T., Eliassen, J.E., Eilertsen, H.C., Tande, K., and Olsen, R.E. 1989. Feeding, growth, lipid composition and survival of cod (Gadus morhua L.) larvae related to environmental conditions in an enclosure in Northern Norway. Rapp. P.-v. Réun. Cons. int. Explor. Sea, 191: 409-420.

5. Olsen, R.E., Henderson, R.J., and Pedersen, T. 1991. The influence of dietary lipid classes on the fatty acid composition of small cod juveniles (Gadus morhua L.) reared in an enclosure in Northern Norway. J. Exp. Mar. Biol. Ecol., 148: 59-76.

6. Pedersen, T., and Carlsen, B., 1991. Marking cod (Gadus morhua L.) juveniles with oxytetracycline incorporated into the feed. Fish. Res., 12: 57-64.

7. Pedersen, T., and Falk-Petersen, I. B., 1992. Morphological changes during the transformation from larvae to juvenile in cod (Gadus morhua L.), with particular reference to the development of stomach and pyloric caeca. J. Fish Biol., 41: 449-461.

8. Løken, S., Pedersen, T., and Berg, E., 1994. Vertebrae numbers as an indicator for the recruitment mechanism of coastal cod of northern Norway. ICES mar. Sci. Symp., 198: 510-516.

9. Kanapathippillai, P., Berg, E., dos Santos, J., Gulliksen, B., and Pedersen, T. 1994. The food consumption of cod (Gadus morhua L.) in a high-latitude enhancement area. Aquacult. Fish. Manag., 25: (Suppl. 1) 65-76.

10. Nilssen, E.M., Pedersen, T., Hopkins, C.C.C., Thyholdt, K., and Pope, J.G., 1994. Recruitment variability and growth of Northeast Arctic cod: influence of physical environment, demography, and predator - prey energetics. ICES mar. Sci. Symp., 198: 449-470.

11. Jobling, M., and Pedersen, T., 1995. Cultivation of the Atlantic cod. pp. 347-356 In Production of Aquatic Animals - fishes. (Eds. C.E. Nash and A.J. Novotny). Elsevier. 405 pp.

12. Løken, S., and Pedersen, T., 1996. Effect of parent type and temperature on vertebrae number in juvenile cod, Gadus morhua (L.) in Northern Norway. Sarsia, 80: 293-298.

13. Skreslet, S., Albrigtsen, I., Andersen, A.P., Kolbeinshavn, A., Pedersen, T., and Unstad, K., 1999. Migration, growth and survival in stocked and wild cod (Gadus morhua L.) in the Vestfjord region, north Norway. p. 306-314 In: Howell, B.R., Moksness, E., and Svåsand, T (eds.), Stock enhancement and Sea Ranching. Blackwell Scientific Publications, Oxford.

14. Nøstvik, F., and Pedersen, T., 1999. Movement patterns and growth of wild and hatchery-reared cod (Gadus morhua L.) released as 1-group. p. 315-333 In: Howell, B.R., Moksness, E., and Svåsand, T (eds.), Stock enhancement and Sea Ranching. Blackwell Scientific Publications, Oxford.

15. Johansen, R., Pedersen, T., and Barrett, R., 1999. Cormorants (Phalacrocorax carbo) as Predators in a Cod Gadus morhua Enhancement Area in north Norway. p. 334-349 In: Howell, B.R.,

Moksness, E., and Svåsand, T (eds.), Stock enhancement and Sea Ranching. Blackwell Scientific Publications, Oxford.

16. Nøstvik, F., and Pedersen, T., 1999. Catching cod (Gadus morhua ) for tagging experiments. Fish. Res., 42:57-66.

17. Langeland A. and Pedersen, T. 2000. A 27 year study of brown trout (Salmo trutta) population dynamics and exploitation in Lake Songsjøen, Central Norway. J. Fish Biology, 57: 1227-1244.

18. Svåsand, T., Kristiansen, T.S., Pedersen, T., Vea Salvanes, A.G., Engelsen, R., Nævdal, G., Nødtvedt, M., 2000. Enhancement of cod stocks. Fish and Fisheries, 1: 173-205.

19. Berg, E., and Torstein, P., 2001. Variability in recruitment, growth and sexual maturity of coastal cod (Gadus morhua L.) in a fjord system in northern Norway. Fish Res., 52:179-189.

20. Johansen, F., Barrett, R., and Pedersen, T., 2001. Foraging strategies of Great Cormorants Phalacorcorax carbo carbo wintering north of the Arctic Circle. Bird Study, 48: 59-67.

21. Larsen, L.H., and Pedersen, T. 2002. Mortality, growth and migration of released reared and wild cod (Gadus morhua L.) in Malangen, northern Norway. Sarsia, 87: 97-109.

22. Pedersen, T., and Pope, J. 2003. Sampling and a mortality model of a Norwegian fjord cod (Gadus morhua L.) population. Fish. Res., 63: 1-20.

23. Pedersen, T., and Pope, J. 2003. How may feeding data be integrated into a model for a Norwegian fjord population of cod (Gadus morhua L.)? Scientia Marina, 67(Suppl. 1): 155-169.

24. Luksenburg, J.A., and Pedersen, T. 2003. Sexual and geographical variation in life history parameters of the shorthorn sculpin Myoxocephalus scorpius. J. Fish. Biol. 61: 1453-1464.

25. Luksenburg, J.A., Pedersen, T., and Falk-Petersen, I.B. 2004. Reproduction of longhorn sculpin Myoxocephalus scorpius in northern Norway. J. Sea Research. 51: 157-166.

26. Mikkelsen, N., and Pedersen, T. 2004. How can the stock-recruitment relationship of the Barents Sea capelin (Mallotus villous) be improved by incorporating biotic and abiotic factors? Polar Research 23: 19-26.

27. Svenning, M.-A., Fagermo, S.E., Barrett, R.T., Borgstrøm, R., Vader, W., Pedersen, T., and Sandring, S. 2005. Goosander predation and its potential impact on Atlantic salmon smolts in the River Tana estuary, northern Norway J. Fish. Biol. 66: 924-937.

28. Svenning, M.-A., Borgstrøm, R., Dehli, T.O., Moen, G., Barrett, R.T., Pedersen, T., and Vader, W. 2005. The impact of marine fish predation on Atlantic salmon smolts (Salmo salar) in the Tana estuary, North Norway, in the presence of an alternative prey, lesser sandeel (Ammodytes marinus). Fish. Res., 76: 466-474.

29. Sivertsen, S., Pedersen, T., Lindstrøm, U., and Haug, T., 2006. Resource partitioning between cod (Gadus morhua) and minke whale (Balaenoptera acutorostrata) in the Barents Sea. Marine Biology Research, 2: 89-99.

30. Godiksen, J., Hallfredsson, E., Pedersen, T., 2006. Effects of alternative prey on predation intensity from herring (Clupea harengus) and sand eel (Ammodytes marinus) on capelin (Mallotus villosus) larvae in the Barents Sea. J. Fish. Biol., 69: 1807-1823.

31. Nilsen, M., Pedersen, T., Nilssen, E., 2006. Macrobenthic productivity (P/B) and production in a high-latitude ecosystem, North Norway. Mar. Ecol. Progr. Ser., 321: 67-77.

32. Hallfredsson, E., Pedersen, T., and Præbel, K. 2007. Estimation of digestion rates herring for (Clupea harengus L.) feeding on fish larvae. J. Fish Biol., 70: 638-643.

33. Hallfredsson, E., and Pedersen, T., 2007. Effects of predation from pelagic 0-group cod (Gadus morhua) on mortality rates of capelin larvae (Mallotus villosus) in the Barents Sea. Can. J. Fish. Aquat. Sci., 64: 1710-1722.

34. Pedersen, T., Cuveliers, and E., Berg, E. 2008. Spatial scales of movement in Northeast Atlantic coastal cod. Rev. Fish. Sci., 16: 371-379. (doi: 10.1080/10641260701678462)

35. Ericson, K., Barrett, R.T., and Pedersen, T. 2008. The effect of changes in diet of Atlantic Puffin Fratercula arctica on their growth and survival. Waterbird, 31: 107-114.

36. Pedersen, T., Nilsen, M., Nilssen, E.M., Berg, E., and Reigstad, M. 2008. Trophic model of a lightly exploited cod-dominated ecosystem. Ecol. Model., 214: 95-111. (doi: 10.1016/j.ecolmodel.2007.12.012)

37. Pedersen, T., Fossheim, M. 2008. Diet of 0-group stages of capelin (Mallotus villosus), herring (Clupea harengus) and cod (Gadus morhua) during spring and summer in the Barents Sea. Mar. Biol. 153:1037-1046. (doi: 10.1007/s00227-007-0875-x).

38. Ivarjord, T., Pedersen, T., Moksness, E., 2008. Effects of growth rates on the otolith incement deposition rate in capelin larvae (Mallotus villosus). J. Exp. Mar. Biol. Ecol., 358: 170-177.

39. Nilsen, M., Pedersen, T., Nilssen, E.M., Fredriksen, S. 2008. Trophic studies in a high-latitude fjord ecosystem a comparison of stable isotope analyses (δ13C and δ15N) and trophic level estimates from a mass-balance model. Can. J. Fish. Aquat. Sci., 65: 2791-2806. (doi: 10.1139/F08-180)

40. Morissette, L., Pedersen, T, and Nilsen, M. 2009. Comparing pristine and depleted ecosystems : the Sørfjord, Norway vs the Gulf of St. Lawrence, Canada. Effects of intense fisheries on marine ecosystems. Progr. Oceanogr., 81: 174-187.

41. Pedersen, O.P., Pedersen, T., Tande, K.S. and Slagstad, D. 2009. Integrating spatial and temporal mortality from herring on capelin larvae - A study from the Barents Sea. ICES J. mar. Sci., 66: 2183-2194. (doi:10.1093/icesjms/fsp192)

42. Pedersen, O.P., Tande, K.S., Pedersen, T. and Slagstad, D. 2009. Advection and retention as life trait modulators of capelin larvae - A case study from the Norwegian coast and the Barents Sea. Fish. Res., 97: 234-242.

43. Hallfredsson, E., Pedersen, T. 2009. Effects of predation from juvenile herring (Clupea harengus) on mortality rates of capelin (Mallotus villosus) larvae. Can. J. Fish.Aquat. Sci., 66: 1693-1706. (doi: 10.1139/F09-105.)

44. Pedersen, T., Tande, K.S., Pope, J.G., 2009. Introduction to the Proceedings of the ECONORTH Symposium on Ecosystem Dynamics in the Norwegian and Barents Sea. Deep-Sea Research Part II, 56: 1893-1894. doi: 10.1016/j.dsr2.2008.11.003

45. Barrett, R.T., Bugge, J., Pedersen, T., 2010. No evidence of sez-specific differences i choice of fish caught for chicks of self-feeding among Common Guillemots Uria aalge. Seabirds, 23:7-13

46. Bugge, J., Barrett, R., Pedersen, T., 2011. Optimal foraging in chick-raising Common Guillemots (Uria aalge). J. Ornithol., 152: 253-259.  doi:10.1007/s10336-010-0578-9

47. Ramsvatn, S., Pedersen, T., 2012.Ontogenetic niche changes in haddock Melanogrammus aeglefinus reflected by stable isotope signatures, δ13C and δ15N. Mar. Ecol. Prog. Ser., 451: 175-185. doi: 10.3354/meps09604

48. Fevolden, S.E., Westgaard, J-I., Pedersen, T., Præbel, K., 2012. Settling depth vs. genotype and size vs. genotype correlations at the Pan I locus in 0-group Atlantic cod Gadus morhua L.. Mar. Ecol. Prog. Ser., 468: 267-278.

49. Mikkelsen, N., Pedersen, T., 2012.Consumption of lumpsucker eggs by the invasive red king crab and impact on lumpsucker recruitment. Mar. Ecol. Prog. Ser., 469: 87-99.

50. Ofstad, L.H., Angus, C., Pedersen, T., Steingrund, P., 2013. Age and growth of anglerfish (Lophius piscatorius) in Faroese waters. Fish. Res., 139: 51-60.

Dr. scient. (PhD) thesis

Pedersen, T., 1993. Aspects of start-feeding and rearing of cod (Gadus morhua L.) juveniles employed in enhancement studies of coastal cod populations. Dr. scient. thesis, The Norwegian College of Fishery Science, University of Tromsø, Norway, Tromsø. 141 pp.

Referee in journals and symp. proceedings

Aquaculture, Aquatic Living Resources, Canadian Journal of Fisheries and Aquatic Science, Deep Sea Research II, Ecological Modelling, Ecography, Fisheries Research, Fishery Bulletin, ICES Journal of Marine Science, Journal of Experimental Marine Biology and Ecology, Journal of Fish Biology, Journal of Sea Research, Sarsia, Marine Biology Research, Marine Ecology Progress Series, Progress in Oceanography, proceedings from 5 international symposis

Administration and project leadership

1994-1997 Leader of the project "Enhancement of cod stocks in fjords". The project was a part of the PUSH-program (Program for development and stimulation of stock enhancement). Supported by the Norwegian Department for Fisheries. 1994-1997 Leader for the project "Effects of predation on recruitment variability in cod stocks" funded by the Norwegian Research Council. 2001-2005 Leader for "Workpackage 3 "Predator-prey interactions in the field" within the strategic program BASECOEX (Capelin and Herring in the Barents Sea - Coexistence or Exclusion) supported by the Norwegian Research Council 1995 and 2005-2008 Member of the board at Norwegian College for Fishery Research, University of Tromsø 2008- Responsible for Ecopath-modelling on the Strategic Institute Program (EPIGRAPH) run by the Institute of Marine Research, Norway. 2008- Leader for the project "Investigating coastal ecosystem structure and dynamics using Ecopath/Ecosim ecosystem models and stable isotope data" funded by the Research Council of Norway 2008- Vice-member of the board for the Norwegian Oceanographers Association.

International activities

Have acted as external supervisor for master students Søren Poulsen (University of Copenhagen, Denmark), Jeroen van der Kooij and Jolanda Luxemburg (University of Groeningen, The Netherlands), Jane Godiksen (University of Århus, Denmark). 1997- Participated and a partner in the international EU-funded project "Placing Fisheries in their Ecosystem Context", see:http://www.ecopath.org/. 2004 Convenor for the session on the "Theme Session DD on Mortality and Linkages between Fish Eggs/Larvae and their Predators in Marine Ecosystems - A Multidisciplinary Approach" at the ICES Annual Science Meeting in Vigo Spain 2007 Convenor for the ECONORTH (Ecosystem Dynamics in the Norwegian Sea and Barents Sea) Symposium that was held at the Norwegian College of Fishery Science, University of Tromsø, Norway, 12.th - 15.th March 2007, see:http://www.nfh.uit.no/econorth. Guest Co-editor for symposium proceedings published in Deep Sea Research II, volume 56, issues 21-22.

Teaching and evaluation of exams

Has extensive teaching experience on courses in fishery biology since 1993. Responsible for course in ecological modelling in 2006. Have given lectures in courses in general ecological methodology. Have evaluated exams (sensor) in Arctic Marine Biology at the University Studies at Svalbard. Have given lecture at international PhD course in "Nursery ground Ecology" in Bergen 2009.

Supervision of master and PhD students

Have supervised 26 master students on their master thesis to final exam and are currently supervising 3 students.

Have supervised 3 PhD students; Elvar Hallfredsson (2001-2006), Marianne Nilsen (2003-2007) and Lise H. Ofstad (2009-2012) which have defended their degree. Are currently supervising PhD students Nina Mikkelsen (2004-2010), Kristin Windsland (2008-2011), Silje Ramsvatn (2009-2012), Mona Fuhrman (2010-2014) and Helene Michelsen (2013-2016)

Evaluation commisions for master and PhD degrees

Has been member of 51 committees for evaluation of final master exams (including evaluation of theses). Has been member of 10 PhD evaluation committees, 4 as coordinator at University of Tromsø, and 6 as an opponent in committees at University of Bergen and University of Aarhus.

 

Arbeider i CRIStin

  • Ofstad, Lise Helen; Angus, Chevonne; Pedersen, Torstein; Steingrund, Petur. Age and growth of anglerfish (Lophius piscatorius) in Faroese waters. Fisheries Research 2013; Volum 139. ISSN 0165-7836.s 51 - 60.s doi: 10.1016/j.fishres.2012.05.011.
  • Ofstad, Lise Helen; Pedersen, Torstein; Steingrund, Petur. Maturation, reproduction and early life history of anglerfish Lophius piscatorius in Faroese waters. Annales societatis scientiarum Færoensis. Supplementum 2013; Volum 60. ISSN 0365-6772.s 114 - 133.
  • Fevolden, Svein-Erik; Westgaard, Jon-Ivar; Pedersen, Torstein; Præbel, Kim. Settling-depth vs. genotype and size vs. genotype correlations at the Pan I locus in 0-group Atlantic cod Gadus morhua. Marine Ecology Progress Series 2012; Volum 468. ISSN 0171-8630.s 267 - 278.s doi: 10.3354/meps09990.
  • Mikkelsen, Nina; Pedersen, Torstein. Invasive red king crab affects lumpsucker recruitment by egg consumption. (fulltekst) Marine Ecology Progress Series 2012; Volum 469. ISSN 0171-8630.s 87 - 99.s doi: 10.3354/meps09917.
  • Ramsvatn, Silje; Pedersen, Torstein. Ontogenetic niche changes in haddock Melanogrammus aeglefinus reflected by stable isotope signatures, delta C-13 and delta N-15. Marine Ecology Progress Series 2012; Volum 451. ISSN 0171-8630.s 175 - 185.s doi: 10.3354/meps09604.
  • Bugge, Julie; Barrett, Robert T; Pedersen, Torstein. Optimal foraging in chick-raising Common Guillemots (Uria aalge). Journal of Ornithology = Journal fur Ornithologie 2011; Volum 152 (2). ISSN 0021-8375.s 253 - 259.s doi: 10.1007/s10336-010-0578-9.
  • Barrett, Robert; Bugge, Julie; Pedersen, Torstein. No evidence of sex-specific differences in choice or size of fish caught for chicks or self-feeding among Common Guillemots Uria aalge. Seabird 2010; Volum 23. ISSN 0267-9310.s 7 - 13.
  • Pedersen, Ole Petter; Tande, Kurt Steinar; Pedersen, Torstein; Slagstad, Dag. Advection and retention as life trait modulators of capelin larvae-A case study from the Norwegian coast and the Barents Sea. Fisheries Research 2009; Volum 97 (3). ISSN 0165-7836.s 234 - 242.s doi: 10.1016/j.fishres.2009.02.008.
  • Pedersen, Ole Petter; Pedersen, Torstein; Tande, Kurt Steinar; Slagstad, Dag. Integrating spatial and temporal mortality from herring on capelin larvae: a study in the Barents Sea. ICES Journal of Marine Science 2009; Volum 66 (10). ISSN 1054-3139.s 2183 - 2194.
  • Morissette, Lyne; Pedersen, Torstein; Nilsen, Marianne. Comparing pristine and depleted ecosystems: The Sorfjord, Norway versus the Gulf of St. Lawrence, Canada. Effects of intense fisheries on marine ecosystems. Progress in Oceanography 2009; Volum 81 (1-4). ISSN 0079-6611.s 174 - 187.s doi: 10.1016/j.pocean.2009.04.013.
  • Hallfredsson, Elvar H.; Pedersen, Torstein. Effects of predation from juvenile herring (Clupea harengus) on mortality rates of capelin (Mallotus villosus) larvae. Canadian Journal of Fisheries and Aquatic Sciences 2009; Volum 66 (10). ISSN 0706-652X.s 1693 - 1706.s doi: 10.1139/F09-105.
  • Pedersen, Ole Petter; Pedersen, Torstein; Tande, Kurt Steinar; Slagstad, Dag. Integrating spatial and temporal mortality from herring on capelin larvae: a study in the Barents Sea. ICES Journal of Marine Science 2009; Volum 66 (10). ISSN 1054-3139.s 2183 - 2194.s doi: 10.1093/icesjms/fsp192.
  • Nilsen, marianne; Pedersen, Torstein; Nilssen, Einar Magnus; Fredriksen, Stein. Trophic studies in a high-latitude fjord ecosystem - a comparison of stable isotope analyses (delta 13C and delta 15N)and trophic-level estimates from a mass-balance model. Canadian Journal of Fisheries and Aquatic Sciences 2008; Volum 65 (12). ISSN 0706-652X.s 2791 - 2806.s doi: 10.1016/j.dsr2.2008.05.008.
  • Pedersen, Torstein; Fossheim, Maria. Diet of 0-group stages of capelin (Mallotus villosus), herring (Clupea harengus) and cod (Gadus morhua) during spring and summer in the Barents Sea. Marine Biology 2008; Volum 153. ISSN 0025-3162.s 1037 - 1046.s doi: 10.1007/s00227-007-0875-x.
  • Eilertsen, Karin; Barrett, Robert T; Pedersen, Torstein. Diet, growth and early survival of Atlantic Puffin (Fratercula arctica) chicks in North Norway. Waterbirds (De Leon Springs, Fla.) 2008; Volum 31. ISSN 1524-4695.s 107 - 114.
  • Pedersen, Torstein; Cuveliers, Els L.; Berg, Erik. Spatial scales of movement in northeast Atlantic coastal cod. Reviews in fisheries science 2008; Volum 16. ISSN 1064-1262.s 348 - 356.s doi: 10.1080/10641260701678462.
  • Pedersen, Torstein; Nilsen, Marianne; Nilssen, Einar Magnus; Berg, Erik; Reigstad, Marit. Trophic model of a lightly exploited cod-dominated ecosystem. Ecological Modelling 2008; Volum 214. ISSN 0304-3800.s 95 - 111.s doi: 10.1016/j.ecolmodel.2007.12.012.
  • Ivarjord, Trond; Pedersen, Torstein; Moksness, E. Effects of growth rates on the otolith increments deposition rate in capelin larvae (Mallotus villosus). Journal of Experimental Marine Biology and Ecology 2008; Volum 358 (2). ISSN 0022-0981.s 170 - 177.s doi: 10.1016/j.jembe.2008.02.011.
  • Hallfredsson, Elvar H.; Pedersen, Torstein. Effects of predation from pelagic 0-group cod (Gadus morhua) on mortality rates of capelin (Mallotus villosus) larvae in the Barents Sea. Canadian Journal of Fisheries and Aquatic Sciences 2007; Volum 64. ISSN 0706-652X.s 1710 - 1722.s doi: 10.1139/F07-137.
  • Hallfredsson, Elvar H.; Pedersen, Torstein; Præbel, Kim. Estimation of digestion rates for herring Clupea harengus L. feeding on fish larvae. Journal of Fish Biology 2007; Volum 70. ISSN 0022-1112.s 638 - 643.s doi: 10.1111/j.1095-8649.2007.01312.x.
  • Nilsen, Marianne; Pedersen, Torstein; Nilssen, Einar Magnus. Macrobenthic biomass, productivity (P/(B)over-bar) and production in a high-latitude ecosystem, North Norway. Marine Ecology Progress Series 2006; Volum 321. ISSN 0171-8630.s 67 - 77.
  • Godiksen, Jane; Hallfredsson, Elvar H.; Pedersen, Torstein. Effects of alternative prey on predation intensity from herring Clupea harengus and sandeel Ammodytes marinus on capelin Mallotus villosus larvae in the Barents Sea. Journal of Fish Biology 2006; Volum 69 (6). ISSN 0022-1112.s 1807 - 1823.s doi: 10.1111/j.1095-8649.2006.0.
  • Sivertsen, Steffen P.; Pedersen, Torstein; Lindstrøm, Ulf; Haug, Tore. Prey partitioning between cod (Gadus morhua) and minke whale (Balaenoptera acutorostrata) in the Barents Sea. Marine Biology Research 2006; Volum 2. ISSN 1745-1000.s 89 - 99.
  • Svenning, Martin; Borgstrøm, Reidar; Dehli, Tor Ola; Moen, Geir; Barrett, Robert T; Pedersen, Torstein; Vader, Wim. The impact of marine fish predation on Atlantic salmon smolts (Salmo salar) in the Tana estuary, North Norway, in the presence of an alternative prey, lesser sandeel (Ammodytes marinus). Fisheries Research 2005; Volum 76. ISSN 0165-7836.s 466 - 474.s doi: 10.1016/j.fishres.2005.06.015.
  • Svenning, Martin; Fagermo, Stein Erik; Barrett, Robert T.; Borgstrøm, Reidar; Vader, Wim; Pedersen, Torstein; Sandring, Stig. Goosander predation and its potential impact on Atlantic salmon smolts in the River Tana estuary, northern Norway. Journal of Fish Biology 2005; Volum 66. ISSN 0022-1112.s 924 - 937.s doi: 10.1111/j.0022-1112.2005.00638.x.
  • Svenning, Martin-A.; Fagermo, S.-E.; Barrett, Robert T; Borgstrom, R; Vader, Wim; Pedersen, Torstein; Sandring, S.. Goosander predation and its potential impact on Atlantic salmon smolts in the River Tana estuary, northern Norway. Journal of Fish Biology 2005; Volum 66. ISSN 0022-1112.s 924 - 937.
  • Mikkelsen, Nina; Pedersen, Torstein. How can the stock recruitment relationship of the Barents Sea capelin (Mallotus villosus) be improved by incorporating biotic and ablotic factors?. Polar Research 2004; Volum 23 (23). ISSN 0800-0395.s 19 - 26.
  • Luksenburg, J. A.; Pedersen, Torstein; Falk-Petersen, Inger-Britt. Reproduction of the shorthorn sculpin Myoxocephalus scorpius in northern Norway. Journal of Sea Research 2004; Volum 51. ISSN 1385-1101.s 157 - 166.
  • Luksenburg, Jolanda; Pedersen, Torstein. Sexual and geographical variation in life history parameters of the shorthorn sculpin Myoxocephalus scorpius.. Journal of Fish Biology 2003; Volum 61. ISSN 0022-1112.s 1453 - 1464.
  • Pedersen, Torstein; Pope, John. How may feeding data be integrated into a model for a Norwegian fjord population of cod (Gadus morhua L.)?. Scientia Marina 2003; Volum 67. ISSN 0214-8358.s 155 - 169.
  • Pedersen, Torstein; Pope, John. Sampling and a mortality model of a Norwegian fjord cod (Gadus morhua L.) population. Fisheries Research 2003; Volum 63. ISSN 0165-7836.s 1 - 20.
  • Larsen, Lars Henrik; Pedersen, Torstein. Mortality, growth and migration of released reared and wild cod (Gadus morhua L.) in Malangen, northern Norway. Sarsia 2002; Volum 87. ISSN 0036-4827.s 97 - 109.
  • Berg, Erik; Pedersen, Torstein. Variability in recruitment, growth and sexual maturity of coastal cod (Gadus morhua L.) in a fjord system in northern Norway.. Fisheries Research 2001; Volum 52 (3). ISSN 0165-7836.s 179 - 189.s doi: 10.1016/S0165-7836(00)00256-3.
  • Johansen, Roger; Barrett, Robert T; Pedersen, Torstein. Foraging strategies of Great Cormorants Phalacorcorax carbo carbo wintering north of the Arctic Circle.. Bird Study 2001; Volum 48. ISSN 0006-3657.s 59 - 67.
  • Skreslet, Stig; Kolbeinshavn, Arne Gunnar; Pedersen, Torstein. Migration, growth and survival in stocked and wild cod (Gadus morhua L.) in the Vestfjord region, north Norway. 1999 ISBN 0-85238-246-4.s 306 - 314.
  • Pedersen, Torstein; Jobling, Malcolm. Growth rates of large, sexually mature cod, Gadus morhua, in relation to condition and temperature during an annual cycle. Aquaculture 1989; Volum 81. ISSN 0044-8486.s 161 - 168.
  • Pedersen, Torstein; Lindstrøm, Ulf; Nilssen, Einar Magnus; Fuhrmann, Mona Maria; Ivarjord, Trond; Nilssen, Kjell Tormod; Ramasco, Virginie; Jørgensen, Lis Lindal; Sundet, Jan Henry; Sivertsen, Knut; Källgren, Emma; Michaelsen, Christer; Systad, Geir Helge; Svenning, Martin. Ecopath modelling of ecosystem structure of a subarctic norwegian fjord after a decline in the coastal cod (Gadus morhua) stock. Gadoid Fisheries, The Ecology and Management of Redbuilding 2013-10-15 - 2013-10-18 2013.
  • Michaelsen, Christer; Pedersen, Torstein; Ivarjord, Trond; Lindstrøm, Ulf. The role of macroalgae habitats as nursing grounds for juvenile coastal cod (Gadus morhua L.) in two Norwegian fjords. Gadoid Fisheries, The Ecology and Management of Rebuilding 2013-10-15 - 2013-10-18 2013.
  • Nilsen, Marianne; Pedersen, Torstein; Nilssen, Einar Magnus. Spatial distribution of secondary benthic invertebrate production in a north Norwegian fjord system. Arctic Frontiers 2013 Conference 2013-01-21 - 2013-01-25 2013.
  • Michaelsen, Christer; Pedersen, Torstein. Habitat choice of juvenile coastal cod : the role of macroalgae habitats for juvenile coastal cod (Gadus morhua L.) in Porsangerfjorden and Ullsfjorden in Northern Norway. (fulltekst) 2012.
  • Pedersen, Torstein; Ramsvatn, Silje; Nilssen, Einar Magnus; Nilsen, Marianne; Ivarjord, Trond; Maurstad, Anita; Kolsum, Ina; Systad, Geir Helge; Morissette, Lyne. Effekter av forskjellige fangstregimer på fangstutbytte og økosystemindikatorer i to kystøkosystemer undersøkt ved ECOPATH modellering. Seminar om "Blandingsfiske som reguleringsmodell" 2012-02-15 - 2012-02-15 2012.
  • Pedersen, Torstein; Nilssen, Einar Magnus; Ramsvatn, Silje; Ivarjord, Trond; Museæus, Fredrikke; Nilsen, Marianne; Morissette, Lyne; Maurstad, Anita; Fause, Håvard T.; Kolsum, Ina; Michaelsen, Christer; Systad, Geir Helge. Investigating coastal ecosystem structure and dynamics using Ecopath/Ecosim ecosystem models and stable isotope data. Havet og kysten forskerseminar 2012 2012-10-24 - 2012-10-24 2012.
  • Pedersen, Torstein. Production patterns of estuarine ecosystems investigated by mass balance modelling. 50th ECSA Conference: Today's science for tomorrow's Management 2012-06-03 - 2012-06-07 2012.
  • Pedersen, Torstein; Kolsum, Ina. Diett og posisjoner i næringsnettet til torskefisk i Ullsfjord. (fulltekst) 2011.
  • Pedersen, Torstein; Ramsvatn, Silje; Nilssen, Einar Magnus; Nilsen, Marianne; Ivarjord, Trond; Maurstad, Anita; Kolsum, Ina; Systad, Geir Helge; Morissette, Lyne. Investigating effects of various harvest regimes on fishery yield and ecosystem health indicators of two coastal ecosystems using ECOPATH modelling. The 2nd International Symposium on Integrated Coastal Zone Management 2011-07-03 - 2011-07-07 2011.
  • Pedersen, Torstein. Latitudinal patterns in estuarine ecosystem characteristics investigated by mass balance modelling. ECClima, Estuaries in a Changing Climate 2011-04-05 - 2011-04-08 2011.
  • Fuhrmann, Mona Maria; Nilssen, Einar Magnus; Pedersen, Torstein; Jørgensen, Lis Lindal. Impact of the invasive red king crab (Paralithodes camtschaticus) on soft bottom infauna, Porsangerfjord, Norway. 7th International Conference on Marine Bioinvasions 2011-08-23 - 2011-08-25 2011.
  • Ramsvatn, Silje; Pedersen, Torstein; Nilsen, Marianne. Comparing ecosystem structure, trophic role and niche of functional groups and key species in northern ecosystems using stable isotope data. Arctic Frontiers, Arctic Tipping Points 2011-01-23 - 2011-01-29 2011.
  • Ramsvatn, Silje; Pedersen, Torstein. Trophic interactions and ontogenetic niche change reflected by stable isotope signatures, δ13C and δ15N, in predatory fish in a northern estuary. ECClima, Estuaries in a Changing Climate 2011-04-05 - 2011-04-08 2011.
  • Morissette, Lyne; Pedersen, Torstein; Ramsvatn, Silje; Nilssen, Einar Magnus; Nilsen, Marianne. Way up north, global changes but specific responses. A trans-Atlantic, cross-system analysis of how fishing and climate might alter the structure and function of marine ecosystems. The International Polar Year Oslo Science Conference - 8-12 June 2010 2010-06-06 - 2012-06-12 2010.
  • Ramsvatn, Silje; Pedersen, Torstein; Nilssen, Einar Magnus. Comparing trophic structure and diversity in northern ecosystems using stable isotope data. ICES Annual Science Conference 2010-09-20 - 2010-09-24 2010.
  • Pedersen, Torstein; Nilssen, Einar Magnus; Nilsen, Marianne; Morissette, Lyne; Maurstad, Anita. Structure of two high latitude Norwegian fjord ecosystems analysed using Ecopath. 2009; Volum 17 (3). ISSN 1198-6727.
  • Pedersen, Torstein; Nilssen, Einar Magnus; Nilsen, Marianne; Morissette, Lyne; Maurstad, Anita; Ramsvatn, Silje. Analysing structure and dynamics of northern coastal ecosystems using Ecopath/Ecosim models. Havet og kysten konferansen 2009 2009-04-28 - 2009-04-29 2009.
  • Pedersen, Torstein; Nilssen, Einar Magnus; Nilsen, Marianne; Morisette, Lyne; Maurstad, Anita; Ramsvatn, Silje. Structure of two high latitude Norwegian fjord ecosystems analysed using Ecopath. ECOPATH Twenty-five years 2009-08-30 - 2012-09-01 2009.
  • Pedersen, Torstein; Tande, Kurt Steinar; Pope, John. Introduction to the Proceedings of the ECONORTH Symposium on Ecosystem Dynamics in the Norwegian and Barents Sea. Deep-sea research. Part II, Topical studies in oceanography 2009; Volum 56 (21-22). ISSN 0967-0645.s 1893 - 1894.s doi: 10.1016/j.dsr2.2008.11.003.
  • Wickler, Stephen; Pedersen, Torstein; Amundsen, Colin. Hva forteller torskens øresteiner om fisket i middelalderen og nå?. Ottar 2009 (274). ISSN 0030-6703.s 23 - 30.
  • Godiksen, Jane; Hallfredsson, Elvar H.; Pedersen, Torstein. Effects of prey size and type on predation intensity from herring (Clupea harengus) and sand eel (Ammodytes tobianus) on capelin (Mallotus villosus) larvae in the Barents Sea.. Symposium "The Influence of Climate Change on North Atlantic Fish Stocks" 2004-05-19 - 2004-05-21 2004.
  • Pedersen, Torstein. Life history and feeding of capelin larvae compared to cod and herring – consequences for linkage to climatic variability.. Symposium on "The Influence of Climate Change on North Atlantic Fish Stocks" 2004-05-19 - 2004-05-21 2004.
  • Pedersen, Torstein; Tande, Kurt Steinar; Fevolden, Svein Erik; Christiansen, Jørgen Schou. Capelin and herring in the Barents Sea - coexistence or exclusion. ICES 2004-09-22 - 2004.
  • Jakobsen, Ronny; Pedersen, Torstein; Moksness, Erlend. Growth rates and age distribution of capelin (Mallotus villosus) larvae in the Barents Sea investigated by otolith increment analysis.. 2004.
  • Ivarjord, Trond; Pedersen, Torstein; Moksness, Erlend. Do capelin larvae deposit daily increments in their otoliths?. 2004.
  • Hallfredsson, Elvar H.; Pedersen, Torstein. Effects of predation from juvenile herring on mortality rates of capelin larvae in the Barents Sea.. 2004.
  • Andersen, Kjell Roger; Hallfredsson, Elvar H.; Pedersen, Torstein. Prey recognition of capelin (Mallotus villosus) larvae in juvenile cod (Gadus morhua L.) stomachs.. 2004.
  • Hallfredsson, Elvar H.; Godiksen, Jane Amtoft; Konradsson, Atli; Pedersen, Torstein. Predation from juvenile herring and 0-group cod on capelin larvae in the Barents Sea.. Norske Havforskeres Forening. Annual meeting. 2003-10-08 - 2003-10-12 2003.
  • Skreslet, Stig; Pedersen, Torstein. Kystsonens økologi. 2000.
  • Aase, Hans; Misund, Ole Arve; Pedersen, Torstein. Predation of oyster larvae by Aurelia aurita in a Norwegian oyster pond.. 1986 (F:21).



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