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Details of Dr. Stein Fredriksen   


Gender male
Job title Professor
Department Department of Biosciences
University of Oslo, Department of Biosciences ( UIO)
Blindernvn. 31 Oslo 0316
PO Box 1066 Blindern
Tel +47 2285 4558
Fax +47 2285 4438
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Degree PhD
Job type Teaching/Education , Research
Research Area(s) Biological Oceanography, Marine Ecology , Biological Oceanography, Marine Ecology
Research Activities Culture and field studies of the Gelidiales (Rkodophyta), Autecology and general ecology in Laminaria hyperborea kelp forest. Algal systematics and ecology. Biodiversity in seagrass systems. Algae in the Arctic
Research Region 14, 2, 3, 36
Skills/Expertise Ecology, systematics of benthic marine algae and seagrasses. Scientific diver
PUBLICATIONS (as reported by Dr. Stein FREDRIKSEN)

1. Fredriksen, S. & J. Rueness 1989. Culture studies of Gelidium latifolium (Grev.)Born. et Thur. (Rhodophyta) from Norway. Growth and nitrogen storage in response to varying photon flux density, temperature and nitrogen availability. Botanica Marina 32: 539-546. 2. Rueness, J. & S. Fredriksen 1989. Field and culture studies of Gelidium latifolium (Grev.)Born. et Thur. (Rhodophyta) from Norway. Sarsia 74:177-185. 3. Fredriksen, S., S.M. Boo & J. Rueness 1990. Photoperiodism and life history of Psilothallia dentata (Ok.)Kylin (Ceramiaceae, Rhodophyta). Japanese journal of Phycology. 38: 43-49. 4. Fredriksen, S. & J. Rueness 1990. Culture studies in Pterocladia melaniodea (Schousb.) comb. nov. (Gelidiales, Rhodophyta). Phycologia. 29:182-190. 5. Rueness, J. & S. Fredriksen 1990. Field and culture studies of species of Gelidium (Gelidiales, Rhodophyta) from their northern limit of distribution in Europe. Hydrobiologia. 204/205:419-424. 6. Rueness, J. & S. Fredriksen 1991. An assessment of possible pollution effects on the benthic algae of the outer Oslofjord, Norway. Oebalia 17: 223-235 7. Boo, S. M., S. Fredriksen, J, Rueness & I. K. Lee 1991. Field and culture studies on life history of Campylaephora crassa (Okamura)Nakamura (Ceramiaceae; Rhodophyta). Botanica Marina 34: 437-445. 8. Fredriksen S., J.M. Rico & J. Rueness 1993. Comparison of Gelidium latifolium (Grev.) Born. et Thur.(Gelidiales, Rhodophyta) isolates from Spain and Norway. Journal of Applied Phycology 5: 117-122. 9. Sjøtun K., S. Fredriksen, T. E. Lein, J. Rueness & K. Sivertsen 1993. Population studies of Laminaria hyperborea from its northern range of distribution in Norway. Hydrobiologia 260/261: 215-221. 10. Fredriksen S. 1994. Spore-shedding in Gelidium pusillum (Gelidiales, Rhodophyta), with some observations on a morphological mutant. Cryptogamie, Algologie. 15: 165-173. 11. Fredriksen S., M.D. Guiry & J. Rueness 1994. Morphological and biosystematic studies of Gelidium pusillum and G. pulchellum (Gelidiaceae, Rhodophyta) from Europe. Phycologia 33:462-470. 12. Fredriksen S., A.C. Sørlie & A.-B. Kjøsterud 1995. Titanoderma pustulatum (Lamouroux) Nägli and . Lithophyllum crouanii Foslie (Corallinales, Rhodophyta): Two common epiphytes on Laminaria hyperborea (Gunnerus) Foslie stipes in Norway. Sarsia 80:41-46. 13. Fredriksen S., K. Sjøtun, T.E. Lein & J. Rueness 1995. Spore dispersal in Laminaria hyperborea (Laminariales, Phaeophyceae). Sarsia 80:47-54. 14. Fredriksen S., K. Sjøtun, T.E. Lein & J. Rueness 1995. Reply to the comment by N.T. Hagen (1995). Sarsia 80:241 15. Sjøtun K. & S. Fredriksen. 1995. Growth allocation in Laminaria hyperborea (Laminariales, Phaeophyceae) in relation to age and wave exposure. Marine Ecology Progress Series 126:213-222. 16. Sjøtun K., S. Fredriksen, J. Rueness & T.E. Lein 1995. Ecological studies of the kelp Laminaria hyperborea (Gunnerus)Foslie in Norway. In: Ecology of fjords and coastal waters (eds. H.R. Skjoldal, C. Hopkins, K.E. Erikstad & H.P. Leinaas). pp. 525-536. 17. Sjøtun K., S. Fredriksen & J. Rueness 1996. Seasonal growth and carbon and nitrogen content in canopy and first-year plants of Laminaria hyperborea (Laminariales, Phaeophyceae). Phycologia 35:1-8. 18. Rico J.M. & S. Fredriksen 1996. Effects of environmental factors on net photosynthesis and growth of intertidal species of the genus Gelidium (Gelidiaceae, rhodophyta) in northern Spain. Scientia Marina 60:265-273. 19. Christie H., S. Fredriksen & E. Rinde 1998. Regrowth of kelp and colonization of epiphyte and fauna community after kelp trawling at the coast of Norway. Hydrobiologia 375/376:49-58. 20. Rueness J. & S. Fredriksen 1998. Intraspecific reproductive variation in Gelidium pusillum (Stackhouse) Le Jolis (Gelidiales, Rhodophyta) from Europe. Journal of Applied Phycology 10:253-260 21. Sjøtun K., S. Fredriksen & J. Rueness 1998. The effect of canopy biomass and wave exposure on growth in Laminaria hyperborea (Laminariaceae: Phaeophyta). European Journal of Phycology 33:337-343. 22. Raven J.A., A.M. Johnston, J.E. Kübler, R. Korb, S.G. McInroy, L.L. Handley, C.M. Scrimgeour, D.I. Walker, J. Beardall, M. Vanderklift, S. Fredriksen & K.H. Dunton 2002. Mechanistic interpretation of carbon isotope discrimination by marine macroalgae and seagrasses. Functional Plant Biology 29:355-378. 23. Raven J.A., A.M. Johnston, J.E. Kübler, R. Korb, S.G. McInroy, L.L. Handley, C.M. Scrimgeour, D.I. Walker, J. Beardall, M.N. Clayton, M. Vanderklift, S. Fredriksen & K.H. Dunton. 2002. Seaweeds in cold seas: evolution and carbon acquisition. Annals of Botany 90:525-536. 24. Fredriksen S. & H. Christie 2003. Zostera marina (Angiospermae) and Fucus serratus (Phaeophyceae) as habitat for flora and fauna ? seasonal and local variation. Proceedings 17th International Seaweed Symposium, Cape Town, South Africa. pp 357-364 25. Norderhaug K.M., S. Fredriksen & K. Nygaard 2003. The trophic importance of Laminaria hyperborea to kelp forest consumers and the importance of bacterial degradation on food value. Marine Ecology Progress Series 255:135-144 26. Bjærke M.R. & S. Fredriksen 2003. Epiphytes on the invasive species Sargassum muticum at Verdens Ende, South Norway. Sarsia 88:353-364. 27. Fredriksen S. 2003 Food web studies in a Norwegian kelp forest based on stable isotope (?13C and ?15N) analysis. Marine Ecology Progress Series 260:71-81. 28. Fredriksen S., H. Christie & C. Boström. 2004. Deterioration of eelgrass (Zostera marina L.) by destructive grazing by the gastropod Rissoa membranacea (J. Adams) Sarsia 89:218-222. 29. Abdullah M.I. & S. Fredriksen. 2004. Production, Respiration and Exudation of Dissolve Organic Matter by the kelp Laminaria hyperborea (Gunnerus) Foslie along the west coast.of Norway. Journal of the Marine Biollogical Association of the United Kingdom. 84:887-894 30. Fredriksen S,., H. Christie & B.A. Sæthre 2005. Species richness in macroalgae and macrofauna assemblages on Fucus serratus L. (Phaeophyceae) and Zostera marina L. (Angiospermae) in Skagerrak, Norway. Marine Biology Research 1:2-19. 31. Norderhaug K.M., H. Christie, J.H. Fosså & S. Fredriksen. 2005. Fish-macrofauna interactions in a kelp (Laminaria hyperborea) forest. Journal of the Marine Biological Association of the United Kingdom. 85:1279-1286. 32. Norderhaug K.M., K. Nygaard & S. Fredriksen. 2006. Importance of phlorotannin content and C:N ratio of Laminaria hyperborea in determining its palatability as food for consumers. Marine Biology Research 2:367 ? 371. 33. Norderhaug K.M., H. Christie & S. Fredriksen. 2007. Is habitat size an important factor for faunal abundance on kelp (Laminaria hyperborea)? Journal of Sea Research 58:120-124. 34. Mutchler T., K.H. Dunton, A. Townsend-Small, S. Fredriksen & M.K. Rasser. 2007. Isotopic and elemental indicators of nutrient sources and status of coastal habitats in the Caribbean Sea, Yucatan Peninsula, Mexico. Estuarin, Coastal and Shelf Science 74:449-457. 35. Nilsen M., T. Pedersen, E.M. Nilsen & S. Fredriksen 2008. Trophic studies in a high-latitude fjord ecosystem ? a comparison of stable isotope analyses (?13C and ?15N) and trophic-level estimates from a mass-balance model. Canadian Journal of Fisheries and Aquatic Sciences 65:2791-2806. 36. Christie H., K.M. Norderhaug & S. Fredriksen 2009. Macrophytes as habitat for fauna. Marine Ecology Progress Series. 396:221-233 37. Fredriksen S., A. de Backer, C. Boström & H. Christie 2010. Infauna from Zostera marina (L.) meadows in Norway. Differences in vegetated and unvegetated areas. Marine Biology Research 6:189-200. 38. Mutchler T., R.F. Mooney, S. Wallace, L. Podsim, S. Fredriksen & K. Dunton. 2010. Origins and fate of inorganic-nitrogen from land to coastal ocean on the Yucatan Peninsula, Mexico. In: Kennish M.J. & H.W. Paerl (eds) Coastal lagoons. Critical habitats of environmental change. S. 283-305. CRC Press. Taylor & Francis Group. USA. 39. Andersen G. S., H. Steen, H. Christie, S. Fredriksen & F. Moy 2011. Seasonal patterns of sporophyte growth, fertility, fouling and mortality of Saccharina latissima in Skagerrak, Norway. Implications for forest recovery. Journal of Marine Biology (Open access journal). Volume 2011. doi:10.1155/2011/690375 40. Fredriksen S. & M. Røst Kile 2012. The algal vegetation in the outer part of Isfjorden, Spitsbergen: A revisit of Per Svendsens sites after 50 years. Polar Research 31, 17538, DOI: 10.3402/polar.v31i0.17538 41. Pedersen MF, Nejrup LB, Fredriksen S, Christie H & KM Norderhaug 2012. Effects of wave exposure on population structure, demography, biomass and productivity of the kelp Laminaria hyperborea. Marine Ecology Progress Series 451:45-60.

Group(s): NORDIR
Created: 1999-05-01 Last Updated: 2016-06-16 by Stein FREDRIKSEN