Vitenskapelig artikkel

• Folkvord, Arild; Koedijk, Roland; Grahl-Nielsen, Otto et al. (2018). You are what you eat? Differences in lipid composition of cod larvae reared on natural zooplankton and enriched rotifers. (ekstern lenke)
• Radnaeva, Larisa D.; Popov, Dmitry V.; Grahl-Nielsen, Otto et al. (2017). Fatty acid composition in the white muscle of Cottoidei fishes of Lake Baikal reflects their habitat depth. (ekstern lenke)
• Joensen, Horaldur; Grahl-Nielsen, Otto (2014). Distinction among North Atlantic cod Gadus morhua stocks by tissue fatty acid profiles. (ekstern lenke)
• Jacobsen, Anita; Grahl-Nielsen, Otto; Magnesen, Thorolf (2012). Effects of reduced diameter of bag cultures on content of essential fatty acids and cell density in a continuous algal production system. (ekstern lenke)
• Olsen, Siri Aaserud; Ervik, Arne S; Grahl-Nielsen, Otto (2012). Tracing fish farm waste in the northern shrimp Pandalus borealis (Kroyer, 1838) using lipid biomarkers. (ekstern lenke)
• Grahl-Nielsen, Otto; Averina, E.; Pronin, Nikolai et al. (2011). Fatty acid profiles in different fish species in Lake Baikal. (ekstern lenke)
• Grahl-Nielsen, Otto; Haug, Tore; Lindstrøm, Ulf et al. (2011). Fatty acids in harp seal blubber do not necessarily reflect their diet. (ekstern lenke)
• Averina, E.S.; Grahl-Nielsen, Otto; Bazarsadueva, S.V. et al. (2011). Transformation through the food chain of Lake Baikal hydrobionts fatty acids. (ekstern lenke)
• Jacobsen, Anita; Grahl-Nielsen, Otto; Magnesen, Thorolf (2011). Effects of reduced diameter of bag cultures on content of essential fatty ascids and cell density in a continous algal production system. (ekstern lenke)
• Kwetegyeka, Justus; Masa, J; Kiremire, Bernard T et al. (2011). Fatty acids of polar lipids in heart tissue are good taxonomic markers for tropical African freshwater fish. (ekstern lenke)
• Minzangi, K; Kaaya, AN; Kansiime, F et al. (2011). Fatty acid composition of seed oils from selected wild plants of Kahuzi-Biega National Park and surroundings, Democratic Republic of Congo. (ekstern lenke)
• Grahl-Nielsen, Otto; Glover, Kevin Alan (2010). Fatty acids in fish scales. (ekstern lenke)
• Skoglund, Eli; Lydersen, Christian; Grahl-Nielsen, Otto et al. (2010). Fatty acid composition of the blubber and dermis of adult male Atlantic walruses (Odobenus rosmarus rosmarus) in Svalbard, and their potential prey. (ekstern lenke)
• Grahl-Nielsen, Otto; Krakstad, Jens-Otto; Nøttestad, Leif et al. (2010). Dusky dolphins Lagenorhynchus obscurus and Cape fur seals Arctocephalus pusillus pusillus: fatty acid composition of their blubber and prey species. (ekstern lenke)
• Grahl-Nielsen, Otto; Jacobsen, Anita; Christophersen, Gyda et al. (2010). Fatty acid composition in adductor muscle of juvenile scallops (Pecten maximus) from five Norwegian populations reared in the same environment. (ekstern lenke)
• Jacobsen, Anita; Grahl-Nielsen, Otto; Magnesen, Thorolf (2010). Does a large-scale continuous algal production system provide a stable supply of fatty acids to bivalve hatcheries?. (ekstern lenke)
• Olsen, Siri Aaserud; Ervik, Arne; Grahl-Nielsen, Otto (2009). Deep-water shrimp (Pandalus borealis, Kroyer 1838) as indicator organism for fish-farm waste. (ekstern lenke)
• Olsen, Bernt Rydland; Grahl-Nielsen, Otto; Schander, Christoffer (2009). Population study of Astarte sulcata, da Costa, 1778, (Mollusca, Bivalvia) from two Norwegian fjords based on the fatty acid composition of the adductor muscle. (ekstern lenke)
• Strandberg, Ursula; Käkelä, Anne; Lydersen, Christian et al. (2008). Stratification, composition, and function of marine mammal blubber: The ecology of fatty acids in marine mammals. (ekstern lenke)
• Kwetegyeka, Justus; Mpango, George; Grahl-Nielsen, Otto (2008). Variation in Fatty Acid Composition in Muscle and Heart Tissues among Species and Populations of Tropical Fish in Lakes Victoria and Kyoga. (ekstern lenke)
• Kwetegyeka, Justus; Mpango, George; Grahl-Nielsen, Otto (2006). Fatty acid composition of muscle and heart tissue of Nile perch, Lates niloticus, and Nile tilapia, Oreochromis niloticus, from various populations in Lakes Victoria and Kioga, Uganda. (ekstern lenke)
• Meier, Sonnich; Mjøs, Svein Are; Joensen, Horaldur et al. (2006). Validation of a one-step extraction/methylation method for determination of fatty acids and cholesterol in marine tissues. (ekstern lenke)
• Mjøs, Svein Are; Meier, Sonnich; Grahl-Nielsen, Otto (2006). Geometrical isomerisation of double bonds in acid-catalysed preparation of fatty acid methyl esters. (ekstern lenke)
• Mjøs, Svein Are; Grahl-Nielsen, Otto (2006). Prediction of gas chromatographic retention of polyunsaturated fatty acid methyl esters. (ekstern lenke)
• Mjøs, Svein Are; Meier, Sonnich; Grahl-Nielsen, Otto (2006). Geometrical isomerisation of double bonds in acid catalysed preparation of fatty acid methyl esters. (ekstern lenke)
• Troedsson, Christofer; Grahl-Nielsen, Otto; Thompson, Eric (2005). Variable fatty acid composition of the pelagic appendicularian Oikopleura dioica in response to dietary quality and quantity. (ekstern lenke)
• Grahl-Nielsen, Otto; Halvorsen, Ann-Kristin; Bodoev, Nikolai et al. (2005). Fatty acid composition of blubber of the Baikal seal Phoca sibirica and its marine relative, the ringed seal P. hispida. (ekstern lenke)
• Birkeland, Annette; Kovacs, Kit M.; Lydersen, Christian et al. (2005). Transfer of fatty acids from mothers to their calves during lactation in white whales Delphinapterus leucas. (ekstern lenke)
• Andersen, Signe; Lydersen, Christian; Grahl-Nielsen, Otto et al. (2004). Autumn diet of harbour seals (Phoca vitulina) at Prins Karls Forland, Svalbard, assessed via scat and fatty-acid analyses. (ekstern lenke)
• Joensen, Horaldur; Grahl-Nielsen, Otto (2004). Stock structure of Sebastes mentella in the North Atlantic revealed by chemometry of the fatty acid profile in heart tissue. (ekstern lenke)
• Grahl-Nielsen, Otto; Andersen, Magne; Andersen, M et al. (2004). Fatty acid composition of the adipose tissue of polar bears and of their prey: ringed seals, bearded seals and harp seals. (ekstern lenke)
• Birkely, Sten-Richard; Grahl-Nielsen, Otto; Gulliksen, Bjørn (2003). Temporal variations and anatomical distributions of fatty acids in the bivalve Mya truncata, L. 1758, from Isfjorden, Spitsbergen. (ekstern lenke)
• Olsen, Erik Joel Steinar; Grahl-Nielsen, Otto (2003). Blubber fatty acids of minke whales: stratification, population identification and relation to diet. (ekstern lenke)
• Grahl-Nielsen, Otto; Andersen, Magnus; Derocher, Andrew et al. (2003). Fatty acid composition of the adipose tissue of polar bears and their prey: ringed seals, bearded seals and harp seals. (ekstern lenke)
• Joensen, Horaldur; Grahl-Nielsen, Otto (2001). The redfish species Sebastes viviparus, Sebastes marinus and Sebastes mentella have different composition of their tissue fatty acids. (ekstern lenke)
• Julshamn, K.; Grahl-Nielsen, Otto (2000). Trace element levels in harp seal (Pagophilus groenlandicus) and hooded seal (Crystophora cristata) from the Greenland Sea. A multivariate approach. (ekstern lenke)
• Joensen, Horaldur; Steingrund, P.; Fjallstein, I. et al. (2000). Discrimination between two reared stocks of cod (Gadus morhua) from Faroe Islands by chemometry of the fatty acid composition in the heart tissue. (ekstern lenke)
• Grahl-Nielsen, Otto; Hammill, M.O.; Lydersen, C. et al. (2000). Transfer of fatty acids from female seal bluber via milk to pup blubber. (ekstern lenke)
• Joensen, Horaldur; Grahl-Nielsen, Otto (2000). Discrimination of Sebastes viviparus, S. marinus and S. mentella from Faroe Islands by chemometry of the fatty acid profile in heart and gill tissues and in the skull oil. (ekstern lenke)
• Johnsen, R.I.; Grahl-Nielsen, Otto; Roem, A. (2000). Relative absorption of fatty acids by Atlantic salmon Salmo salar from different diets, as evaluated by multivariate statistics. (ekstern lenke)
• Julshamn, Kåre; Grahl-Nielsen, Otto (1996). Distribution of trace elements from industrial discharges in the Hardangerfjord, Norway. A multivariate data analysis of saithe, flounder and blue mussel as sentinel organisms. (ekstern lenke)
• Folkvord, Arild; Haaland, Inger Margrethe; Grahl-Nielsen, Otto et al. (1996). Fatty acid composition of herring (Clupea harengus L.) larvae off western Norway. (ekstern lenke)
• Slimestad, R.; Gjelsvik, S.; Grahl-Nielsen, Otto (1995). Detection of effects of ozone on birch, Betula pendula Roth., by chemometrical evaluation of concentrations of lipid components in leaves. (ekstern lenke)
• Grahl-Nielsen, Otto; Mjaavatten, Olav; Tvedt, E. (1993). Distinguishing between populations of the harp seal Pagophilus groenlandicus (Erxleben 1777), by chemometry of the fatty acid profile in selected tissues. (ekstern lenke)
• Cooney, J. J.; Doolittle, M. M.; Grahl-Nielsen, Otto et al. (1993). Fatty acids in marine fungi. (ekstern lenke)
• Johnsen, R. I.; Grahl-Nielsen, Otto; Lunestad, B. T. (1993). Environmental distribution of organic waste from a marine fish farm. (ekstern lenke)
• Barnung, Trygg Normann; Grahl-Nielsen, Otto (1989). DETERMINATION OF BENZENES AND NAPHTHALENES IN WATER BY PURGE AND TRAP ISOLATION AND CAPPILLARY COLUMN CHROMATOGRAPHY. (ekstern lenke)
• Barnung, Trygg Normann; Grahl-Nielsen, Otto (1987). The fatty acid profile in cod (Gadus morhua L.) eggs and larvae. Developmental variations and responses to oil pollution. (ekstern lenke)
• Grahl-Nielsen, Otto; Barnung, Trygg Normann (1985). Variations in the Fatty Acid Profile of Marine Animals Caused by Environmental and Developmental Changes. (ekstern lenke)

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

• Rosenbaum, Paul-Erik Lillholm; Mikalsen, Øyvind; Grahl-Nielsen, Otto (2010). The learning effect of using a blended learning design in K12 science teaching. (ekstern lenke)
• Grahl-Nielsen, Otto; Aarflot, Asbjørn (2004). Kjemi på nett. (ekstern lenke)
• Båmstedt, Ulf; Fyhn, Hans Jørgen; Martinussen, Monica Bente et al. (2004). Seasonal distribution, diversity and biochemical composition of appendicularians in Norwegian fjords. (ekstern lenke)
• Grahl-Nielsen, Otto (2004). Fatty acid profiles as natural marks for stock identification. (ekstern lenke)
• Øvstedal, Dag Olav; Fossen, Torgils; Grahl-Nielsen, Otto et al. (2000). Beskrivelse av den trolig eldste norske påskeliljekultivar, basert på kjemiske, morfologiske og cytologiske undersøkelser. (ekstern lenke)

Leserinnlegg

• Grahl-Nielsen, Otto (2009). Exploration of the foraging ecology of marine mammals by way of the fatty acid composition of their blubber. (ekstern lenke)
• Grahl-Nielsen, Otto; Andersen, Magnus; Derocher, Andrew E. et al. (2004). Reply to Comment on Grahl-Nielsen et al. (2003): sampling, data treatment and predictions in investigations on fatty acids in marine mammals. (ekstern lenke)

Vitenskapelig foredrag

• Grahl-Nielsen, Otto; Christophersen, Gyda; Jacobsen, Anita et al. (2008). Identification of Pecten maximus populations in Norway by muscle fatty acid profiles. (ekstern lenke)
• Grahl-Nielsen, Otto (2004). Fatty acid composition of the blubber of the Baikal seal (Phoca Sibirica) and in the blubber of its marine relative, the ringed seal (Phoca hispida). (ekstern lenke)
• Grahl-Nielsen, Otto; Halvorsen, Ann-Kristin (2004). Stratification of the blubber of marine mammals. (ekstern lenke)
• Grahl-Nielsen, Otto (2004). Fatty acid profiles as natural marks for stock identification. (ekstern lenke)
• Grahl-Nielsen, Otto (2002). Taxonomic and nutritional studies on marine fish and mammals by determination of tissue fatty acid composition. (ekstern lenke)
• Grahl-Nielsen, Otto (2002). Chemometric determination of fatty acids inmarine organisms by high resolution gas chromatography followed by multivariate statistics. (ekstern lenke)
• Grahl-Nielsen, Otto (2002). Eksempler på akvakulturelle problemer som er løst ved hjelp av kromatografiske metoder. (ekstern lenke)
• Halvorsen, Ann-Kristin; Derocher, Andrew; Andersen, Magnus et al. (2002). Fettsyresammensetningen i spekket til isbjørn. (ekstern lenke)
• Grahl-Nielsen, Otto (2001). Nettforelesninger i generell kjemi. (ekstern lenke)
• Grahl-Nielsen, Otto (2001). Blubber fatty acids in marine mammals. (ekstern lenke)
• Grahl-Nielsen, Otto (2001). Summary of factors that could potentially confound the interpretation of fatty acid composition and a summary of laboratory and field studies dealing with fatty aqcid composition analysis. (ekstern lenke)
• Olsen, Erik Joel Steinar; Grahl-Nielsen, Otto (2001). Spatial and temporal trends in blubber fatty acids of Northeastern Atlantic. (ekstern lenke)
• Grahl-Nielsen, Otto (2001). Nettbasert kjemiundervisning. Erfaringer og pedagogiske refleksjoner. (ekstern lenke)
• Grahl-Nielsen, Otto (2001). Taxonomic and dietary information from the fatty acid composition of the blubber of marine mammals. (ekstern lenke)
• Furmanek, Tomasz; Grahl-Nielsen, Otto (2000). Lynkurs i Flash. (ekstern lenke)
• Furmanek, Tomasz; Grahl-Nielsen, Otto (2000). Nettkollokvering og orakeltjeneste. (ekstern lenke)
• Grahl-Nielsen, Otto (2000). Nettforelesninger i generell kjemi. (ekstern lenke)
• Grahl-Nielsen, Otto (2000). Informasjons- og kommunikasjonsteknologi (IKT) i undervisning og veiledning. (ekstern lenke)
• Grahl-Nielsen, Otto (1999). Analytiske utfordringer ved bestemmelse av hormonhermende miljøgifter. (ekstern lenke)
• Grahl-Nielsen, Otto (1998). Bestandsidentifikasjon ved hjelp av fettsyreprofiler. (ekstern lenke)
• Joensen, Horaldur; Grahl-Nielsen, Otto (1998). Taksonomi vha fettsyreprofiler. (ekstern lenke)
• Bratteteig, Svein; Grahl-Nielsen, Otto (1998). Sildelarvens første levedager. (ekstern lenke)
• Bratteteig, Svein; Grahl-Nielsen, Otto (1998). Sildelarvens første levedager. (ekstern lenke)
• Grahl-Nielsen, Otto (1998). Sigevann fra avfallsdeponier og produsert vann fra oljeplattformer. (ekstern lenke)
• Abelseth, Kari Helene; Sørland, Lindy; Grahl-Nielsen, Otto (1998). Endring av fettsyresammensetningen ved oksidasjon av marine oljer. (ekstern lenke)
• Fremmersvik, Gro; Løvseth, Eva Kristin; Grahl-Nielsen, Otto (1998). Fenoler i sigevann fra 10 avfallsdeponier i Hordaland. (ekstern lenke)
• Løvseth, Eva Kristin; Fremmersvik, Gro; Grahl-Nielsen, Otto (1998). Analyse av flyktige komponenter i sigevann fra 10 avfallsdeponier i Hordaland. (ekstern lenke)
• Aas, Petter; Grahl-Nielsen, Otto; Holmsen, Holm A (1998). Derivatisering av fosfolipider og HPLC-analyse av molekylformer av utvalgte fosfolipider. (ekstern lenke)
• Legreid, Geir; Grahl-Nielsen, Otto (1998). Oljefilm på overflaten som følge av utslipp fra produksjonsplattformer. (ekstern lenke)
• Grahl-Nielsen, Otto; Lygre, Terje (1998). Problemer med presisjonen ved GC-analyse av kompliserte blandinger. (ekstern lenke)
• Sørland, Lindy; Abelseth, Kari Helene; Grahl-Nielsen, Otto (1998). Flyktige forbindelser som dannes ved oksidasjon av marine oljer. (ekstern lenke)
• Grahl-Nielsen, Otto (1997). Når analyseresultatene behandles med flervariabel statistikk vil utbyttet av miljøundersøkelsene bli mangedoblet. (ekstern lenke)
• Grahl-Nielsen, Otto (1997). Lipider hos Mya truncata på Svalbard oljeinstellasjoner på norsk sokkel. (ekstern lenke)
• Grahl-Nielsen, Otto (1997). Rasjonaliseringen av den kjemiske overvåkningen rundt oljeinstellasjoner på norsk sokkel. (ekstern lenke)

Poster

• Skoglund, Eli; Kovacs, Kit; Lydersen, Christian et al. (2005). Fatty acid composition of the skin and blubber, and potential prey organisms of walruses Odobenys rosmarus. (ekstern lenke)
• Krakstad, Jens-Otto; Halvorsen, Ann-Kristin; Nøttestad, Leif et al. (2004). Dusky dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey. (ekstern lenke)
• Krakstad, Jens-Otto; Halvorsen, Ann-Kristin; Nøttesstad, Leif et al. (2003). Dusky Dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey. (ekstern lenke)
• Derocher, Andrew; Andersen, Magnus; Kovacs, Kit M. et al. (2001). Fatty acid composition of the blubber of polar bears (Ursus maritimus) and of their prey, ringed seals (Phoca vitulina), bearded seals (Erignathus barbatus) and harp seals (Phoca groenlandica). (ekstern lenke)
• Halvorsen, Ann-Kristin; Grahl-Nielsen, Otto; Olsen, Erik Joel Steinar (2001). The fatty acid composition of the blubber of fetuses and female minke whales. (ekstern lenke)
• Birkeland, Annette; Grahl-Nielsen, Otto; Kovacs, Kit M. et al. (2001). Mother to pup transfer of fatty acids in three seal species: harbor seal (Phoca vitulina), harp seal (Phoca groenlandica) and hooded seal (Cystophora cristata). (ekstern lenke)
• Folkvord, Arild; Haaland, Inger Margrethe; Grahl-Nielsen, Otto et al. (1994). Fatty acid composition of herring (Clupea harengus L.) larvae from two different spawning sites. (ekstern lenke)

Mastergradsoppgave

• Fløtre, Anne lise; Grahl-Nielsen, Otto (2004). Fettsyrer i vågehval. Balaenoptera acutorostrata - en multivariat analyse av spekket. (ekstern lenke)

Faglig foredrag

• Grahl-Nielsen, Otto (1999). Nettundervisning i begynneremnet i kjemi. (ekstern lenke)
• Grahl-Nielsen, Otto (1997). Presentasjon av K101. (ekstern lenke)
• Grahl-Nielsen, Otto (1997). Dra til sjøs, for der er mye kjemi. (ekstern lenke)
• Grahl-Nielsen, Otto (1996). Early detection of oxidation of marine oils by chemometric determination of changes in fatty acid composition. (ekstern lenke)
• Grahl-Nielsen, Otto (1994). Feite tider. (ekstern lenke)
• Grahl-Nielsen, Otto (1994). Marine mammalian fatty acids: A source of information. (ekstern lenke)

Rapport

• Botnen, Helge; Hjohlman, Staffan; Mjaavatten, Olav et al. (1998). Overvåking av marinbiologiske forhold ved Statoils raffineri på Mongstad i 1997. (ekstern lenke)
• Tvedten, Øyvind F.; Grahl-Nielsen, Otto; Mjaavatten, Olav et al. (1997). Undersøkelse av miljøforhold utenfor Norsk Blikkvalseverk AS. (ekstern lenke)
• Tvedten, Øyvind F.; Botnen, Helge; Johannessen, Per J et al. (1996). Miljøundersøkelse ved Norsk Blikkvalseverk. (ekstern lenke)
• Tvedten, Øyvind F.; Grahl-Nielsen, Otto; Botnen, Helge et al. (1996). Miljøundersøkelse ved Eide avfallsplass, Fjell kommune. (ekstern lenke)
• Botnen, Helge; Grahl-Nielsen, Otto; Mjaavatten, Olav et al. (1996). Tungmetall og oljehydrokarboner i blåskjell fra Mongstadområdet i 1996. (ekstern lenke)
• Botnen, Helge; Tvedten, [Mangler fornavn] Øyvind F.; Grahl-Nielsen, Otto et al. (1996). Miljøundersøkelse i Dalabukta og Kristiansund havneområde. (ekstern lenke)
• Botnen, Helge; Årestad, K.; Grahl-Nielsen, Otto et al. (1994). Overvåkning av marinbiologiske forhold ved Statoils raffineri på Mongstad i 1994. (ekstern lenke)
• Botnen, Helge; Årrestad, Knut; Grahl-Nielsen, Otto et al. (1994). Overvåkning av marinbiologiske forhold ved Statoils raffineri på Mongstad i 1994. (ekstern lenke)
• Botnen, Helge; Hjohlman, Staffan; Tvedten, Øyvind F. et al. (1993). Overvåking av marinbiologiske forhold ved Norsk Hydro AS sitt anlegg på Sture i Øygarden 1993. (ekstern lenke)
• Johannessen, Per J; Botnen, Helge; Hjohlman, S. et al. (1992). Overvåking av marinbiologiske forhold ved Statoil's raffineri på Mongstad 1991. (ekstern lenke)
• Johannessen, Per J; Risheim, I.; Botnen, Helge et al. (1991). Overvåking av marinbiologiske forhold ved Statoil's raffineri på Mongstad. IFM Rapport 29. (ekstern lenke)
• Aure, Jan; Grahl-Nielsen, Otto; Sundby, Svein (1979). Spredning av olje-holdig avløpsvann i Fensfjorden fra oljeraffineriet på Mongstad. (ekstern lenke)

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