Conference lecture

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

Academic article

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

Lecture

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

Conference poster

• Andrew Derocher; Magnus Andersen; Kit M. Kovacs 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). (external link)
• Ann-Kristin Halvorsen; Otto Grahl-Nielsen; Erik Joel Steinar Olsen (2001). The fatty acid composition of the blubber of fetuses and female minke whales. (external link)
• Annette Birkeland; Otto Grahl-Nielsen; Kit M. Kovacs 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). (external link)
• Jens-Otto Krakstad; Ann-Kristin Halvorsen; Leif Nøttestad et al. (2004). Dusky dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey. (external link)
• Arild Folkvord; Inger Margrethe Haaland; Otto Grahl-Nielsen et al. (1994). Fatty acid composition of herring (Clupea harengus L.) larvae from two different spawning sites. (external link)
• Eli Skoglund; Kit Kovacs; Christian Lydersen et al. (2005). Fatty acid composition of the skin and blubber, and potential prey organisms of walruses Odobenys rosmarus. (external link)
• Jens-Otto Krakstad; Ann-Kristin Halvorsen; Leif Nøttesstad et al. (2003). Dusky Dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey. (external link)

Research report

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

Master’s thesis

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

Academic book chapter

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

Letter to the editor

• Otto Grahl-Nielsen; Magnus Andersen; Andrew E. Derocher 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. (external link)
• Otto Grahl-Nielsen (2009). Exploration of the foraging ecology of marine mammals by way of the fatty acid composition of their blubber. (external link)

See a complete overview of publications in NVA.