Home
University of Bergen
Otto Grahl-Nielsen's picture

Otto Grahl-Nielsen

Emeritus, Professor
Department of Chemistry
  • E-mailotto.grahl-nielsen@uib.no
  • Visitor Address
    Allégaten 41
    Realfagbygget
    5007 Bergen
  • Postal Address
    Postboks 7803
    5020 Bergen
Academic article
  • Show author(s) (2018). You are what you eat? Differences in lipid composition of cod larvae reared on natural zooplankton and enriched rotifers. Aquaculture Nutrition. 224-235.
  • Show author(s) (2017). Fatty acid composition in the white muscle of Cottoidei fishes of Lake Baikal reflects their habitat depth. Environmental Biology of Fishes. 1623-1641.
  • Show author(s) (2014). Distinction among North Atlantic cod Gadus morhua stocks by tissue fatty acid profiles. Journal of Fish Biology. 1904-1925.
  • Show author(s) (2012). Tracing fish farm waste in the northern shrimp Pandalus borealis (Kroyer, 1838) using lipid biomarkers. Aquaculture Environment Interactions. 133-144.
  • Show author(s) (2012). Effects of reduced diameter of bag cultures on content of essential fatty acids and cell density in a continuous algal production system. Journal of Applied Phycology. 109-116.
  • Show author(s) (2011). Transformation through the food chain of Lake Baikal hydrobionts fatty acids. Chemistry of Natural Compounds. 857-861.
  • Show author(s) (2011). Fatty acids of polar lipids in heart tissue are good taxonomic markers for tropical African freshwater fish. African Journal of Aquatic Science. 115-127.
  • Show author(s) (2011). Fatty acids in harp seal blubber do not necessarily reflect their diet. Marine Ecology Progress Series. 263-276.
  • Show author(s) (2011). Fatty acid profiles in different fish species in Lake Baikal. Aquatic Biology. 1-U15.
  • Show author(s) (2011). Fatty acid composition of seed oils from selected wild plants of Kahuzi-Biega National Park and surroundings, Democratic Republic of Congo. African Journal of Food Science. 219-226.
  • Show author(s) (2011). Effects of reduced diameter of bag cultures on content of essential fatty ascids and cell density in a continous algal production system. Journal of Applied Phycology.
  • Show author(s) (2010). Fatty acids in fish scales. Marine Biology. 1567-1576.
  • Show author(s) (2010). Fatty acid composition of the blubber and dermis of adult male Atlantic walruses (Odobenus rosmarus rosmarus) in Svalbard, and their potential prey. Marine Biology Research. 239-250.
  • Show author(s) (2010). Fatty acid composition in adductor muscle of juvenile scallops (Pecten maximus) from five Norwegian populations reared in the same environment. Biochemical Systematics and Ecology. 478-488.
  • Show author(s) (2010). Dusky dolphins Lagenorhynchus obscurus and Cape fur seals Arctocephalus pusillus pusillus: fatty acid composition of their blubber and prey species. South African Journal of Marine Science. 187-196.
  • Show author(s) (2010). Does a large-scale continuous algal production system provide a stable supply of fatty acids to bivalve hatcheries? Journal of Applied Phycology. 769-777.
  • Show author(s) (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. Biochemical Systematics and Ecology. 662-669.
  • Show author(s) (2009). Deep-water shrimp (Pandalus borealis, Kroyer 1838) as indicator organism for fish-farm waste. Journal of Experimental Marine Biology and Ecology. 82-89.
  • Show author(s) (2008). Variation in Fatty Acid Composition in Muscle and Heart Tissues among Species and Populations of Tropical Fish in Lakes Victoria and Kyoga. Lipids. 1017-1029.
  • Show author(s) (2008). Stratification, composition, and function of marine mammal blubber: The ecology of fatty acids in marine mammals. Physiological and Biochemical Zoology. 473-485.
  • Show author(s) (2006). Validation of a one-step extraction/methylation method for determination of fatty acids and cholesterol in marine tissues. Journal of Chromatography A. 291-298.
  • Show author(s) (2006). Prediction of gas chromatographic retention of polyunsaturated fatty acid methyl esters. Journal of Chromatography A. 171-180.
  • Show author(s) (2006). Geometrical isomerisation of double bonds in acid-catalysed preparation of fatty acid methyl esters. European Journal of Lipid Science and Technology. 315-322.
  • Show author(s) (2006). Geometrical isomerisation of double bonds in acid catalysed preparation of fatty acid methyl esters. European Journal of Lipid Science and Technology. 315-322.
  • Show author(s) (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. African Journal of Aquatic Science. 297-304.
  • Show author(s) (2005). Variable fatty acid composition of the pelagic appendicularian Oikopleura dioica in response to dietary quality and quantity. Marine Ecology Progress Series. 165-176.
  • Show author(s) (2005). Transfer of fatty acids from mothers to their calves during lactation in white whales Delphinapterus leucas. Marine Ecology Progress Series. 287-294.
  • Show author(s) (2005). Fatty acid composition of blubber of the Baikal seal Phoca sibirica and its marine relative, the ringed seal P. hispida. Marine Ecology Progress Series. 261-274.
  • Show author(s) (2004). Stock structure of Sebastes mentella in the North Atlantic revealed by chemometry of the fatty acid profile in heart tissue. ICES Journal of Marine Science. 113-126.
  • Show author(s) (2004). Fatty acid composition of the adipose tissue of polar bears and of their prey: ringed seals, bearded seals and harp seals. Marine Ecology Progress Series. 275-282.
  • Show author(s) (2004). Autumn diet of harbour seals (Phoca vitulina) at Prins Karls Forland, Svalbard, assessed via scat and fatty-acid analyses. Canadian Journal of Zoology. 1230-1245.
  • Show author(s) (2003). Temporal variations and anatomical distributions of fatty acids in the bivalve Mya truncata, L. 1758, from Isfjorden, Spitsbergen. Polar Biology. 83-92.
  • Show author(s) (2003). Fatty acid composition of the adipose tissue of polar bears and their prey: ringed seals, bearded seals and harp seals. Marine Ecology Progress Series. 275-282.
  • Show author(s) (2003). Blubber fatty acids of minke whales: stratification, population identification and relation to diet. Marine Biology. 13-24.
  • Show author(s) (2001). The redfish species Sebastes viviparus, Sebastes marinus and Sebastes mentella have different composition of their tissue fatty acids. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology. 73-85.
  • Show author(s) (2000). Transfer of fatty acids from female seal bluber via milk to pup blubber. Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology. 277-283.
  • Show author(s) (2000). Trace element levels in harp seal (Pagophilus groenlandicus) and hooded seal (Crystophora cristata) from the Greenland Sea. A multivariate approach. Science of the Total Environment. 123-133.
  • Show author(s) (2000). Relative absorption of fatty acids by Atlantic salmon Salmo salar from different diets, as evaluated by multivariate statistics. Aquaculture Nutrition. 255-261.
  • Show author(s) (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. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology. 69-79.
  • Show author(s) (2000). Discrimination between two reared stocks of cod (Gadus morhua) from Faroe Islands by chemometry of the fatty acid composition in the heart tissue. Marine Biology. 573-580.
  • Show author(s) (1996). Fatty acid composition of herring (Clupea harengus L.) larvae off western Norway. Sarsia. 299-305.
  • Show author(s) (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. Marine Pollution Bulletin. 564-571.
  • Show author(s) (1995). Detection of effects of ozone on birch, Betula pendula Roth., by chemometrical evaluation of concentrations of lipid components in leaves. Analytica Chimica Acta. 209-216.
  • Show author(s) (1993). Fatty acids in marine fungi. Journal of Industrial Microbiology & Biotechnology. 373-378.
  • Show author(s) (1993). Environmental distribution of organic waste from a marine fish farm. Aquaculture. 229-244.
  • Show author(s) (1993). Distinguishing between populations of the harp seal Pagophilus groenlandicus (Erxleben 1777), by chemometry of the fatty acid profile in selected tissues. Canadian Journal of Fisheries and Aquatic Sciences. 1400-1404.
  • Show author(s) (1989). DETERMINATION OF BENZENES AND NAPHTHALENES IN WATER BY PURGE AND TRAP ISOLATION AND CAPPILLARY COLUMN CHROMATOGRAPHY. Journal of Chromatography A. 271-278.
  • Show author(s) (1987). The fatty acid profile in cod (Gadus morhua L.) eggs and larvae. Developmental variations and responses to oil pollution. Sarsia. 415-417.
  • Show author(s) (1985). Variations in the Fatty Acid Profile of Marine Animals Caused by Environmental and Developmental Changes. Marine Environmental Research. 218-221.
Report
  • Show author(s) (1998). Overvåking av marinbiologiske forhold ved Statoils raffineri på Mongstad i 1997. .
  • Show author(s) (1997). Undersøkelse av miljøforhold utenfor Norsk Blikkvalseverk AS. .
  • Show author(s) (1996). Tungmetall og oljehydrokarboner i blåskjell fra Mongstadområdet i 1996. .
  • Show author(s) (1996). Miljøundersøkelse ved Norsk Blikkvalseverk. .
  • Show author(s) (1996). Miljøundersøkelse ved Eide avfallsplass, Fjell kommune. 14. 14. .
  • Show author(s) (1996). Miljøundersøkelse i Dalabukta og Kristiansund havneområde. 19. 19. .
  • Show author(s) (1994). Overvåkning av marinbiologiske forhold ved Statoils raffineri på Mongstad i 1994. .
  • Show author(s) (1994). Overvåkning av marinbiologiske forhold ved Statoils raffineri på Mongstad i 1994. 40. 40. .
  • Show author(s) (1993). Overvåking av marinbiologiske forhold ved Norsk Hydro AS sitt anlegg på Sture i Øygarden 1993. .
  • Show author(s) (1992). Overvåking av marinbiologiske forhold ved Statoil's raffineri på Mongstad 1991. .
  • Show author(s) (1991). Overvåking av marinbiologiske forhold ved Statoil's raffineri på Mongstad. IFM Rapport 29. .
  • Show author(s) (1979). Spredning av olje-holdig avløpsvann i Fensfjorden fra oljeraffineriet på Mongstad. 2. 2. .
Popular scientific lecture
  • Show author(s) (1999). Nettundervisning i begynneremnet i kjemi.
  • Show author(s) (1997). Presentasjon av K101.
  • Show author(s) (1997). Dra til sjøs, for der er mye kjemi.
  • Show author(s) (1996). Early detection of oxidation of marine oils by chemometric determination of changes in fatty acid composition.
  • Show author(s) (1994). Marine mammalian fatty acids: A source of information.
  • Show author(s) (1994). Feite tider.
Academic lecture
  • Show author(s) (2008). Identification of Pecten maximus populations in Norway by muscle fatty acid profiles.
  • Show author(s) (2004). Stratification of the blubber of marine mammals.
  • Show author(s) (2004). Fatty acid profiles as natural marks for stock identification.
  • Show author(s) (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).
  • Show author(s) (2002). Taxonomic and nutritional studies on marine fish and mammals by determination of tissue fatty acid composition.
  • Show author(s) (2002). Fettsyresammensetningen i spekket til isbjørn.
  • Show author(s) (2002). Eksempler på akvakulturelle problemer som er løst ved hjelp av kromatografiske metoder.
  • Show author(s) (2002). Chemometric determination of fatty acids inmarine organisms by high resolution gas chromatography followed by multivariate statistics.
  • Show author(s) (2001). Taxonomic and dietary information from the fatty acid composition of the blubber of marine mammals.
  • Show author(s) (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.
  • Show author(s) (2001). Spatial and temporal trends in blubber fatty acids of Northeastern Atlantic.
  • Show author(s) (2001). Nettforelesninger i generell kjemi.
  • Show author(s) (2001). Nettbasert kjemiundervisning. Erfaringer og pedagogiske refleksjoner.
  • Show author(s) (2001). Blubber fatty acids in marine mammals.
  • Show author(s) (2000). Nettkollokvering og orakeltjeneste.
  • Show author(s) (2000). Nettforelesninger i generell kjemi.
  • Show author(s) (2000). Lynkurs i Flash.
  • Show author(s) (2000). Informasjons- og kommunikasjonsteknologi (IKT) i undervisning og veiledning.
  • Show author(s) (1999). Analytiske utfordringer ved bestemmelse av hormonhermende miljøgifter.
  • Show author(s) (1998). Taksonomi vha fettsyreprofiler.
  • Show author(s) (1998). Sildelarvens første levedager.
  • Show author(s) (1998). Sildelarvens første levedager.
  • Show author(s) (1998). Sigevann fra avfallsdeponier og produsert vann fra oljeplattformer.
  • Show author(s) (1998). Problemer med presisjonen ved GC-analyse av kompliserte blandinger.
  • Show author(s) (1998). Oljefilm på overflaten som følge av utslipp fra produksjonsplattformer.
  • Show author(s) (1998). Flyktige forbindelser som dannes ved oksidasjon av marine oljer.
  • Show author(s) (1998). Fenoler i sigevann fra 10 avfallsdeponier i Hordaland.
  • Show author(s) (1998). Endring av fettsyresammensetningen ved oksidasjon av marine oljer.
  • Show author(s) (1998). Derivatisering av fosfolipider og HPLC-analyse av molekylformer av utvalgte fosfolipider.
  • Show author(s) (1998). Bestandsidentifikasjon ved hjelp av fettsyreprofiler.
  • Show author(s) (1998). Analyse av flyktige komponenter i sigevann fra 10 avfallsdeponier i Hordaland.
  • Show author(s) (1997). Rasjonaliseringen av den kjemiske overvåkningen rundt oljeinstellasjoner på norsk sokkel.
  • Show author(s) (1997). Når analyseresultatene behandles med flervariabel statistikk vil utbyttet av miljøundersøkelsene bli mangedoblet.
  • Show author(s) (1997). Lipider hos Mya truncata på Svalbard oljeinstellasjoner på norsk sokkel.
Reader opinion piece
  • Show author(s) (2009). Exploration of the foraging ecology of marine mammals by way of the fatty acid composition of their blubber. Marine mammal science. 239-242.
Thesis at a second degree level
  • Show author(s) (2004). Fettsyrer i vågehval. Balaenoptera acutorostrata - en multivariat analyse av spekket.
Letter to the editor
  • Show author(s) (2004). Reply to Comment on Grahl-Nielsen et al. (2003): sampling, data treatment and predictions in investigations on fatty acids in marine mammals. Marine Ecology Progress Series. 303-306.
Academic chapter/article/Conference paper
  • Show author(s) (2010). The learning effect of using a blended learning design in K12 science teaching. 10 pages.
  • Show author(s) (2004). Seasonal distribution, diversity and biochemical composition of appendicularians in Norwegian fjords. 28 pages.
  • Show author(s) (2004). Kjemi på nett. 13 pages.
  • Show author(s) (2004). Fatty acid profiles as natural marks for stock identification. 23 pages.
  • Show author(s) (2000). Beskrivelse av den trolig eldste norske påskeliljekultivar, basert på kjemiske, morfologiske og cytologiske undersøkelser. 4 pages.
Poster
  • Show author(s) (2005). Fatty acid composition of the skin and blubber, and potential prey organisms of walruses Odobenys rosmarus.
  • Show author(s) (2004). Dusky dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey.
  • Show author(s) (2003). Dusky Dolphins (Lagenorhynchus obscurus): Fatty acid composition of their blubber and of their prey.
  • Show author(s) (2001). The fatty acid composition of the blubber of fetuses and female minke whales.
  • Show author(s) (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).
  • Show author(s) (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).
  • Show author(s) (1994). Fatty acid composition of herring (Clupea harengus L.) larvae from two different spawning sites.
Digital learning tools
  • Show author(s) (2004). Hydrogen istedenfor bensin?

More information in national current research information system (CRIStin)