Yngvar Olsen

About

Research interests and experience

The research activities of Yngvar Olsen have basically been related to different aspects of nutrition of plankton organisms, the first 10 years in freshwater and later on in marine coastal water. Early work involved studies of uptake and use of mineral nutrient in phytoplankton and food intake and allocation in zooplankton. Later work includes more integrated ecological studies of planktonic food webs with a focus on the important functional plankton groups and their trophic interactions in coastal waters. Experimental studies have been most important, and culture systems include batch cultures and chemostat for single organisms, mesocosms for experimental ecosystems, and lakes/lagoons for full scale ecosystem experiments (see list of publications in http://scholar.google.com/citations?user=Vc6KjlIAAAAJ&hl=no).

The majority of the biological activity in the marine ecosystems (>90%) takes place in microorganisms of the planktonic food web, which includes organisms feeding on at least 4 different trophic levels (level 1-4). This is different in terrestrial ecosystems where carnivores eating other carnivores (trophic level 4) are not that common. The functional and structural characteristics of the planktonic food web are most important for the environmental state of the marine ecosystem, for its productivity and fishing yields, and for its ability to take up and sequester carbon through the so called “Biological Carbon Pump” (see Figure). Plankton nutrition and interactions between organisms and functional groups are instrumental for a fully understanding all these aspects.

Fields of research related to plankton nutrition:

General mechanisms of coastal eutrophication - over-fertilization of coastal water leading to unacceptable environmental state in coastal waters
Environmental influence of salmon aquaculture on surface water ecosystems, carrying capacity of production
Planktonic stages of salmon lice, transfer mechanisms in and in between stocks of salmonids
Lipid nutrition in fish larvae (classified as plankton) and juveniles
Rotifer culture and their lipid/phospholipids metabolism, lipid enrichment procedures
Lipid and mineral nutrition of copepods; with focus on red feed Calanus finmarchicus
Experimental studies of microalgae; growth characteristics and biochemical composition

Fields of research related to aquaculture ecology:

Integrated multi-trophic aquaculture (IMTA), salmon driven with a focus on waste generation of salmon and macroalgae in IMTA
Nutrient physiology and growth characteristics of farmed and wild macroalgae

MsC and Phd studies can be advised within all mentioned fields of research.

Specialty Chief Editor: Marine Fisheries, Aquaculture and Living Resources, Frontiers in Marine Science (http://journal.frontiersin.org/journal/marine-science)

Publications

2023

Petersen, Magnus; Bjordal, Mari; Gjerstad, Marit; Kjerrgård, Ole Christian; Aspøy, Bjørn; James, Philip. (2023) Framtidas matproduksjon: Regjeringen spenner bein på egne mål. Nationen
Feature article
Wang, Chun-Deng; Olsen, Yngvar. (2023) Quantifying regional feed utilization, production and nutrient waste emission of Norwegian salmon cage aquaculture. Aquaculture Environment Interactions
Academic article

2022

Vestrum, Ragnhild Inderberg; Forberg, Torunn; Luef, Birgit; Bakke, Ingrid; Winge, Per; Olsen, Yngvar. (2022) Commensal and opportunistic bacteria present in the microbiota in atlantic cod (Gadus morhua) larvae differentially alter the hosts’ innate immune responses. Microorganisms
Academic article
Guragain, Prashanna; Båtnes, Anna Solvang; Zobolas, John; Olsen, Yngvar; Bones, Atle M.; Winge, Per. (2022) IIb-RAD-sequencing coupled with random forest classification indicates regional population structuring and sex-specific differentiation in salmon lice (Lepeophtheirus salmonis). Ecology and Evolution
Academic article
Dong, Shuang-lin; Dong, Yun-wei; Cao, Ling; Verreth, Johan; Olsen, Yngvar; Liu, Wen-jing. (2022) Optimization of aquaculture sustainability through ecological intensification in China. Reviews in Aquaculture
Academic article

2021

Erbs, Stefan; James, Philip; Boéchat, Céline; Ravagnan, Elisa; Sparboe, Lars Olav; Petersen, Magnus. (2021) Fiskeriministeren må dukke ned i taren. Bergens Tidende
Feature article
Guragain, Prashanna; Tkachov, Max; Båtnes, Anna Solvang; Olsen, Yngvar; Winge, Per; Bones, Atle M.. (2021) Principles and Methods of Counteracting Harmful Salmon–Arthropod Interactions in Salmon Farming: Addressing Possibilities, Limitations, and Future Options. Frontiers in Marine Science
Academic literature review
Nikouli, Eleni; Kormas, Konstantinos Ar.; Jin, Yang; Olsen, Yngvar; Bakke, Ingrid; Vadstein, Olav. (2021) Dietary Lipid Effects on Gut Microbiota of First Feeding Atlantic Salmon (Salmo salar L.). Frontiers in Marine Science
Academic article
Mathew, K Avarachen; Ardelan, Murat Van; Villa Gonzalez, Susana; Vadstein, Olav; Sajith Vezhapparambu, Veena; Leiknes, Øystein. (2021) Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation. Science of the Total Environment
Academic article
Hancke, Kasper; Broch, Ole Jacob; Olsen, Yngvar; Bekkby, Trine; Hansen, Pia Kupka; Fieler, Reinhold. (2021) Miljøpåvirkninger av taredyrking og forslag til utvikling av overvåkingsprogram. NIVA-rapport (7589)
Report
Jevne, Lone Sunniva; Guttu, Ane Maria; Båtnes, Anna Solvang; Olsen, Yngvar; Reitan, Kjell Inge. (2021) Planktonic and Parasitic Sea Lice Abundance on Three Commercial Salmon Farms in Norway Throughout a Production Cycle. Frontiers in Marine Science
Academic article

2017

Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Bizsel, Can; Olsen, Yngvar. (2017) Responses in bacterial community structure to waste nutrients from aquaculture: an in situ microcosm experiment in a Chilean fjord. Aquaculture Environment Interactions
Academic article
Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Bizsel, Can; Olsen, Yngvar. (2017) Responses in the bacterial community structure to waste nutrients from aquaculture: an in situ microcosm experiment in a Chilean fjord. Aquaculture Environment Interactions
Academic article

2016

Leiknes, Øystein; Etter, Siv Anina; Tokle, Nils E.; Bergvik, Maria; Vadstein, Olav; Olsen, Yngvar. (2016) The effect of essential fatty acids for the somatic growth in nauplii of Calanus finmarchicus. Frontiers in Marine Science
Academic article
Forberg, Torunn; Sjulstad, Eli Bjørnø; Bakke, Ingrid; Olsen, Yngvar; Hagiwara, Atsushi; Sakakura, Yoshitaka. (2016) Correlation between microbiota and growth in Mangrove Killifish (Kryptolebias marmoratus) and Atlantic cod (Gadus morhua). Scientific Reports
Academic article
Hagemann, Andreas; Øie, Gunvor; Evjemo, Jan Ove; Olsen, Yngvar. (2016) Effects of light and short-term temperature elevation on the 48-h hatching success of cold-stored Acartia tonsa Dana eggs. Aquaculture International
Academic article
Hagemann, Andreas; Vorren, Sigbjørn Hjetleland; Attramadal, Yngve; Evjemo, Jan Ove; Olsen, Yngvar. (2016) Effects of different wavelengths and intensities of visible light on the hatching success of Acartia tonsa Dana eggs. Aquaculture International
Academic article
Løland, Anders; Omholt, Stig William; Lamberg, Anders; Kristensen, Torstein; Urke, Henning Andre; Olsen, Yngvar. (2016) Metodevurdering for registrering rømt oppdrettslaks. NTNU, Institutt for biologi
Report
Slatlem, Karina; Olsen, Yngvar. (2016) Saccharina latissima, effekt av utskiftningsintervall av medium for vegetative gametofytter og utsåingstetthet på vekst, samt stresstester av kimplanter. NTNU, Institutt for biologi
Masters thesis
Jin, Yang; Li, Keshuai; Olsen, Yngvar. (2016) Time kinetics of fatty acid changes in phospholipids following enrichment and starvation of Artemia franciscana with a main focus on docosahexaenoic acid. Aquaculture Nutrition
Academic article

2015

Li, Keshuai; Olsen, Yngvar; Kjørsvik, Elin. (2015) Phospholipids in Atlantic cod (Gadus morhua L.) larvae rearing: Incorporation of DHA in live feed and larval phospholipids and the metabolic capabilities of larvae for de novo synthesis. Institutt for biologi, NTNU
Doctoral dissertation
Li, Keshuai; Olsen, Yngvar. (2015) Effect of enrichment time and dietary DHA and non-highly unsaturated fatty acid composition on the efficiency of DHA enrichment in phospholipid of rotifer (Brachionus Cayman). Aquaculture
Academic article
Olsen, Yngvar. (2015) How can mariculture better help feed humanity?. Frontiers in Marine Science
Academic article
Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bones, Atle M.. (2015) Gene regulation of lipid and phospholipid metabolism in Atlantic cod (Gadus morhua) larvae. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology
Academic article
Brown, Eunice Nana Adjoa; Ardelan, Murat Van; Olsen, Yngvar. (2015) Use of phytoplankton culture and multianalytical techniques to understand the effects of the organic molecule, siderophore on species specific bioavailability of iron. NTNU
Masters thesis
Jansen, Henrice M; Handå, Aleksander; Cranford, Peter; Bannister, Raymond; Bergvik, Maria; Broch, Ole Jacob. (2015) EXPLOITATION OF NUTRIENTS FROM SALMON AQUACULTURE: WHAT IS THE POTENTIAL FOR IMTA IN NORWAY?. Journal of Shellfish Research
Short communication
Jevne, Lone; Olsen, Yngvar. (2015) Proteininnhold og vekst for Saccharina latissima dyrket ved varierende tilførsel av nitrat og lys. NTNU
Masters thesis
Li, Keshuai; Kjørsvik, Elin; Bergvik, Maria; Olsen, Yngvar. (2015) Manipulation of the fatty acid composition of phosphatidylcholine and phosphatidylethanolamine in rotifers Brachionus Nevada and Brachionus Cayman. Aquaculture Nutrition
Academic article
Li, Keshuai; Olsen, Rolf Erik; Østensen, Mari-Ann; Altin, Dag; Kjørsvik, Elin; Olsen, Yngvar. (2015) Atlantic cod (Gadus morhua) larvae can biosynthesis phospholipid de novo from 2-oleoyl-glycerol and glycerol precursors. Fish Physiology & Biochemistry
Academic article

2014

Skjermo, Jorunn; Aasen, Inga Marie; Arff, Johanne; Broch, Ole Jacob; Carvajal, Ana Karina; Christie, Hartvig C. (2014) A new Norwegian bioeconomy based on cultivation and processing of seaweeds: Opportunities and R&D needs. SINTEF Fisheries and Aquaculture
Report
Olsen, Yngvar; Evjemo, Jan Ove; Kjørsvik, Elin; Larssen, Harald; Li, Keshuai; Overrein, Ingrid. (2014) DHA content in dietary phospholipids affects DHA content in phospholipids of cod larvae and larval performance. Aquaculture
Academic article
Olsen, Yngvar; Reinertsen, Helge; Sommer, Ulrich; Vadstein, Olav. (2014) Responses of biological and chemical components in North East Atlantic coastal water to experimental nitrogen and phosphorus addition - A full scale ecosystem study and its relevance for management. Science of the Total Environment
Academic article
Wang, Xinxin; Broch, Ole Jacob; Forbord, Silje; Handå, Aleksander; Skjermo, Jorunn; Reitan, Kjell Inge. (2014) Assimilation of inorganic nutrients from salmon (Salmo salar) farming by the macroalgae (Saccharina latissima) in an exposed coastal environment: Implications for integrated multi-trophic aquaculture. Journal of Applied Phycology
Academic article
Attramadal, Kari; Troung, Thi My Hanh; Bakke, Ingrid; Skjermo, Jorunn; Olsen, Yngvar; Vadstein, Olav. (2014) RAS and microbial maturation as tools for K-selection of microbial communities improve survival in cod larvae. Aquaculture
Academic article
Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Sanchez, Nicolas; Gonzalez, Humberto E.. (2014) Responses in the microbial food web to increased rates of nutrient supply in a southern Chilean fjord: Possible implications of cage aquaculture. Aquaculture Environment Interactions
Academic article
Skrove, Tale; Olsen, Yngvar; Funderud, Jon. (2014) Effekten av næringssaltutslepp frå oppdrettsanlegg på fytoplanktonsamfunn i Sør-Trøndelag. NTNU
Masters thesis
Luong, Anh D; De Laender, Frederik; Olsen, Yngvar; Vadstein, Olav; Dewulf, Jo; Janssen, Colin R.. (2014) Inferring time-variable effects of nutrient enrichment on marine ecosystems using inverse modelling and ecological network analysis. Science of the Total Environment
Academic article
Zhou, Renbin; Olsen, Yngvar. (2014) A study of the influence of nitrate supply on intracellular protein and nitrogen components in the kelp Saccharina latissima. NTNU
Masters thesis
Tønder, Tine; Olsen, Yngvar; Funderud, Jon. (2014) A Study of the Seasonal Variation in Biochemical Composition of Saccharina latissima. NTNU
Masters thesis
Hjetland Vorren, Sigbjørn; Olsen, Yngvar; Evjemo, Jan Ove. (2014) Effekten av to synlig lys modaliteter og røntgen på klekkesuksessen hos Acartia tonsa-egg. NTNU
Masters thesis
Leivestad Fossberg, Julia; Olsen, Yngvar. (2014) Seasonal changes in growth and composition of the kelp Saccharina latissima cultivated in salmon-driven IMTA. NTNU
Masters thesis
Singsaas, Katrine; Olsen, Yngvar. (2014) Kjemisk desinfisering av egg til copepoden Acartia tonsa. NTNU
Masters thesis
Stensås, Lene; Olsen, Yngvar; Bergvik, Maria. (2014) Assimilation of salmon feed and salmon feces by the great scallop (Pecten maximus). NTNU
Masters thesis
Leiknes, Øystein; Striberny, Anja; Tokle, Nils Egil; Olsen, Yngvar; Vadstein, Olav; Sommer, Ulrich. (2014) Feeding selectivity of Calanus finmarchicus in the Trondheimsfjord. Journal of Sea Research
Academic article

2013

Olsen, Yngvar. (2013) A synthesis of the technical, environmental, spatial and governance issues and opportunities. Food and Agriculture Organization of the United Nations (FAO)
Chapter
Chauton, Matilde Skogen; Olsen, Yngvar; Vadstein, Olav. (2013) Biomass production from the microalga Phaeodactylum tricornutum: Nutrient stress and chemical composition in exponential fed-batch cultures. Biomass & Bioenergy
Academic article
Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bakke, Ingrid. (2013) Gene regulation of Atlantic cod (Gadus morhua) larvae with focus on lipid digestion and phospholipid metabolism. Communications in agricultural and applied biological sciences
Academic article
Handå, Aleksander; Forbord, Silje; Wang, Xinxin; Broch, Ole Jacob; Dahle, Stine Veronica Wiborg; Størseth, Trond Røvik. (2013) Seasonal- and depth-dependent growth of cultivated kelp (Saccharina latissima) in close proximity to salmon (Salmo salar) aquaculture in Norway. Aquaculture
Academic article
Blöcher, Nina; Olsen, Yngvar; Günther, Jana. (2013) Variability of biofouling communities on fish cage nets: A 1-year field study at a Norwegian salmon farm. Aquaculture
Academic article
Olsen, Yngvar. (2013) Ecological principles and options for seafood production. Novus Forlag
Academic chapter/article/Conference paper
Handå, Aleksander; Nordtug, Trond; Halstensen, Stein; Olsen, Anders Johny; Reitan, Kjell Inge; Olsen, Yngvar. (2013) Temperature-dependent feed requirements in farmed blue mussels (Mytilus edulis L.) estimated from soft tissue growth and oxygen consumption and ammonia-N excretion. Aquaculture Research
Academic article
Mühlroth, Alice; Li, Keshuai; Røkke, Gunvor; Winge, Per; Olsen, Yngvar; Hohmann-Marriott, Martin Frank. (2013) Pathways of Lipid Metabolism in Marine Algae, Co-Expression Network, Bottlenecks and Candidate Genes for Enhanced Production of EPA and DHA in Species of Chromista. Marine Drugs
Academic literature review
Vadstein, Olav; Bergh, Øivind; Gatesoupe, Francois-Joel; Galindo-Villegas, Jorge; Mulero, Victoriano; Picchietti, Simona. (2013) Microbiology and immunology of fish larvae. Reviews in Aquaculture
Academic literature review
Wang, Xinxin; Andresen, Kjersti; Handå, Aleksander; Jensen, Bjørn; Reitan, Kjell Inge; Olsen, Yngvar. (2013) Chemical composition and release rate of waste discharge from an Atlantic salmon farm with an evaluation of IMTA feasibility. Aquaculture Environment Interactions
Academic article
Li, Hoang Bao Chau; Olsen, Yngvar. (2013) Biochemical composition of Rhodomonas baltica as a function of the dilution rate during steady rate of growth. NTNU
Masters thesis
Broch, Ole Jacob; Ellingsen, Ingrid H.; Forbord, Silje; Wang, Xinxin; Volent, Zsolt; Alver, Morten. (2013) Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway. Aquaculture Environment Interactions
Academic article
Salveson, Erik; Olsen, Yngvar. (2013) Effects of copepod density and water exchange on the egg production of Acartia tonsa Dana (Copepoda: Calanoida)feeding on Rhodomonas baltica. NTNU
Masters thesis
Nguyen, Thi Mai Thao; Olsen, Yngvar. (2013) NUTRIENT EMISSION AND PELAGIC ECOSYSTEM EFFECT OF SALMON AQUACULTURE IN THE NORD-MØRE REGION. NTNU
Masters thesis
Vadstein, Olav; Olsen, Yngvar. (2013) Trenger et kraftløft for fôr. Fiskaren
Interview Journal
Handå, Aleksander; McClimans, Thomas; Reitan, Kjell Inge; Knutsen, Øyvind; Tangen, Karl; Olsen, Yngvar. (2013) Artificial upwelling to stimulate growth of non-toxic algae in a habitat for mussel farming. Aquaculture Research
Academic article
Yang, Jin; Olsen, Yngvar; Li, Keshuai. (2013) Time kinetics of fatty acids changes in total lipids and phospholipids of A.franciscana following enrichment and starvation, with a main focus on docosahexaenoic acid (DHA). NTNU
Masters thesis
Maren, Løken; Olsen, Yngvar. (2013) Virkningen av økte næringssaltutslipp fra akvakultur på strukturen i planteplanktonsamfunnet. NTNU
Masters thesis
Matsson, Sanna; Olsen, Yngvar. (2013) Optimal physical and chemical environment for vegetative gametophyte culture of Saccharina latissima - with emphasis on nutrient composition and light quality. NTNU
Masters thesis
Olsen, Yngvar; Almås, Karl Andreas. (2013) Laks med god smak. Adresseavisen
Feature article

2012

Fredriksen, Stein; Husa, Vivian; Skjoldal, Hein Rune; Sjøtun, Kjersti; Christie, Hartvig C; Dale, Trine. (2012) Ingen regional overgjødsling på Vestlandet. Havforskningsrapporten
Popular scientific article
Attramadal, Kari; Salvesen, Ingrid; Xue, Renyu; Øie, Gunvor; Størseth, Trond Røvik; Vadstein, Olav. (2012) Recirculation as a possible microbial control strategy in the production of marine larvae. Aquacultural Engineering
Academic article
Olsen, Yngvar; Tokle, Nils Egil; Vadstein, Olav. (2012) Hvordan forvalte vannmassene? Om samspillet mellom næringssalt-utslipp og det planktoniske økosystemet. Universitetsforlaget
Academic chapter/article/Conference paper
Attramadal, Kari; Tøndel, Bjørnar; Salvesen, Ingrid; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2012) Ceramic clay reduces the load of organic matter and bacteria in marine fish larval culture tanks. Aquacultural Engineering
Academic article
Handå, Aleksander; Ranheim, Anders Wanvik; Olsen, Anders Johny; Altin, Dag; Reitan, Kjell Inge; Olsen, Yngvar. (2012) Incorporation of salmon fish feed and feces components in mussels (Mytilus edulis): Implications for integrated multi-trophic aquaculture in cool-temperate North Atlantic waters. Aquaculture
Academic article
Handå, Aleksander; Min, Hojune; Wang, Xinxin; Broch, Ole Jacob; Reitan, Kjell Inge; Reinertsen, Helge. (2012) Incorporation of fish feed and growth of blue mussels (Mytilus edulis) in close proximity to salmon (Salmo salar) aquaculture: Implications for integrated multi-trophic aquaculture in Norwegian coastal waters. Aquaculture
Academic article
Vadstein, Olav; Andersen, Tom; Reinertsen, Helge; Olsen, Yngvar. (2012) Carbon, nitrogen and phosphorus resource supply and utilisation for coastal planktonic heterotrophic bacteria in a gradient of nutrient loading. Marine Ecology Progress Series
Academic article
Attramadal, Kari; Øie, Gunvor; Størseth, Trond Røvik; Alver, Morten; Vadstein, Olav; Olsen, Yngvar. (2012) The effects of moderate ozonation or high intensity UV-irradiation on the microbial environment in RAS for marine larvae. Aquaculture
Academic article
Bergvik, Maria; Leiknes, Øystein; Altin, Dag; Dahl, Kjersti Rennan; Olsen, Yngvar. (2012) Dynamics of the Lipid Content and Biomass of Calanus finmarchicus (copepodite V) in a Norwegian Fjord. Lipids
Academic article
Wang, Xinxin; Olsen, Lasse Mork; Reitan, Kjell Inge; Olsen, Yngvar. (2012) Discharge of nutrient wastes from salmon farms: environmental effects, and potential for integrated multi-trophic aquaculture. Aquaculture Environment Interactions
Academic literature review
Jensen, Ingvil Nortier; Olsen, Yngvar. (2012) The Effect of Nutrient Release from Fish Farms on the Lower Trophic Levels of the Marine Food Web in North Patagonia, Chile. NTNU
Masters thesis
Kjølbo Rød, Kaia; Olsen, Yngvar. (2012) Sori disinfection in cultivation of Saccharina latissima. Evaluation of chemical treatments against diatom contamination. NTNU
Masters thesis
Kassah, Jemimah Etornam; Olsen, Yngvar. (2012) Development of biofouling on salmon cage nets and the effects of anti-fouling treatments on the survival of the hydroid(Ectopleura larynx) (Ellis & Solander, 1786). NTNU
Masters thesis

2011

Olsen, Yngvar. (2011) Resources for fish feed in future mariculture. Aquaculture Environment Interactions
Academic article
Olsen, Yngvar; Andersen, Tom; Gismervik, Ingrid; Vadstein, Olav. (2011) Marine heterotrophic bacteria, protozoan and metazoan zooplankton may experience protein N or mineral P limitation in coastal waters. Marine Ecology Progress Series
Academic article
Olsen, Yngvar; Hagemann, Andreas. (2011) Cold storage of eggs of Acartia tonsa Dana: effects of light, salinity and short-term temperature elevation on 48-h egg hatching success. Norges teknisk-naturvitenskapelige univesitet
Masters thesis
Olsen, Yngvar; Pudota, Jayaprabandh. (2011) Seasonal Variations in Biofouling and Plankton Community Connected to a Large Scale Salmon Farm. Norges teknisk-naturvitenskapelige univesitet
Masters thesis
Olsen, Yngvar; Ervik Kvalø, Stian. (2011) Lipid Composition in Antarctic krill, Euphausia superba. Norges teknisk-naturvitenskapelige univesitet
Masters thesis
Handå, Aleksander; Alver, Morten; Edvardsen, Christian Vik; Halstensen, Stein; Olsen, Anders Johny; Øie, Gunvor. (2011) Growth of farmed blue mussels (Mytilus edulis L.) in a Norwegian coastal area; comparison of food proxies by DEB modeling. Journal of Sea Research
Academic article
Øie, Gunvor; Reitan, Kjell Inge; Evjemo, Jan Ove; Støttrup, Josianne; Olsen, Yngvar. (2011) Live Feeds. John Wiley & Sons
Academic chapter/article/Conference paper
Fredriksen, Stein; Skjoldal, HR; Husa, Vivian; Olsen, Yngvar; Christie, Hartvig C; Dale, Trine. (2011) Vurdering av eutrofisituasjonen i kystområder, med særlig fokus på Hardangerfjorden og Boknafjorden. Fiskeri- og kystdepartementet (FKD)
Report

2010

Svarstad, Christian; Olsen, Yngvar; Evjemo, Jan Ove. (2010) Morphological and biochemical changes in late embryogenesis of European lobster (Homarus gammarus) with an emphasis on lipids and fatty acids. NTNU, Institutt for biologi
Masters thesis
Skogstad, Mette Erike; Olsen, Yngvar; Evjemo, Jan Ove. (2010) Effect of food concentration on growth, egg production and hatching success in Acartia tonsa (Copepoda: Calanoida) feeding on Rhodomonas baltica. NTNU, Institutt for biologi
Masters thesis
Nesse, Siv Iren; Olsen, Yngvar; Evjemo, Jan Ove. (2010) Kultivering av Acartia tonsa-nauplier til bruk i starforing av marine fiskelarver. Effekt av ulike dietter og kjølelagring. NTNU, Institutt for biologi
Masters thesis
Funderud, Jon; Olsen, Yngvar. (2010) Integrated Multi-Trophic Aquaculture of sea cucumber, abalone and kelp in Sanggou Bay, China. NTNU, Institutt for biologi
Masters thesis
Li, Keshuai; Olsen, Yngvar. (2010) Manipulation of the composition of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) of rotifers Brachionus sp. Nevada and Brachionus sp. Cayman. NTNU, Institutt for biologi
Masters thesis
Alver, Morten; Alfredsen, Jo Arve; Øie, Gunvor; Storøy, Werner; Olsen, Yngvar. (2010) Automatic control of growth and density in rotifer cultures. Aquacultural Engineering
Academic article
Attramadal, Kari; Buran, Astrid; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2010) Recirculation: Microbial Control Strategy For Intensive Marine Larviculture. Global Aquaculture Advocate
Article in business/trade/industry journal
Schaer, M; Olsen, Yngvar; Evjemo, Jan Ove. (2010) Growth, survival and lipid composition of European lobster (Homarus gammarus) larvae from different feeding regimes. NTNU, Institutt for biologi
Masters thesis

2009

Nysæther, Elin Marie Høyland; Olsen, Yngvar. (2009) Selective feeding in mangrove killifish (Kryptolebias marmoratus) and red sea bream (Pagrus major) larvae: The role of light intensity and the contrast of the prey. NTNU, Institutt for biologi
Masters thesis
Tøndel, Bjørnar; Olsen, Yngvar. (2009) Effekten av tilsats av alger og keramisk leire på vekstmiljø, vekst og overlevelse hos torskelarver (Gadus morhua). NTNU, Institutt for biologi
Masters thesis
Olsen, Yngvar. (2009) Lipids. Elsevier
Academic chapter/article/Conference paper
Duarte, Carlos; Holmer, Marianne; Olsen, Yngvar; Soto, Doris; Marba, Nuria; Guiu, Joana. (2009) Will the Oceans Help Feed Humanity?. BioScience
Academic article
Øie, Gunvor; Alver, Morten; Alfredsen, Jo Arve; Kjørsvik, Elin; Attramadal, Kari; Olsen, Yngvar. (2009) Status and challenges in cod larval production. Special Publications (European Aquaculture Society)
Abstract
Kjørsvik, Elin; Olsen, Cecilia; Wold, Per-Arvid; Hoehne-Reitan, Katja; Cahu, CL; Rainuzzo, J. (2009) Comparison of dietary phospholipids and neutral lipids on skeletal development and fatty acid composition in Atlantic cod (Gadus morhua). Aquaculture
Academic article
Olsen, Yngvar. (2009) Marine and Maritime Research and Education.
Other

2008

Etter, Siv Anina; Olsen, Yngvar. (2008) The importance of essential fatty acids for the somatic development of Calanus finmarchicus. NTNU, Institutt for biologi
Masters thesis
Olsen, Lasse Mork; Holmer, Marianne; Olsen, Yngvar. (2008) Perspectives of nutrient emission from of fish aquaculture in coastal waters. Literature review with evaluated state of knowledge. Fiskeri- og havbruksnæringens forskningsfond
Report
Olsen, Yngvar; Duarte, Carlos; Otterstad, Oddmund. (2008) Status and Future Perspectives of Marine Aquaculture. Springer Science+Business Media B.V.
Academic chapter/article/Conference paper
Olsen, Yngvar; Olsen, Lasse Mork. (2008) Environmental Impact of Aquaculture on Coastal Planktonic Ecosystems.
Academic chapter/article/Conference paper
Alver, Morten; Tennøy, Tormod; Alfredsen, Jo Arve; Øie, Gunvor; Olsen, Yngvar. (2008) Automatic control of rotifer density in larval first feeding tanks. Control Engineering Practice
Academic article
Evjemo, Jan Ove; Tokle, Nils Egil; Vadstein, Olav; Olsen, Yngvar. (2008) Effect of essential dietary fatty acids on egg production and hatching success of the marine copepod Temora longicornis. Journal of Experimental Marine Biology and Ecology
Academic article

2007

Langvatn, Vegard Aambø; Olsen, Yngvar. (2007) Byttedyrseleksjon hos torskelarvar (Gadus morhua). NTNU, Institutt for biologi
Thesis at a second degree level
Sigstadstø, Eirik Ruud; Olsen, Yngvar. (2007) Utvikling av startfôringsregime for hummerlarver (Homarus gammarus) fra klekking fram til stadium V. NTNU, Institutt for biologi
Thesis at a second degree level
Jensen, Bjørn; Olsen, Yngvar. (2007) Mineral P vekstbegrensning hos ciliater i norsk kystfarvann. NTNU, Institutt for biologi
Masters thesis
Andersen, Marianne; Olsen, Yngvar. (2007) Overlevelse og vekst av hummerlarver (Homarus gammarus) dyrket i et åpent system fôret med Artemia - nauplier. NTNU, Institutt for biologi
Masters thesis
Johnsen, Kristian Ivsett; Olsen, Yngvar. (2007) Overlevelse og vekst hos juvenil hummer (Homarus gammarus) ved ulike fôrregimer. NTNU, Institutt for biologi
Masters thesis
Olsen, Yngvar; Larssen, Harald. (2007) Betydning av DHA-innholdet i fosfolipidene til rotatorien Brachionus plicatilis for overlevelse og vekst hos torskelarver (Gadus morhua) ved tidlig startfôring. NTNU, Institutt for biologi
Masters thesis
Kui, Sunniva Wannebo; Olsen, Yngvar. (2007) Intensiv dyrkning og anvendelse to typer rotatorier (Brachionus plicatilis og Brachionus ibericus) i startfôring av torskelarver (Gadus morhua). NTNU, Institutt for biologi
Thesis at a second degree level
Olsen, Yngvar; Andersen, Tom; Gismervik, Ingrid; Vadstein, Olav. (2007) Protozoan and metazoan zooplankton-mediated carbon flows in nutrient-enriched coastal planktonic communities. Marine Ecology Progress Series
Academic article
Attramadal, Kari; Olsen, Yngvar; Vadstein, Olav; Salvesen, Ingrid. (2007) Clay particles offer alternative water treatment in marine fish larvae tanks. Global Aquaculture Advocate
Popular scientific article

2006

Høy, Erik; Olsen, Yngvar; Øie, Gunvor; Alfredsen, Jo Arve; Alver, Morten. (2006) Utvikling og testing av et system for automatisk regulering av rotatorietetthet i startfôring av marine fiskelarver. NTNU
Masters thesis
Løseth, Kjetil; Olsen, Yngvar. (2006) Ciliater sin betydning for karbonflyten i marine planktoniske næringsnett: betydningen av fødetilgang og predasjon. NTNU, Institutt for biologi
Thesis at a second degree level
Stibor, Herwig; Gelzleichter, Anna; Hantzsche, Florian; Sommer, Ulrich; Striebel, Maren; Vadstein, Olav. (2006) Combining dialysis and dilution techniques to estimate gross growth rate of phytoplankton and grazing by micro- and mesozooplankton in situ. Archiv für Hydrobiologie
Academic article
Sundt-Hansen, Line E.B.; Olsen, Yngvar; Stibor, Herwig; Heldal, Mikal; Vadstein, Olav. (2006) Trophic cascades mediated by copepods, not nutrient supply rate, determine the development of picocyanobacteria. Aquatic Microbial Ecology
Academic article
Alver, Morten; Alfredsen, Jo Arve; Olsen, Yngvar. (2006) An individual-based population model for rotifer (Brachionus plicatilis) cultures. Hydrobiologia
Academic article
Olsen, Atle Ivar; Olsen, Yngvar. (2006) CODTECH: a process oriented approach to intensive production of marine juveniles with main emphasis on cod. Årsrapport 2005. Codtech / NTNU
Report
Olsen, Yngvar; Agusti, Susana; Andersen, T.; Duarte, Carlos; Gasol, J. M.; Gismervik, Ingrid. (2006) A comparative study of responses in planktonic food web structure and function in contrasting European coastal waters exposed to experimental nutrient addition. Limnology and Oceanography
Academic article

2005

Leiknes, Øystein; Olsen, Yngvar. (2005) Vurdering av fosfor anvendt som biomassemål for dyreplankton. NTNU, Institutt for biologi
Thesis at a second degree level
Olsen, Yngvar. (2005) Balance between marine resources utilization and ecosystem sustainability, with main emphasise on extensive aquaculture and coastal eutrophication - Results from the MARICULT Research Programme (1996-2000). UiT Norges arktiske universitet
Academic chapter/article/Conference paper
Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2005) Assimilative carrying capacity: Contribution and impact on the pelagic system. Special Publications (European Aquaculture Society) (35)
Academic anthology/Conference proceedings
Børsheim, Knut Yngve; Vadstein, Olav; Myklestad, Sverre M.; Reinertsen, Helge; Kirkvold, Ståle; Olsen, Yngvar. (2005) Photosynthetic algal production, accumulation and release of phytoplankton storage carbohydrates and bacterial production in a gradient in daily nutrient supply. Journal of Plankton Research
Academic article
Olsen, Atle Ivar; Olsen, Yngvar. (2005) CODTECH: a process oriented approach to intensive production of marine juveniles with main emphasis on cod. Årsrapport 2004. Codtech / NTNU
Report
Attramadal, Kari; Salvesen, Ingrid; Vadstein, Olav; Olsen, Yngvar. (2005) Water quality and microbial environment in a flow through and recirculation system for intensive rearing of cod larvae (Gadus morhua L.). Special Publications (European Aquaculture Society)
Academic article
Attramadal, Kari; Xue, Renyu; Salvesen, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2005) Microbial environment in a flow-through and a recirculating system for intensive rearing of cod larvae (Gadus morhua L.). Special Publications (European Aquaculture Society)
Academic article
Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2005) Assimilative carrying capacity: Contribution and impact on the pelagic system. Special Publications (European Aquaculture Society)
Academic article

2004

Moksness, E.; Kjørsvik, E.; Olsen, Y.. (2004) Culture of Cold-water Marine Fish. Blackwell Science
Non-fiction book
Moksness, E; Kjørsvik, Elin; Olsen, Yngvar. (2004) Culture of cold-water marine fish. Wiley-Blackwell Publishing Inc. Wiley-Blackwell Publishing Inc.
Non-fiction book
Moksness, Erlend; Kjørsvik, Elin; Olsen, Yngvar. (2004) Culture of Cold-Water Marine Fish. Fishing News Books
Non-fiction book
Olsen, Yngvar. (2004) Live food technology of cold-water marine fish larvae. Wiley-Blackwell Publishing Inc.
Academic chapter/article/Conference paper
Olsen, Yngvar; van der Meeren, T; Reitan, Katja. (2004) First feeding technology. Wiley-Blackwell Publishing Inc.
Academic chapter/article/Conference paper
Moksness, Erlend; Kjørsvik, Elin; Olsen, Yngvar. (2004) Culture of Cold-water Marine Fish. Blackwell Publishing Blackwell Publishing
Non-fiction book
Vadstein, Olav; Stibor, Herwig; Lippert, Bettina; Loseth, K; Roederer, Wendy; Sundt-Hansen, Line E.B.. (2004) Moderate increase in the biomass of omnivorous copepods may ease grazing control of planktonic algae. Marine Ecology Progress Series
Academic article
Olsen, Atle Ivar; Olsen, Yngvar. (2004) CODTECH: a process oriented approach to intensive production of marine juveniles with main emphasis on cod. Årsrapport 2003. Codtech / NTNU
Report
Olsen, Yngvar; Endal, Anders. (2004) Harvesting the ocean. Encyclopedia of Life Support Systems
Academic article
Stibor, Herwig; Vadstein, Olav; Lippert, Bettina; Roederer, Wendy; Olsen, Yngvar. (2004) Calanoid copepods and nutrient enrichment determine population dynamics of the appendicularian Oikopleura dioica: a mesocosm experiment. Marine Ecology Progress Series
Academic article
Stibor, Herwig; Vadstein, Olav; Diehl, Sebastian; Gelzleichter, Anna; Hansen, Thomas; Hantzsche, Florian. (2004) Copepods act as a switch between alternative trophic cascades in marine pelagic food webs. Ecology Letters
Academic article

2003

Handå, Aleksander; McClimans, Thomas; Reitan, Kjell Inge; Olsen, Yngvar. (2003) Utredning over mulige strategier og tiltak for produksjon av giftfrie blåskjell i norske fjorder (Strategies to combat toxic algae, in Norwegian). SINTEF Ocean
Report
Handå, Aleksander; Fredheim, Arne; Lien, Egil; McClimans, Thomas; Reitan, Kjell Inge; Tangen, Karl. (2003) Bruk av luftbobling og neddykket ferskvannsutslipp som metode for produksjon av giftfrie blåskjell (Artificial upwelling to combat toxic algae - in Norwegian). SINTEF Ocean
Report
Evjemo, Jan Ove; Reitan, Kjell Inge; Olsen, Yngvar. (2003) Copepods as live food organisms in the rearing of Atlantic halibut (Hippoglossus hippoglossus L.) with special emphasis on nutritional value. Aquaculture
Academic article
Tocher, D. R.; Mourente, G; Van der Eechen, A; Evjemo, Jan Ove; Diaz, E; Wille, M. (2003) Comparative study of antioxidant defence mechanisms in marine fish fed variable levels of oxidised oil and vitamin E. Aquaculture International
Academic article
Gismervik, Ingrid; Vadstein, Olav; Olsen, Yngvar. (2003) Marine mesocosm Zooplankton response to nutrients. Scope Newsletter
Abstract

2002

Gismervik, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2002) Micro- and mesozooplankton response to enhanced nutrient input – a mesocosm study. Hydrobiologia
Academic article
Gismervik, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2002) Micro- and mesozooplankton response to enhanced nutrient input - a mesocosm study. Hydrobiologia
Academic article

2001

Reitan, Kjell Inge; Olsen, Yngvar; Øie, G; Reinertsen, Helge. (2001) Enhanced Nutrient Supply to Norwegian Coastal Waters: Effects on Growth of Scallops and Blue Mussels. C.C.-T. et al. (eds.) Spawning and maturation of aquaculture species, US-Japan Natural Resources Technical report (28)
Report
Tocher, D. R.; Mourente, G; Van der Eechen, A; Evjemo, Jan Ove; Diaz, E; Bell, J. G.. (2001) Effects of dietary vitamin E on the antioxidant defence mechanisms of juvenile turbot (Scophthalamus maximus L.), halibut (Hippoglossus hippoglossus L.) and sea bream (Sparus aurata L.). Aquaculture Nutrition
Academic article
Olsen, Yngvar; Reinertsen, Helge; Andersen, Tom; Gismervik, Ingrid; Duarte, Carlos; Agusti, Susana. (2001) Comparative analysis of food webs based on flow networks: effects of nutrient supply on structure and function of coastal plankton communities. Continental Shelf Research
Academic article

2000

Sakshaug, Egil; Olsen, Yngvar. (2000) Litt om økologi (A little about ecology). Tapir Akademisk Forlag
Academic chapter/article/Conference paper
Weltzien, Finn-Arne; Hemre, Gro Ingunn; Evjemo, Jan Ove; Olsen, Yngvar; Fyhn, Hans Jørgen. (2000) β-Hydroxybutyrate in developing nauplii of brine shrimp (Artemia franciscana K.) under fed and non-fed conditions. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology
Academic article
Evjemo, Jan Ove; Vadstein, Olav; Olsen, Yngvar. (2000) Feeding and assimilation kinetics of Artemia franciscana fed Isochrysis galbana (clone T. Iso). Marine Biology
Academic article
Olsen, Atle Ivar; Olsen, Yngvar; Attramada, Yngve; Christie, K; Birkbeck, T.H.; Skjermo, Jorunn. (2000) Effects of short term feeding of microalgae on the bacterial flora associated with juvenile Artemia fransiscana. Aquaculture
Academic article
Evjemo, Jan Ove; Danielsen, T. L.; Olsen, Yngvar. (2000) Stability of lipid, protein and n-3 fatty acids in enriched Artemia franciscana starved at different temperatures. Aquaculture
Academic article
Weltzien, Finn-Arne; Hemre, Gro-Ingunn; Evjemo, Jon Olav; olsen, Yngvar; Fyhn, Hans Jørgen. (2000) B-hydroxybutyrate in developing nauplii of brine shrimp (Artemia franciscana K.) under feeding and non-feeding conditions. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology
Academic article
Olsen, Yngvar; Vadstein, Olav; Sunde, Magne; Storøy, Jostein. (2000) Maten vår kommer fra havet. Norsk Fiskeoppdrett
Popular scientific article

1999

Weltzien, FA; Hemre, GI; Evjemo, JO; Olsen, Y; Fyhn, HJ. (1999) ß-Hydroxybutyrate in developing nauplii of brine shrimp (Artemia fransiscana K.) under fed and unfed conditions. Comparative biochemistry and physiology. B. Comparative biochemistry
Academic article
Olsen, Atle Ivar; Attramadal, Yngve; Jensen, Arne; Olsen, Yngvar. (1999) Influence of size and nutritional value of Artemia franciscana on growth and quality of halibut larvae (Hippoglossus hippoglossus) during the live feed period. Aquaculture
Academic article

1998

Olsen, Yngvar; Sandvik, Roar. (1998) Nitrogen and phosphorous supply to the coastal zone: status, possible biological effects and some future perspectives. In: KVA report 1998:1. Effec of nitrogen in the environment. KVA report
Academic article

1997

Skjoldal, Hein Rune; Aure, Jan; Bakke, Torgeir; Dahl, Finn Erik; Fredriksen, Stein; Gray, John Stuart. (1997) The Norwegian North Sea Coastal Water: Eutriphication; Status and trends. Statens forurensningstilsyn
Report
Øie, Gunvor; Makridis, Pavlos; Reitan, Kjell Inge; Olsen, Yngvar. (1997) Protein and carbon utilization of rotifers (Brachionus plicatilis) in first feeding of turbot larvae (Scophthalmus maximus L.). Aquaculture
Academic article
Reitan, Kjell Inge; Rainuzzo, Jose R.; Øie, Gunvor; Olsen, Yngvar. (1997) A review of the nutritional effects of algae in marine fish larvae. Aquaculture
Academic article
Rainuzzo, Jose R.; Reitan, Kjell Inge; Olsen, Yngvar. (1997) The significance of lipids at early stages of marine fish : a review. Aquaculture
Academic article
Øie, Gunvor; Makridis, Pavlos; Reitan, Kjell Inge; Olsen, Yngvar. (1997) Protein and carbon utilization of rotifers (Brachionus plicatilis) in first feeding of turbot larvae (Scophthalmus maximus L.). Aquaculture
Academic article
Olsen, Yngvar. (1997) Larval rearing technology of marine species in Norway. Hydrobiologia
Academic article
Øie, G.; Olsen, Yngvar. (1997) Protein and lipid content of the rotifer Brachionus plicatilis during variable growth and feeding conditions. Hydrobiologia
Academic article
Evjemo, J. O.; Coutteau, P.; Olsen, Yngvar; Sorgeloos, P.. (1997) The stability of docosahexanoic acid in two Artemia species following enrichment and subsequent starvation. Aquaculture
Academic article
Øie, G.; Makridis, P.; Reitan, K. I.; Olsen, Yngvar. (1997) Protein and carbon utilization of rotifers (Brachionus plicatilis) in first feeding of turbot larvea (Scophthalmus maximus L.). Aquaculture
Academic article
Olsen, A. I.; Jensen, A.; Evjemo, J. O.; Olsen, Yngvar. (1997) Effect of algal addition on stability of fatty acids in enriched Artemia franciscana. Hydrobiologia
Academic article
Reitan, K. I.; Rainuzzo, J. R.; Øie, G.; Olsen, Yngvar. (1997) A review of the nutritional effects of algae in marine fish larve. Aquaculture
Academic article
Evjemo, J. O.; Olsen, Yngvar. (1997) Lipid and fatty acid content in cultivated live feed organisms compared to marine copepods. Hydrobiologia
Academic article
Skjermo, J; Salvesen, I; Øie, G; Olsen, Yngvar; Vadstein, Olav. (1997) Microbially maturated water: a technique for selection of a non-opportunistic bacterial flora in water that may improve performance of marine larvae. Aquaculture International
Academic article
Lie, Ø.; Haaland, H.; Hemre, G. I.; Maage, A.; Lied, E.; Rosenlund, G.. (1997) Nutritional composition of rotifers following a change in diet from yeast and emulsified oil to microalgae. Aquaculture International
Academic article
Rainuzzo, J. R.; Reitan, K. I.; Olsen, Yngvar. (1997) The significance of lipids at early stages of marine fish, a review. Aquaculture
Academic article
Skjermo, J.; Salvesen, G.; Olsen, Yngvar; Vadstein, Olav. (1997) Microbially matured water: a technique for selection of a non-opportunistic bacterial flora in water that may improve performance of marine larvae. Aquaculture International
Academic article

1996

Olsen, Yngvar. (1996) Status for oppdrett av piggvar. Ny Fisk
Non-fiction book
Olsen, Yngvar. (1996) Forskningsprogrammet Maricult - om muligheter og begrensninger for økt produksjon av mat og råvarer i havet. Skrifter
Academic article

1995

Skjoldal, Hein Rune; Bakke, Torgeir; Dahl, Finn Erik; Fredriksen, Stein; Gray, John Stuart; Heldal, Mikal. (1995) Ytre Oslofjord: Eutrofitilstand, utvikling og forventede effekter av reduserte tilførsler av næringsalter. Statens forurensningstilsyn
Report
Sakshaug, Egil; Olsen, Yngvar; Hoell, E.. (1995) Maricult research programme: Fertilising marine ecosystems to harvest more. ICES CM Documents
Academic article
Skjermo, Jorunn; Defoort, Thomas; Dehasque, Marleen; Espevik, Terje; Olsen, Yngvar; Skjåk-Bræk, Gudmund. (1995) Immunostimulation of juvenile turbot (Scophthalmus maximus L.) using an alginate with high mannuronic acid content administered via the live food organism Artemia. Fish and Shellfish Immunology
Academic article

1986

Foss, P; Partali, Vassilia; Olsen, Yngvar; Liaaen-Jensen, Synnøve. (1986) new (2R)-2-Hydroxy-4-keto-b-type-carotenoids from daphnia magna (Crustaceae). Acta Chemica Scandinavica
Academic article

1985

Partali, Vassilia; Olsen, Yngvar; Foss, P; Liaaen-Jensen, Synnøve. (1985) Carotenoids in food chain studies. Zooplankton (Daphnia magna) response to a unialgal (Scenedesmus obliquus) carotenoid diet and two diets containing individual carotenoids. Comparative biochemistry and physiology. B. Comparative biochemistry
Academic article

1983

Sakshaug, Egil; Andresen, K.; Myklestad, Sverre M.; Olsen, Yngvar. (1983) Nutrient status of phytoplankton communities in Norwegian waters (marine, brackish, and fresh) as revealed by their chemical composition. Journal of Plankton Research
Academic article

Journal publications

Petersen, Magnus; Bjordal, Mari; Gjerstad, Marit; Kjerrgård, Ole Christian; Aspøy, Bjørn; James, Philip. (2023) Framtidas matproduksjon: Regjeringen spenner bein på egne mål. Nationen
Feature article
Wang, Chun-Deng; Olsen, Yngvar. (2023) Quantifying regional feed utilization, production and nutrient waste emission of Norwegian salmon cage aquaculture. Aquaculture Environment Interactions
Academic article
Vestrum, Ragnhild Inderberg; Forberg, Torunn; Luef, Birgit; Bakke, Ingrid; Winge, Per; Olsen, Yngvar. (2022) Commensal and opportunistic bacteria present in the microbiota in atlantic cod (Gadus morhua) larvae differentially alter the hosts’ innate immune responses. Microorganisms
Academic article
Guragain, Prashanna; Båtnes, Anna Solvang; Zobolas, John; Olsen, Yngvar; Bones, Atle M.; Winge, Per. (2022) IIb-RAD-sequencing coupled with random forest classification indicates regional population structuring and sex-specific differentiation in salmon lice (Lepeophtheirus salmonis). Ecology and Evolution
Academic article
Dong, Shuang-lin; Dong, Yun-wei; Cao, Ling; Verreth, Johan; Olsen, Yngvar; Liu, Wen-jing. (2022) Optimization of aquaculture sustainability through ecological intensification in China. Reviews in Aquaculture
Academic article
Erbs, Stefan; James, Philip; Boéchat, Céline; Ravagnan, Elisa; Sparboe, Lars Olav; Petersen, Magnus. (2021) Fiskeriministeren må dukke ned i taren. Bergens Tidende
Feature article
Guragain, Prashanna; Tkachov, Max; Båtnes, Anna Solvang; Olsen, Yngvar; Winge, Per; Bones, Atle M.. (2021) Principles and Methods of Counteracting Harmful Salmon–Arthropod Interactions in Salmon Farming: Addressing Possibilities, Limitations, and Future Options. Frontiers in Marine Science
Academic literature review
Nikouli, Eleni; Kormas, Konstantinos Ar.; Jin, Yang; Olsen, Yngvar; Bakke, Ingrid; Vadstein, Olav. (2021) Dietary Lipid Effects on Gut Microbiota of First Feeding Atlantic Salmon (Salmo salar L.). Frontiers in Marine Science
Academic article
Mathew, K Avarachen; Ardelan, Murat Van; Villa Gonzalez, Susana; Vadstein, Olav; Sajith Vezhapparambu, Veena; Leiknes, Øystein. (2021) Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation. Science of the Total Environment
Academic article
Jevne, Lone Sunniva; Guttu, Ane Maria; Båtnes, Anna Solvang; Olsen, Yngvar; Reitan, Kjell Inge. (2021) Planktonic and Parasitic Sea Lice Abundance on Three Commercial Salmon Farms in Norway Throughout a Production Cycle. Frontiers in Marine Science
Academic article
Forbord, Silje; Matsson, Sanna; Brodahl, Guri Ellila; Bluhm, Bodil; Broch, Ole Jacob; Handå, Aleksander. (2020) Latitudinal, seasonal and depth-dependent variation in growth, chemical composition and biofouling of cultivated Saccharina latissima (Phaeophyceae) along the Norwegian coast . Journal of Applied Phycology
Academic article
Jevne, Lone Sunniva; Forbord, Silje; Olsen, Yngvar. (2020) The Effect of Nutrient Availability and Light Conditions on the Growth and Intracellular Nitrogen Components of Land-Based Cultivated Saccharina latissima (Phaeophyta). Frontiers in Marine Science
Academic article
Guragain, Prashanna; Sporsheim, Bjørnar; Skjesol, Astrid; Båtnes, Anna Solvang; Olsen, Yngvar; Bones, Atle M.. (2020) Phenylalanine Hydroxylase RNAi Knockdown Negatively Affects Larval Development, Molting and Swimming Performance of Salmon Lice. Frontiers in Marine Science
Academic article
Forbord, Silje; Etter, Siv Anina; Broch, Ole Jacob; Dahlen, Vegard Rønning; Olsen, Yngvar. (2020) Initial short-term nitrate uptake in juvenile, cultivated Saccharina latissima (Phaeophyceae) of variable nutritional state . Aquatic Botany
Academic article
Jevne, Lone Sunniva; Øvrelid, Margrete Slåtsve; Hagemann, Andreas; Bloecher, Nina; Steinhovden, Kristine; Båtnes, Anna Solvang. (2020) Biofouling on salmon pen nets and cleaner fish shelters does not harbor planktonic stages of sea lice. Frontiers in Marine Science
Academic article
Jin, Yang; Olsen, Rolf Erik; Harvey, Thomas Nelson; Østensen, Mari-Ann; Li, Keshuai; Santi, Nina. (2020) Comparative transcriptomics reveals domestication‐associated features of Atlantic salmon lipid metabolism. Molecular Ecology
Academic article
Sanchez, Nicolas; Peterson, Claire Katja; Villa Gonzalez, Susana; Vadstein, Olav; Olsen, Yngvar; Ardelan, Murat Van. (2019) Effect of hydroxamate and catecholate siderophores on iron availability in the diatom Skeletonema costatum: Implications of siderophore degradation by associated bacteria. Marine Chemistry
Academic article
Jin, Yang; Angell, Inga Leena; Sandve, Simen Rød; Snipen, Lars-Gustav; Olsen, Yngvar; Rudi, Knut. (2019) Atlantic salmon raised with diets low in long-chain polyunsaturated n-3 fatty acids in freshwater have a Mycoplasma-dominated gut microbiota at sea. Aquaculture Environment Interactions
Academic article
Bergvik, Maria; Stensås, Lene; Handå, Aleksander; Reitan, Kjell Inge; Strand, Øivind; Olsen, Yngvar. (2019) Incorporation of feed and fecal waste from salmon aquaculture in great scallops (Pecten Maximus) co-fed by different algal concentrations. Frontiers in Marine Science
Academic article
Jalili, Mahsa; Jin, Yang; Bones, Atle M.; Olsen, Yngvar; Vadstein, Olav; Østensen, Mari-Ann. (2019) Dietary fatty acid source has little effect on the development of the immune system in the pyloric caeca of Atlantic salmon fry. Scientific Reports
Academic article
Tsagaraki, Tatiana Margo; Pree, Bernadette; Leiknes, Øystein; Larsen, Aud; Bratbak, Gunnar; Øvreås, Lise. (2018) Bacterial community composition responds to changes in copepod abundance and alters ecosystem function in an Arctic mesocosm study. The ISME Journal
Academic article
Vadstein, Olav; Attramadal, Kari; Bakke, Ingrid; Olsen, Yngvar. (2018) K-selection as microbial community management strategy: A method for improved viability of larvae in aquaculture. Frontiers in Microbiology
Academic literature review
Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.. (2018) Rearing water treatment induces microbial selection influencing the microbiota and pathogen associated transcripts of Cod (Gadus morhua) Larvae. Frontiers in Microbiology
Academic article
Jin, Yang; Olsen, Rolf Erik; Østensen, Mari-Ann; Gillard, Gareth Benjamin; Korsvoll, Sven Arild; Santi, Nina. (2018) Transcriptional development of phospholipid and lipoprotein metabolism in different intestinal regions of Atlantic salmon (Salmo salar) fry. BMC Genomics
Academic article
Vadstein, Olav; Attramadal, Kari; Bakke, Ingrid; Forberg, Torunn; Olsen, Yngvar; Verdegem, Marc. (2018) Managing the microbial community of marine fish larvae: a holistic perspective for larviculture. Frontiers in Microbiology
Academic literature review
Jin, Yang; Olsen, Rolf Erik; Gillard, Gareth B.; Østensen, Mari-Ann; Korsvoll, Sven A.; Santi, Nina. (2018) A systemic study of lipid metabolism regulation in salmon fingerlings and early juveniles fed plant oil. British Journal of Nutrition
Academic article
Sanchez, Nicolas; Brown, Eunice Nana Adjoa; Olsen, Yngvar; Vadstein, Olav; Iriarte, Jose Luis; Gonzalez, Humberto E.. (2018) Effect of Siderophore on Iron Availability in a Diatom and a Dinoflagellate Species: Contrasting Response in Associated Bacteria. Frontiers in Marine Science
Academic article
Fossberg, Julia; Forbord, Silje; Broch, Ole Jacob; Malzahn, Arne; Jansen, Henrice M; Handå, Aleksander. (2018) The potential for upscaling kelp (Saccharina latissima) cultivation in salmon-driven integrated multi-trophic aquaculture (IMTA). Frontiers in Marine Science
Academic article
Jin, Yang; Olsen, Rolf Erik; Østensen, Mari-Ann; Gillard, Gareth Benjamin; Li, Keshuai; Harvey, Thomas Nelson. (2018) Transcriptional regulation of lipid metabolism when salmon fry switches from endogenous to exogenous feeding. Aquaculture
Academic article
Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Bizsel, Can; Olsen, Yngvar. (2017) Responses in bacterial community structure to waste nutrients from aquaculture: an in situ microcosm experiment in a Chilean fjord. Aquaculture Environment Interactions
Academic article
Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Bizsel, Can; Olsen, Yngvar. (2017) Responses in the bacterial community structure to waste nutrients from aquaculture: an in situ microcosm experiment in a Chilean fjord. Aquaculture Environment Interactions
Academic article
Leiknes, Øystein; Etter, Siv Anina; Tokle, Nils E.; Bergvik, Maria; Vadstein, Olav; Olsen, Yngvar. (2016) The effect of essential fatty acids for the somatic growth in nauplii of Calanus finmarchicus. Frontiers in Marine Science
Academic article
Forberg, Torunn; Sjulstad, Eli Bjørnø; Bakke, Ingrid; Olsen, Yngvar; Hagiwara, Atsushi; Sakakura, Yoshitaka. (2016) Correlation between microbiota and growth in Mangrove Killifish (Kryptolebias marmoratus) and Atlantic cod (Gadus morhua). Scientific Reports
Academic article
Hagemann, Andreas; Øie, Gunvor; Evjemo, Jan Ove; Olsen, Yngvar. (2016) Effects of light and short-term temperature elevation on the 48-h hatching success of cold-stored Acartia tonsa Dana eggs. Aquaculture International
Academic article
Hagemann, Andreas; Vorren, Sigbjørn Hjetleland; Attramadal, Yngve; Evjemo, Jan Ove; Olsen, Yngvar. (2016) Effects of different wavelengths and intensities of visible light on the hatching success of Acartia tonsa Dana eggs. Aquaculture International
Academic article
Jin, Yang; Li, Keshuai; Olsen, Yngvar. (2016) Time kinetics of fatty acid changes in phospholipids following enrichment and starvation of Artemia franciscana with a main focus on docosahexaenoic acid. Aquaculture Nutrition
Academic article
Li, Keshuai; Olsen, Yngvar. (2015) Effect of enrichment time and dietary DHA and non-highly unsaturated fatty acid composition on the efficiency of DHA enrichment in phospholipid of rotifer (Brachionus Cayman). Aquaculture
Academic article
Olsen, Yngvar. (2015) How can mariculture better help feed humanity?. Frontiers in Marine Science
Academic article
Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bones, Atle M.. (2015) Gene regulation of lipid and phospholipid metabolism in Atlantic cod (Gadus morhua) larvae. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology
Academic article
Jansen, Henrice M; Handå, Aleksander; Cranford, Peter; Bannister, Raymond; Bergvik, Maria; Broch, Ole Jacob. (2015) EXPLOITATION OF NUTRIENTS FROM SALMON AQUACULTURE: WHAT IS THE POTENTIAL FOR IMTA IN NORWAY?. Journal of Shellfish Research
Short communication
Li, Keshuai; Kjørsvik, Elin; Bergvik, Maria; Olsen, Yngvar. (2015) Manipulation of the fatty acid composition of phosphatidylcholine and phosphatidylethanolamine in rotifers Brachionus Nevada and Brachionus Cayman. Aquaculture Nutrition
Academic article
Li, Keshuai; Olsen, Rolf Erik; Østensen, Mari-Ann; Altin, Dag; Kjørsvik, Elin; Olsen, Yngvar. (2015) Atlantic cod (Gadus morhua) larvae can biosynthesis phospholipid de novo from 2-oleoyl-glycerol and glycerol precursors. Fish Physiology & Biochemistry
Academic article
Olsen, Yngvar; Evjemo, Jan Ove; Kjørsvik, Elin; Larssen, Harald; Li, Keshuai; Overrein, Ingrid. (2014) DHA content in dietary phospholipids affects DHA content in phospholipids of cod larvae and larval performance. Aquaculture
Academic article
Olsen, Yngvar; Reinertsen, Helge; Sommer, Ulrich; Vadstein, Olav. (2014) Responses of biological and chemical components in North East Atlantic coastal water to experimental nitrogen and phosphorus addition - A full scale ecosystem study and its relevance for management. Science of the Total Environment
Academic article
Wang, Xinxin; Broch, Ole Jacob; Forbord, Silje; Handå, Aleksander; Skjermo, Jorunn; Reitan, Kjell Inge. (2014) Assimilation of inorganic nutrients from salmon (Salmo salar) farming by the macroalgae (Saccharina latissima) in an exposed coastal environment: Implications for integrated multi-trophic aquaculture. Journal of Applied Phycology
Academic article
Attramadal, Kari; Troung, Thi My Hanh; Bakke, Ingrid; Skjermo, Jorunn; Olsen, Yngvar; Vadstein, Olav. (2014) RAS and microbial maturation as tools for K-selection of microbial communities improve survival in cod larvae. Aquaculture
Academic article
Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Sanchez, Nicolas; Gonzalez, Humberto E.. (2014) Responses in the microbial food web to increased rates of nutrient supply in a southern Chilean fjord: Possible implications of cage aquaculture. Aquaculture Environment Interactions
Academic article
Luong, Anh D; De Laender, Frederik; Olsen, Yngvar; Vadstein, Olav; Dewulf, Jo; Janssen, Colin R.. (2014) Inferring time-variable effects of nutrient enrichment on marine ecosystems using inverse modelling and ecological network analysis. Science of the Total Environment
Academic article
Leiknes, Øystein; Striberny, Anja; Tokle, Nils Egil; Olsen, Yngvar; Vadstein, Olav; Sommer, Ulrich. (2014) Feeding selectivity of Calanus finmarchicus in the Trondheimsfjord. Journal of Sea Research
Academic article
Chauton, Matilde Skogen; Olsen, Yngvar; Vadstein, Olav. (2013) Biomass production from the microalga Phaeodactylum tricornutum: Nutrient stress and chemical composition in exponential fed-batch cultures. Biomass & Bioenergy
Academic article
Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bakke, Ingrid. (2013) Gene regulation of Atlantic cod (Gadus morhua) larvae with focus on lipid digestion and phospholipid metabolism. Communications in agricultural and applied biological sciences
Academic article
Handå, Aleksander; Forbord, Silje; Wang, Xinxin; Broch, Ole Jacob; Dahle, Stine Veronica Wiborg; Størseth, Trond Røvik. (2013) Seasonal- and depth-dependent growth of cultivated kelp (Saccharina latissima) in close proximity to salmon (Salmo salar) aquaculture in Norway. Aquaculture
Academic article
Blöcher, Nina; Olsen, Yngvar; Günther, Jana. (2013) Variability of biofouling communities on fish cage nets: A 1-year field study at a Norwegian salmon farm. Aquaculture
Academic article
Handå, Aleksander; Nordtug, Trond; Halstensen, Stein; Olsen, Anders Johny; Reitan, Kjell Inge; Olsen, Yngvar. (2013) Temperature-dependent feed requirements in farmed blue mussels (Mytilus edulis L.) estimated from soft tissue growth and oxygen consumption and ammonia-N excretion. Aquaculture Research
Academic article
Mühlroth, Alice; Li, Keshuai; Røkke, Gunvor; Winge, Per; Olsen, Yngvar; Hohmann-Marriott, Martin Frank. (2013) Pathways of Lipid Metabolism in Marine Algae, Co-Expression Network, Bottlenecks and Candidate Genes for Enhanced Production of EPA and DHA in Species of Chromista. Marine Drugs
Academic literature review
Vadstein, Olav; Bergh, Øivind; Gatesoupe, Francois-Joel; Galindo-Villegas, Jorge; Mulero, Victoriano; Picchietti, Simona. (2013) Microbiology and immunology of fish larvae. Reviews in Aquaculture
Academic literature review
Wang, Xinxin; Andresen, Kjersti; Handå, Aleksander; Jensen, Bjørn; Reitan, Kjell Inge; Olsen, Yngvar. (2013) Chemical composition and release rate of waste discharge from an Atlantic salmon farm with an evaluation of IMTA feasibility. Aquaculture Environment Interactions
Academic article
Broch, Ole Jacob; Ellingsen, Ingrid H.; Forbord, Silje; Wang, Xinxin; Volent, Zsolt; Alver, Morten. (2013) Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway. Aquaculture Environment Interactions
Academic article
Vadstein, Olav; Olsen, Yngvar. (2013) Trenger et kraftløft for fôr. Fiskaren
Interview Journal
Handå, Aleksander; McClimans, Thomas; Reitan, Kjell Inge; Knutsen, Øyvind; Tangen, Karl; Olsen, Yngvar. (2013) Artificial upwelling to stimulate growth of non-toxic algae in a habitat for mussel farming. Aquaculture Research
Academic article
Olsen, Yngvar; Almås, Karl Andreas. (2013) Laks med god smak. Adresseavisen
Feature article
Fredriksen, Stein; Husa, Vivian; Skjoldal, Hein Rune; Sjøtun, Kjersti; Christie, Hartvig C; Dale, Trine. (2012) Ingen regional overgjødsling på Vestlandet. Havforskningsrapporten
Popular scientific article
Attramadal, Kari; Salvesen, Ingrid; Xue, Renyu; Øie, Gunvor; Størseth, Trond Røvik; Vadstein, Olav. (2012) Recirculation as a possible microbial control strategy in the production of marine larvae. Aquacultural Engineering
Academic article
Attramadal, Kari; Tøndel, Bjørnar; Salvesen, Ingrid; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2012) Ceramic clay reduces the load of organic matter and bacteria in marine fish larval culture tanks. Aquacultural Engineering
Academic article
Handå, Aleksander; Ranheim, Anders Wanvik; Olsen, Anders Johny; Altin, Dag; Reitan, Kjell Inge; Olsen, Yngvar. (2012) Incorporation of salmon fish feed and feces components in mussels (Mytilus edulis): Implications for integrated multi-trophic aquaculture in cool-temperate North Atlantic waters. Aquaculture
Academic article
Handå, Aleksander; Min, Hojune; Wang, Xinxin; Broch, Ole Jacob; Reitan, Kjell Inge; Reinertsen, Helge. (2012) Incorporation of fish feed and growth of blue mussels (Mytilus edulis) in close proximity to salmon (Salmo salar) aquaculture: Implications for integrated multi-trophic aquaculture in Norwegian coastal waters. Aquaculture
Academic article
Vadstein, Olav; Andersen, Tom; Reinertsen, Helge; Olsen, Yngvar. (2012) Carbon, nitrogen and phosphorus resource supply and utilisation for coastal planktonic heterotrophic bacteria in a gradient of nutrient loading. Marine Ecology Progress Series
Academic article
Attramadal, Kari; Øie, Gunvor; Størseth, Trond Røvik; Alver, Morten; Vadstein, Olav; Olsen, Yngvar. (2012) The effects of moderate ozonation or high intensity UV-irradiation on the microbial environment in RAS for marine larvae. Aquaculture
Academic article
Bergvik, Maria; Leiknes, Øystein; Altin, Dag; Dahl, Kjersti Rennan; Olsen, Yngvar. (2012) Dynamics of the Lipid Content and Biomass of Calanus finmarchicus (copepodite V) in a Norwegian Fjord. Lipids
Academic article
Wang, Xinxin; Olsen, Lasse Mork; Reitan, Kjell Inge; Olsen, Yngvar. (2012) Discharge of nutrient wastes from salmon farms: environmental effects, and potential for integrated multi-trophic aquaculture. Aquaculture Environment Interactions
Academic literature review
Olsen, Yngvar. (2011) Resources for fish feed in future mariculture. Aquaculture Environment Interactions
Academic article
Olsen, Yngvar; Andersen, Tom; Gismervik, Ingrid; Vadstein, Olav. (2011) Marine heterotrophic bacteria, protozoan and metazoan zooplankton may experience protein N or mineral P limitation in coastal waters. Marine Ecology Progress Series
Academic article
Handå, Aleksander; Alver, Morten; Edvardsen, Christian Vik; Halstensen, Stein; Olsen, Anders Johny; Øie, Gunvor. (2011) Growth of farmed blue mussels (Mytilus edulis L.) in a Norwegian coastal area; comparison of food proxies by DEB modeling. Journal of Sea Research
Academic article
Alver, Morten; Alfredsen, Jo Arve; Øie, Gunvor; Storøy, Werner; Olsen, Yngvar. (2010) Automatic control of growth and density in rotifer cultures. Aquacultural Engineering
Academic article
Attramadal, Kari; Buran, Astrid; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2010) Recirculation: Microbial Control Strategy For Intensive Marine Larviculture. Global Aquaculture Advocate
Article in business/trade/industry journal
Duarte, Carlos; Holmer, Marianne; Olsen, Yngvar; Soto, Doris; Marba, Nuria; Guiu, Joana. (2009) Will the Oceans Help Feed Humanity?. BioScience
Academic article
Øie, Gunvor; Alver, Morten; Alfredsen, Jo Arve; Kjørsvik, Elin; Attramadal, Kari; Olsen, Yngvar. (2009) Status and challenges in cod larval production. Special Publications (European Aquaculture Society)
Abstract
Kjørsvik, Elin; Olsen, Cecilia; Wold, Per-Arvid; Hoehne-Reitan, Katja; Cahu, CL; Rainuzzo, J. (2009) Comparison of dietary phospholipids and neutral lipids on skeletal development and fatty acid composition in Atlantic cod (Gadus morhua). Aquaculture
Academic article
Alver, Morten; Tennøy, Tormod; Alfredsen, Jo Arve; Øie, Gunvor; Olsen, Yngvar. (2008) Automatic control of rotifer density in larval first feeding tanks. Control Engineering Practice
Academic article
Evjemo, Jan Ove; Tokle, Nils Egil; Vadstein, Olav; Olsen, Yngvar. (2008) Effect of essential dietary fatty acids on egg production and hatching success of the marine copepod Temora longicornis. Journal of Experimental Marine Biology and Ecology
Academic article
Olsen, Yngvar; Andersen, Tom; Gismervik, Ingrid; Vadstein, Olav. (2007) Protozoan and metazoan zooplankton-mediated carbon flows in nutrient-enriched coastal planktonic communities. Marine Ecology Progress Series
Academic article
Attramadal, Kari; Olsen, Yngvar; Vadstein, Olav; Salvesen, Ingrid. (2007) Clay particles offer alternative water treatment in marine fish larvae tanks. Global Aquaculture Advocate
Popular scientific article
Stibor, Herwig; Gelzleichter, Anna; Hantzsche, Florian; Sommer, Ulrich; Striebel, Maren; Vadstein, Olav. (2006) Combining dialysis and dilution techniques to estimate gross growth rate of phytoplankton and grazing by micro- and mesozooplankton in situ. Archiv für Hydrobiologie
Academic article
Sundt-Hansen, Line E.B.; Olsen, Yngvar; Stibor, Herwig; Heldal, Mikal; Vadstein, Olav. (2006) Trophic cascades mediated by copepods, not nutrient supply rate, determine the development of picocyanobacteria. Aquatic Microbial Ecology
Academic article
Alver, Morten; Alfredsen, Jo Arve; Olsen, Yngvar. (2006) An individual-based population model for rotifer (Brachionus plicatilis) cultures. Hydrobiologia
Academic article
Olsen, Yngvar; Agusti, Susana; Andersen, T.; Duarte, Carlos; Gasol, J. M.; Gismervik, Ingrid. (2006) A comparative study of responses in planktonic food web structure and function in contrasting European coastal waters exposed to experimental nutrient addition. Limnology and Oceanography
Academic article
Børsheim, Knut Yngve; Vadstein, Olav; Myklestad, Sverre M.; Reinertsen, Helge; Kirkvold, Ståle; Olsen, Yngvar. (2005) Photosynthetic algal production, accumulation and release of phytoplankton storage carbohydrates and bacterial production in a gradient in daily nutrient supply. Journal of Plankton Research
Academic article
Attramadal, Kari; Salvesen, Ingrid; Vadstein, Olav; Olsen, Yngvar. (2005) Water quality and microbial environment in a flow through and recirculation system for intensive rearing of cod larvae (Gadus morhua L.). Special Publications (European Aquaculture Society)
Academic article
Attramadal, Kari; Xue, Renyu; Salvesen, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2005) Microbial environment in a flow-through and a recirculating system for intensive rearing of cod larvae (Gadus morhua L.). Special Publications (European Aquaculture Society)
Academic article
Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2005) Assimilative carrying capacity: Contribution and impact on the pelagic system. Special Publications (European Aquaculture Society)
Academic article
Vadstein, Olav; Stibor, Herwig; Lippert, Bettina; Loseth, K; Roederer, Wendy; Sundt-Hansen, Line E.B.. (2004) Moderate increase in the biomass of omnivorous copepods may ease grazing control of planktonic algae. Marine Ecology Progress Series
Academic article
Olsen, Yngvar; Endal, Anders. (2004) Harvesting the ocean. Encyclopedia of Life Support Systems
Academic article
Stibor, Herwig; Vadstein, Olav; Lippert, Bettina; Roederer, Wendy; Olsen, Yngvar. (2004) Calanoid copepods and nutrient enrichment determine population dynamics of the appendicularian Oikopleura dioica: a mesocosm experiment. Marine Ecology Progress Series
Academic article
Stibor, Herwig; Vadstein, Olav; Diehl, Sebastian; Gelzleichter, Anna; Hansen, Thomas; Hantzsche, Florian. (2004) Copepods act as a switch between alternative trophic cascades in marine pelagic food webs. Ecology Letters
Academic article
Evjemo, Jan Ove; Reitan, Kjell Inge; Olsen, Yngvar. (2003) Copepods as live food organisms in the rearing of Atlantic halibut (Hippoglossus hippoglossus L.) with special emphasis on nutritional value. Aquaculture
Academic article
Tocher, D. R.; Mourente, G; Van der Eechen, A; Evjemo, Jan Ove; Diaz, E; Wille, M. (2003) Comparative study of antioxidant defence mechanisms in marine fish fed variable levels of oxidised oil and vitamin E. Aquaculture International
Academic article
Gismervik, Ingrid; Vadstein, Olav; Olsen, Yngvar. (2003) Marine mesocosm Zooplankton response to nutrients. Scope Newsletter
Abstract
Gismervik, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2002) Micro- and mesozooplankton response to enhanced nutrient input – a mesocosm study. Hydrobiologia
Academic article
Gismervik, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2002) Micro- and mesozooplankton response to enhanced nutrient input - a mesocosm study. Hydrobiologia
Academic article
Tocher, D. R.; Mourente, G; Van der Eechen, A; Evjemo, Jan Ove; Diaz, E; Bell, J. G.. (2001) Effects of dietary vitamin E on the antioxidant defence mechanisms of juvenile turbot (Scophthalamus maximus L.), halibut (Hippoglossus hippoglossus L.) and sea bream (Sparus aurata L.). Aquaculture Nutrition
Academic article
Olsen, Yngvar; Reinertsen, Helge; Andersen, Tom; Gismervik, Ingrid; Duarte, Carlos; Agusti, Susana. (2001) Comparative analysis of food webs based on flow networks: effects of nutrient supply on structure and function of coastal plankton communities. Continental Shelf Research
Academic article
Weltzien, Finn-Arne; Hemre, Gro Ingunn; Evjemo, Jan Ove; Olsen, Yngvar; Fyhn, Hans Jørgen. (2000) β-Hydroxybutyrate in developing nauplii of brine shrimp (Artemia franciscana K.) under fed and non-fed conditions. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology
Academic article
Evjemo, Jan Ove; Vadstein, Olav; Olsen, Yngvar. (2000) Feeding and assimilation kinetics of Artemia franciscana fed Isochrysis galbana (clone T. Iso). Marine Biology
Academic article
Olsen, Atle Ivar; Olsen, Yngvar; Attramada, Yngve; Christie, K; Birkbeck, T.H.; Skjermo, Jorunn. (2000) Effects of short term feeding of microalgae on the bacterial flora associated with juvenile Artemia fransiscana. Aquaculture
Academic article
Evjemo, Jan Ove; Danielsen, T. L.; Olsen, Yngvar. (2000) Stability of lipid, protein and n-3 fatty acids in enriched Artemia franciscana starved at different temperatures. Aquaculture
Academic article
Weltzien, Finn-Arne; Hemre, Gro-Ingunn; Evjemo, Jon Olav; olsen, Yngvar; Fyhn, Hans Jørgen. (2000) B-hydroxybutyrate in developing nauplii of brine shrimp (Artemia franciscana K.) under feeding and non-feeding conditions. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology
Academic article
Olsen, Yngvar; Vadstein, Olav; Sunde, Magne; Storøy, Jostein. (2000) Maten vår kommer fra havet. Norsk Fiskeoppdrett
Popular scientific article
Weltzien, FA; Hemre, GI; Evjemo, JO; Olsen, Y; Fyhn, HJ. (1999) ß-Hydroxybutyrate in developing nauplii of brine shrimp (Artemia fransiscana K.) under fed and unfed conditions. Comparative biochemistry and physiology. B. Comparative biochemistry
Academic article
Olsen, Atle Ivar; Attramadal, Yngve; Jensen, Arne; Olsen, Yngvar. (1999) Influence of size and nutritional value of Artemia franciscana on growth and quality of halibut larvae (Hippoglossus hippoglossus) during the live feed period. Aquaculture
Academic article
Olsen, Yngvar; Sandvik, Roar. (1998) Nitrogen and phosphorous supply to the coastal zone: status, possible biological effects and some future perspectives. In: KVA report 1998:1. Effec of nitrogen in the environment. KVA report
Academic article
Øie, Gunvor; Makridis, Pavlos; Reitan, Kjell Inge; Olsen, Yngvar. (1997) Protein and carbon utilization of rotifers (Brachionus plicatilis) in first feeding of turbot larvae (Scophthalmus maximus L.). Aquaculture
Academic article
Reitan, Kjell Inge; Rainuzzo, Jose R.; Øie, Gunvor; Olsen, Yngvar. (1997) A review of the nutritional effects of algae in marine fish larvae. Aquaculture
Academic article
Rainuzzo, Jose R.; Reitan, Kjell Inge; Olsen, Yngvar. (1997) The significance of lipids at early stages of marine fish : a review. Aquaculture
Academic article
Øie, Gunvor; Makridis, Pavlos; Reitan, Kjell Inge; Olsen, Yngvar. (1997) Protein and carbon utilization of rotifers (Brachionus plicatilis) in first feeding of turbot larvae (Scophthalmus maximus L.). Aquaculture
Academic article
Olsen, Yngvar. (1997) Larval rearing technology of marine species in Norway. Hydrobiologia
Academic article
Øie, G.; Olsen, Yngvar. (1997) Protein and lipid content of the rotifer Brachionus plicatilis during variable growth and feeding conditions. Hydrobiologia
Academic article
Evjemo, J. O.; Coutteau, P.; Olsen, Yngvar; Sorgeloos, P.. (1997) The stability of docosahexanoic acid in two Artemia species following enrichment and subsequent starvation. Aquaculture
Academic article
Øie, G.; Makridis, P.; Reitan, K. I.; Olsen, Yngvar. (1997) Protein and carbon utilization of rotifers (Brachionus plicatilis) in first feeding of turbot larvea (Scophthalmus maximus L.). Aquaculture
Academic article
Olsen, A. I.; Jensen, A.; Evjemo, J. O.; Olsen, Yngvar. (1997) Effect of algal addition on stability of fatty acids in enriched Artemia franciscana. Hydrobiologia
Academic article
Reitan, K. I.; Rainuzzo, J. R.; Øie, G.; Olsen, Yngvar. (1997) A review of the nutritional effects of algae in marine fish larve. Aquaculture
Academic article
Evjemo, J. O.; Olsen, Yngvar. (1997) Lipid and fatty acid content in cultivated live feed organisms compared to marine copepods. Hydrobiologia
Academic article
Skjermo, J; Salvesen, I; Øie, G; Olsen, Yngvar; Vadstein, Olav. (1997) Microbially maturated water: a technique for selection of a non-opportunistic bacterial flora in water that may improve performance of marine larvae. Aquaculture International
Academic article
Lie, Ø.; Haaland, H.; Hemre, G. I.; Maage, A.; Lied, E.; Rosenlund, G.. (1997) Nutritional composition of rotifers following a change in diet from yeast and emulsified oil to microalgae. Aquaculture International
Academic article
Rainuzzo, J. R.; Reitan, K. I.; Olsen, Yngvar. (1997) The significance of lipids at early stages of marine fish, a review. Aquaculture
Academic article
Skjermo, J.; Salvesen, G.; Olsen, Yngvar; Vadstein, Olav. (1997) Microbially matured water: a technique for selection of a non-opportunistic bacterial flora in water that may improve performance of marine larvae. Aquaculture International
Academic article
Olsen, Yngvar. (1996) Forskningsprogrammet Maricult - om muligheter og begrensninger for økt produksjon av mat og råvarer i havet. Skrifter
Academic article
Sakshaug, Egil; Olsen, Yngvar; Hoell, E.. (1995) Maricult research programme: Fertilising marine ecosystems to harvest more. ICES CM Documents
Academic article
Skjermo, Jorunn; Defoort, Thomas; Dehasque, Marleen; Espevik, Terje; Olsen, Yngvar; Skjåk-Bræk, Gudmund. (1995) Immunostimulation of juvenile turbot (Scophthalmus maximus L.) using an alginate with high mannuronic acid content administered via the live food organism Artemia. Fish and Shellfish Immunology
Academic article
Foss, P; Partali, Vassilia; Olsen, Yngvar; Liaaen-Jensen, Synnøve. (1986) new (2R)-2-Hydroxy-4-keto-b-type-carotenoids from daphnia magna (Crustaceae). Acta Chemica Scandinavica
Academic article
Partali, Vassilia; Olsen, Yngvar; Foss, P; Liaaen-Jensen, Synnøve. (1985) Carotenoids in food chain studies. Zooplankton (Daphnia magna) response to a unialgal (Scenedesmus obliquus) carotenoid diet and two diets containing individual carotenoids. Comparative biochemistry and physiology. B. Comparative biochemistry
Academic article
Sakshaug, Egil; Andresen, K.; Myklestad, Sverre M.; Olsen, Yngvar. (1983) Nutrient status of phytoplankton communities in Norwegian waters (marine, brackish, and fresh) as revealed by their chemical composition. Journal of Plankton Research
Academic article

Books

Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2005) Assimilative carrying capacity: Contribution and impact on the pelagic system. Special Publications (European Aquaculture Society) (35)
Academic anthology/Conference proceedings
Moksness, E.; Kjørsvik, E.; Olsen, Y.. (2004) Culture of Cold-water Marine Fish. Blackwell Science
Non-fiction book
Moksness, E; Kjørsvik, Elin; Olsen, Yngvar. (2004) Culture of cold-water marine fish. Wiley-Blackwell Publishing Inc. Wiley-Blackwell Publishing Inc.
Non-fiction book
Moksness, Erlend; Kjørsvik, Elin; Olsen, Yngvar. (2004) Culture of Cold-Water Marine Fish. Fishing News Books
Non-fiction book
Moksness, Erlend; Kjørsvik, Elin; Olsen, Yngvar. (2004) Culture of Cold-water Marine Fish. Blackwell Publishing Blackwell Publishing
Non-fiction book
Olsen, Yngvar. (1996) Status for oppdrett av piggvar. Ny Fisk
Non-fiction book

Part of book/report

Fotland, Elisabeth; Olsen, Yngvar. (2020) Energy consumption in the free-living stages of salmon lice (Lepeophtheirus salmonis). NTNU
Magister thesis
Li, Keshuai; Olsen, Rolf Erik; Jin, Yang; Olsen, Yngvar. (2018) Phospholipids in Marine Larval Rearing. Springer
Chapter
Olsen, Yngvar. (2013) A synthesis of the technical, environmental, spatial and governance issues and opportunities. Food and Agriculture Organization of the United Nations (FAO)
Chapter
Olsen, Yngvar. (2013) Ecological principles and options for seafood production. Novus Forlag
Academic chapter/article/Conference paper
Olsen, Yngvar; Tokle, Nils Egil; Vadstein, Olav. (2012) Hvordan forvalte vannmassene? Om samspillet mellom næringssalt-utslipp og det planktoniske økosystemet. Universitetsforlaget
Academic chapter/article/Conference paper
Øie, Gunvor; Reitan, Kjell Inge; Evjemo, Jan Ove; Støttrup, Josianne; Olsen, Yngvar. (2011) Live Feeds. John Wiley & Sons
Academic chapter/article/Conference paper
Olsen, Yngvar. (2009) Lipids. Elsevier
Academic chapter/article/Conference paper
Olsen, Yngvar. (2009) Marine and Maritime Research and Education.
Other
Olsen, Yngvar; Duarte, Carlos; Otterstad, Oddmund. (2008) Status and Future Perspectives of Marine Aquaculture. Springer Science+Business Media B.V.
Academic chapter/article/Conference paper
Olsen, Yngvar; Olsen, Lasse Mork. (2008) Environmental Impact of Aquaculture on Coastal Planktonic Ecosystems.
Academic chapter/article/Conference paper
Olsen, Yngvar. (2005) Balance between marine resources utilization and ecosystem sustainability, with main emphasise on extensive aquaculture and coastal eutrophication - Results from the MARICULT Research Programme (1996-2000). UiT Norges arktiske universitet
Academic chapter/article/Conference paper
Olsen, Yngvar. (2004) Live food technology of cold-water marine fish larvae. Wiley-Blackwell Publishing Inc.
Academic chapter/article/Conference paper
Olsen, Yngvar; van der Meeren, T; Reitan, Katja. (2004) First feeding technology. Wiley-Blackwell Publishing Inc.
Academic chapter/article/Conference paper
Sakshaug, Egil; Olsen, Yngvar. (2000) Litt om økologi (A little about ecology). Tapir Akademisk Forlag
Academic chapter/article/Conference paper

Report

Hancke, Kasper; Broch, Ole Jacob; Olsen, Yngvar; Bekkby, Trine; Hansen, Pia Kupka; Fieler, Reinhold. (2021) Miljøpåvirkninger av taredyrking og forslag til utvikling av overvåkingsprogram. NIVA-rapport (7589)
Report
Rebekka, Andersen; Olsen, Yngvar. (2020) The Effect of Natural and Artificial Light on in situ Vertical Migration of Salmon Lice (Lepeophtheirus salmonis) Copepodids. NTNU
Masters thesis
Gaasø, Maria; Olsen, Yngvar. (2020) Sea lice (Lepeophtheirus salmonis and Caligus elongatus) during freshwater treatment. NTNU
Masters thesis
Foldal, Solveig; Olsen, Yngvar. (2018) Morfologiske relasjonar til dyrka Saccharina latissima ved tre stasjonar langs Norskekysten. NTNU
Masters thesis
Brodahl, Guri Ellila; Olsen, Yngvar. (2018) The effects of variable environmental conditions on growth, nutritional state and protein content in cultivated Saccharina latissima in Norway. NTNU
Masters thesis
Bjørndal Njåstad, Elin; Olsen, Yngvar. (2018) Influence of food availability and nutritional state of macroalgae on development of fouling bryozoans on cultivated Saccharina latissima. NTNU
Masters thesis
Løland, Anders; Omholt, Stig William; Lamberg, Anders; Kristensen, Torstein; Urke, Henning Andre; Olsen, Yngvar. (2016) Metodevurdering for registrering rømt oppdrettslaks. NTNU, Institutt for biologi
Report
Slatlem, Karina; Olsen, Yngvar. (2016) Saccharina latissima, effekt av utskiftningsintervall av medium for vegetative gametofytter og utsåingstetthet på vekst, samt stresstester av kimplanter. NTNU, Institutt for biologi
Masters thesis
Li, Keshuai; Olsen, Yngvar; Kjørsvik, Elin. (2015) Phospholipids in Atlantic cod (Gadus morhua L.) larvae rearing: Incorporation of DHA in live feed and larval phospholipids and the metabolic capabilities of larvae for de novo synthesis. Institutt for biologi, NTNU
Doctoral dissertation
Brown, Eunice Nana Adjoa; Ardelan, Murat Van; Olsen, Yngvar. (2015) Use of phytoplankton culture and multianalytical techniques to understand the effects of the organic molecule, siderophore on species specific bioavailability of iron. NTNU
Masters thesis
Jevne, Lone; Olsen, Yngvar. (2015) Proteininnhold og vekst for Saccharina latissima dyrket ved varierende tilførsel av nitrat og lys. NTNU
Masters thesis
Skjermo, Jorunn; Aasen, Inga Marie; Arff, Johanne; Broch, Ole Jacob; Carvajal, Ana Karina; Christie, Hartvig C. (2014) A new Norwegian bioeconomy based on cultivation and processing of seaweeds: Opportunities and R&D needs. SINTEF Fisheries and Aquaculture
Report
Skrove, Tale; Olsen, Yngvar; Funderud, Jon. (2014) Effekten av næringssaltutslepp frå oppdrettsanlegg på fytoplanktonsamfunn i Sør-Trøndelag. NTNU
Masters thesis
Zhou, Renbin; Olsen, Yngvar. (2014) A study of the influence of nitrate supply on intracellular protein and nitrogen components in the kelp Saccharina latissima. NTNU
Masters thesis
Tønder, Tine; Olsen, Yngvar; Funderud, Jon. (2014) A Study of the Seasonal Variation in Biochemical Composition of Saccharina latissima. NTNU
Masters thesis
Hjetland Vorren, Sigbjørn; Olsen, Yngvar; Evjemo, Jan Ove. (2014) Effekten av to synlig lys modaliteter og røntgen på klekkesuksessen hos Acartia tonsa-egg. NTNU
Masters thesis
Leivestad Fossberg, Julia; Olsen, Yngvar. (2014) Seasonal changes in growth and composition of the kelp Saccharina latissima cultivated in salmon-driven IMTA. NTNU
Masters thesis
Singsaas, Katrine; Olsen, Yngvar. (2014) Kjemisk desinfisering av egg til copepoden Acartia tonsa. NTNU
Masters thesis
Stensås, Lene; Olsen, Yngvar; Bergvik, Maria. (2014) Assimilation of salmon feed and salmon feces by the great scallop (Pecten maximus). NTNU
Masters thesis
Li, Hoang Bao Chau; Olsen, Yngvar. (2013) Biochemical composition of Rhodomonas baltica as a function of the dilution rate during steady rate of growth. NTNU
Masters thesis
Salveson, Erik; Olsen, Yngvar. (2013) Effects of copepod density and water exchange on the egg production of Acartia tonsa Dana (Copepoda: Calanoida)feeding on Rhodomonas baltica. NTNU
Masters thesis
Nguyen, Thi Mai Thao; Olsen, Yngvar. (2013) NUTRIENT EMISSION AND PELAGIC ECOSYSTEM EFFECT OF SALMON AQUACULTURE IN THE NORD-MØRE REGION. NTNU
Masters thesis
Yang, Jin; Olsen, Yngvar; Li, Keshuai. (2013) Time kinetics of fatty acids changes in total lipids and phospholipids of A.franciscana following enrichment and starvation, with a main focus on docosahexaenoic acid (DHA). NTNU
Masters thesis
Maren, Løken; Olsen, Yngvar. (2013) Virkningen av økte næringssaltutslipp fra akvakultur på strukturen i planteplanktonsamfunnet. NTNU
Masters thesis
Matsson, Sanna; Olsen, Yngvar. (2013) Optimal physical and chemical environment for vegetative gametophyte culture of Saccharina latissima - with emphasis on nutrient composition and light quality. NTNU
Masters thesis
Jensen, Ingvil Nortier; Olsen, Yngvar. (2012) The Effect of Nutrient Release from Fish Farms on the Lower Trophic Levels of the Marine Food Web in North Patagonia, Chile. NTNU
Masters thesis
Kjølbo Rød, Kaia; Olsen, Yngvar. (2012) Sori disinfection in cultivation of Saccharina latissima. Evaluation of chemical treatments against diatom contamination. NTNU
Masters thesis
Kassah, Jemimah Etornam; Olsen, Yngvar. (2012) Development of biofouling on salmon cage nets and the effects of anti-fouling treatments on the survival of the hydroid(Ectopleura larynx) (Ellis & Solander, 1786). NTNU
Masters thesis
Olsen, Yngvar; Hagemann, Andreas. (2011) Cold storage of eggs of Acartia tonsa Dana: effects of light, salinity and short-term temperature elevation on 48-h egg hatching success. Norges teknisk-naturvitenskapelige univesitet
Masters thesis
Olsen, Yngvar; Pudota, Jayaprabandh. (2011) Seasonal Variations in Biofouling and Plankton Community Connected to a Large Scale Salmon Farm. Norges teknisk-naturvitenskapelige univesitet
Masters thesis
Olsen, Yngvar; Ervik Kvalø, Stian. (2011) Lipid Composition in Antarctic krill, Euphausia superba. Norges teknisk-naturvitenskapelige univesitet
Masters thesis
Fredriksen, Stein; Skjoldal, HR; Husa, Vivian; Olsen, Yngvar; Christie, Hartvig C; Dale, Trine. (2011) Vurdering av eutrofisituasjonen i kystområder, med særlig fokus på Hardangerfjorden og Boknafjorden. Fiskeri- og kystdepartementet (FKD)
Report
Svarstad, Christian; Olsen, Yngvar; Evjemo, Jan Ove. (2010) Morphological and biochemical changes in late embryogenesis of European lobster (Homarus gammarus) with an emphasis on lipids and fatty acids. NTNU, Institutt for biologi
Masters thesis
Skogstad, Mette Erike; Olsen, Yngvar; Evjemo, Jan Ove. (2010) Effect of food concentration on growth, egg production and hatching success in Acartia tonsa (Copepoda: Calanoida) feeding on Rhodomonas baltica. NTNU, Institutt for biologi
Masters thesis
Nesse, Siv Iren; Olsen, Yngvar; Evjemo, Jan Ove. (2010) Kultivering av Acartia tonsa-nauplier til bruk i starforing av marine fiskelarver. Effekt av ulike dietter og kjølelagring. NTNU, Institutt for biologi
Masters thesis
Funderud, Jon; Olsen, Yngvar. (2010) Integrated Multi-Trophic Aquaculture of sea cucumber, abalone and kelp in Sanggou Bay, China. NTNU, Institutt for biologi
Masters thesis
Li, Keshuai; Olsen, Yngvar. (2010) Manipulation of the composition of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) of rotifers Brachionus sp. Nevada and Brachionus sp. Cayman. NTNU, Institutt for biologi
Masters thesis
Schaer, M; Olsen, Yngvar; Evjemo, Jan Ove. (2010) Growth, survival and lipid composition of European lobster (Homarus gammarus) larvae from different feeding regimes. NTNU, Institutt for biologi
Masters thesis
Nysæther, Elin Marie Høyland; Olsen, Yngvar. (2009) Selective feeding in mangrove killifish (Kryptolebias marmoratus) and red sea bream (Pagrus major) larvae: The role of light intensity and the contrast of the prey. NTNU, Institutt for biologi
Masters thesis
Tøndel, Bjørnar; Olsen, Yngvar. (2009) Effekten av tilsats av alger og keramisk leire på vekstmiljø, vekst og overlevelse hos torskelarver (Gadus morhua). NTNU, Institutt for biologi
Masters thesis
Etter, Siv Anina; Olsen, Yngvar. (2008) The importance of essential fatty acids for the somatic development of Calanus finmarchicus. NTNU, Institutt for biologi
Masters thesis
Olsen, Lasse Mork; Holmer, Marianne; Olsen, Yngvar. (2008) Perspectives of nutrient emission from of fish aquaculture in coastal waters. Literature review with evaluated state of knowledge. Fiskeri- og havbruksnæringens forskningsfond
Report
Langvatn, Vegard Aambø; Olsen, Yngvar. (2007) Byttedyrseleksjon hos torskelarvar (Gadus morhua). NTNU, Institutt for biologi
Thesis at a second degree level
Sigstadstø, Eirik Ruud; Olsen, Yngvar. (2007) Utvikling av startfôringsregime for hummerlarver (Homarus gammarus) fra klekking fram til stadium V. NTNU, Institutt for biologi
Thesis at a second degree level
Jensen, Bjørn; Olsen, Yngvar. (2007) Mineral P vekstbegrensning hos ciliater i norsk kystfarvann. NTNU, Institutt for biologi
Masters thesis
Andersen, Marianne; Olsen, Yngvar. (2007) Overlevelse og vekst av hummerlarver (Homarus gammarus) dyrket i et åpent system fôret med Artemia - nauplier. NTNU, Institutt for biologi
Masters thesis
Johnsen, Kristian Ivsett; Olsen, Yngvar. (2007) Overlevelse og vekst hos juvenil hummer (Homarus gammarus) ved ulike fôrregimer. NTNU, Institutt for biologi
Masters thesis
Olsen, Yngvar; Larssen, Harald. (2007) Betydning av DHA-innholdet i fosfolipidene til rotatorien Brachionus plicatilis for overlevelse og vekst hos torskelarver (Gadus morhua) ved tidlig startfôring. NTNU, Institutt for biologi
Masters thesis
Kui, Sunniva Wannebo; Olsen, Yngvar. (2007) Intensiv dyrkning og anvendelse to typer rotatorier (Brachionus plicatilis og Brachionus ibericus) i startfôring av torskelarver (Gadus morhua). NTNU, Institutt for biologi
Thesis at a second degree level
Høy, Erik; Olsen, Yngvar; Øie, Gunvor; Alfredsen, Jo Arve; Alver, Morten. (2006) Utvikling og testing av et system for automatisk regulering av rotatorietetthet i startfôring av marine fiskelarver. NTNU
Masters thesis
Løseth, Kjetil; Olsen, Yngvar. (2006) Ciliater sin betydning for karbonflyten i marine planktoniske næringsnett: betydningen av fødetilgang og predasjon. NTNU, Institutt for biologi
Thesis at a second degree level
Olsen, Atle Ivar; Olsen, Yngvar. (2006) CODTECH: a process oriented approach to intensive production of marine juveniles with main emphasis on cod. Årsrapport 2005. Codtech / NTNU
Report
Leiknes, Øystein; Olsen, Yngvar. (2005) Vurdering av fosfor anvendt som biomassemål for dyreplankton. NTNU, Institutt for biologi
Thesis at a second degree level
Olsen, Atle Ivar; Olsen, Yngvar. (2005) CODTECH: a process oriented approach to intensive production of marine juveniles with main emphasis on cod. Årsrapport 2004. Codtech / NTNU
Report
Olsen, Atle Ivar; Olsen, Yngvar. (2004) CODTECH: a process oriented approach to intensive production of marine juveniles with main emphasis on cod. Årsrapport 2003. Codtech / NTNU
Report
Handå, Aleksander; McClimans, Thomas; Reitan, Kjell Inge; Olsen, Yngvar. (2003) Utredning over mulige strategier og tiltak for produksjon av giftfrie blåskjell i norske fjorder (Strategies to combat toxic algae, in Norwegian). SINTEF Ocean
Report
Handå, Aleksander; Fredheim, Arne; Lien, Egil; McClimans, Thomas; Reitan, Kjell Inge; Tangen, Karl. (2003) Bruk av luftbobling og neddykket ferskvannsutslipp som metode for produksjon av giftfrie blåskjell (Artificial upwelling to combat toxic algae - in Norwegian). SINTEF Ocean
Report
Reitan, Kjell Inge; Olsen, Yngvar; Øie, G; Reinertsen, Helge. (2001) Enhanced Nutrient Supply to Norwegian Coastal Waters: Effects on Growth of Scallops and Blue Mussels. C.C.-T. et al. (eds.) Spawning and maturation of aquaculture species, US-Japan Natural Resources Technical report (28)
Report
Skjoldal, Hein Rune; Aure, Jan; Bakke, Torgeir; Dahl, Finn Erik; Fredriksen, Stein; Gray, John Stuart. (1997) The Norwegian North Sea Coastal Water: Eutriphication; Status and trends. Statens forurensningstilsyn
Report
Skjoldal, Hein Rune; Bakke, Torgeir; Dahl, Finn Erik; Fredriksen, Stein; Gray, John Stuart; Heldal, Mikal. (1995) Ytre Oslofjord: Eutrofitilstand, utvikling og forventede effekter av reduserte tilførsler av næringsalter. Statens forurensningstilsyn
Report

Teaching

Courses

Media

2022

Interview

Olsen, Yngvar. (2022) Møttes tilfeldig med idéer - nå er konferansen 10 år . MN24 MN24 [Newspaper] 2022-10-28

2021

Lecture

Forbord, Silje; Matsson, Böris Sanna Christina A; Broch, Ole Jacob; Steinhovden, Kristine; Duinker, Arne; Solvang, Torfinn. (2021) Cultivation of sugar kelp (Saccharina latissima) along the Norwegian coast. Variations in growth and chemical composition in connection to latitude, season, depth and hatchery treatments. Norges Vel ALGET2 Webinar , Online 2021-01-28 - 2021-01-28

2020

Academic lecture

Haugen, Randi Wenche; Carson, Siri Granum; Olsen, Yngvar. (2020) Hvordan bygge samfunnsansvar innen lakseoppdrett? . NTNU Vitenskapsmuseet NTNU Kveld , Dokkhuset Trondheim 2020-02-18 - 2020-02-18
Popular scientific lecture

Olsen, Yngvar. (2020) Havbruksingeniør - nytt 3-årig bachelorstudium. NCE Aquatech cluster, Sjømat Norge Havbruk Midt Årssamling Sjømat Norge Havbruk Midt & NCE Aquatech Cluster , Trondheim 2020-02-17 - 2020-02-18

2019

Lecture

Forbord, Silje; Brodahl, Guri Ellila; Matsson, Sanna; Skjermo, Jorunn; Broch, Ole Jacob; Steinhovden, Kristine. (2019) Latitudinal and seasonal variations of growth and chemical content of the sugar kelp Saccharina latissima along the Norwegian coast. International Seaweed Association 23rd International Seaweed Symposium , Jeju 2019-04-28 - 2019-05-03
Academic lecture

Skrove, Tale; Olsen, Yngvar. (2019) Effects of nutrient emissions from an exposed fish farm on the upper water column . European Aquaculture Society Aquaculture Europe 2019 , Berlin 2019-10-08 - 2019-10-10
Lecture

Forbord, Silje; Matsson, Sanna; Broch, Ole Jacob; Handå, Aleksander; Skjermo, Jorunn; Steinhovden, Kristine. (2019) Seaweed cultivation in Norway- ecology and strategy. SINTEF Ocean SIG Seaweed 5 , Trondheim 2019-11-27 - 2019-11-28
Academic lecture

Bakke, Ingrid; Mathisen, Amalie johanne Horn; Gomez de la Torre Canny, Sol; Olsen, Yngvar; Vadstein, Olav. (2019) Effects of host genetics and water microbiota on the colonization of gut in yolk sac salmon fry . 2nd International Fish Microbiota workshop , Eugene, Oregon 2019-09-03 - 2019-09-05
Academic lecture

Etter, Siv Anina; Forbord, Silje; Dahlen, Vegard Rønning; Handå, Aleksander; Olsen, Yngvar; Reitan, Kjell Inge. (2019) INTITIAL UPTAKE CAPACITY OF AMONIUM IN SACCHARINA LATISSIMA IN AN IMTA CONTEXT. European Aquaculture Society Aquaculture Europe 2019 , Berlin 2019-10-08 - 2019-10-11
Academic lecture

Saifullah, Saifullah; Forbord, Silje; Handå, Aleksander; Olsen, Yngvar. (2019) Can shifting the depth improve the growth and carbohydrate content of the sugar kelp? A result from MACROSEA project. International Seaweed Association 23rd International Seaweed Symposium , International Convention Center, Jeju 2019-04-28 - 2019-05-03

2018

Academic lecture

Forbord, Silje; Brodahl, Guri; Matsson, Sanna; Skjermo, Jorunn; Broch, Ole Jacob; Alver, Morten. (2018) A NORWEGIAN CULTIVATION PROGRAM FOR THE SUGAR KELP Saccharina latissima. World Aquaculture Society and European Aquaculture Society Aqua 2018 #We R Aquaculture , Montpellier 2018-08-25 - 2018-08-29
Academic lecture

Hancke, Kasper; Broch, Ole Jacob; Bekkby, Trine; Olsen, Yngvar; Fieler, Reinhold; Gundersen, Hege. (2018) Kelp industrial production: Potential impacts on coastal ecosystems. World Aquaculture Society World Aquaculture Society Conference - AQUA2018 , Montpellier 2018-08-25 - 2018-08-29
Academic lecture

Hancke, Kasper; Broch, Ole Jacob; Bekkby, Trine; Olsen, Yngvar; Fieler, Reinhold; Christie, Hartvig C. (2018) Industriell taredyrking: Potensielle effekter på naturlige økosystemer. Research Council of Norway HAVBRUK2018 Conference , Oslo 2018-04-18 - 2018-04-20
Academic lecture

Båtnes, Anna Solvang; Jevne, Lone Sunniva; Reitan, Kjell Inge; Olsen, Yngvar. (2018) Taskforce lakselus: mekanismer for spredning av lakselus. FHFs lusekonferanse , Trondheim 2018-01-22 - 2018-01-24
Poster

Båtnes, Anna Solvang; Bones, Atle M.; Guragain, Prashanna; Guttu, Ane Maria; Jevne, Lone Sunniva; Nytrø, Ane Vigdisdatter. (2018) Taskforce salmon lice – spread and infection mechanisms of sea lice within and between farmed and wild populations of salmonids. Sea Lice 2018 , Punta Arenas 2018-11-04 - 2018-11-08
Academic lecture

Saifullah, Saifullah; Surilayani, Dini; Handå, Aleksander; Olsen, Yngvar. (2018) Carbohydrate of the Brown Seaweed, Saccharina latissima: a review. Universitas Sultan Ageng Tirtayasa 2nd International Conference on Food Security Innovation 2018 , Aston Hotel, Anyer, Serang-Banten 2018-10-23 - 2018-10-23
Poster

Forbord, Silje; Brodahl, Guri; Matsson, Sanna; Broch, Ole Jacob; Skjermo, Jorunn; Alver, Morten. (2018) A Norwegian cultivation program for sugar kelp (Saccharina latissima). Seafarm, AquaAgri Kelp and Sweaweed Tjärnö International Seaweed Conference , Tjärnö Marine Laboratory 2018-06-18 - 2018-06-20
Poster

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.. (2018) Rearing water treatment influences the microbiota and transcript profiles of cod larvae. . NMBU Nordic RAS workshop , Oslo, NMBU 2018-11-19 - 2018-11-20
Academic lecture

Jalili, Mahsa; Jin, Yang; Olsen, Yngvar; Bones, Atle M.; Østensen, Mari-Ann; Vadstein, Olav. (2018) Dietary lipids can modify the immune-related transcriptome in Atlantic salmon: a model organism. EFIS 5th European Congress of Immunology , Amsterdam 2018-09-02 - 2018-09-06
Poster

Forbord, Silje; Brodahl, Guri; Matsson, Sanna; Broch, Ole Jacob; Skjermo, Jorunn; Alver, Morten. (2018) Nasjonalt dyrkningsprogram for sukkertare. Forskningsrådet Havbruk 2018 , Oslo 2018-04-18 - 2018-04-20
Lecture

Handå, Aleksander; Broch, Ole Jacob; Forbord, Silje; Skjermo, Jorunn; Alver, Morten; Solvang, Torfinn. (2018) Taredyrking – en næring i vekst. Norges forskningsråd Havbrukskonferasen , Oslo 2018-04-15 - 2018-04-15

2017

Poster

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.. (2017) Rearing water treatment influences the microbiota and trancript profiles of cod larvae. Ghent University and NTNU Larvi 2017 , Gent 2017-09-04 - 2017-09-07
Interview

Kjørsvik, Elin; Olsen, Yngvar; Bazilchuk, Nancy Reney; Midling, Anne Sliper. (2017) Japanere skal redde den truede tunfisken. forskning.no forskning.no [Internet] 2017-01-19
Interview

Kjørsvik, Elin; Olsen, Yngvar; Bazilchuk, Nancy Reney; Midling, Anne Sliper. (2017) Oppdrett kan redde utrydningstruet tunfisk. Gemini.no Gemini.no [Internet] 2017-01-19
Academic lecture

Jalili, Mahsa; Jin, Yang; Olsen, Yngvar; Bones, Atle M.. (2017) Dietary fat can modify the mRNA levels of inflammation markers in Salmo salar. 7th International Conference on Aquaculture & Fisheries , Rome 2017-10-19 - 2017-10-21
Academic lecture

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.. (2017) Rearing water microbiota influences the microbiota and transcript profiles of cod larvae . NTNU, University of Oregon, Duke University 1st International Fish-Microbiota Workshop , Trondheim 2017-06-19 - 2017-06-21
Academic lecture

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.. (2017) Rearing water microbiota influences the microbiota and transcript profiles of cod larvae . Norsk Biokjemisk Selskap NBS Contact Meeting 2017 , Gol 2017-01-19 - 2017-01-22
Interview

Jevne, Lone Sunniva; Båtnes, Anna Solvang; Reitan, Kjell Inge; Olsen, Yngvar; Guttu, Ane Maria. (2017) På lag mot lakselusa. Frøya Nyheter Frøya Nyheter [Internet] 2017-04-06

2016

Poster

Jin, Yang; Olsen, Rolf Erik; Østensen, Mari-Ann; Gillard, Gareth Benjamin; Korsvoll, Sven Arild; Santi, Nina. (2016) MOLECULAR MECHANISMS UNDERLYING PHOSPHOLIPID METABOLISM IN STOMACH, PYLORIC CAECA AND HINDGUT OF ATLANTIC SALMON (SALMO SALAR) FRY DURING EARLY DEVELOPMENT FROM FIRST-FEEDING. the International Cooperation to Sequence the Atlantic Salmo 3rd INTERNATIONAL CONFERENCE ON INTEGRATIVE SALMONID BIOLOGY (ICISB 2016) , PUERTO VARAS 2016-04-24 - 2016-04-27
Academic lecture

Forberg, Torunn; Vestrum, Ragnhild Inderberg; Luef, Birgit; Winge, Per; Østensen, Mari-Ann; Olsen, Yngvar. (2016) Host-microbe interactions in cod larvae . NBS NBS seminar 2016 , Åre 2016-04-06 - 2016-04-07
Poster

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.. (2016) Rearing water treatment influences the microbiota and transcript profiles of cod larvae. International Symposium on Microbial Ecology ISME 16 2016-08-21 - 2016-08-26
Academic lecture

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.. (2016) Rearing water microbiota influences the microbiota and transcript profiles of cod larvae. Norsk Biokjemisk Selskap NBS seminar 2016 , Åre 2016-04-06 - 2016-04-07

2015

Academic lecture

Vadstein, Olav; Attramadal, Kari; Bakke, Ingrid; Olsen, Yngvar. (2015) Beneficial Fish-Microbe Interactions: The Fourth Dimension of RAS. 3rd NordicRAS Workshop on Recirculating Aquaculture Systems , Molde 2015-09-30 - 2015-10-01
Academic lecture

Handå, Aleksander; Jansen, HM; Bergvik, Maria; Forbord, Silje; Broch, Ole Jacob; Ellis, John. (2015) EXPLOITATION OF NUTRIENTS FROM SALMON AQUACULTURE: WHAT IS THE POTENTIAL FOR IMTA IN NORWAY?. European Aquaculture Society Aquaculture Europe 2015 , Rotterdam 2015-10-21 - 2015-10-23
Interview

Olsen, Yngvar. (2015) - Frøya skal bli kaia til NTNU. Frøya.no Frøya.no [Internet] 2015-10-14
Interview

Olsen, Yngvar. (2015) Vi vil inspirere flere. Fiskeribladet Fiskaren Fiskeribladet Fiskaren [Newspaper] 2015-05-04
Academic lecture

Forberg, Torunn; Vadstein, Olav; Winge, Per; Bones, Atle M.; Luef, Birgit; Østensen, Mari-Ann. (2015) Development of a gnotobiotic system for Atlantic cod (Gadus morhua) larvae to study host-microbe interactions. Keystone symposia Gut Microbiota Modulation of Host Physiology: The Search for mechanism , Keystone, Colorado 2015-03-01 - 2015-03-06

2014

Lecture

Forbord, Silje; Fossberg, Julia; Førde, Henny; Bergvik, Maria; Fleddum, Annelise; Skjermo, Jorunn. (2014) Integrert multi-trofisk akvakultur - Sesongvariasjoner i vekst og begroing hos dyrket sukkertare i nærhet av lakseanlegg. Forskningsrådet Programkonferansen HAVBRUK 2014 , Tromsø 2014-03-31 - 2014-04-02
Lecture

Forbord, Silje; Handå, Aleksander; Wang, Xinxin; Broch, Ole Jacob; Fossberg, Julia; Førde, Henny. (2014) Taredyrking i IMTA. Norsk Sjømat Senter SATS Marint! , Bergen 2014-02-12 - 2014-02-13
Lecture

Olsen, Yngvar. (2014) Et teknologisprang for lakseoppdrett – et bidrag til global matforsyning - Innledningsforedrag. NTNU-STFK Brohode Frøya Brohodekonferansen 2014 , Frøya kultur- og kompetansesenter, Sistranda 2014-10-22 - 2014-10-23
Academic lecture

Olsen, Yngvar. (2014) Resources for fish feed in future mariculture. World Fishing & Aquaculture 5th Offshore Mariculture Conference , Naples, Italy 2014-04-09 - 2014-04-11
Popular scientific lecture

Olsen, Yngvar. (2014) Utslipp og forvaltning av næringssalter. Kjøllefjord kommune Presentasjon for formannskapet i Kjøllefjord kommune , Kjøllefjord, Finnmark 2014-10-27 - 2014-10-27
Lecture

Olsen, Yngvar. (2014) Salmon farming in Norway - state of the art technology and future perspectives. Research Council of Norway and the Norwegian Embassy Research Seminar on Aquaculture Research , Qingdao 2014-11-04 - 2014-11-04
Lecture

Olsen, Yngvar. (2014) An overview of the aquaculture activity in Norway. Innovation Norway, Norwegian Seafood Council, Nor. Embassy Norwegian Marine Seminar, Aquaculture , Qingdao 2014-11-04 - 2014-11-04
Lecture

Olsen, Yngvar. (2014) Havet; vårt sikre matfat? Hvordan vil klimaendringene påvirke havet og ressursene i havet?. Miljødirektoreatet Dybdeseminar - På innsiden av FNs klimapanels rapporter , Ingeniørenes hus, Oslo 2014-05-21 - 2015-05-21
Popular scientific lecture

Olsen, Yngvar. (2014) Tverrfaglighet i forskning og utdanning. Visjon om ”Kunnskap for bærekraftig bruk av havrommet”. NTNU-STFK Brohode Frøya Rørvik 2014 - Veldigviktigkonferansen – vårslepp , Hurtigruta Polarlys 2014-02-04 - 2014-02-06
Poster

Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Sanchez, Nicolas; Gonzalez, Humberto E.. (2014) Effect of ammonium addition on the microbial food web structure and community composition of the osmotrophs in the Comau fjord in southern Chile. American Society for Limnology and Oceanography ASLO Ocean Sciences Meeting , Honolulu 2014-02-23 - 2014-02-28
Poster

Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bakke, Ingrid. (2014) GENE REGULATION OF ATLANTIC COD (GADUS MORHUA) LARVAE WITH FOCUS ON LIPID DIGESTION AND PHOSPHOLIPID METABOLISM. Aquaculture Europe 2014 2014-10-14 - 2014-10-17
Lecture

Li, Keshuai; Olsen, Yngvar. (2014) Efficiency of DHA enrichment in phospholipids of rotifers and stability post-enrichment. Aquaculture Europe 2014 , Donostia-San Sebastian 2014-10-14 - 2014-10-17
Poster

Jin, Yang; Li, Keshuai; Olsen, Yngvar. (2014) TIME KINETICS OF FATTY ACID CHANGES IN PHOSPHOLIPIDS FOLLOWING ENRICHMENT AND STARVATION OF ARTEMIA FRANCISCANA WITH A MAIN FOCUS ON DOCOSAHEXAENOIC ACID (DHA). Aquaculture Europe 2014 2014-10-14 - 2014-10-17
Academic lecture

Bergvik, Maria; Stensås, Lene; Forbord, Silje; Jansen, Henrice M; Reitan, Kjell Inge; Strand, Øivind. (2014) Assimilation of nutrients from salmon aquaculture in great scallop (Pecten maximus) and blue mussels (Mytilus edulis). European Aquaculture Society Aquaculture Europe 14, International Conference and Exposition , San Sebastion 2014-10-14 - 2014-10-17

2013

Lecture

Forbord, Silje; Handå, Aleksander; Wang, Xinxin; Broch, Ole Jacob; Dahle, Stine Veronica Wiborg; Størseth, Trond Røvik. (2013) Seasonal and depth-dependent growth of cultivated kelp (Saccharina latissima) in close proximity to salmon (Salmo salar) aquaculture in Norway. International Seaweed Association XXI International Seaweed Symposium , Bali 2013-04-21 - 2013-04-26
Lecture

Forbord, Silje; Handå, Aleksander; Wang, Xinxin; Broch, Ole Jacob; Dahle, Stine Veronica Wiborg; Størseth, Trond Røvik. (2013) Seasonal and depth-dependent growth of cultivated kelp (Saccharina latissima) in close proximity to salmon (Salmo salar) aquaculture in Norway. European Aquaculture Society Aquaculture Europe 13 , Trondheim 2013-08-09 - 2013-08-13
Interview

Nancy, Bazilchuk; Olsen, Yngvar. (2013) Factoring marine sediments into climate calculations. ScienceNordic ScienceNordic [Internet] 2013-12-13
Interview

Langeland, Pernille Feilberg; Olsen, Yngvar. (2013) Havbunnen endrer klimaregnestykket. Gemini Gemini [Journal] 2013-12-27
Academic lecture

Vadstein, Olav; Olsen, Yngvar; Attramadal, Kari; Bakke, Ingrid; Forberg, Torunn; Skjermo, Jorunn. (2013) The microbial world of cultured larvae: a concept model. “Aquaculture conference: To the Next 40 Years of Sustainable Global Aquaculture”. , Las Palmas, Gran Canaria 2013-11-03 - 2013-11-07
Academic lecture

Bloecher, Nina; Guenther, Jana; Bannister, Raymond; Olsen, Yngvar; Piola, Richard. (2013) Biofouling hydroids in Norwegian salmon aquaculture: do they benefit from farm nutrients and can they significantly affect the oxygen levels in a cage?. European Aquaculture Society Aquaculture Europe , Trondheim 2013-09-19 - 2013-09-21
Academic lecture

Bakke, Ingrid; Skjermo, Jorunn; Attramadal, Kari; Coward, Eivind; Kjørsvik, Elin; Vo, Tu Anh. (2013) Bacterial community assembly in developing cod larvae (Gadus morhua). Conference Larvi 2013 , Gent 2013-09-02 - 2013-09-05
Academic lecture

Attramadal, Kari; Øie, Gunvor; Kjørsvik, Elin; Minniti, Giusi; Olsen, Yngvar; Skjermo, Jorunn. (2013) Control of the selective pressure on microbes in rearing tanks through manipulation of the incoming water increases survival of marine fish larvae. Conference Larvi 2013 , Gent 2013-09-02 - 2013-09-05
Poster

Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bakke, Ingrid. (2013) GENE REGULATION OF ATLANTIC COD (GADUS MORHUA) LARVAE WITH FOCUS ON LIPID DIGESTION AND PHOSPHOLIPID METABOLISM. Ghent University LARVI 2013 6th fish & shellfish larviculture symposium , Ghent 2013-09-02 - 2013-09-05
Interview

Olsen, Yngvar. (2013) Norges muligheter i havbruk. TV2 interjuv i Akademies hus, Oslo TV2 interjuv i Akademies hus, Oslo [TV] 2013-01-30
Interview

Vadstein, Olav; Olsen, Yngvar. (2013) Et godt kinderegg. Fiskeribladetfiskaren Fiskeribladetfiskaren [Newspaper] 2013-08-14
Popular scientific lecture

Olsen, Yngvar. (2013) Økologiske prinsipper og muligheter for matproduksjon til havs. DNVA, NTVA og NFR Mat fra havet – Norges muligheter , Akademiets hus, Oslo 2013-01-30 - 2013-11-30

2012

Lecture

Handå, Aleksander; Forbord, Silje; Broch, Ole Jacob; Reitan, Kjell Inge; Skjermo, Jorunn; Olsen, Yngvar. (2012) IMTA in Norway with Atlantic salmon, Sugar kelp and Blue mussels: A one-year case study. . YSFRI and CASF NTNU, Yellow Sea Fisheries Research Institute and CASF Aquaculture seminar , Qingdao 2012-09-15 - 2012-09-15
Poster

Li, Keshuai; Kjørsvik, Elin; Bergvik, Maria; Olsen, Yngvar. (2012) Manipulation of the docosahexaenoic acid (DHA) content of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) in rotifers Brachionus sp. Nevada and Cayman. XV International Symposium on Fish Nutrition and Feeding , Molde 2012-06-04 - 2012-06-07
Interview

Olsen, Yngvar; Skjermo, Jorunn; Aasen, Inga-Marie; Østgaard, Kjetill. (2012) Fra tanke til tank. Adresseavisen - Bil & trafikk Adresseavisen - Bil & trafikk [Newspaper] 2012-03-20
Academic lecture

Attramadal, Kari; Truong, Thi My Hanh; Bakke, Ingrid; Vadstein, Olav; Skjermo, Jorunn; Olsen, Yngvar. (2012) RAS AND MICROBIAL MATURATION AS TOOLS OF K-SELECTION OF MICROBIAL COMMUNITIES IMPROVE SURVIVAL IN COD LARVAE. Aqua 2012 , Praha 2012-09-04 - 2012-09-04

2011

Academic lecture

Vadstein, Olav; Skjermo, Jorunn; Attramadal, Kari; Bakke, Ingrid; Olsen, Yngvar. (2011) Microbial Resource Management for improved viability of marine fish larvae by community level selection of microbiota. 1st International Symposium on Microbial Resource Management in Biotechnology (MRM 2011) Concepts and Applications , University of Ghent, Ghent 2011-06-30 - 2011-07-01

2010

Academic lecture

Bossier, P.; Vadstein, Olav; Olsen, Yngvar; Boon, N.; Bergh, Ø.; Gatesoupe, F.J.. (2010) Microbiology and immunology of larviculture. Aquaculture Europe 2010 , Porto 2010-10-05 - 2010-10-08
Academic lecture

Attramadal, Kari; Salvesen, Ingrid; Øie, Gunvor; Xue, Renyu; Størseth, Trond; Vadstein, Olav. (2010) Recirculation as a microbial control strategy in intensive aquaculture of marine larvae. Aquaculture 2010, World Aquaculture Society , San Diego, California 2010-03-01 - 2010-03-05
Academic lecture

Attramadal, Kari; Vu, T.T.M.; Buran, Astrid; Wold, Per-Arvid; Øie, Gunvor; Leiknes, TorOve. (2010) Recirculation as a microbial control strategy in intensive aquaculture of marine larvae. Aquaculture Europe 2010 , Porto 2010-10-05 -
Academic lecture

Attramadal, Kari; Thuy, Minh Vu Thi; Buran, Astrid; Wold, Per-Arvid; Øie, Gunvor; Vadstein, Olav. (2010) Recirculation as a microbial control strategy in intensive aquaculture of marine larvae. Aquacultural Engineering Special Issues Forum , Roanoke, Virgina 2010-08-18 - 2010-08-19
Academic lecture

Alver, Morten; Broch, Ole Jacob; Ellingsen, Ingrid H. Ellingsen; Handå, Aleksander; Olsen, Yngvar; Slagstad, Dag. (2010) Modelling IMTA: bioremediation potential and trophic pathways of excess nutrient loads. European Aquaculture Society Aquaculture Europe 2010 , Porto 2010-10-05 - 2010-10-08
Academic lecture

Øie, Gunvor; Alver, Morten; Storøy, Werner; Bardal, Tora; Overrein, Ingrid; Alfredsen, Jo Arve. (2010) Automation in Marine Larviculture With Use of Copepods (Acartia tonsa) as Live Food. European Aquaculture Society Aquaculture Europe 2010 , Porto 2010-10-05 - 2010-10-08

2009

Academic lecture

Bossier, P.; Dierckens, K.; Van Delsen, B.; Defoirdt, T.; De Schryver, P.; Vadstein, Olav. (2009) The role of microbiota in aquaculture target organisms and their environment. Aquaculture Europe 2009 , Trondheim 2009-08-14 - 2009-08-17
Academic lecture

Alver, Morten; Øie, Gunvor; Olsen, Yngvar; Alfredsen, Jo Arve. (2009) Process monitoring and control in the next generation hatchery. Ghent University Larvi 2009 5th fish & shellfish larviculture symposium , Gent 2009-09-07 - 2009-09-10
Academic lecture

Olsen, Yngvar. (2009) Waste production and environmental impacts of salmon aquaculture. AVS Third International Workshop on Carrying Capacity of Aquaculture: Integrated Multitrophic Aquaculture as a strategy for management of high productive aquaculture areas , Puerto Montt 2009-06-20 - 2009-09-21
Academic lecture

Øie, Gunvor; Alver, Morten; Alfredsen, Jo Arve; Kjørsvik, Elin; Attramadal, Kari; Olsen, Yngvar. (2009) Status and challenges in cod larval production. Ghent University Larvi 2009 – 5th fish & shellfish larviculture symposium , Ghent 2009-09-07 - 2009-09-10
Academic lecture

Olsen, Yngvar; Larssen, Harald; Overrein, Ingrid; Evjemo, Jan Ove; Rainuzzo, Jose R.. (2009) Fatty acid composition of phospholipids in prey organisms and their incorporation efficiency in cod larvae during early first feeding. World Aquaculture Society World Aquaculture 2009 , Veracruz 2009-09-25 - 2009-09-29
Popular scientific lecture

Olsen, Yngvar. (2009) Oppdrett og eutrofi-problematikk. Norsk Vannforening Akvakultur – muligheter og trusler i vann , Pirsenteret, Havnegt. 9, Trondheim 2009-05-13 - 2009-05-13

2008

Academic lecture

Attramadal, Kari; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2008) Comparison of a flow through- and two recirculation systems for intensive rearing of cod larvae (Gadus morhua L.). NOFIMA ”Resirkulering av vann i akvakultur” , Sunndalsøra 2008-02-27 - 2008-02-28
Academic lecture

Olsen, Yngvar; Olsen, Lasse Mork. (2008) Environmental impact of aquaculture on coastal planktonic ecosystems. Japanese Society of Fisheries 5th World Fisheries Congress , Yokohama 2008-10-20 - 2008-10-24
Academic lecture

Attramadal, Kari; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2008) Recirculation technology for marine fish production. COST-EUREKA COST-EUREKA Twin Event Enkhuizen , Enkhuizen 2008-04-20 - 2008-04-22
Academic lecture

Olsen, Yngvar. (2008) Environmental interaction of coastal aquaculture – A European perspective. Ocean University of China International Workshop on Healthy Aquaculture 2008 , Qingdao 2008-05-25 - 2008-05-27
Academic lecture

Olsen, Yngvar. (2008) Waste production and environmental impacts of salmon aquaculture. Yellow Sea Fisheries Research Institute China-Norway Workshop on IMTA and Aquaculture Technology , Qingdao 2008-05-29 - 2008-06-01
Popular scientific lecture

Olsen, Yngvar. (2008) Eutrofiering av kystfarvann – Eksperimentell eutrofiering av Hopavågen. Statens Forurensningstilsyn Seminar om næringssalters betydning for kystmiljøet , SFTs lokaler på Helsfyr i Oslo, Strømsveien 96 2008-10-09 - 2008-10-10

2007

Academic lecture

Tøndel, Bjørnar; Attramadal, Kari; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2007) Effect of live algae, algae paste or clay, on fish performance organic matter and bacteria in cod larvea (Gadus morhua) tanks. European Aquaculture Society Aquaculture Europe 07, Competing Claims , Istanbul 2007-10-25 - 2007-10-28
Academic lecture

Øie, Gunvor; Attramadal, Kari; Vadstein, Olav; Olsen, Yngvar. (2007) Comparison of a flow through- and two recirculation systems for intensive rearing of cod larvae (Gadus morhua L.). European Aquaculture Society Aquaculture Europe 07, Competing Claims , Istanbul 2007-10-25 - 2007-10-27
Academic lecture

Olsen, Yngvar. (2007) Environmental interaction of aquaculture and coastal ecosystems. European Aquaculture Society Aquaculture Europe 2007 , Istanbul 2007-10-24 - 2007-10-27
Academic lecture

Olsen, Yngvar. (2007) Status and Perspectives of Marine Aquaculture – A Foresight. COST-EUREKA Aquaculture Twin Event , Patras 2007-06-10 - 2007-07-12
Academic lecture

Olsen, Yngvar. (2007) Nutrient impacts of farmed Atlantic salmon (Salmo salar) on pelagic ecosystems and implications for carrying capacity. Nutrients Working Group Salmon Aquaculture Dialogue, World Wildlife Fund (WWF). World Aquaculture Society WAS Conference , San Antonio, February 26 - March 2. 2007. 2007-02-26 - 2007-03-02
Academic lecture

Ellingsen, Harald; Endal, Anders; Olsen, Yngvar. (2007) Education for sustainable utilization of marine resources: A new international master programme at the Norwegian University of Science and Technology (NTNU) in Trondheim. Ecological Society of China & Elsevier Ecosummit 2007: Ecological Complexity and Sustainability , Beijing 2007-05-22 - 2007-05-27
Academic lecture

Olsen, Yngvar. (2007) Cage culture and waste management – Impacts on the pelagic ecosystem. COST-EUREKA Aquaculture Twin Event , Patras 2007-06-10 - 2007-06-12

2006

Academic lecture

Olsen, Yngvar; Otterstad, Oddmund; Duarte, Carlos. (2006) Status and future perspectives of marine aquaculture. Sami project Sami workshop , Menorca 2006-01-30 - 2006-02-01
Academic lecture

Olsen, Yngvar. (2006) Nutrient loading from cage fish farming and its impact on pelagic ecosystems. World Aquaculture Society - European Aquaculture Socoety WAS-EAS AQUA 2006 , Florence 2006-05-09 -
Academic lecture

Olsen, Yngvar. (2006) Environmental Interactions between Cage Culture and the Surrounding Water Masses. Asian Fisheries Society 2nd International Symposium on Cage Aquaculture in Asia (CAA2) , Hanghzou 2006-07-03 - 2006-07-08
Academic lecture

Olsen, Yngvar. (2006) Environmental Interactions between Cage Culture and the Surrounding Water Masses. Zhejiang Ocean University Zhoushan International Marine High & New Technology Forum , Zhoushan 2006-06-28 - 2006-07-01
Academic lecture

Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2006) Vigilance and impact of the nutrient loading on the pelagic ecosystem. Salmon Chile VII Jornadas de Salmonicultura , Puerto Varas 2006-10-25 - 2006-10-27
Academic lecture

Olsen, Yngvar; Reitan, Kjell Inge; Slagstad, Dag. (2006) Farming sea cages as driver for the integrated aquaculture. Salmon Chile VII Jornadas de Salmonicultura , Puerto Varas 2006-10-25 - 2006-10-27
Academic lecture

Attramadal, Kari; Salvesen, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2006) Mikrobiell interaksjoner mellom partikler I intensive marin fiskelarveoppdrett: en sammenligning mellom mikroalger, algepasta og leire. Programkonferanse HAVBRUK , Bergen 2006-03-29 - 2006-03-31
Academic lecture

Attramadal, Kari; Salvesen, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2006) Effect of particle addition: Live algae, algae paste or clay, on organic matter and bacteria in cold water marine fish larvae thanks. AQUACULTURE EUROPE 2006/ WORLD AQUACULTURE 2006 , Firenze 2006-05-09 - 2006-05-13
Academic lecture

Reinertsen, Helge; Olsen, Yngvar; Vadstein, Olav. (2006) Harvesting at lower trophic levels in marine systems. "Development of Technology for Modernizing the Fish Sector in a Global Context" , Nha Trang University 2006-11-16 - 2006-11-17
Poster

Høy, Erik; Alfredsen, Jo Arve; Alver, Morten; Øie, Gunvor; Olsen, Yngvar. (2006) Computer controlled appetite feeding of marine larvae. World Aquaculture Society Aqua 2006 , Firenze 2006-05-09 - 2006-05-12
Poster

Langvatn, Vegard Aambø; Olsen, Atle Ivar; Olsen, Yngvar. (2006) Size selection of live feed by larvae of Atlantic Cod Gadus Morhua. Aqua 2006 , Firenze, Italia 2006-05-09 - 2006-05-13

2005

Academic lecture

Alver, Morten; Alfredsen, Jo Arve; Olsen, Yngvar. (2005) An individual based model for estimating nutritional value of rotifers (Brachionus plicatilis) as start feed for fish larvae. European Aquaculture Society Aquaculture Europe 2005 , Trondheim 2005-08-09 - 2005-08-12
Academic lecture

Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2005) Assimilative carrying capacity: Contribution and impact on the pelagic system. Aquaculture Europe 2005 , Trondheim 2005-08-05 - 2005-08-09
Academic lecture

Attramadal, Kari; Salvesen, Ingrid; Vadstein, Olav; Olsen, Yngvar. (2005) Water quality and microbial environment in a flow through and recirculation system for intensive rearing of cod larvae (Gadus morhua L.). Aquaculture Europe 2005 , Trondheim 2005-08-05 - 2005-08-09
Academic lecture

Olsen, Yngvar; Andersen, Tom; Gismervik, Ingrid; Vadstein, Olav. (2005) Are marine planktonic heterotrophs likely to experience N or mineral P limitation in temperate coastal waters?. ASLO Summer meeting 2005 , Santiago de Campostela 2005-05-19 - 2005-06-24
Poster

Attramadal, Kari; Xue, Renyu; Salvesen, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2005) Microbial environment in a flow-through and a recirculating system for intensive rearing of cod larvae (Gadus morhua L.). LARVI’05 – Fish & Shellfish Larviculture Symposium , Gent 2005-08-05 - 2005-08-08

2004

Academic lecture

Olsen, Yngvar. (2004) Is marine zooplankton likely to experience essential fatty acid (EFA) deficiency?. IMEDEA-CSIC , Mallorca 2004-06-03 - 2004-06-03
Academic lecture

Olsen, Yngvar. (2004) Is essential fatty acid deficiency likely to occur in natural aquatic food webs, and if so, what are the potential consequences for fish stocks?. Lake Whitefish Natural Mortality Workshop , Ann Arbor 2004-09-21 - 2004-09-22
Academic lecture

Olsen, Yngvar. (2004)

Språkvelger

Yngvar Olsen

Yngvar Olsen

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