Olav Vadstein

About

I’m Professor emeritus in Microbial Ecology, and have a general interest in aquatic ecosystems - both natural and un-natural (human created).

Areas of speciality/Fields of responsibility

Professor emeritus in microbial ecology

I’m a Professor emeritus in Microbial Ecology with general interest in aquatic ecosystems - both natural and un-natural (human created). Besides basic aspects, I’m interested in applied microbial ecology which can be placed under the heading Environmental Biotechnology.

Environmental Biotechnology is the application of biotechnology for solving environmental problems, both in the environment per se (e.g. bioremediation) or in man made ecosystems (e.g. sewage treatment plants). Environmental biotechnology search for technologies that are in accordance with ecological principals, based on a “join them” instead of a “beat them” strategy. Microbial Ecology, defined as scientific studies of interactions and basic principals that determine the distribution and abundance of microorganisms, is therefore a basic platform for analyses of problems and for development of technologies.

Ongoing activities are related to the following topics:

- Structure and functioning of natural planktonic ecosystems

- Host/microbe and Microbe/microbe interactions in fish

- Microbial management of marine fish larvae

- Chemical and microbial water quality in aquaculture

Publications

2026

Fernando, Fernando; Bakke, Ingrid; Vadstein, Olav. (2026) The Roles of Biofilters in Shaping Microbial Ecology and Water Quality in Recirculating Aquaculture Systems for Atlantic Salmon (Salmo salar). Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Khadka, Sujan; Fernando, Fernando; Fredriksen, Simen; Aasen, Anna; Dembe, Nicholas; Vadstein, Olav; Bakke, Ingrid. (2026) Biofilm communities in biofilters are structuring the rearing water microbiota in recirculating aquaculture systems (RAS) through dispersal of bacteria. Aquaculture
Academic article
Fernando, Fernando; Khadka, Sujan; Hofstad, Kristine; Fredriksen, Simen; Vadstein, Olav; Bakke, Ingrid. (2026) Mature nitrifying biofilters counteract invasion by rapid-growing heterotrophic bacteria in recirculating aquaculture systems (RAS). Aquaculture
Academic article

2025

Bandara, Kasun Anuruddha; Benini, Elisa; Sørensen, Sune Riis; Tomkiewicz, Jonna; Vadstein, Olav; Politis, Sebastian N.. (2025) β-glucan enhances ontogeny and modulates the bacteriome and immuno-stress response of European eel larvae. Aquaculture
Academic article
Khadka, Sujan; Vadstein, Olav; Bakke, Ingrid; Olsen, Yngvar; Attramadal, Kari Johanne Kihle. (2025) Bacteria in land-based larval rearing systems: sources of bacteria and their quantitative and qualitative influence on the microbiota of rearing water and larvae. Aquaculture
Academic article
Mathisen, Amalie Johanne Horn; Canny, Sol Gomez de la Torre; Gundersen, Madeleine S.; Østensen, Mari-Ann; Olsen, Yngvar; Vadstein, Olav; Bakke, Ingrid. (2025) Community assembly of gut microbiomes in yolk sac fry of Atlantic salmon: host genetics, environmental microbiomes, and ecological processes. FEMS Microbiology Ecology
Academic article

2024

Bandara, Kasun Anuruddha; Politis, Sebastian Nikitas; Sørensen, Sune Riis; Benini, Elisa; Tomkiewicz, Jonna; Vadstein, Olav. (2024) Effect of Food Amounts on Larval Performance, Bacteriome and Molecular Immunologic Development during First-Feeding Culture of European Eel. Microorganisms
Academic article
Bandara, Kasun Anuruddha; Politis, Sebastian N.; Sganga, Daniela Eliana; Sørensen, Sune Riis; Koumpiadis, Paraskevas; Tomkiewicz, Jonna; Vadstein, Olav. (2024) Effects of European eel egg and larval stocking density on rearing water, offspring bacteriome and derived immune response. Aquaculture
Academic article
Navarro-Guillén, Carmen; Lorentsen, Eirik Degré; Perera, Erick; Yúfera, Manuel; Bakke, Ingrid; Vadstein, Olav. (2024) The role of feeding as synchronizer of gut microbiota dynamics and its potential contribution to protein digestion in greater amberjack (Seriola dumerili). Frontiers in Marine Science
Academic article
Volpe, Charlotte; Nymark, Marianne; Andersen, Tom; Winge, Per; Lavaud, Johann; Vadstein, Olav. (2024) Skeletonema marinoi ecotypes show specific habitat-related responses to fluctuating light supporting high potential for growth under photobioreactor light regime. New Phytologist
Academic article
Vadstein, Olav. (2024) Bruk av antibiotika i Norge må dramatisk ned, men lite skjer. Klassekampen
Commentary
Vadstein, Olav. (2024) Gonoré og antibiotika. Klassekampen
Commentary
Gundersen, Madeleine S.; Vadstein, Olav. (2024) An exploration of the impact of phylogenetic tree structure on NTI and βNTI estimates of community assembly. Scientific Reports
Academic article

2023

Gomez de la Torre Canny, Sol; Nordgård, Catherine Taylor; Mathisen, Amalie Johanne Horn; Lorentsen, Eirik Degré; Vadstein, Olav; Bakke, Ingrid. (2023) A novel gnotobiotic experimental system for Atlantic salmon ( Salmo salar L.) reveals a microbial influence on mucosal barrier function and adipose tissue accumulation during the yolk sac stage. Frontiers in Cellular and Infection Microbiology
Academic article
Gundersen, Madeleine S.; Fiedler, Alexander Willi; Bakke, Ingrid; Vadstein, Olav. (2023) The impact of phage treatment on bacterial community structure is minor compared to antibiotics. Scientific Reports
Academic article
Bandara, Kasun Anuruddha; Benini, Elisa; Politis, Sebastian N.; Conceição, Luis E.C.; Santos, André; Sørensen, Sune Riis; Tomkiewicz, Jonna; Vadstein, Olav. (2023) Exploring bacterial community composition and immune gene expression of European eel larvae (Anguilla anguilla) in relation to first-feeding diets. PLOS ONE
Academic article
Vadstein, Olav. (2023) Antibiotika og myter. Aftenposten (morgenutg. : trykt utg.)
Commentary
Vadstein, Olav. (2023) Antibiotikabruk i Norge: Bør vi primært skryte?. Aftenposten (morgenutg. : trykt utg.)
Commentary
Fiedler, Alexander Willi; Gundersen, Madeleine S.; Vo, Toan Phuc; Almaas, Eivind; Vadstein, Olav; Bakke, Ingrid. (2023) Phage therapy minimally affects the water microbiota in an Atlantic salmon (Salmo salar) rearing system while still preventing infection. Scientific Reports
Academic article
Navarro-Guillén, Carmen; Lorentsen, Eirik Degré; Perera, Erick; Yúfera, Manuel; Vadstein, Olav. (2023) Feeding and water temperature modulate the potential activity of gut microbiota in greater amberjack juveniles (Seriola dumerili). Frontiers in Marine Science
Academic article
Fiedler, Alexander Willi; Drågen, Martha Kristine Rindarøy; Lorentsen, Eirik Degré; Vadstein, Olav; Bakke, Ingrid. (2023) The stability and composition of the gut and skin microbiota of Atlantic salmon throughout the yolk sac stage. Frontiers in Microbiology
Academic article
Vadstein, Olav. (2023) Dør vi uten oljen?. Klassekampen
Commentary
Vadstein, Olav. (2023) Ja, virkeligheten er plagsom. Klassekampen
Commentary

2022

DeSchryver, Peter; Vadstein, Olav; Defoirdt, Tom; Sorgeloos, Patrick. (2022) Microbial management: a key concept for sustainable shrimp culture.
Academic chapter
Vestrum, Ragnhild Inderberg; Forberg, Torunn; Luef, Birgit; Bakke, Ingrid; Winge, Per; Olsen, Yngvar; Vadstein, Olav. (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
Mathivannan, Causia; Brembu, Tore; Vadstein, Olav. (2022) Functional studies of Group II silicanins in the diatom Thalassiosira pseudonana cell wall biomineralization. Norges teknisk-naturvitenskapelige universitet
Master thesis
Jafari, Leila; Gregersen, Kim Joao de Jesus; Vadstein, Olav; Pedersen, Lars-Flemming. (2022) Removal of microparticles and bacterial inactivation in freshwater RAS by use of foam fractionation, H2O2 and NaCl. Aquaculture Research
Academic article
Brembu, Tore; Vadstein, Olav; Sværen, Thea. (2022) Creation of Gene Knockouts for Silicic Acid Transporter-Associated Kinases and Study of Alternative Selection Markers in the Diatom Thalassiosira pseudonana. NTNU, Institutt for bioteknologi og matvitenskap
Master thesis
Obrestad, Kathrine; Einum, Sigurd; Vadstein, Olav. (2022) Stochastic variation in gut bacterial community affects reproductive rates in the water flea Daphnia magna. FEMS Microbiology Ecology
Academic article
Bugten, Anette Voll; Attramadal, Kari; Fossmark, Ragnhild Olsen; Rosten, Trond Waldemar; Vadstein, Olav; Bakke, Ingrid. (2022) Changes in rearing water microbiomes in RAS induced by membrane filtration alters the hindgut microbiomes of Atlantic salmon (Salmo salar) parr. Aquaculture
Academic article
Gundersen, Madeleine S.; Vadstein, Olav; Schryver, Peter De; Attramadal, Kari. (2022) Aquaculture rearing systems induce no legacy effects in Atlantic cod larvae or their rearing water bacterial communities. Scientific Reports
Academic article
Navada, Sharada; Vadstein, Olav. (2022) Salinity Acclimation Strategies in Nitrifying Bioreactors. Frontiers in Marine Science
Academic article
Rong, Ragnhild Lind; Gagnat, Maren Ranheim; Attramadal, Yngve; Vadstein, Olav. (2022) Microbial water quality of the copepod Acartia tonsa in cultures for use as live feed. Aquaculture
Academic article
Thingstad, Tron Frede; Øvreås, Lise; Vadstein, Olav. (2022) Mechanisms Generating Dichotomies in the Life Strategies of Heterotrophic Marine Prokaryotes. Diversity
Academic literature review

2021

Dahle, Stine Veronica Wiborg; Attramadal, Kari; Vadstein, Olav; Hestdahl, Hans Ivar; Bakke, Ingrid. (2021) Microbial community dynamics in a commercial RAS for production of Atlantic salmon fry (Salmo salar). Aquaculture
Academic article
Mathew, K Avarachen; Ardelan, Murat Van; Villa Gonzalez, Susana; Vadstein, Olav; Sajith Vezhapparambu, Veena; Leiknes, Øystein; Mankettikkara, Rahman; Olsen, Yngvar. (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
Gundersen, Madeleine S.; Vadstein, Olav; Bakke, Ingrid; Andersen, Tom; Morelan, Ian. (2021) The effect of periodic disturbances and carrying capacity on the significance of selection and drift in complex bacterial communities. ISME Communications
Academic article
Navada, Sharada; Gaumet, Frederic; Tveten, Ann-Kristin; Kolarevic, Jelena; Vadstein, Olav. (2021) Seeding as a start-up strategy for improving the acclimation of freshwater nitrifying bioreactors to salinity stress. Aquaculture
Academic article
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
Attramadal, Kari J.K.; Øien, John Vegard; Kristensen, Elisabeth; Evjemo, Jan Ove; Kjørsvik, Elin; Vadstein, Olav; Bakke, Ingrid. (2021) UV treatment in RAS influences the rearing water microbiota and reduces the survival of European lobster larvae (Homarus gammarus). Aquacultural Engineering
Academic article
Palandre, Hugues; Brembu, Tore; Vadstein, Olav. (2021) Development of Molecular Tools in the Diatom Coscinodiscus wailesii. Norges teknisk-naturvitenskapelige universitet
Master thesis
Fossmark, Ragnhild Olsen; Attramadal, Kari; Kristian, Nordøy; Østerhus, Stein Wold; Vadstein, Olav. (2021) A comparison of two seawater adaptation strategies for Atlantic salmon post-smolt (Salmo salar) grown in recirculating aquaculture systems (RAS): Nitrification, water and gut microbiota, and performance of fish. Aquaculture
Academic article
Skisland, Maren Moen; Vadstein, Olav; Brembu, Tore. (2021) Functional studies of two silicon transporter-associated kinases in the diatom Thalassiosira pseudonana. Norges teknisk-naturvitenskapelige universitet
Master thesis
Copetti, Fabrini; Gregoracci, Gustavo Bueno; Vadstein, Olav; Schveitzer, Rodrigo. (2021) Management of biofloc concentrations as an ecological strategy for microbial control in intensive shrimp culture. Aquaculture
Academic article
Harris, Ingrid Eskerud; Vadstein, Olav; Brembu, Tore. (2021) Functional studies of a family of ankyrin repeat-containing proteins in the diatom Thalassiosira pseudonana hypothesized to be involved in frustule morphogenesis. Norges teknisk-naturvitenskapelige universitet
Master thesis
Sjevelås, Christine; Vadstein, Olav; Brembu, Tore. (2021) Morphological changes in the frustule of Thalassiosira pseudonana by genetic manipulation and cultivation conditions. Norges teknisk-naturvitenskapelige universitet
Master thesis
Bentzen, Kristin Leonore Lillebo; Vadstein, Olav; Brembu, Tore. (2021) Functional studies of two genes encoding closely related group II silicanins in the diatom Thalassiosira pseudonana. Norges teknisk-naturvitenskapelige universitet
Master thesis
Volpe, Charlotte; Vadstein, Olav; Andersen, Geir; Andersen, Tom. (2021) Nanocosm: A well plate photobioreactor for environmental and biotechnological studies. Lab on a Chip
Academic article
Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2021) Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater. Scientific Reports
Academic article

2020

Vadstein, Olav; Rong, Ragnhild Lind. (2020) Microbial Quality of the copepod Acartia tonsa for use as live feed for marine larvae. NTNU
Master thesis
Navada, Sharada; Sebastianpillai, Marianna; Kolarevic, Jelena; Fossmark, Ragnhild Olsen; Tveten, Ann-Kristin; Gaumet, Frederic; Mikkelsen, Øyvind; Vadstein, Olav. (2020) A salty start: Brackish water start-up as a microbial management strategy for nitrifying bioreactors with variable salinity. Science of the Total Environment
Academic article
Navada, Sharada; Knutsen, Maja F.; Bakke, Ingrid; Vadstein, Olav. (2020) Nitrifying biofilms deprived of organic carbon show higher functional resilience to increases in carbon supply. Scientific Reports
Academic article
Fossmark, Ragnhild Olsen; Vadstein, Olav; Rosten, Trond Waldemar; Bakke, Ingrid; Koseto, Deni; Bugten, Anette Voll; Helberg, Gaute Alexander Nedberg; Nesje, Jenny; Jørgensen, Niels O.G.; Raspati, Gema Sakti. (2020) Effects of reduced organic matter loading through membrane filtration on the microbial community dynamics in recirculating aquaculture systems (RAS) with Atlantic salmon parr (Salmo salar). Aquaculture
Academic article
Vadstein, Olav. (2020) Dårlig svar om korrelasjon. Klassekampen
Commentary
Vadstein, Olav. (2020) Samvariasjon gir ingen årsakssammenheng. Klassekampen
Commentary
Obrestad, Kathrine; Vadstein, Olav; Einum, Sigurd. (2020) The effect of gut microbiota on fitness in Daphnia magna. NTNU
Master thesis
Årdal, Vilde; Vadstein, Olav; Brembu, Tore. (2020) Cell Wall Biomineralization in the Centric Diatom Thalassiosira pseudonana: Investigation of the Putative Role of Silicanin Tp23191 and the Impact of Microfilaments and Microtubules. Norges teknisk-naturvitenskapelige universitet
Master thesis
Jafari, Leila; Vadstein, Olav. (2020) The Effects of Protein Skimmer, Hydrogen Peroxide and Salinity on Water Quality in RAS. Norges teknisk-naturvitenskapelige universitet
Master thesis
Gresseth, Marita; Vadstein, Olav; Brembu, Tore. (2020) Investigating fluorescence in transformants expressing a silicanin-mNeonGreen fusion protein, and the effect of cytoskeleton inhibitors on frustule biosynthesis in the diatom Thalassiosira pseudonana. Norges teknisk-naturvitenskapelige universitet
Master thesis
Bakke, Ingrid; Gomez de la Torre Canny, Sol; Nordgård, Catherine Taylor; Vadstein, Olav; Dunker, Karen; Sletmoen, Marit. (2020) Bakterier på lakseskinn – har de noen funksjon?. Norsk Fiskeoppdrett
Popular science article
Bakke, Ingrid; Gomez de la Torre Canny, Sol; Nordgård, Catherine Taylor; Vadstein, Olav; Dunker, Karen; Sletmoen, Marit. (2020) Bakterier på lakseskinn – har de noen funksjon?. Kyst.no
Popular science article
Navada, Sharada; Vadstein, Olav; Gaumet, Frederic; Tveten, Ann-Kristin; Spanu, Claudia; Mikkelsen, Øyvind; Kolarevic, Jelena. (2020) Biofilms remember: Osmotic stress priming as a microbial management strategy for improving salinity acclimation in nitrifying biofilms. Water Research
Academic article
Jin, Yang; Olsen, Rolf Erik; Harvey, Thomas Nelson; Østensen, Mari-Ann; Li, Keshuai; Santi, Nina; Vadstein, Olav; Bones, Atle M.; Vik, Jon Olav; Sandve, Simen Rød. (2020) Comparative transcriptomics reveals domestication‐associated features of Atlantic salmon lipid metabolism. Molecular Ecology
Academic article
Vestrum, Ragnhild Inderberg; Attramadal, Kari; Vadstein, Olav; Gundersen, Madeleine Stenshorne; Bakke, Ingrid. (2020) Bacterial community assembly in Atlantic cod larvae (Gadus morhua): Contributions of ecological processes and metacommunity structure. FEMS Microbiology Ecology
Academic article

2019

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
Le, Duy; Nguyen, Phuoc; Nguyen, Dung; Dierckens, Kristof; Boon, Nico; Lacoere, Tim; Kerckhof, Frederiek-Maarten; Vrieze, Jo De; Vadstein, Olav; Bossier, Peter. (2019) Gut Microbiota of Migrating Wild Rabbit Fish (Siganus guttatus) Larvae Have Low Spatial and Temporal Variability. Microbial Ecology
Academic article
Navada, Sharada; Vadstein, Olav; Tveten, Ann-Kristin; Verstege, Gerhardus C.; Terjesen, Bendik Fyhn; Mota, Vasco C.; Venkatraman, Vishwesh; Gaumet, Frederic; Mikkelsen, Øyvind; Kamstra, Andries. (2019) Influence of rate of salinity increase on nitrifying biofilms. Journal of Cleaner Production
Academic article
Bakke, Ingrid; Attramadal, Kari; Vestrum, Ragnhild Inderberg; Vadstein, Olav. (2019) Controlling Factors for Community Assembly in Developing Cod Larvae (Gadus morhua).
Non-fiction chapter
Heggeset, Tonje Marita Bjerkan; Ertesvåg, Helga; Liu, Bin; Ellingsen, Trond Erling; Vadstein, Olav; Aasen, Inga Marie. (2019) Lipid and DHA-production in Aurantiochytrium sp. – Responses to nitrogen starvation and oxygen limitation revealed by analyses of production kinetics and global transcriptomes. Scientific Reports
Academic article
Hess-Erga, Ole-Kristian; Moreno-Andrés, Javier; Enger, Øivind; Vadstein, Olav. (2019) Microorganisms in ballast water: Disinfection, community dynamics, and implications for management. Science of the Total Environment
Academic literature review
Nymark, Marianne; Volpe, Charlotte; Hafskjold, Marthe Caroline Grønbech; Kirst, Henning; Serif, Manuel; Vadstein, Olav; Bones, Atle M.; Melis, Anastasios; Winge, Per. (2019) Loss of ALBINO3b insertase results in truncated light-harvesting antenna in diatoms. Plant Physiology
Academic article
Hoel, Sunniva; Vadstein, Olav; Jakobsen, Anita Nordeng. (2019) The Significance of Mesophilic Aeromonas spp. in Minimally Processed Ready-to-Eat Seafood. Microorganisms
Academic literature review
Røkke, Gunvor Bjerkelund; Melø, Thor Bernt; Mühlroth, Alice; Vadstein, Olav; Bones, Atle M.; Hohmann-Marriott, Martin Frank. (2019) Unique photosynthetic electron transport tuning and excitation distribution in heterokont algae. PLOS ONE
Academic article
Rojas-Tirado, Paula; Pedersen, Per Bovbjerg; Vadstein, Olav; Pedersen, Lars-Flemming. (2019) Microbial dynamics in RAS water: Effects of adding acetate as a biodegradable carbon-source. Aquacultural Engineering
Academic article
Jalili, Mahsa; Jin, Yang; Bones, Atle M.; Olsen, Yngvar; Vadstein, Olav; Østensen, Mari-Ann; Buonocore, Francesco; Gerdol, Marco; Pallavicini, Alberto; Scapigliati, Giuseppe. (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
Wang, Xinxin; Fosse, Hilde Karoline; Li, Keshuai; Chauton, Matilde Skogen; Vadstein, Olav; Reitan, Kjell Inge. (2019) Influence of nitrogen limitation on lipid accumulation and EPA and DHA content in four marine microalgae for possible use in aquafeed. Frontiers in Marine Science
Academic article

2018

Hoel, Sunniva; Vadstein, Olav; Jakobsen, Anita Nordeng. (2018) Growth of mesophilic Aeromonas salmonicida in an experimental model of nigiri sushi during cold storage. International journal of food microbiology
Academic article
Moreno-Andrés, Javier; Ambauen, Noemi; Vadstein, Olav; Halle, Cynthia; Acevedo-Merino, Asunción; Nebot, Enrique; Meyn, Thomas. (2018) Inactivation of marine heterotrophic bacteria in ballast water by an Electrochemical Advanced Oxidation Process. Water Research
Academic article
Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.; Vadstein, Olav; Bakke, Ingrid. (2018) Rearing water treatment induces microbial selection influencing the microbiota and pathogen associated transcripts of Cod (Gadus morhua) Larvae. Frontiers in Microbiology
Academic article
Attramadal, Kari; Bakke, Ingrid; Vadstein, Olav. (2018) Mikrobiell kontroll i lukkede og landbaserte anlegg. Norsk Fiskeoppdrett
Popular science article
Tsagaraki, Tatiana Margo; Pree, Bernadette; Leiknes, Øystein; Larsen, Aud; Bratbak, Gunnar; Øvreås, Lise; Egge, Jorun Karin; Spanek, Roman; Paulsen, Maria Lund; Olsen, Yngvar. (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; Forberg, Torunn; Olsen, Yngvar; Verdegem, Marc; Giatsis, Cristos; Skjermo, Jorunn; Aasen, Inga Marie; Gatesoupe, François-Joel. (2018) Managing the microbial community of marine fish larvae: a holistic perspective for larviculture. Frontiers in Microbiology
Academic literature review
Sanchez, Nicolas; Brown, Eunice Nana Adjoa; Olsen, Yngvar; Vadstein, Olav; Iriarte, Jose Luis; Gonzalez, Humberto E.; Ardelan, Murat Van. (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
Jin, Yang; Olsen, Rolf Erik; Østensen, Mari-Ann; Gillard, Gareth Benjamin; Li, Keshuai; Harvey, Thomas Nelson; Santi, Nina; Vadstein, Olav; Vik, Jon Olav; Sandve, Simen Rød. (2018) Transcriptional regulation of lipid metabolism when salmon fry switches from endogenous to exogenous feeding. Aquaculture
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; Luef, Birgit; Forberg, Torunn; Bakke, Ingrid; Vadstein, Olav. (2018) Investigating fish larvae-microbe interactions in the 21st century: Old questions studied with new tools.
Non-fiction chapter
Rojas-Tirado, Paula; Pedersen, Per Bovbjerg; Vadstein, Olav; Pedersen, Lars-Flemming. (2018) Changes in microbial water quality in RAS following altered feed loading. Aquacultural Engineering
Academic article

2017

Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Vadstein, Olav; Mironov, Vladimir; Bakke, Rune; Østgaard, Kjetill; Bakke, Ingrid. (2017) Anaerobic digestion of pig manure supernatant at high ammonia concentrations characterized by high abundances of Methanosaeta and non-euryarchaeotal archaea. Scientific Reports
Academic article
Gonzalez Silva, Blanca Magdalena; Rønning, Are J.; Andreassen, Ingrid Krogrud; Bakke, Ingrid; Cervantes, Francisco J.; Østgaard, Kjetill; Vadstein, Olav. (2017) Changes in the microbial community of an anammox consortium during adaptation to marine conditions revealed by 454 pyrosequencing. Applied Microbiology and Biotechnology
Academic article
Hoel, Sunniva; Vadstein, Olav; Jakobsen, Anita Nordeng. (2017) Species distribution and prevalence of putative virulence factors in mesophilic Aeromonas spp. isolated from fresh retail sushi. Frontiers in Microbiology
Academic article
Trinh, Thi Truc Ly; Bakke, Ingrid; Vadstein, Olav. (2017) Correlations of age and growth rate with microbiota composition in Atlantic cod (Gadus morhua) larvae. Scientific Reports
Academic article
Brembu, Tore; Chauton, Matilde Skogen; Winge, Per; Bones, Atle M.; Vadstein, Olav. (2017) Dynamic responses to silicon in Thalasiossira pseudonana - Identification, characterisation and classification of signature genes and their corresponding protein motifs. Scientific Reports
Academic article
Hoel, Sunniva; Jakobsen, Anita Nordeng; Vadstein, Olav. (2017) Effects of storage temperature on bacterial growth rates and community structure in fresh retail sushi. Journal of Applied Microbiology
Academic article
Mühlroth, Alice; Winge, Per; El Assimi, Aimen; Jouhet, Juliette; Maréchal, Eric; Hohmann-Marriott, Martin Frank; Vadstein, Olav; Bones, Atle M.. (2017) Mechanisms of phosphorus acquisition and lipid class remodeling under P limitation in a Marine Microalga. Plant Physiology
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; Vadstein, Olav. (2016) Correlation between microbiota and growth in Mangrove Killifish (Kryptolebias marmoratus) and Atlantic cod (Gadus morhua). Scientific Reports
Academic article
Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2016) Nitrification at different salinities: Biofilm community composition and physiological plasticity. Water Research
Academic article
Attramadal, Kari; Minniti, Giusi; Øie, Gunvor; Kjørsvik, Elin; Østensen, Mari-Ann; Bakke, Ingrid; Vadstein, Olav. (2016) Microbial maturation of intake water at different carrying capacities affects microbial control in rearing tanks for marine fish larvae. Aquaculture
Academic article
Romann, Julien Clement; Chauton, Mathilde Skogen; Hanetho, Sidsel Meli; Vebner, Marius Juelsrud; Heldal, Mikal; Thaulow, Christian; Vadstein, Olav; Tranell, Gabriella; Einarsrud, Mari-Ann. (2016) Diatom frustules as a biomaterial: effects of chemical treatment on organic material removal and mechanical properties in cleaned frustules from two Coscinodiscus species. Journal of porous materials
Academic article
Liu, Bin; Ertesvåg, Helga; Aasen, Inga Marie; Vadstein, Olav; Brautaset, Trygve; Heggeset, Tonje Marita Bjerkan. (2016) Draft genome sequence of the docosahexaenoic acid producing thraustochytrid Aurantiochytrium sp. T66. Genomics Data
Academic article
Aasen, Inga Marie; Ertesvåg, Helga; Heggeset, Tonje Marita Bjerkan; Liu, Bin; Brautaset, Trygve; Vadstein, Olav; Ellingsen, Trond Erling. (2016) Thraustochytrids as production organisms for docosahexaenoic acid (DHA), squalene, and carotenoids. Applied Microbiology and Biotechnology
Academic literature review
Bakke, Ingrid; Åm, Ann Louise; Kolarevic, Jelena; Ytrestøyl, Trine; Vadstein, Olav; Attramadal, Kari Johanne Kihle; Terjesen, Bendik Fyhn. (2016) Microbial community dynamics in semi-commercial RAS for production of Atlantic salmon post-smolts at different salinities. Aquacultural Engineering
Academic article

2015

Mühlroth, Alice; Assimi, AE; Røkke, Gunvor; Despres, Julie; Winge, Per; Bruheim, Per; Hohmann-Marriott, Martin Frank; Vadstein, Olav; Bones, Atle M.. (2015) Transcriptional regulation of lipid accumulation in phosphorus limited Nannochloropsis oceanica. European journal of phycology
Conference abstract
Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Bakke, Rune; Vadstein, Olav; Østgaard, Kjetill; Bakke, Ingrid. (2015) Microbial community dynamics and biogas production from manure fractions in sludge bed anaerobic digestion. Journal of Applied Microbiology
Academic article
Romann, Julien Clement; Valmalette, Jean-Christophe; Chauton, Matilde Skogen; Tranell, Gabriella; Einarsrud, Mari-Ann; Vadstein, Olav. (2015) Wavelength and orientation dependent capture of light by diatom frustule nanostructures. Scientific Reports
Academic article
Rehberg-Haas, S.; Meyer, S.; Tielmann, M.; Lippemeier, S.; Vadstein, Olav; Bakke, Ingrid; Kjørsvik, Elin; Evjemo, Jan Ove; Schulz, C.. (2015) Use of the microalga Pavlova viridis as enrichment product for the feeding of Atlantic cod larvae (Gadus morhua). Aquaculture
Academic article
Bakke, Ingrid; Coward, Eivind; Andersen, Tom; Vadstein, Olav. (2015) Selection in the host structures the microbiota associated with developing cod larvae (Gadus morhua). Environmental Microbiology
Academic article
Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bones, Atle M.; Vadstein, Olav; Kjørsvik, Elin; Olsen, Yngvar. (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
Skjermo, Jorunn; Bakke, Ingrid; Dahle, Stine Veronica Wiborg; Vadstein, Olav. (2015) Probiotic strains introduced through live feed and rearingwater have low colonizing success in developing Atlantic cod larvae. Aquaculture
Academic article
Chauton, Matilde Skogen; Skolem, Lotte Maria Beate; Olsen, Lasse Mork; Vullum, Per Erik; Walmsley, John; Vadstein, Olav. (2015) Titanium uptake and incorporation into silica nanostructures by the diatom Pinnularia sp. (Bacillariophyceae). Journal of Applied Phycology
Academic article
Hoel, Sunniva; Mehli, Lisbeth; Bruheim, Torkjel; Vadstein, Olav; Jakobsen, Anita Nordeng. (2015) Assessment of Microbiological Quality of Retail Fresh Sushi from Selected Sources in Norway. Journal of Food Protection
Academic article

2014

Wang, Xinxin; Broch, Ole Jacob; Forbord, Silje; Handå, Aleksander; Skjermo, Jorunn; Reitan, Kjell Inge; Vadstein, Olav; Olsen, Yngvar. (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
Wold, Per-Arvid; Holan, Astrid Buran; Øie, Gunvor; Attramadal, Kari; Bakke, Ingrid; Vadstein, Olav; Leiknes, TorOve. (2014) Effects of membrane filtration on bacterial number and microbial diversity in marine recirculating aquaculture system (RAS) for Atlantic cod (Gadus morhua L.) production. Aquaculture
Academic article
Luong, Anh D; Laender, Frederik De; 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
Chauton, Matilde Skogen; Vadstein, Olav; Reitan, Kjell Inge. (2014) Nye marine ressurser: Kan vi bruke mikroalger i fiskefor?. Norsk Fiskeoppdrett
Professional 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
Attramadal, Kari; Minniti, Giusi; Øie, Gunvor; Kjørsvik, Elin; Østensen, Mari-Ann; Bakke, Ingrid; Vadstein, Olav. (2014) Microbial control of the rearing water of larvae.
Non-fiction chapter
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
Schryver, Peter De; Vadstein, Olav. (2014) Ecological theory as a foundation to control pathogenic invasion in aquaculture. The ISME Journal
Academic article

2013

Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bakke, Ingrid; Bones, Atle M.; Vadstein, Olav; Kjørsvik, Elin; Olsen, Yngvar. (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
Vadstein, Olav; Bergh, Øivind; Gatesoupe, Francois-Joel; Galindo-Villegas, Jorge; Mulero, Victoriano; Picchietti, Simona; Scapigliati, Giuseppe; Makridis, Pavlos; Olsen, Yngvar; Dierckens, Kristof. (2013) Microbiology and immunology of fish larvae. Reviews in Aquaculture
Academic literature review
Olsen, Lasse Mork; Ardelan, Murat Van; Hewes, Christopher D.; Holm-Hansen, Osmund; Reiss, Christian; Bizsel, Nihayet; Sakshaug, Egil; Vadstein, Olav. (2013) Microbial biogeography during austral summer 2007 in the surface waters around the South Shetland Islands, Antarctica. Aquatic Microbial Ecology
Academic article
Mühlroth, Alice; Li, Keshuai; Røkke, Gunvor; Winge, Per; Olsen, Yngvar; Hohmann-Marriott, Martin Frank; Vadstein, Olav; Bones, Atle M.. (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
Bakke, Ingrid; Skjermo, Jorunn; Vo, Tu Anh; Vadstein, Olav. (2013) Live feed is not a major determinant of the microbiota associated with cod larvae (Gadus morhua). Environmental Microbiology Reports
Academic article
Gatesoupe, Francois-Joel; Covès, Denis; Ortega, Aurelio; Papandroulakis, Nikos; Vadstein, Olav; Gándara, Fernando de la. (2013) A spatiotemporal study of bacterial community profiles associated with Atlantic bluefin tuna larvae, Thunnus thynnus L., in three Mediterranean hatcheries. Aquaculture 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
Olsen, Yngvar; Reinertsen, Helge; Sommer, Ulrich; Vadstein, Olav. (2013) 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
Blancheton, Jean-Paul; Attramadal, Kari; Michaud, L.; d’Orbcastele, E. Roque; Vadstein, Olav. (2013) Insight into bacterial population in aquaculture systems and its implication. Aquacultural Engineering
Academic literature review
Chauton, Matilde Skogen; Winge, Per; Brembu, Tore; Vadstein, Olav; Bones, Atle M.. (2013) Gene regulation of carbon fixation, storage, and utilization in the diatom phaeodactylum tricornutum acclimated to light/dark cycles. Plant Physiology
Academic article

2012

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
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
Attramadal, Kari; Salvesen, Ingrid; Xue, Renyu; Øie, Gunvor; Størseth, Trond Røvik; Vadstein, Olav; Olsen, Yngvar. (2012) Recirculation as a possible microbial control strategy in the production of marine larvae. Aquacultural Engineering
Academic article
Chauton, Matilde Skogen; Vadstein, Olav; Eggen, Marit; Tranell, Gabriella. (2012) Alger kan gi geniale solceller. Vitenskap-og-teknologi - NRK
Popular science article
Vadstein, Olav; Olsen, Lasse Mork; Andersen, Tom. (2012) Prey-predator dynamics in rotifers: density-dependent consequences of spatial heterogeneity due to surface attachment. Ecology
Academic article
Forberg, Torunn; Vestrum, Ragnhild Inderberg; Arukwe, Augustine; Vadstein, Olav. (2012) Bacterial composition and activity determines host gene-expression responses in gnotobiotic Atlantic cod (Gadus morhua) larvae. Veterinary Microbiology
Academic article
Olsen, Yngvar; Tokle, Nils Egil; Vadstein, Olav. (2012) Hvordan forvalte vannmassene? Om samspillet mellom næringssalt-utslipp og det planktoniske økosystemet.
Academic chapter
Fjellheim, Anders; Playfoot, Karina Jane; Skjermo, Jorunn; Vadstein, Olav. (2012) Inter-individual variation in the dominant intestinal microbiota of reared Atlantic cod (Gadus morhua L.) larvae. Aquaculture Research
Academic article
Chauton, Matilde Skogen; Vadstein, Olav; Eggen, Marit; Tranell, Gabriella. (2012) Alger kan gi geniale solceller. Forskning.no
Popular science article

2011

Vadstein, Olav. (2011) Large variation in growth-limiting factors for marine heterotrophic bacteria in the Arctic waters of Spitsbergen (78 degrees N). Aquatic Microbial Ecology
Academic article
Forberg, Torunn; Arukwe, Augustine; Vadstein, Olav. (2011) A protocol and cultivation system for gnotobiotic Atlantic cod larvae (Gadus morhua L.) as a tool to study host microbe interactions. Aquaculture
Academic article
Forberg, Torunn; Arukwe, Augustine; Vadstein, Olav. (2011) Two strategies to unravel gene expression responses of host-microbe interactions in cod (Gadus morhua) larvae. Aquaculture Research
Academic article
Bakke, Ingrid; Schryver, Peter De; Boon, Nico; Vadstein, Olav. (2011) PCR-based community structure studies of Bacteria associated with eukaryotic organisms: A simple PCR strategy to avoid co-amplification of eukaryotic DNA. Journal of Microbiological Methods
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

2010

Fjellheim, Anders; Klinkenberg, Geir; Skjermo, Jorunn; Aasen, Inga-Marie; Vadstein, Olav. (2010) Selection of candidate probionts by two different screening strategies from Atlantic cod (Gadus morhua L.) larvae. Veterinary Microbiology
Academic article
Attramadal, Kari; Buran, Astrid; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2010) Recirculation: Microbial Control Strategy For Intensive Marine Larviculture. Global Aquaculture Advocate
Professional article
Hess-Erga, Ole-Kristian; Blomvågnes-Bakke, Bente; Vadstein, Olav. (2010) Recolonization by heterotrophic bacteria after UV irradiation or ozonation of seawater; a simulation of ballast water treatment. Water Research
Academic article

2009

Saage, Andrea; Vadstein, Olav; Sommer, Ulrich. (2009) Feeding behaviour of adult Centropages hamatus (Copepoda, Calanoida): Functional response and selective feeding experiments. Journal of Sea Research
Academic article
Vestrum, Ragnhild Inderberg; Forberg, Torunn; Vadstein, Olav. (2009) Impact of live versus dead bacteria on survival, growth, and gene expression in Atlantic cod (Gadus morhua) larvae.
Academic chapter
Forberg, Torunn; Vadstein, Olav; Arukwe, Augustine. (2009) Strategies to unravel gene expression responses of host-microbe interactions in cod (Gadus morhua) larvae.
Academic chapter
Vadstein, Olav. (2009) Interactions in the planktonic food web.
Academic chapter

2008

Saage, Andrea; Altin, Dag; Vadstein, Olav; Sommer, Ulrich. (2008) Trophic position of Calanus finmarchicus (Copepoda, Calanoida) in the Trondheim Fjord. Journal of Sea Research
Academic article
Hess-Erga, Ole-Kristian; Attramadal, Kari; Vadstein, Olav. (2008) Biotic and abiotic particles protect marine heterotrophic bacteria during UV and ozone disinfection. Aquatic Biology
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
Fjellheim, Anders; Skjermo, Jorunn; Vadstein, Olav. (2008) Evaluation of probiotic bacteria for Atlantic cod (Gadhus morhua L.) larvae. World Aquaculture
Academic article

2007

Skjermo, Jorunn; Fjellheim, Anders; Klinkenberg, Geir; Aasen, Inga Marie; Vadstein, Olav. (2007) Screening of probiotic bacteria for Atlantic cod larvae. Global Aquaculture Advocate
Popular science article
Fjellheim, Anders; Playfoot, Karina Jane; Skjermo, Jorunn; Vadstein, Olav. (2007) Vibrionaceae dominates the microflora antagonistic towards Listonella anguillarum in the intestine of cultured Atlantic cod (Gadus morhua L.) larvae. Aquaculture
Academic article
Næss, Camilla; Vadstein, Olav. (2007) Food selectivity and trophic position of mesozooplankton in the Trondheim fjord. NTNU, Institutt for biologi
Master thesis
Dooms, Stefania; Papakostas, Spiros; Hoffman, Stefan; Delbare, Daan; Dierckens, Kristof; Triantafyllidis, Alexander; Wolf, Tania De; Vadstein, Olav; Abatzopoulos, Theodore J.; Sorgeloos, Patrick. (2007) Denaturing gradient gel electrophoresis (DGGE) as a tool for the characterisation of Brachionus sp. strains. Aquaculture
Academic article
Kostopoulou, Venetia; Vadstein, Olav. (2007) Growth performance of the rotifers Brachionus plicatilis, B. ‘Nevada’ and B. ‘Cayman’ under different food concentrations. Aquaculture
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 science article

2006

Papakostas, Spiros; Dooms, Stefania; Triantafyllidis, Alexander; Deloof, Daphne; Kappas, Ilias; Dierckens, Kristof; Wolf, Tania De; Bossier, Peter; Vadstein, Olav; Sorgeloos, Patrick. (2006) Evaluation of DNA methodologies in identifying Brachionus species used in European hatcheries. Aquaculture
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
Playfoot, Karina Jane; Vadstein, Olav. (2006) Isolation and characterisation of bacteria from the gut of cod larvae (Gadus morhua L.) for consideration of probiotic effects. NTNU, Institutt for biologi
Master thesis
Stibor, Herwig; Gelzleichter, Anna; Hantzsche, Florian; Sommer, Ulrich; Striebel, Maren; Vadstein, Olav; Olsen, Yngvar. (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
Olsen, Yngvar; Agusti, Susana; Andersen, T.; Duarte, Carlos; Gasol, J. M.; Gismervik, Ingrid; Heiskanen, Anna-Stiina.; Hoell, E.; Kuuppo, Pirjo.; Lignell, Risto. (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

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
Fjellheim, Anders; Playfoot, Karina; Aasen, Inga Marie; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2005) Evaluation of potential probiotics for cod larvae: Impact of initial screening strategy. Special Publications (European Aquaculture Society)
Academic article
Kostopoulou, Venetia; Vadstein, Olav. (2005) Growth kinetics in three strains of the Brachionus plicatilis species complex. Special Publications (European Aquaculture Society)
Academic article
Playfoot, Karina; Fjellheim, Anders; Vadstein, Olav. (2005) Isolation and characterisation of bacteria from the gut of cod larvae for consideration of probiotic effects. 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
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
Fjellheim, Anders; Playfoot, Karina; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2005) Characterization of the dominant and the antagonistic bacterial flora of cod (Gadus morhua L.) larvae reared under different conditions. Special Publications (European Aquaculture Society)
Academic article
Skjermo, Jorunn; Salvesen, Ingrid; Fjellheim, Anders; Størseth, Trond; Vadstein, Olav. (2005) Probiotic approach for health management in juvenile production. Special Publications (European Aquaculture Society)
Academic article
Salvesen, Ingrid; Attramadal, Kari; Vadstein, Olav. (2005) Interactions between bacteria and suspended particles in intensive larval culture: A comparison between microalgae, algal concentrate and clay. Special Publications (European Aquaculture Society)
Academic article
Salvesen, Ingrid; Attramadal, Kari; Vadstein, Olav. (2005) Interactions between bacteria and suspended particles in intensive larval culture: A comparison between microalgae, algal concentrate and clay. Special Publications (European Aquaculture Society)
Academic article
Sommer, Ulrich; Hansen, Thomas; Blum, Olga; Holzner, Nina; Vadstein, Olav; Stibor, Herwig. (2005) Copepod and microzooplankton grazing in mesocosms fertilised with different Si : N ratios: no overlap between food spectra and Si : N influence on zooplankton trophic level. Oecologia
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
Fjellheim, Anders; Playfoot, Karina; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2005) Characterization of the dominant and the antagonistic bacterial flora of cod (Gadus morhua L.) larvae reared under different conditions. European Aquaculture Society
Anthology
Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2005) Assimilative carrying capacity: Contribution and impact on the pelagic system. European Aquaculture Society
Anthology

2004

Vadstein, Olav; Mo, T.A.; Bergh, Ø.. (2004) Microbial interactions, prophylaxis and diseases. Blackwell Publishing
Non-fiction monograph
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; Katechakis, Alexis; Lippert, Bettina; Løseth, Kjetil; Peters, Claudia. (2004) Copepods act as a switch between alternative trophic cascades in marine pelagic food webs. Ecology Letters
Academic article
Vadstein, Olav; Stibor, Herwig; Lippert, Bettina; Loseth, K; Roederer, Wendy; Sundt-Hansen, Line E.B.; Olsen, Yngvar. (2004) Moderate increase in the biomass of omnivorous copepods may ease grazing control of planktonic algae. Marine Ecology Progress Series
Academic article
Sommer, Ulrich; Hansen, T; Stibor, H; Vadstein, Olav. (2004) Persistence of phytoplankton responses to different Si:N ratios under mesozooplankton grazing pressure: a mesocosm study with NE Atlantic plankton. Marine Ecology Progress Series
Academic article
Vadstein, Olav; Mo, Tor Atle; Bergh, Øivind. (2004) Microbial interactions, prophylaxis and diseases.
Academic chapter

2003

Vadstein, Olav; Olsen, Lasse Mork; Busch, A.; Andersen, Tom; Reinertsen, Helge. (2003) Is phosphorus limitation of heterotrophic bacteria and accumulation of degradable DOC a normal phenomenon in phosphorus limited systems? A microcosm study. FEMS Microbiology Ecology
Academic article
Gismervik, Ingrid; Vadstein, Olav; Olsen, Yngvar. (2003) Marine mesocosm Zooplankton response to nutrients. Scope Newsletter
Conference abstract

2002

Reitan, Kjell Inge; Øie, Gunvor; Vadstein, Olav; Reinertsen, Helge. (2002) Response on scallop culture to enhanced nutrient supply by experimental fertilisation of a landlocked bay. Hydrobiologia
Academic article
Gismervik, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2002) Micro- and mesozooplankton response to enhanced nutrient input – a mesocosm study. Hydrobiologia
Academic article
Øie, Gunvor; Reitan, Kjell Inge; Vadstein, Olav; Reinertsen, Helge. (2002) Effect of nutrient supply on growth of blue mussels (Mytilus edulis) in a landlocked bay. Hydrobiologia
Academic article
Olsen, Lasse Mork; Reinertsen, Helge; Vadstein, Olav. (2002) Can phosphorus limitation inhibit dissolved organic carbon consumption in aquatic microbial food webs? A microcosm study. Microbial Ecology
Academic article
Gismervik, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2002) Micro- and mesozooplankton response to enhanced nutrient input - a mesocosm study. Hydrobiologia
Academic article

2001

Makridis, Pavlos; Bergh, Øivind; Skjermo, Jorunn; Vadstein, Olav. (2001) Addition of bacteria bioencapsulated in Artemia metanauplii to a rearing system for halibut larvae. Aquaculture International
Academic article

1995

Skjermo, Jorunn; Defoort, Thomas; Dehasque, Marleen; Espevik, Terje; Olsen, Yngvar; Skjåk-Bræk, Gudmund; Sorgeloost, Patrick; Vadstein, Olav. (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
Salvesen, Ingrid; Vadstein, Olav. (1995) Surface disinfection of eggs from marine fish: Evaluation of four chemicals. Aquaculture International
Academic article

Journal publications

Khadka, Sujan; Fernando, Fernando; Fredriksen, Simen; Aasen, Anna; Dembe, Nicholas; Vadstein, Olav; Bakke, Ingrid. (2026) Biofilm communities in biofilters are structuring the rearing water microbiota in recirculating aquaculture systems (RAS) through dispersal of bacteria. Aquaculture
Academic article
Fernando, Fernando; Khadka, Sujan; Hofstad, Kristine; Fredriksen, Simen; Vadstein, Olav; Bakke, Ingrid. (2026) Mature nitrifying biofilters counteract invasion by rapid-growing heterotrophic bacteria in recirculating aquaculture systems (RAS). Aquaculture
Academic article
Bandara, Kasun Anuruddha; Benini, Elisa; Sørensen, Sune Riis; Tomkiewicz, Jonna; Vadstein, Olav; Politis, Sebastian N.. (2025) β-glucan enhances ontogeny and modulates the bacteriome and immuno-stress response of European eel larvae. Aquaculture
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
Fjellheim, Anders; Playfoot, Karina; Aasen, Inga Marie; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2005) Evaluation of potential probiotics for cod larvae: Impact of initial screening strategy. Special Publications (European Aquaculture Society)
Academic article
Kostopoulou, Venetia; Vadstein, Olav. (2005) Growth kinetics in three strains of the Brachionus plicatilis species complex. Special Publications (European Aquaculture Society)
Academic article
Playfoot, Karina; Fjellheim, Anders; Vadstein, Olav. (2005) Isolation and characterisation of bacteria from the gut of cod larvae for consideration of probiotic effects. 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
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
Fjellheim, Anders; Playfoot, Karina; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2005) Characterization of the dominant and the antagonistic bacterial flora of cod (Gadus morhua L.) larvae reared under different conditions. Special Publications (European Aquaculture Society)
Academic article
Reitan, Kjell Inge; Øie, Gunvor; Vadstein, Olav; Reinertsen, Helge. (2002) Response on scallop culture to enhanced nutrient supply by experimental fertilisation of a landlocked bay. Hydrobiologia
Academic article
Gismervik, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2002) Micro- and mesozooplankton response to enhanced nutrient input – a mesocosm study. Hydrobiologia
Academic article
Papakostas, Spiros; Dooms, Stefania; Triantafyllidis, Alexander; Deloof, Daphne; Kappas, Ilias; Dierckens, Kristof; Wolf, Tania De; Bossier, Peter; Vadstein, Olav; Sorgeloos, Patrick. (2006) Evaluation of DNA methodologies in identifying Brachionus species used in European hatcheries. Aquaculture
Academic article
Skjermo, Jorunn; Fjellheim, Anders; Klinkenberg, Geir; Aasen, Inga Marie; Vadstein, Olav. (2007) Screening of probiotic bacteria for Atlantic cod larvae. Global Aquaculture Advocate
Popular science article
Skjermo, Jorunn; Salvesen, Ingrid; Fjellheim, Anders; Størseth, Trond; Vadstein, Olav. (2005) Probiotic approach for health management in juvenile production. Special Publications (European Aquaculture Society)
Academic article
Salvesen, Ingrid; Attramadal, Kari; Vadstein, Olav. (2005) Interactions between bacteria and suspended particles in intensive larval culture: A comparison between microalgae, algal concentrate and clay. Special Publications (European Aquaculture Society)
Academic article
Øie, Gunvor; Reitan, Kjell Inge; Vadstein, Olav; Reinertsen, Helge. (2002) Effect of nutrient supply on growth of blue mussels (Mytilus edulis) in a landlocked bay. Hydrobiologia
Academic article
Olsen, Lasse Mork; Reinertsen, Helge; Vadstein, Olav. (2002) Can phosphorus limitation inhibit dissolved organic carbon consumption in aquatic microbial food webs? A microcosm study. Microbial Ecology
Academic article
Khadka, Sujan; Vadstein, Olav; Bakke, Ingrid; Olsen, Yngvar; Attramadal, Kari Johanne Kihle. (2025) Bacteria in land-based larval rearing systems: sources of bacteria and their quantitative and qualitative influence on the microbiota of rearing water and larvae. Aquaculture
Academic article
Makridis, Pavlos; Fjellheim, Anders Jon; Skjermo, Jorunn; Vadstein, Olav. (2000) Colonization of the gut in first feeding turbot by bacterial strains added to the water or bioencapsulated in rotifers. Aquaculture International
Academic article
Salvesen, Ingrid; Attramadal, Kari; Vadstein, Olav. (2005) Interactions between bacteria and suspended particles in intensive larval culture: A comparison between microalgae, algal concentrate and clay. Special Publications (European Aquaculture Society)
Academic article
Salvesen, Ingrid; Vadstein, Olav. (2000) Evaluation of plate count methods for determination of maximum specific growth rate in mixed microbial communities, and its possible application for diversity assessment. Journal of Applied Microbiology
Academic article
Makridis, Pavlos; Fjellheim, Anders Jon; Skjermo, Jorunn; Vadstein, Olav. (2000) Control of the bacterial flora of Brachionus plicatilis and Artemia franciscana by incubation in bacterial suspensions. Aquaculture
Academic article
Vadstein, Olav. (2000) Strategies for avoiding bacterial infections: Beat them or join them. ASM news (Washington)
Academic article
Bandara, Kasun Anuruddha; Politis, Sebastian Nikitas; Sørensen, Sune Riis; Benini, Elisa; Tomkiewicz, Jonna; Vadstein, Olav. (2024) Effect of Food Amounts on Larval Performance, Bacteriome and Molecular Immunologic Development during First-Feeding Culture of European Eel. Microorganisms
Academic article
Olsen, Atle Ivar; Olsen, Yngvar; Attramada, Yngve; Christie, K; Birkbeck, T.H.; Skjermo, Jorunn; Vadstein, Olav. (2000) Effects of short term feeding of microalgae on the bacterial flora associated with juvenile Artemia fransiscana. Aquaculture
Academic article
Salvesen, Ingrid; Vadstein, Olav. (2000) Evaluation of plate count methods for determination of maximum specific growth rate in mixed microbial communities, and its possible application for diversity assessment. Journal of Applied Microbiology
Academic article
Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Vadstein, Olav; Mironov, Vladimir; Bakke, Rune; Østgaard, Kjetill; Bakke, Ingrid. (2017) Anaerobic digestion of pig manure supernatant at high ammonia concentrations characterized by high abundances of Methanosaeta and non-euryarchaeotal archaea. Scientific Reports
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
Vadstein, Olav. (2000) Heterotrophic, planktonic bacteria and cycling of phosphorus: Phosphorus requirements, competitive ability and food web interactions. Advances in Microbial Ecology
Academic article
Navada, Sharada; Sebastianpillai, Marianna; Kolarevic, Jelena; Fossmark, Ragnhild Olsen; Tveten, Ann-Kristin; Gaumet, Frederic; Mikkelsen, Øyvind; Vadstein, Olav. (2020) A salty start: Brackish water start-up as a microbial management strategy for nitrifying bioreactors with variable salinity. Science of the Total Environment
Academic article
Mühlroth, Alice; Assimi, AE; Røkke, Gunvor; Despres, Julie; Winge, Per; Bruheim, Per; Hohmann-Marriott, Martin Frank; Vadstein, Olav; Bones, Atle M.. (2015) Transcriptional regulation of lipid accumulation in phosphorus limited Nannochloropsis oceanica. European journal of phycology
Conference abstract
Hoel, Sunniva; Vadstein, Olav; Jakobsen, Anita Nordeng. (2018) Growth of mesophilic Aeromonas salmonicida in an experimental model of nigiri sushi during cold storage. International journal of food microbiology
Academic article
Skjermo, Jorunn; Defoort, Thomas; Dehasque, Marleen; Espevik, Terje; Olsen, Yngvar; Skjåk-Bræk, Gudmund; Sorgeloost, Patrick; Vadstein, Olav. (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
Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bakke, Ingrid; Bones, Atle M.; Vadstein, Olav; Kjørsvik, Elin; Olsen, Yngvar. (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
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
Fjellheim, Anders; Klinkenberg, Geir; Skjermo, Jorunn; Aasen, Inga-Marie; Vadstein, Olav. (2010) Selection of candidate probionts by two different screening strategies from Atlantic cod (Gadus morhua L.) larvae. Veterinary Microbiology
Academic article
Gismervik, Ingrid; Olsen, Yngvar; Vadstein, Olav. (2002) Micro- and mesozooplankton response to enhanced nutrient input - a mesocosm study. Hydrobiologia
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
Vestrum, Ragnhild Inderberg; Forberg, Torunn; Luef, Birgit; Bakke, Ingrid; Winge, Per; Olsen, Yngvar; Vadstein, Olav. (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
Wang, Xinxin; Broch, Ole Jacob; Forbord, Silje; Handå, Aleksander; Skjermo, Jorunn; Reitan, Kjell Inge; Vadstein, Olav; Olsen, Yngvar. (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
Dahle, Stine Veronica Wiborg; Attramadal, Kari; Vadstein, Olav; Hestdahl, Hans Ivar; Bakke, Ingrid. (2021) Microbial community dynamics in a commercial RAS for production of Atlantic salmon fry (Salmo salar). Aquaculture
Academic article
Mathew, K Avarachen; Ardelan, Murat Van; Villa Gonzalez, Susana; Vadstein, Olav; Sajith Vezhapparambu, Veena; Leiknes, Øystein; Mankettikkara, Rahman; Olsen, Yngvar. (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
Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Bakke, Rune; Vadstein, Olav; Østgaard, Kjetill; Bakke, Ingrid. (2015) Microbial community dynamics and biogas production from manure fractions in sludge bed anaerobic digestion. Journal of Applied Microbiology
Academic article
Vadstein, Olav; Olsen, Lasse Mork; Busch, A.; Andersen, Tom; Reinertsen, Helge. (2003) Is phosphorus limitation of heterotrophic bacteria and accumulation of degradable DOC a normal phenomenon in phosphorus limited systems? A microcosm study. FEMS Microbiology Ecology
Academic article
Gundersen, Madeleine S.; Vadstein, Olav; Bakke, Ingrid; Andersen, Tom; Morelan, Ian. (2021) The effect of periodic disturbances and carrying capacity on the significance of selection and drift in complex bacterial communities. ISME Communications
Academic article
Navada, Sharada; Gaumet, Frederic; Tveten, Ann-Kristin; Kolarevic, Jelena; Vadstein, Olav. (2021) Seeding as a start-up strategy for improving the acclimation of freshwater nitrifying bioreactors to salinity stress. Aquaculture
Academic article
Gomez de la Torre Canny, Sol; Nordgård, Catherine Taylor; Mathisen, Amalie Johanne Horn; Lorentsen, Eirik Degré; Vadstein, Olav; Bakke, Ingrid. (2023) A novel gnotobiotic experimental system for Atlantic salmon ( Salmo salar L.) reveals a microbial influence on mucosal barrier function and adipose tissue accumulation during the yolk sac stage. Frontiers in Cellular and Infection Microbiology
Academic article
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
Gonzalez Silva, Blanca Magdalena; Rønning, Are J.; Andreassen, Ingrid Krogrud; Bakke, Ingrid; Cervantes, Francisco J.; Østgaard, Kjetill; Vadstein, Olav. (2017) Changes in the microbial community of an anammox consortium during adaptation to marine conditions revealed by 454 pyrosequencing. Applied Microbiology and Biotechnology
Academic article
Jafari, Leila; Gregersen, Kim Joao de Jesus; Vadstein, Olav; Pedersen, Lars-Flemming. (2022) Removal of microparticles and bacterial inactivation in freshwater RAS by use of foam fractionation, H2O2 and NaCl. Aquaculture Research
Academic article
Attramadal, Kari J.K.; Øien, John Vegard; Kristensen, Elisabeth; Evjemo, Jan Ove; Kjørsvik, Elin; Vadstein, Olav; Bakke, Ingrid. (2021) UV treatment in RAS influences the rearing water microbiota and reduces the survival of European lobster larvae (Homarus gammarus). Aquacultural Engineering
Academic article
Navada, Sharada; Knutsen, Maja F.; Bakke, Ingrid; Vadstein, Olav. (2020) Nitrifying biofilms deprived of organic carbon show higher functional resilience to increases in carbon supply. Scientific Reports
Academic article
Saage, Andrea; Altin, Dag; Vadstein, Olav; Sommer, Ulrich. (2008) Trophic position of Calanus finmarchicus (Copepoda, Calanoida) in the Trondheim Fjord. Journal of Sea Research
Academic article
Wold, Per-Arvid; Holan, Astrid Buran; Øie, Gunvor; Attramadal, Kari; Bakke, Ingrid; Vadstein, Olav; Leiknes, TorOve. (2014) Effects of membrane filtration on bacterial number and microbial diversity in marine recirculating aquaculture system (RAS) for Atlantic cod (Gadus morhua L.) production. Aquaculture
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
Forberg, Torunn; Sjulstad, Eli Bjørnø; Bakke, Ingrid; Olsen, Yngvar; Hagiwara, Atsushi; Sakakura, Yoshitaka; Vadstein, Olav. (2016) Correlation between microbiota and growth in Mangrove Killifish (Kryptolebias marmoratus) and Atlantic cod (Gadus morhua). Scientific Reports
Academic article
Vadstein, Olav. (2011) Large variation in growth-limiting factors for marine heterotrophic bacteria in the Arctic waters of Spitsbergen (78 degrees N). Aquatic Microbial Ecology
Academic article
Hoel, Sunniva; Vadstein, Olav; Jakobsen, Anita Nordeng. (2017) Species distribution and prevalence of putative virulence factors in mesophilic Aeromonas spp. isolated from fresh retail sushi. Frontiers in Microbiology
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
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
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
Forberg, Torunn; Arukwe, Augustine; Vadstein, Olav. (2011) A protocol and cultivation system for gnotobiotic Atlantic cod larvae (Gadus morhua L.) as a tool to study host microbe interactions. Aquaculture
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
Makridis, Pavlos; Bergh, Øivind; Skjermo, Jorunn; Vadstein, Olav. (2001) Addition of bacteria bioencapsulated in Artemia metanauplii to a rearing system for halibut larvae. Aquaculture International
Academic article
Sommer, Ulrich; Hansen, Thomas; Blum, Olga; Holzner, Nina; Vadstein, Olav; Stibor, Herwig. (2005) Copepod and microzooplankton grazing in mesocosms fertilised with different Si : N ratios: no overlap between food spectra and Si : N influence on zooplankton trophic level. Oecologia
Academic article
Forberg, Torunn; Arukwe, Augustine; Vadstein, Olav. (2011) Two strategies to unravel gene expression responses of host-microbe interactions in cod (Gadus morhua) larvae. Aquaculture Research
Academic article
Stibor, Herwig; Vadstein, Olav; Diehl, Sebastian; Gelzleichter, Anna; Hansen, Thomas; Hantzsche, Florian; Katechakis, Alexis; Lippert, Bettina; Løseth, Kjetil; Peters, Claudia. (2004) Copepods act as a switch between alternative trophic cascades in marine pelagic food webs. Ecology Letters
Academic article
Vadstein, Olav; Stibor, Herwig; Lippert, Bettina; Loseth, K; Roederer, Wendy; Sundt-Hansen, Line E.B.; Olsen, Yngvar. (2004) Moderate increase in the biomass of omnivorous copepods may ease grazing control of planktonic algae. Marine Ecology Progress Series
Academic article
Salvesen, Ingrid; Vadstein, Olav. (1995) Surface disinfection of eggs from marine fish: Evaluation of four chemicals. Aquaculture International
Academic article
Fossmark, Ragnhild Olsen; Vadstein, Olav; Rosten, Trond Waldemar; Bakke, Ingrid; Koseto, Deni; Bugten, Anette Voll; Helberg, Gaute Alexander Nedberg; Nesje, Jenny; Jørgensen, Niels O.G.; Raspati, Gema Sakti. (2020) Effects of reduced organic matter loading through membrane filtration on the microbial community dynamics in recirculating aquaculture systems (RAS) with Atlantic salmon parr (Salmo salar). Aquaculture
Academic article
Le, Duy; Nguyen, Phuoc; Nguyen, Dung; Dierckens, Kristof; Boon, Nico; Lacoere, Tim; Kerckhof, Frederiek-Maarten; Vrieze, Jo De; Vadstein, Olav; Bossier, Peter. (2019) Gut Microbiota of Migrating Wild Rabbit Fish (Siganus guttatus) Larvae Have Low Spatial and Temporal Variability. Microbial Ecology
Academic article
Sommer, Ulrich; Hansen, T; Stibor, H; Vadstein, Olav. (2004) Persistence of phytoplankton responses to different Si:N ratios under mesozooplankton grazing pressure: a mesocosm study with NE Atlantic plankton. Marine Ecology Progress Series
Academic article
Moreno-Andrés, Javier; Ambauen, Noemi; Vadstein, Olav; Halle, Cynthia; Acevedo-Merino, Asunción; Nebot, Enrique; Meyn, Thomas. (2018) Inactivation of marine heterotrophic bacteria in ballast water by an Electrochemical Advanced Oxidation Process. Water Research
Academic article
Makridis, Pavlos; Vadstein, Olav. (1999) Food size selectivity of Artemia fransiscana at three developmental stages. Journal of Plankton Research
Academic article
Gundersen, Madeleine S.; Fiedler, Alexander Willi; Bakke, Ingrid; Vadstein, Olav. (2023) The impact of phage treatment on bacterial community structure is minor compared to antibiotics. Scientific Reports
Academic article
Attramadal, Kari; Salvesen, Ingrid; Xue, Renyu; Øie, Gunvor; Størseth, Trond Røvik; Vadstein, Olav; Olsen, Yngvar. (2012) Recirculation as a possible microbial control strategy in the production of marine larvae. Aquacultural Engineering
Academic article
Bandara, Kasun Anuruddha; Politis, Sebastian N.; Sganga, Daniela Eliana; Sørensen, Sune Riis; Koumpiadis, Paraskevas; Tomkiewicz, Jonna; Vadstein, Olav. (2024) Effects of European eel egg and larval stocking density on rearing water, offspring bacteriome and derived immune response. Aquaculture
Academic article
Navada, Sharada; Vadstein, Olav; Tveten, Ann-Kristin; Verstege, Gerhardus C.; Terjesen, Bendik Fyhn; Mota, Vasco C.; Venkatraman, Vishwesh; Gaumet, Frederic; Mikkelsen, Øyvind; Kamstra, Andries. (2019) Influence of rate of salinity increase on nitrifying biofilms. Journal of Cleaner Production
Academic article
Romann, Julien Clement; Valmalette, Jean-Christophe; Chauton, Matilde Skogen; Tranell, Gabriella; Einarsrud, Mari-Ann; Vadstein, Olav. (2015) Wavelength and orientation dependent capture of light by diatom frustule nanostructures. Scientific Reports
Academic article
Obrestad, Kathrine; Einum, Sigurd; Vadstein, Olav. (2022) Stochastic variation in gut bacterial community affects reproductive rates in the water flea Daphnia magna. FEMS Microbiology Ecology
Academic article
Fossmark, Ragnhild Olsen; Attramadal, Kari; Kristian, Nordøy; Østerhus, Stein Wold; Vadstein, Olav. (2021) A comparison of two seawater adaptation strategies for Atlantic salmon post-smolt (Salmo salar) grown in recirculating aquaculture systems (RAS): Nitrification, water and gut microbiota, and performance of fish. Aquaculture
Academic article
Fjellheim, Anders; Playfoot, Karina Jane; Skjermo, Jorunn; Vadstein, Olav. (2007) Vibrionaceae dominates the microflora antagonistic towards Listonella anguillarum in the intestine of cultured Atlantic cod (Gadus morhua L.) larvae. Aquaculture
Academic article
Bugten, Anette Voll; Attramadal, Kari; Fossmark, Ragnhild Olsen; Rosten, Trond Waldemar; Vadstein, Olav; Bakke, Ingrid. (2022) Changes in rearing water microbiomes in RAS induced by membrane filtration alters the hindgut microbiomes of Atlantic salmon (Salmo salar) parr. Aquaculture
Academic article
Navarro-Guillén, Carmen; Lorentsen, Eirik Degré; Perera, Erick; Yúfera, Manuel; Bakke, Ingrid; Vadstein, Olav. (2024) The role of feeding as synchronizer of gut microbiota dynamics and its potential contribution to protein digestion in greater amberjack (Seriola dumerili). Frontiers in Marine Science
Academic article
Gundersen, Madeleine S.; Vadstein, Olav; Schryver, Peter De; Attramadal, Kari. (2022) Aquaculture rearing systems induce no legacy effects in Atlantic cod larvae or their rearing water bacterial communities. Scientific Reports
Academic article
Volpe, Charlotte; Nymark, Marianne; Andersen, Tom; Winge, Per; Lavaud, Johann; Vadstein, Olav. (2024) Skeletonema marinoi ecotypes show specific habitat-related responses to fluctuating light supporting high potential for growth under photobioreactor light regime. New Phytologist
Academic article
Luong, Anh D; Laender, Frederik De; 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
Navada, Sharada; Vadstein, Olav. (2022) Salinity Acclimation Strategies in Nitrifying Bioreactors. Frontiers in Marine Science
Academic article
Gismervik, Ingrid; Vadstein, Olav; Olsen, Yngvar. (2003) Marine mesocosm Zooplankton response to nutrients. Scope Newsletter
Conference abstract
Rehberg-Haas, S.; Meyer, S.; Tielmann, M.; Lippemeier, S.; Vadstein, Olav; Bakke, Ingrid; Kjørsvik, Elin; Evjemo, Jan Ove; Schulz, C.. (2015) Use of the microalga Pavlova viridis as enrichment product for the feeding of Atlantic cod larvae (Gadus morhua). Aquaculture
Academic article
Rong, Ragnhild Lind; Gagnat, Maren Ranheim; Attramadal, Yngve; Vadstein, Olav. (2022) Microbial water quality of the copepod Acartia tonsa in cultures for use as live feed. Aquaculture
Academic article
Saage, Andrea; Vadstein, Olav; Sommer, Ulrich. (2009) Feeding behaviour of adult Centropages hamatus (Copepoda, Calanoida): Functional response and selective feeding experiments. Journal of Sea Research
Academic article
Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.; Vadstein, Olav; Bakke, Ingrid. (2018) Rearing water treatment induces microbial selection influencing the microbiota and pathogen associated transcripts of Cod (Gadus morhua) Larvae. Frontiers in Microbiology
Academic article
Vadstein, Olav. (2020) Dårlig svar om korrelasjon. Klassekampen
Commentary
Chauton, Matilde Skogen; Vadstein, Olav; Eggen, Marit; Tranell, Gabriella. (2012) Alger kan gi geniale solceller. Vitenskap-og-teknologi - NRK
Popular science article
Dooms, Stefania; Papakostas, Spiros; Hoffman, Stefan; Delbare, Daan; Dierckens, Kristof; Triantafyllidis, Alexander; Wolf, Tania De; Vadstein, Olav; Abatzopoulos, Theodore J.; Sorgeloos, Patrick. (2007) Denaturing gradient gel electrophoresis (DGGE) as a tool for the characterisation of Brachionus sp. strains. Aquaculture
Academic article
Bakke, Ingrid; Schryver, Peter De; Boon, Nico; Vadstein, Olav. (2011) PCR-based community structure studies of Bacteria associated with eukaryotic organisms: A simple PCR strategy to avoid co-amplification of eukaryotic DNA. Journal of Microbiological Methods
Academic article
Attramadal, Kari; Bakke, Ingrid; Vadstein, Olav. (2018) Mikrobiell kontroll i lukkede og landbaserte anlegg. Norsk Fiskeoppdrett
Popular science article
Vadstein, Olav. (2020) Samvariasjon gir ingen årsakssammenheng. Klassekampen
Commentary
Vadstein, Olav; Bergh, Øivind; Gatesoupe, Francois-Joel; Galindo-Villegas, Jorge; Mulero, Victoriano; Picchietti, Simona; Scapigliati, Giuseppe; Makridis, Pavlos; Olsen, Yngvar; Dierckens, Kristof. (2013) Microbiology and immunology of fish larvae. Reviews in Aquaculture
Academic literature review
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
Vadstein, Olav; Olsen, Lasse Mork; Andersen, Tom. (2012) Prey-predator dynamics in rotifers: density-dependent consequences of spatial heterogeneity due to surface attachment. Ecology
Academic article
Hess-Erga, Ole-Kristian; Attramadal, Kari; Vadstein, Olav. (2008) Biotic and abiotic particles protect marine heterotrophic bacteria during UV and ozone disinfection. Aquatic Biology
Academic article
Olsen, Lasse Mork; Ardelan, Murat Van; Hewes, Christopher D.; Holm-Hansen, Osmund; Reiss, Christian; Bizsel, Nihayet; Sakshaug, Egil; Vadstein, Olav. (2013) Microbial biogeography during austral summer 2007 in the surface waters around the South Shetland Islands, Antarctica. Aquatic Microbial Ecology
Academic article
Ringo, E.; Vadstein, Olav. (1998) Colonization of Vibro pelagius and Aeromonas caviae in early developing turbot (Scophthalmus maximus L.) larvae. Journal of Applied Microbiology
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
Gismervik, Ingrid; Andersen, Tom; Vadstein, Olav. (1996) Pelagic Food Webs and Eutrophication of Coastal Waters: Impact of Grazers on Algal Communities. Marine Pollution Bulletin
Academic article
Vadstein, Olav. (1996) The use of immunostimulation in marine larviculture: possibilities and challenges. Aquaculture
Academic article
Forberg, Torunn; Vestrum, Ragnhild Inderberg; Arukwe, Augustine; Vadstein, Olav. (2012) Bacterial composition and activity determines host gene-expression responses in gnotobiotic Atlantic cod (Gadus morhua) larvae. Veterinary Microbiology
Academic article
Tsagaraki, Tatiana Margo; Pree, Bernadette; Leiknes, Øystein; Larsen, Aud; Bratbak, Gunnar; Øvreås, Lise; Egge, Jorun Karin; Spanek, Roman; Paulsen, Maria Lund; Olsen, Yngvar. (2018) Bacterial community composition responds to changes in copepod abundance and alters ecosystem function in an Arctic mesocosm study. The ISME Journal
Academic article
Bandara, Kasun Anuruddha; Benini, Elisa; Politis, Sebastian N.; Conceição, Luis E.C.; Santos, André; Sørensen, Sune Riis; Tomkiewicz, Jonna; Vadstein, Olav. (2023) Exploring bacterial community composition and immune gene expression of European eel larvae (Anguilla anguilla) in relation to first-feeding diets. PLOS ONE
Academic article
Trinh, Thi Truc Ly; Bakke, Ingrid; Vadstein, Olav. (2017) Correlations of age and growth rate with microbiota composition in Atlantic cod (Gadus morhua) larvae. Scientific Reports
Academic article
Salvesen, I.; Øie, G.; Vadstein, Olav. (1997) Surface disinfection of Atlantic halibut and turbot eggs with glutaraldehyde: evaluation of concentrations and contact times. Aquaculture International
Academic article
Salvesen, I.; Øie, G.; Vadstein, Olav. (1997) Surface disinfection of Atlantic halibut and turbot eggs with glutaraldehyde: evaluation of concentrations and contact times. Aquaculture International
Academic article
Kostopoulou, Venetia; Vadstein, Olav. (2007) Growth performance of the rotifers Brachionus plicatilis, B. ‘Nevada’ and B. ‘Cayman’ under different food concentrations. Aquaculture
Academic article
Vadstein, Olav. (1998) Evalution of competitive ability of two heterotrophic planktonic bacteria under phosphorus limitation. Aquatic Microbial Ecology
Academic article
Brembu, Tore; Chauton, Matilde Skogen; Winge, Per; Bones, Atle M.; Vadstein, Olav. (2017) Dynamic responses to silicon in Thalasiossira pseudonana - Identification, characterisation and classification of signature genes and their corresponding protein motifs. Scientific Reports
Academic article
Attramadal, Kari; Buran, Astrid; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2010) Recirculation: Microbial Control Strategy For Intensive Marine Larviculture. Global Aquaculture Advocate
Professional article
Copetti, Fabrini; Gregoracci, Gustavo Bueno; Vadstein, Olav; Schveitzer, Rodrigo. (2021) Management of biofloc concentrations as an ecological strategy for microbial control in intensive shrimp culture. Aquaculture
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
Chauton, Matilde Skogen; Vadstein, Olav; Reitan, Kjell Inge. (2014) Nye marine ressurser: Kan vi bruke mikroalger i fiskefor?. Norsk Fiskeoppdrett
Professional article
Heggeset, Tonje Marita Bjerkan; Ertesvåg, Helga; Liu, Bin; Ellingsen, Trond Erling; Vadstein, Olav; Aasen, Inga Marie. (2019) Lipid and DHA-production in Aurantiochytrium sp. – Responses to nitrogen starvation and oxygen limitation revealed by analyses of production kinetics and global transcriptomes. Scientific Reports
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
Olsen, Yngvar; Vadstein, Olav; Sunde, Magne; Storøy, Jostein. (2000) Maten vår kommer fra havet. Norsk Fiskeoppdrett
Popular science article
Hess-Erga, Ole-Kristian; Moreno-Andrés, Javier; Enger, Øivind; Vadstein, Olav. (2019) Microorganisms in ballast water: Disinfection, community dynamics, and implications for management. Science of the Total Environment
Academic literature review
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
Bakke, Ingrid; Coward, Eivind; Andersen, Tom; Vadstein, Olav. (2015) Selection in the host structures the microbiota associated with developing cod larvae (Gadus morhua). Environmental Microbiology
Academic article
Vadstein, Olav. (2023) Antibiotika og myter. Aftenposten (morgenutg. : trykt utg.)
Commentary
Vadstein, Olav. (2023) Antibiotikabruk i Norge: Bør vi primært skryte?. Aftenposten (morgenutg. : trykt utg.)
Commentary
Nymark, Marianne; Volpe, Charlotte; Hafskjold, Marthe Caroline Grønbech; Kirst, Henning; Serif, Manuel; Vadstein, Olav; Bones, Atle M.; Melis, Anastasios; Winge, Per. (2019) Loss of ALBINO3b insertase results in truncated light-harvesting antenna in diatoms. Plant Physiology
Academic article
Vadstein, Olav; Attramadal, Kari; Bakke, Ingrid; Forberg, Torunn; Olsen, Yngvar; Verdegem, Marc; Giatsis, Cristos; Skjermo, Jorunn; Aasen, Inga Marie; Gatesoupe, François-Joel. (2018) Managing the microbial community of marine fish larvae: a holistic perspective for larviculture. Frontiers in Microbiology
Academic literature review
Sanchez, Nicolas; Brown, Eunice Nana Adjoa; Olsen, Yngvar; Vadstein, Olav; Iriarte, Jose Luis; Gonzalez, Humberto E.; Ardelan, Murat Van. (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
Stibor, Herwig; Gelzleichter, Anna; Hantzsche, Florian; Sommer, Ulrich; Striebel, Maren; Vadstein, Olav; Olsen, Yngvar. (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
Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2016) Nitrification at different salinities: Biofilm community composition and physiological plasticity. Water Research
Academic article
Reitan, Kjell Inge; Natvik, C.M.; Vadstein, Olav. (1998) Drinking rate, uptake of bacteria and micro-algae in turbot larvae. Journal of Fish Biology
Academic article
Hoel, Sunniva; Vadstein, Olav; Jakobsen, Anita Nordeng. (2019) The Significance of Mesophilic Aeromonas spp. in Minimally Processed Ready-to-Eat Seafood. Microorganisms
Academic literature review
Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bones, Atle M.; Vadstein, Olav; Kjørsvik, Elin; Olsen, Yngvar. (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
Jin, Yang; Olsen, Rolf Erik; Østensen, Mari-Ann; Gillard, Gareth Benjamin; Li, Keshuai; Harvey, Thomas Nelson; Santi, Nina; Vadstein, Olav; Vik, Jon Olav; Sandve, Simen Rød. (2018) Transcriptional regulation of lipid metabolism when salmon fry switches from endogenous to exogenous feeding. Aquaculture
Academic article
Attramadal, Kari; Minniti, Giusi; Øie, Gunvor; Kjørsvik, Elin; Østensen, Mari-Ann; Bakke, Ingrid; Vadstein, Olav. (2016) Microbial maturation of intake water at different carrying capacities affects microbial control in rearing tanks for marine fish larvae. Aquaculture
Academic article
Romann, Julien Clement; Chauton, Mathilde Skogen; Hanetho, Sidsel Meli; Vebner, Marius Juelsrud; Heldal, Mikal; Thaulow, Christian; Vadstein, Olav; Tranell, Gabriella; Einarsrud, Mari-Ann. (2016) Diatom frustules as a biomaterial: effects of chemical treatment on organic material removal and mechanical properties in cleaned frustules from two Coscinodiscus species. Journal of porous materials
Academic article
Vadstein, Olav. (2024) Bruk av antibiotika i Norge må dramatisk ned, men lite skjer. Klassekampen
Commentary
Fiedler, Alexander Willi; Gundersen, Madeleine S.; Vo, Toan Phuc; Almaas, Eivind; Vadstein, Olav; Bakke, Ingrid. (2023) Phage therapy minimally affects the water microbiota in an Atlantic salmon (Salmo salar) rearing system while still preventing infection. Scientific Reports
Academic article
Vadstein, Olav. (2024) Gonoré og antibiotika. Klassekampen
Commentary
Liu, Bin; Ertesvåg, Helga; Aasen, Inga Marie; Vadstein, Olav; Brautaset, Trygve; Heggeset, Tonje Marita Bjerkan. (2016) Draft genome sequence of the docosahexaenoic acid producing thraustochytrid Aurantiochytrium sp. T66. Genomics Data
Academic article
Røkke, Gunvor Bjerkelund; Melø, Thor Bernt; Mühlroth, Alice; Vadstein, Olav; Bones, Atle M.; Hohmann-Marriott, Martin Frank. (2019) Unique photosynthetic electron transport tuning and excitation distribution in heterokont algae. PLOS ONE
Academic article
Hoel, Sunniva; Jakobsen, Anita Nordeng; Vadstein, Olav. (2017) Effects of storage temperature on bacterial growth rates and community structure in fresh retail sushi. Journal of Applied Microbiology
Academic article
Aasen, Inga Marie; Ertesvåg, Helga; Heggeset, Tonje Marita Bjerkan; Liu, Bin; Brautaset, Trygve; Vadstein, Olav; Ellingsen, Trond Erling. (2016) Thraustochytrids as production organisms for docosahexaenoic acid (DHA), squalene, and carotenoids. Applied Microbiology and Biotechnology
Academic literature review
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
Fjellheim, Anders; Playfoot, Karina Jane; Skjermo, Jorunn; Vadstein, Olav. (2012) Inter-individual variation in the dominant intestinal microbiota of reared Atlantic cod (Gadus morhua L.) larvae. Aquaculture Research
Academic article
Rojas-Tirado, Paula; Pedersen, Per Bovbjerg; Vadstein, Olav; Pedersen, Lars-Flemming. (2019) Microbial dynamics in RAS water: Effects of adding acetate as a biodegradable carbon-source. Aquacultural Engineering
Academic article
Skjermo, Jorunn; Bakke, Ingrid; Dahle, Stine Veronica Wiborg; Vadstein, Olav. (2015) Probiotic strains introduced through live feed and rearingwater have low colonizing success in developing Atlantic cod larvae. Aquaculture
Academic article
Mühlroth, Alice; Li, Keshuai; Røkke, Gunvor; Winge, Per; Olsen, Yngvar; Hohmann-Marriott, Martin Frank; Vadstein, Olav; Bones, Atle M.. (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
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
Bakke, Ingrid; Gomez de la Torre Canny, Sol; Nordgård, Catherine Taylor; Vadstein, Olav; Dunker, Karen; Sletmoen, Marit. (2020) Bakterier på lakseskinn – har de noen funksjon?. Norsk Fiskeoppdrett
Popular science article
Bakke, Ingrid; Gomez de la Torre Canny, Sol; Nordgård, Catherine Taylor; Vadstein, Olav; Dunker, Karen; Sletmoen, Marit. (2020) Bakterier på lakseskinn – har de noen funksjon?. Kyst.no
Popular science article
Bakke, Ingrid; Skjermo, Jorunn; Vo, Tu Anh; Vadstein, Olav. (2013) Live feed is not a major determinant of the microbiota associated with cod larvae (Gadus morhua). Environmental Microbiology Reports
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
Thingstad, Tron Frede; Øvreås, Lise; Vadstein, Olav. (2022) Mechanisms Generating Dichotomies in the Life Strategies of Heterotrophic Marine Prokaryotes. Diversity
Academic literature review
Bakke, Ingrid; Åm, Ann Louise; Kolarevic, Jelena; Ytrestøyl, Trine; Vadstein, Olav; Attramadal, Kari Johanne Kihle; Terjesen, Bendik Fyhn. (2016) Microbial community dynamics in semi-commercial RAS for production of Atlantic salmon post-smolts at different salinities. Aquacultural Engineering
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 science article
Skjermo, Jorunn; Vadstein, Olav. (1999) Techniques for microbial control in the intensive rearing of marine larvae. Aquaculture
Academic article
Salvesen, Ingrid; Skjermo, Jorunn; Vadstein, Olav. (1999) Growth of turbot (Scophthalmus maximus L.) during first feeding in relation to the proportion of r/K-strategists in the bacterial community of the rearing water. Aquaculture
Academic article
Volpe, Charlotte; Vadstein, Olav; Andersen, Geir; Andersen, Tom. (2021) Nanocosm: A well plate photobioreactor for environmental and biotechnological studies. Lab on a Chip
Academic article
Gatesoupe, Francois-Joel; Covès, Denis; Ortega, Aurelio; Papandroulakis, Nikos; Vadstein, Olav; Gándara, Fernando de la. (2013) A spatiotemporal study of bacterial community profiles associated with Atlantic bluefin tuna larvae, Thunnus thynnus L., in three Mediterranean hatcheries. Aquaculture 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
Gundersen, Madeleine S.; Vadstein, Olav. (2024) An exploration of the impact of phylogenetic tree structure on NTI and βNTI estimates of community assembly. Scientific Reports
Academic article
Navada, Sharada; Vadstein, Olav; Gaumet, Frederic; Tveten, Ann-Kristin; Spanu, Claudia; Mikkelsen, Øyvind; Kolarevic, Jelena. (2020) Biofilms remember: Osmotic stress priming as a microbial management strategy for improving salinity acclimation in nitrifying biofilms. Water Research
Academic article
Hess-Erga, Ole-Kristian; Blomvågnes-Bakke, Bente; Vadstein, Olav. (2010) Recolonization by heterotrophic bacteria after UV irradiation or ozonation of seawater; a simulation of ballast water treatment. Water Research
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
Jin, Yang; Olsen, Rolf Erik; Harvey, Thomas Nelson; Østensen, Mari-Ann; Li, Keshuai; Santi, Nina; Vadstein, Olav; Bones, Atle M.; Vik, Jon Olav; Sandve, Simen Rød. (2020) Comparative transcriptomics reveals domestication‐associated features of Atlantic salmon lipid metabolism. Molecular Ecology
Academic article
Olsen, Yngvar; Reinertsen, Helge; Sommer, Ulrich; Vadstein, Olav. (2013) 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
Mathisen, Amalie Johanne Horn; Canny, Sol Gomez de la Torre; Gundersen, Madeleine S.; Østensen, Mari-Ann; Olsen, Yngvar; Vadstein, Olav; Bakke, Ingrid. (2025) Community assembly of gut microbiomes in yolk sac fry of Atlantic salmon: host genetics, environmental microbiomes, and ecological processes. FEMS Microbiology Ecology
Academic article
Jalili, Mahsa; Jin, Yang; Bones, Atle M.; Olsen, Yngvar; Vadstein, Olav; Østensen, Mari-Ann; Buonocore, Francesco; Gerdol, Marco; Pallavicini, Alberto; Scapigliati, Giuseppe. (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
Navarro-Guillén, Carmen; Lorentsen, Eirik Degré; Perera, Erick; Yúfera, Manuel; Vadstein, Olav. (2023) Feeding and water temperature modulate the potential activity of gut microbiota in greater amberjack juveniles (Seriola dumerili). Frontiers in Marine Science
Academic article
Mühlroth, Alice; Winge, Per; El Assimi, Aimen; Jouhet, Juliette; Maréchal, Eric; Hohmann-Marriott, Martin Frank; Vadstein, Olav; Bones, Atle M.. (2017) Mechanisms of phosphorus acquisition and lipid class remodeling under P limitation in a Marine Microalga. Plant Physiology
Academic article
Fiedler, Alexander Willi; Drågen, Martha Kristine Rindarøy; Lorentsen, Eirik Degré; Vadstein, Olav; Bakke, Ingrid. (2023) The stability and composition of the gut and skin microbiota of Atlantic salmon throughout the yolk sac stage. Frontiers in Microbiology
Academic article
Blancheton, Jean-Paul; Attramadal, Kari; Michaud, L.; d’Orbcastele, E. Roque; Vadstein, Olav. (2013) Insight into bacterial population in aquaculture systems and its implication. Aquacultural Engineering
Academic literature review
Vestrum, Ragnhild Inderberg; Attramadal, Kari; Vadstein, Olav; Gundersen, Madeleine Stenshorne; Bakke, Ingrid. (2020) Bacterial community assembly in Atlantic cod larvae (Gadus morhua): Contributions of ecological processes and metacommunity structure. FEMS Microbiology Ecology
Academic article
Vadstein, Olav. (2023) Dør vi uten oljen?. Klassekampen
Commentary
Olsen, Yngvar; Agusti, Susana; Andersen, T.; Duarte, Carlos; Gasol, J. M.; Gismervik, Ingrid; Heiskanen, Anna-Stiina.; Hoell, E.; Kuuppo, Pirjo.; Lignell, Risto. (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
Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2021) Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater. Scientific Reports
Academic article
Chauton, Matilde Skogen; Skolem, Lotte Maria Beate; Olsen, Lasse Mork; Vullum, Per Erik; Walmsley, John; Vadstein, Olav. (2015) Titanium uptake and incorporation into silica nanostructures by the diatom Pinnularia sp. (Bacillariophyceae). Journal of Applied Phycology
Academic article
Fjellheim, Anders; Skjermo, Jorunn; Vadstein, Olav. (2008) Evaluation of probiotic bacteria for Atlantic cod (Gadhus morhua L.) larvae. World Aquaculture
Academic article
Rojas-Tirado, Paula; Pedersen, Per Bovbjerg; Vadstein, Olav; Pedersen, Lars-Flemming. (2018) Changes in microbial water quality in RAS following altered feed loading. Aquacultural Engineering
Academic article
Hoel, Sunniva; Mehli, Lisbeth; Bruheim, Torkjel; Vadstein, Olav; Jakobsen, Anita Nordeng. (2015) Assessment of Microbiological Quality of Retail Fresh Sushi from Selected Sources in Norway. Journal of Food Protection
Academic article
Vadstein, Olav. (2023) Ja, virkeligheten er plagsom. Klassekampen
Commentary
Schryver, Peter De; Vadstein, Olav. (2014) Ecological theory as a foundation to control pathogenic invasion in aquaculture. The ISME Journal
Academic article
Wang, Xinxin; Fosse, Hilde Karoline; Li, Keshuai; Chauton, Matilde Skogen; Vadstein, Olav; Reitan, Kjell Inge. (2019) Influence of nitrogen limitation on lipid accumulation and EPA and DHA content in four marine microalgae for possible use in aquafeed. Frontiers in Marine Science
Academic article
Chauton, Matilde Skogen; Winge, Per; Brembu, Tore; Vadstein, Olav; Bones, Atle M.. (2013) Gene regulation of carbon fixation, storage, and utilization in the diatom phaeodactylum tricornutum acclimated to light/dark cycles. Plant Physiology
Academic article
Chauton, Matilde Skogen; Vadstein, Olav; Eggen, Marit; Tranell, Gabriella. (2012) Alger kan gi geniale solceller. Forskning.no
Popular science article

Books

Vadstein, Olav; Mo, T.A.; Bergh, Ø.. (2004) Microbial interactions, prophylaxis and diseases. Blackwell Publishing
Non-fiction monograph
Fjellheim, Anders; Playfoot, Karina; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2005) Characterization of the dominant and the antagonistic bacterial flora of cod (Gadus morhua L.) larvae reared under different conditions. European Aquaculture Society
Anthology
Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2005) Assimilative carrying capacity: Contribution and impact on the pelagic system. European Aquaculture Society
Anthology

Part of book/report

DeSchryver, Peter; Vadstein, Olav; Defoirdt, Tom; Sorgeloos, Patrick. (2022) Microbial management: a key concept for sustainable shrimp culture.
Academic chapter
Bakke, Ingrid; Attramadal, Kari; Vestrum, Ragnhild Inderberg; Vadstein, Olav. (2019) Controlling Factors for Community Assembly in Developing Cod Larvae (Gadus morhua).
Non-fiction chapter
Vadstein, Olav; Mo, Tor Atle; Bergh, Øivind. (2004) Microbial interactions, prophylaxis and diseases.
Academic chapter
Olsen, Yngvar; Tokle, Nils Egil; Vadstein, Olav. (2012) Hvordan forvalte vannmassene? Om samspillet mellom næringssalt-utslipp og det planktoniske økosystemet.
Academic chapter
Vestrum, Ragnhild Inderberg; Forberg, Torunn; Vadstein, Olav. (2009) Impact of live versus dead bacteria on survival, growth, and gene expression in Atlantic cod (Gadus morhua) larvae.
Academic chapter
Forberg, Torunn; Vadstein, Olav; Arukwe, Augustine. (2009) Strategies to unravel gene expression responses of host-microbe interactions in cod (Gadus morhua) larvae.
Academic chapter
Attramadal, Kari; Minniti, Giusi; Øie, Gunvor; Kjørsvik, Elin; Østensen, Mari-Ann; Bakke, Ingrid; Vadstein, Olav. (2014) Microbial control of the rearing water of larvae.
Non-fiction chapter
Vadstein, Olav. (2009) Interactions in the planktonic food web.
Academic chapter
Vestrum, Ragnhild Inderberg; Luef, Birgit; Forberg, Torunn; Bakke, Ingrid; Vadstein, Olav. (2018) Investigating fish larvae-microbe interactions in the 21st century: Old questions studied with new tools.
Non-fiction chapter

Report

Rokstad, Anne Mari Aukan; Skjermo, Jorunn; Skjåk-Bræk, Gudmund; Vadstein, Olav. (2000) Makrofagstudier hos piggvar og kveite etter immunstimulering med FMI in vitro og in vivo. SINTEF fiskeri og havbruk
Research report

Student thesis or dissertation

Fernando, Fernando; Bakke, Ingrid; Vadstein, Olav. (2026) The Roles of Biofilters in Shaping Microbial Ecology and Water Quality in Recirculating Aquaculture Systems for Atlantic Salmon (Salmo salar). Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Vadstein, Olav; Rong, Ragnhild Lind. (2020) Microbial Quality of the copepod Acartia tonsa for use as live feed for marine larvae. NTNU
Master thesis
Mathivannan, Causia; Brembu, Tore; Vadstein, Olav. (2022) Functional studies of Group II silicanins in the diatom Thalassiosira pseudonana cell wall biomineralization. Norges teknisk-naturvitenskapelige universitet
Master thesis
Brembu, Tore; Vadstein, Olav; Sværen, Thea. (2022) Creation of Gene Knockouts for Silicic Acid Transporter-Associated Kinases and Study of Alternative Selection Markers in the Diatom Thalassiosira pseudonana. NTNU, Institutt for bioteknologi og matvitenskap
Master thesis
Palandre, Hugues; Brembu, Tore; Vadstein, Olav. (2021) Development of Molecular Tools in the Diatom Coscinodiscus wailesii. Norges teknisk-naturvitenskapelige universitet
Master thesis
Playfoot, Karina Jane; Vadstein, Olav. (2006) Isolation and characterisation of bacteria from the gut of cod larvae (Gadus morhua L.) for consideration of probiotic effects. NTNU, Institutt for biologi
Master thesis
Næss, Camilla; Vadstein, Olav. (2007) Food selectivity and trophic position of mesozooplankton in the Trondheim fjord. NTNU, Institutt for biologi
Master thesis
Skisland, Maren Moen; Vadstein, Olav; Brembu, Tore. (2021) Functional studies of two silicon transporter-associated kinases in the diatom Thalassiosira pseudonana. Norges teknisk-naturvitenskapelige universitet
Master thesis
Harris, Ingrid Eskerud; Vadstein, Olav; Brembu, Tore. (2021) Functional studies of a family of ankyrin repeat-containing proteins in the diatom Thalassiosira pseudonana hypothesized to be involved in frustule morphogenesis. Norges teknisk-naturvitenskapelige universitet
Master thesis
Sjevelås, Christine; Vadstein, Olav; Brembu, Tore. (2021) Morphological changes in the frustule of Thalassiosira pseudonana by genetic manipulation and cultivation conditions. Norges teknisk-naturvitenskapelige universitet
Master thesis
Bentzen, Kristin Leonore Lillebo; Vadstein, Olav; Brembu, Tore. (2021) Functional studies of two genes encoding closely related group II silicanins in the diatom Thalassiosira pseudonana. Norges teknisk-naturvitenskapelige universitet
Master thesis
Obrestad, Kathrine; Vadstein, Olav; Einum, Sigurd. (2020) The effect of gut microbiota on fitness in Daphnia magna. NTNU
Master thesis
Årdal, Vilde; Vadstein, Olav; Brembu, Tore. (2020) Cell Wall Biomineralization in the Centric Diatom Thalassiosira pseudonana: Investigation of the Putative Role of Silicanin Tp23191 and the Impact of Microfilaments and Microtubules. Norges teknisk-naturvitenskapelige universitet
Master thesis
Jafari, Leila; Vadstein, Olav. (2020) The Effects of Protein Skimmer, Hydrogen Peroxide and Salinity on Water Quality in RAS. Norges teknisk-naturvitenskapelige universitet
Master thesis
Gresseth, Marita; Vadstein, Olav; Brembu, Tore. (2020) Investigating fluorescence in transformants expressing a silicanin-mNeonGreen fusion protein, and the effect of cytoskeleton inhibitors on frustule biosynthesis in the diatom Thalassiosira pseudonana. Norges teknisk-naturvitenskapelige universitet
Master thesis

Teaching

I do not teach reagular courses anymore.

Supervision

I do not take up new students.

Outreach

2025

Conference lecture

Vadstein, Olav; Bohannan, Brendan J. M.; Bossier, Peter. (2025) Some thoughts on microbial management in aquaculture: status and prospects for larval rearing. 5th International Fish Microbiota workshop
Feature article

Vadstein, Olav. (2025) Hva skjer hvis mikrobene forsvinner? - adressa.no.
Feature article

Vadstein, Olav. (2025) Den oversette biologien.

2024

Conference poster

Fernando, Fernando; Hofstad, Kristine; Khadka, Sujan; Vadstein, Olav; Bakke, Ingrid. (2024) Mature Biofilters Safeguard Recirculating Aquaculture System (RAS) Against the Invasion by Opportunistic Bacteria. Fish & Shellfish Larviculture Symposium (LARVI)
Conference lecture

Khadka, Sujan; Fernando, Fernando; Aasen, Anna; Vadstein, Olav; Bakke, Ingrid. (2024) Biofilter-biofilm communities: a key driver for structuring fish and rearing water microbiota in recirculating aquaculture systems. larvi 2024 (8th Fish & Shellfish Larviculture Symposium)
Feature article

Vadstein, Olav; Bakken, Lars. (2024) Den glemte klimaaktøren.
Conference lecture

Khadka, Sujan; Fernando, Fernando; Aasen, Anna; Vadstein, Olav; Bakke, Ingrid. (2024) The role of the biofilter in structuring the water and fish microbiomes in recirculating aquaculture systems. AQUA 2024

2023

Feature article

Vadstein, Olav. (2023) Antibiotikabruk og villfarelser.
Conference lecture

Bakke, Ingrid; Vestrum, Ragnhild Inderberg; Bugten, Anette Voll; Mathisen, Amalie johanne Horn; Vadstein, Olav. (2023) r-selection of the rearing water microbiota increases the similarity to the fish microbiota in aquaculture systems. The 4th International Fish Microbiota workshop
Conference lecture

Fiedler, Alexander Willi; Gundersen, Madeleine S.; Vo, Toan; Almaas, Eivind; Vadstein, Olav; Bakke, Ingrid. (2023) Phage therapy has little influence on the water microbiota while still preventing infection in Atlantic salmon. 4th International Fish microbiota Workshop
Conference poster

Gundersen, Madeleine S.; Fiedler, Alexander Willi; Bakke, Ingrid; Vadstein, Olav. (2023) Antibiotics caused major disturbances to a drinking water microbiome, while phage treatment had negligible effect. 10th IWA Microbial Ecology and Water Engineering Specialist Conference

2022

Conference poster

Gundersen, Madeleine S.; Morelan, Ian; Bakke, Ingrid; Andersen, Tom; Vadstein, Olav. (2022) Disturbances increase selection – whereas stability promotes stochastic assembly in bacterial communities. ISME18
Conference poster

Fiedler, Alexander Willi; Gomez de la Torre Canny, Sol; Drågen, Martha Kristine Rindarøy; Lorentsen, Eirik Degre; Bakke, Ingrid; Vadstein, Olav. (2022) The early gut and skin microbiota of Atlantic salmon yolk sac fry originating from two different source communities. ISME18 Konferanse
Conference lecture

Bugten, Anette Voll; Attramadal, Kari Johanne Kihle; Fossmark, Ragnhild Olsen; Rosten, Trond Waldemar; Vadstein, Olav; Bakke, Ingrid. (2022) The relationship between fish and water microbiota in RAS: influence of organic loading. 2022 International Conference on international Cooperation and Integration of Industry, Education, Research and Application for Future Ocean (Qingdao)
Conference lecture

Gundersen, Madeleine S.; Morelan, Ian; Andersen, Tom; Bakke, Ingrid; Vadstein, Olav. (2022) Bacterial community assembly during disturbances. NBS Contact Meeting 2022
Conference lecture

Bugten, Anette Voll; Attramadal, Kari Johanne Kihle; Fossmark, Ragnhild Olsen; Rosten, Trond Waldemar; Vadstein, Olav; Bakke, Ingrid. (2022) The relationship between rearing water and fish microbiomes in RAS for smolt production: Impact of membrane filtration and organic loading. Aquaculture Europe
Conference lecture

Huang, Zhitao; Risnes, Lea; Silva, Blanca Gonzalez; Østerhus, Stein Wold; Vadstein, Olav; Bakke, Ingrid. (2022) The potential application of a partial nitrification-anammox (PNA) biofilm-based process for nitrogen removal in RAS. Aquaculture Europe
Conference lecture

Risnes, Lea; Huang, Zhitao; Silva, Blanca Gonzalez; Østerhus, Stein Wold; Vadstein, Olav; Bakke, Ingrid. (2022) Nitrogenfjerning: Adaptasjon av delvis nitrifisering og anaerob ammonium oksidasjon til RAS-konsentrasjoner. Tekset
Lecture

Gundersen, Madeleine S.; Vadstein, Olav; Schryver, Peter De; Attramadal, Kari. (2022) Legacy effects do not establish in Cod larvea or its rearing water. IPAMA seminar 2022

2021

Interview

Gonzalez, Ruby; Attramadal, Kari; Vadstein, Olav. (2021) Study says “no” to disinfection in European lobster larvae RAS.
Conference lecture

Nymark, Marianne; Volpe, Charlotte; Hafskjold, Marthe C.G.; Serif, Manuel; Vadstein, Olav; Bones, Atle M.; Winge, Per. (2021) CRISPR/Cas9 as a tool for strain improvement in diatoms. Gene editing tools for sustainable bio-production
Conference lecture

Fiedler, Alexander Willi; Canny, Sol Gomez de la Torre; Drågen, Martha Kristine Rindarøy; Lorentsen, Eirik Degre; Vadstein, Olav; Bakke, Ingrid. (2021) The initial microbiome of Atlantic salmon (Salmo salar) yolk sac fry. The third international fish - microbiota workshop
Conference lecture

Vadstein, Olav; Fossmark, Raghnhild Olsen; Attramadal, Kari. (2021) Future microbial methods for controlling water quality in RAS. Aquanor
Conference lecture

Bakke, Ingrid; Coward, Eivind; Lorentsen, Eirik Degre; Vadstein, Olav. (2021) Temporal and interindividual variation in hindgut microbiomes among four codfish species in the subfamily Gadinae. The third international fish - microbiota workshop

2020

Conference lecture

Navada, Sharada; Gaumet, Frederic; Tveten, Ann-Kristin; Kolarevic, Jelena; Vadstein, Olav. (2020) Seeding as a salinity acclimation strategy in nitrifying bioreactors. Smolt Conference of the Future
Conference poster

Gundersen, Madeleine Stenshorne; Morelan, Ian; Andersen, Tom; Bakke, Ingrid; Vadstein, Olav. (2020) The effect of periodical disturbances on selection and drift in bacterial communities. Microbiota and Health
Conference poster

Pettersen, Jakob Peder; Vadstein, Olav; Almaas, Eivind. (2020) What do co-occurence network actually tell us? A case study. NetSci 2020

2019

Conference poster

Dunker, Karen; Canny, Sol Gomez de la Torre; Nordgård, Catherine Taylor; Bakke, Ingrid; Vadstein, Olav; Sletmoen, Marit. (2019) Glycan-based molecular interactions and their role in bacterial surface adhesion. International symposium on glycoconjugates
Conference lecture

Nymark, Marianne; Sharma, Amit Kumar; Volpe, Charlotte; Flo, Snorre; Hafskjold, Marthe C.G.; Kirst, Henning; Vadstein, Olav; Melis, Anastasios; Winge, Per; Bones, Atle M.. (2019) A systems analysis of the light harvesting complex in diatoms. 14th Nordic Photosynthesis Conference
Conference poster

Messemer, Annika; Hafskjold, Marthe Caroline Grønbech; Winge, Per; Vadstein, Olav; Brembu, Tore. (2019) Functional studies of a diatom-specific cell wall synthesis protein. 7th European Phycological Congress
Conference lecture

Fossmark, Ragnhild Olsen; Attramadal, Kari; Rosten, Trond Waldemar; Koseto, Deni; Nesje, Jenny; Bakke, Ingrid; Jørgensen, Niels O.G.; Raspati, Gema Sakti; Østerhus, Stein Wold; Vadstein, Olav. (2019) Microbial community dynamics in recirculating aquaculture systems rearing Atlantic salmon parr (Salmo salar) with reduced organic loading through membrane filtration. Aquaculture Europe
Conference lecture

Fossmark, Ragnhild Olsen; Vadstein, Olav; Nordøy, Kristian; Attramadal, Kari. (2019) Salinity as a driver for microbial community succession in the gut of Atlantic salmon (Salmo salar). 2nd International fish microbiota workshop
Conference lecture

Fossmark, Ragnhild Olsen; Nordøy, Kristian; Dahle, Stine Veronica Wiborg; Vadstein, Olav; Østerhus, Stein Wold; Attramadal, Kari. (2019) Increase in salinity as a driver for microbial community succession in RAS for Atlantic salmon (Salmo salar) smolt production. NordicRAS
Conference lecture

Navada, Sharada; Gaumet, Frederic; Vadstein, Olav; Spanu, Claudia; Mikkelsen, Øyvind; Kolarevic, Jelena. (2019) Improving salinity adaptation in nitrifying bioreactors by seawater priming. AE2019
Conference lecture

Navada, Sharada; Sebastianpillai, Marianna; Gaumet, Frederic; Vadstein, Olav; Fossmark, Ragnhild Olsen; Mikkelsen, Øyvind; Kolarevic, Jelena. (2019) Salinity change strategies for biofilters in RAS for Atlantic salmon (Salmo salar). NordicRAS
Conference 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
Conference poster

Navada, Sharada; Vadstein, Olav; Gaumet, Frederic; Tveten, Ann-Kristin; Spanu, Claudia; Mikkelsen, Øyvind; Kolarevic, Jelena. (2019) Improving salinity adaptation of nitrifying biofilms with seawater priming. 8th IWA Microbial Ecology & Water Engineering Specialist Conference (MEWE)
Conference lecture

Navada, Sharada; Vadstein, Olav; Tveten, Ann-Kristin; Terjesen, Bendik Fyhn; Mota, Vasco C.; Gaumet, Frederic; Mikkelsen, Øyvind; Kamstra, Andries. (2019) Influence of rate of salinity increase on nitrifying biofilms. 8th IWA Microbial Ecology & Water Engineering Specialist Conference (MEWE)
Lecture

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Forberg, Torunn; Winge, Per; Gundersen, Madeleine; Vadstein, Olav; Bakke, Ingrid. (2019) Host-microbiota interactions in Atlantic cod larvae. Lunsjeminar Sintef
Lecture

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Vadstein, Olav; Bakke, Ingrid. (2019) The composition of the microbiota associated with cod larvae (Gadus morhua) is affected by changes in the environmental microbiota. 2nd International Fish Microbiota Workshop
Lecture

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Forberg, Torunn; Winge, Per; Gundersen, Madeleine; Vadstein, Olav; Bakke, Ingrid. (2019) Host-microbiota interactions in Atlantic cod larvae. Lunsjseminar IBT
Conference lecture

Vestrum, Ragnhild Inderberg; Truong, Thi My Hanh; Attramadal, Kari; Bakke, Ingrid; Vadstein, Olav. (2019) The effect of rearing water treatments on the microbiota associated with cod larvae. NBS kontaktmøte 2019
Interview

Paridon, Bradley van; Vadstein, Olav. (2019) Microbes in Ballast Water Show Where a Ship Came From.
Conference lecture

Vadstein, Olav. (2019) How relevant is the core microbiota concept for fish. 2nd International Fish Microbiota workshop
Conference poster

Sebastianpillai, Marianna; Navada, Sharada; Fossmark, Ragnhild Olsen; Vadstein, Olav. (2019) Nitrifying Capacity and Microbial Community Structure during Start-up of Freshwater and Brackish water Moving Bed Biofilm Reactors in Recirculating Aquaculture Systems. NBS Contact Meeting
Conference poster

Brembu, Tore; Messemer, Annika; Hafskjold, Marthe; Winge, Per; Vadstein, Olav. (2019) Analysis of short-term transcriptome responses to silicon addition in Thalassiosira pseudonana. The molecular life of diatoms 2019
Lecture

Vadstein, Olav. (2019) Playing domino with Arctic planktonic food webs - and beaten by Psychromonadaceae. IBT's weekly Department lunch
Conference poster

Volpe, Charlotte; Llansola-Portoles, Manuel J.; Nymark, Marianne; Winge, Per; Robert, Bruno; Büchel, Claudia; Vadstein, Olav. (2019) ANALYSIS OF THE ALB3B KNOCK OUT LINES OF THE DIATOM PHAEODACTHYLUM TRICORNUTUM BASED ON RESONANCE RAMAN SPECTROSCOPY. EPC7

2018

Lecture

Wang, Xinxin; Chauton, Matilde Skogen; Vadstein, Olav; Reitan, Kjell Inge. (2018) Microalgae as a feed source for Aquaculture: effect of cultivation conditions on Lipid and Fatty acid composition. AQUA 2018
Conference lecture

Vadstein, Olav; Ertesvåg, Helga; Aasen, Inga Marie; Nymark, Marianne. (2018) Microbes as production organisms of DHA/EPA: The need for strain improvement. AQUA 2018
Lecture

Vestrum, Ragnhild Inderberg; Truong, Thi My Hanh; Attramadal, Kari; Bakke, Ingrid; Vadstein, Olav. (2018) The effect of rearing water treatments on the microbiota associated with cod larvae. Microbial ecology in applied and natural systems
Conference lecture

Fossmark, Ragnhild Olsen; Attramadal, Kari; Bakke, Ingrid; Vadstein, Olav. (2018) Microbial Ecology in Aquaculture - Effect of organic matter on the microbial community dynamics and stability in land-based recirculating aquaculture systems for Atlantic Salmon parr (Salmo salar). Microbial Ecology in Applied and Natural Systems Workshop
Conference poster

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.; Vadstein, Olav; Bakke, Ingrid. (2018) Rearing water treatment influences the microbiota and transcript profiles of cod larvae. Nordic RAS workshop
Conference lecture

Nymark, Marianne; Volpe, Charlotte; Hafskjold, Marthe; Winge, Per; Sharma, Amit Kumar; Chauton, Matilde Skogen; Vadstein, Olav; Bones, Atle M.. (2018) Genredigering av marine mikroalger - Kan endringer av algenes lyshøstingsegenskaper øke produktiviteten?. HAVBRUK 2018
Conference lecture

Aasen, Inga Marie; Ertesvåg, Helga; Heggeset, Tonje Marita Bjerkan; Vadstein, Olav; Sevgeli, Huseyin. (2018) Production of heterotrophic microorganisms for use as a source of long-chain omega3 fatty acids in aquafeed. Aqua 2018 – World Aquaculture Society Conference
Conference lecture

Aasen, Inga Marie; Ertesvåg, Helga; Heggeset, Tonje Marita Bjerkan; Vadstein, Olav; Broli, Gunn; Sevgeli, Huseyin; Nanton, Dominic. (2018) Heterotrofe mikroorganismer som kilde for omega3-fettsyrer i fiskefôr. Havbruk 2018
Conference lecture

Jalili, Mahsa; Jin, Yang; Olsen, Yngvar; Bones, Atle M.; Østensen, Mari-Ann; Vadstein, Olav; buonocore, Francesco; Scapigliati, Giuseppe; Gerdol, Marco; Pallaviccini, Alberto. (2018) Dietary lipids can modify the immune-related transcriptome in Atlantic salmon: a model organism. 5th European Congress of Immunology
Interview

Ley, Colin; Vadstein, Olav. (2018) RAS research targets ‘friendly’ bacteria.

2017

Conference poster

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.; Vadstein, Olav; Bakke, Ingrid. (2017) Rearing water treatment influences the microbiota and trancript profiles of cod larvae. Larvi 2017
Conference lecture

Vadstein, Olav. (2017) Managing the microbial world of larvae: an ecological approach. larvi 2017
Interview

Vadstein, Olav; Arvola, Benjamin. (2017) Den grønne gugga i fjæra kan ha en naturlig årsak.
Lecture

Wang, Xinxin; Nymark, Marianne; Chauton, Matilde Skogen; Aasen, Inga Marie; Vadstein, Olav; Reitan, Kjell Inge. (2017) Marine microalgae: Resource for protein and EPA/DHA for use in aquafeed. Future feeds and ingredients
Lecture

Wang, Xinxin; Chauton, Matilde Skogen; Reitan, Kjell Inge; Vadstein, Olav; Nymark, Marianne. (2017) Marine microalgae: resource for protein and EPA or DHA use in aquafeed. AquaNor
Conference poster

Brembu, Tore; Chauton, Matilde Skogen; Winge, Per; Bones, Atle M.; Vadstein, Olav. (2017) Dynamic responses to silicon in Thalasiossira pseudonana - Identification, characterisation and classification of signature genes and their corresponding motifs. The IVth International Conference “Molecular Life of Diatoms”
Conference poster

Wang, Xinxin; Chauton, Matilde Skogen; Vadstein, Olav; Reitan, Kjell Inge; Li, Keshuai. (2017) INFLUENCE OF NITROGEN LIMITATION ON LIPID AND FATTY ACID COMPOSITION OF FOUR MARINE MICROALGAE SPECIES. Aquaculture Europe 17
Conference lecture

Hoel, Sunniva; Vadstein, Olav; Jakobsen, Anita Nordeng. (2017) Viability of environmental strains of mesophilic Aeromonas spp. in Atlantic salmon (salmo salar) using an experimental model of nigiri sushi. WEFTA 2017
Conference lecture

Bakke, Ingrid; Attramadal, Kari; Vadstein, Olav. (2017) Influence of environmental factors on the microbiota associated with developing cod larvae (Gadus morhua). 1st International Fish-Microbiota Workshop
Conference lecture

DeSchryver, Peter; Attramadal, Kari; Vadstein, Olav; Sorgeloos, Patrick. (2017) Microbial management in marine fish and crustacean larviculture. larvi 2017
Conference lecture

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.; Vadstein, Olav; Bakke, Ingrid. (2017) Rearing water microbiota influences the microbiota and transcript profiles of cod larvae. NBS Contact Meeting 2017
Conference lecture

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.; Vadstein, Olav; Bakke, Ingrid. (2017) Rearing water microbiota influences the microbiota and transcript profiles of cod larvae. 1st International Fish-Microbiota Workshop

2016

Conference lecture

Rojas-Tirado, Paula A.; Pedersen, Per Bovbjerg; Vadstein, Olav; Pedersen, Lars-Flemming. (2016) Effects of feed loading on microbial water quality in RAS. 11th International Conference on Recirculating Aquaculture
Conference poster

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

Forberg, Torunn; Vestrum, Ragnhild Inderberg; Luef, Birgit; Winge, Per; Østensen, Mari-Ann; Olsen, Yngvar; Bakke, Ingrid; Vadstein, Olav. (2016) Host-microbe interactions in cod larvae. NBS seminar 2016
Conference poster

Vadstein, Olav; Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Østgaard, Kjetill; Bakke, Ingrid. (2016) Effect of salinity and salinity change on microbial community assembly and nitrification activity. International Symposium on Microbial Ecology ISME 16
Conference poster

Bakke, Ingrid; Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Vadstein, Olav; Mironov, Vladimir; Østgaard, Kjetill; Bakke, Rune. (2016) Microbial community dynamics in anaerobic digestion at high ammonia concentrations. International Symposium on Microbial Ecology ISME 16
Conference lecture

Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.; Vadstein, Olav; Bakke, Ingrid. (2016) Rearing water microbiota influences the microbiota and transcript profiles of cod larvae. NBS seminar 2016

2015

Conference lecture

Holan, Astrid Buran; Kolarevic, Jelena; Fossmark, Reidar; Bakke, I.; Vadstein, Olav; Terjesen, Bendik Fyhn. (2015) Evaluation of membrane treatment effect on water quality in recrculating aquaculture systems (RAS) for post-smolts (Salmo salar). In Book of abstracts, p. 23. 3d Workshop on Recirculating Aquaculture Systems
Conference lecture

Bakke, I.; Åm, A.L.; Kolarevic, Jelena; Ytrestøyl, Trine; Vadstein, Olav; Attramadal, Kari; Terjesen, Bendik Fyhn. (2015) Microbial community dynamics in three RAS with different salinities for production of Atlantic postsmolt. In Book of abstracts, p. 32. 3d Workshop on Recirculating Aquaculture Systems
Contribution to radio or TV

Warholm, Ingvill; Vadstein, Olav. (2015) Schrødingers katt: De usynlige hjelperne.
Conference lecture

Hoel, Sunniva; Vadstein, Olav; Jakobsen, Anita Nordeng. (2015) Effect of Storage Temperature on Bacterial Growth Rates and Community Structure in Fresh Retail Sushi. Food Chemistry and Technology 2015
Interview

Bruheim, Per; Vadstein, Olav. (2015) Nå kan du studere ølbrygging på NTNU.
Contribution to radio or TV

Bruheim, Per; Vadstein, Olav. (2015) Utdanning og forskning innen ølbrygging ved NTNU.
Conference lecture

Bakke, Ingrid; Åm, Ann-Louise; Kolarevic, Jelena; Ytrestøyl, Trine; Vadstein, Olav; Terjesen, Bendik Fyhn. (2015) Microbial community dynamics in three RAS with different salinities for production of Atlantic postsmolt. The 3rd NordicRAS workshop on RAS
Conference lecture

Forberg, Torunn; Vadstein, Olav; Winge, Per; Bones, Atle M.; Luef, Birgit; Østensen, Mari-Ann; Bakke, Ingrid; Vestrum, Ragnhild Inderberg; Olsen, Yngvar. (2015) Development of a gnotobiotic system for Atlantic cod (Gadus morhua) larvae to study host-microbe interactions. Gut Microbiota Modulation of Host Physiology: The Search for mechanism
Lecture

Vadstein, Olav. (2015) The ecologist role in developing tools for management: both sides of the problem. 1st Annual Hjort Open Science Seminar
Conference 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
Conference poster

Mühlroth, Alice; Bones, Atle M.; Vadstein, Olav; Hohmann-Marriott, Martin; El-Assimi, Aimen; Røkke, Gunvor; Bruheim, Per; Winge, Per; Despres, Julie. (2015) Investigation of transcriptional regulation in microalgae Nannochloropsis oceanica CCMP1779 under induced TAG accumulation by phosphate deficiency. EPC6 european phylogeny congress 6
Lecture

Holan, Astrid Buran; Kolarevic, Jelena; Terjesen, Bendik Fyhn; Fossmark, Ragnhild Olsen; Bakke, Ingrid; Vadstein, Olav. (2015) Evaluation of membrane treatment effect on water quality in RAS for Atlantic salmon post-smolts. NordicRAS
Lecture

Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2015) Nitrification at different salinities: biofilm community composition and physiological plasticity. IWA Nutrient Removal and Recovery 2015: Moving innovation into practice
Lecture

Gonzalez Silva, Blanca Magdalena; Rønning, Are Johan; Andreassen, Ingrid Krogrud; Bakke, Ingrid; Østgaard, Kjetill; Cervantes, Francisco J.; Vadstein, Olav. (2015) Adaptation of a freshwater Anammox consortium to marine conditions to achieve nitrogen removal. 14th World Congress on Anaerobic Digestion

2014

Interview

Vadstein, Olav. (2014) Nytt virus funnet: - Angriper hjernen til friske mennesker Helsemyndighetene: - Oppsiktsvekkende.
Conference lecture

Forberg, Torunn; Vadstein, Olav. (2014) Bruk av bakteriefrie torsk for å studere samspillet mellom vert og bakterier. Programkonferanse Havbruk
Conference lecture

Forberg, Torunn; Vadstein, Olav. (2014) Development of a Gnotobiotic system for Atlantic cod (Gadus morhua L.) to study host responses of microbiota. NBS kontaktmøte
Conference poster

Vestrum, Ragnhild Inderberg; Forberg, Torunn; Vadstein, Olav. (2014) Impact of live versus dead bacteria on survival, growth, and gene expression in Atlantic cod (Gadus morhua) larvae. NBS Contact Meeting 2014
Conference poster

Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bakke, Ingrid; Bones, Atle M.; Vadstein, Olav; Kjørsvik, Elin; Olsen, Yngvar. (2014) GENE REGULATION OF ATLANTIC COD (GADUS MORHUA) LARVAE WITH FOCUS ON LIPID DIGESTION AND PHOSPHOLIPID METABOLISM. Aquaculture Europe 2014
Interview

Reitan, Kjell Inge; Vadstein, Olav. (2014) La laksen spise alger.
Conference poster

Vestrum, Ragnhild Inderberg; Forberg, Torunn; Bakke, Ingrid; Vadstein, Olav. (2014) Quorum sensing-hemmende bakterier beskytter torskelarver mot Vibrio anguillarum infeksjon. Programkonferansen HAVBRUK 2014
Interview

Vadstein, Olav. (2014) Oppstart av prosjekt ang mikroorganismer som produsenter av omega3-fettsyrer.

2013

Conference poster

Olsen, Lasse Mork; Ardelan, Murat Van; Holm-Hansen, Osmund; Bizsel, Nihayet; Hewes, Christopher D.; Reiss, Christian; Sakshaug, Egil; Vadstein, Olav. (2013) Microbial communities in the surface water masses surrounding the South Shetland Islands, Antarctica. ASLO Aquatic Sciences Meeting
Lecture

Vadstein, Olav. (2013) Alger som nyttevekster. Norsk Botanisk Forening
Interview

Vadstein, Olav; Olsen, Yngvar. (2013) Trenger et kraftløft for fôr.
Conference poster

Sousoni, D.; Bakke, Ingrid; Dahle, S.W.; Vadstein, Olav; Skjermo, Jorunn. (2013) Differences in the microbiota of cultivated microalgae and algal paste used in larviculture. AQUACULTURE EUROPE `13,
Conference poster

Li, Keshuai; Østensen, Mari-Ann; Attramadal, Kari; Winge, Per; Sparstad, Torfinn; Bakke, Ingrid; Bones, Atle M.; Vadstein, Olav; Kjørsvik, Elin; Olsen, Yngvar. (2013) GENE REGULATION OF ATLANTIC COD (GADUS MORHUA) LARVAE WITH FOCUS ON LIPID DIGESTION AND PHOSPHOLIPID METABOLISM. LARVI 2013 6th fish & shellfish larviculture symposium
Conference poster

Brembu, Tore; Chauton, Matilde Skogen; Winge, Per; Vadstein, Olav; Bones, Atle M.. (2013) Gene regulation of carbon fixation, storage and utilisation in Phaeodactylum tricornutum acclimated to light/dark cycles. Molecular Life of Diatoms
Conference lecture

Attramadal, Kari; Øie, Gunvor; Kjørsvik, Elin; Minniti, Giusi; Olsen, Yngvar; Skjermo, Jorunn; Bakke, Ingrid; Østensen, Mari-Ann; Vadstein, Olav. (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
Conference lecture

Forberg, Torunn; Vadstein, Olav. (2013) Lessons learned from gnotobiotic systems on the effect of bacteria on growth, survival, and gene expression in marine larvae. Conference Larvi 2013
Conference lecture

Schryver, Peter De; Vadstein, Olav. (2013) The application of ecological theory for microbial control in aquaculture. Conference Larvi 2013
Conference lecture

Bakke, Ingrid; Skjermo, Jorunn; Attramadal, Kari; Coward, Eivind; Kjørsvik, Elin; Vo, Tu Anh; Olsen, Yngvar; Vadstein, Olav. (2013) Bacterial community assembly in developing cod larvae (Gadus morhua). Conference Larvi 2013
Conference lecture

Vadstein, Olav. (2013) Kiselalger i solcelle- og materialforskning. Norsk Algeforening sitt årsmøte “Alger til nytte”,
Conference poster

Olsen, L.M.; Ardelan, M.V.; Holm-Hansen, O.; Bizsel, N.; Hewes, C.; Reiss, C.; Sakshaug, Egil; Vadstein, Olav. (2013) Microbial Communities In The Surface Water Masses Surrounding The South Shetland Islands, Antarctica. ASLO Aquatic sciences meeting
Conference lecture

Vadstein, Olav; Olsen, Yngvar; Attramadal, Kari; Bakke, Ingrid; Forberg, Torunn; Skjermo, Jorunn; Aasen, Inga Marie; Gatesoupe, F.J.; Dierckens, K.; Schryver, P. De. (2013) The microbial world of cultured larvae: a concept model. “Aquaculture conference: To the Next 40 Years of Sustainable Global Aquaculture”.
Interview

Vadstein, Olav; Olsen, Yngvar. (2013) Et godt kinderegg.

2012

Conference lecture

Forberg, Torunn; Vadstein, Olav. (2012) Gnotobiotic systems for Atlantic cod Gadus morhua to study host responses to microbiota: system development and applications. Aqua 2012
Conference lecture

Bakke, Ingrid; Skjermo, Jorunn; Vo, Tu Anh; Vadstein, Olav. (2012) Diet is not a good tool for steering microbiota of cod larvae. Aqua 2012
Conference lecture

Flo, Trude Helen; Steigedal, Magnus; Damås, Jan Kristian; Strong, Roland; Rognstad, Øyvind Bakken; Mobley, Harry LT; Vadstein, Olav; Bakke, Ingrid. (2012) Lipocalin 2 in protection of mucosal surfaces and shaping of intestinal microflora. EMBO|EMBL Symposium : New Perspectives on Immunity to Infection
Conference lecture

Attramadal, Kari; Truong, T.H.H.; Bakke, Ingrid; Vadstein, Olav. (2012) RAS and microbial maturation as tools of K-selection of microbial communities improve survival in cod larvae. AQUA2012, September 1-5, Prague, Czech Republic.
Conference lecture

Aasen, Inga Marie; Borgos, Sven Even F.; Giatsis, C.; Verdegem, M.J.C.; Gatesoupe, F.J.; Bakke, Ingrid; Vadstein, Olav. (2012) Profiling gut metabolites as response to diet and environmental microbiota. AQUA2012
Conference lecture

Vadstein, Olav; Bossier, P.. (2012) Microbial management in aquaculture. AQUA2012
Lecture

Vadstein, Olav; Bakke, Ingrid. (2012) Miljøbioteknologi. Campusbesøk
Conference 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

2011

Conference 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
Conference lecture

Blancheton, Jean-Paul; Attramadal, Kari; Michaud, L.; d’Orbcastel, E. Roque; Vadstein, Olav. (2011) Recirculation systems in Europe: state of the art and prospects. RAS workshop
Conference lecture

Vadstein, Olav. (2011) Gnotobiotic systems as a tool for unravelling host/microbe interaction in larval stages of fish. CCMAR - Centro de Ciências do Mar
Conference lecture

Vadstein, Olav. (2011) Trophic cascades in marine plankton: Calanoid copepods as a keystone group. X Ciclo de Conferencias sobre Biodiversidad y Conservacion
Lecture

Vadstein, Olav. (2011) Kan bioteknologi revolusjonere oppdrettsnæringen?. FUGE Midt-Norge
Feature article

Vadstein, Olav. (2011) Oppdrett og troverdighet.
Conference poster

Vadstein, Olav; Skjermo, Jorunn. (2011) "PROMICROBE". Faktaark for NTNU/SINTEFs stand under akvakulturmessen Aqua Nor 2011. Aqua Nor 2011

2010

Conference lecture

Attramadal, Kari; Thuy, Minh Vu Thi; Buran, Astrid; Wold, Per-Arvid; Øie, Gunvor; Vadstein, Olav; Leiknes, TorOve; Olsen, Yngvar. (2010) Recirculation as a microbial control strategy in intensive aquaculture of marine larvae. Aquacultural Engineering Special Issues Forum
Conference lecture

Bossier, P.; Vadstein, Olav; Olsen, Yngvar; Boon, N.; Bergh, Ø.; Gatesoupe, F.J.; Picchietti, S.; Abelli, L.; Buonocore, E.; Fausto, A.M.. (2010) Microbiology and immunology of larviculture. Aquaculture Europe 2010
Conference lecture

Vadstein, Olav; Vestrum, Ragnhild Inderberg; Forberg, Torunn. (2010) Impact of live versus dead bacteria on survival, growth and gene expression in gnotobiotic Atlantic cod (Gadus morhua) larvae. Gut Microbiology: new insights into gut microbial ecosystems
Conference lecture

Attramadal, Kari; Salvesen, Ingrid; Øie, Gunvor; Xue, Renyu; Størseth, Trond; Vadstein, Olav; Olsen, Yngvar. (2010) Recirculation as a microbial control strategy in intensive aquaculture of marine larvae. Aquaculture 2010, World Aquaculture Society
Conference lecture

Vadstein, Olav; Bakke, Ingrid; Skjermo, Jorunn. (2010) Determination of the time window for successful steering of the intestinal microflora in atlantic cod Gadus morhua L. Aquaculture Europe 2010
Conference lecture

Attramadal, Kari; Vu, T.T.M.; Buran, Astrid; Wold, Per-Arvid; Øie, Gunvor; Leiknes, TorOve; Vadstein, Olav; Olsen, Yngvar. (2010) Recirculation as a microbial control strategy in intensive aquaculture of marine larvae. Aquaculture Europe 2010
Conference poster

Bakke, Ingrid; Skjermo, Jorunn; Dahle, Stine Veronica Wiborg; Vadstein, Olav. (2010) Steering of cod larvae (Gadus morhua) gut microbiota: Timing for probiotic treatment. Gut Microbiology: new insights into gut microbial ecosystems
Conference poster

Skjermo, Jorunn; Vo, Tu Anh; Bakke, Ingrid; Overrein, Ingrid; Øie, Gunvor; Vadstein, Olav. (2010) Development of the gut microbiota in atlantic cod Gadus morhua L. larvae fed copepods and rotifers. Aquaculture Europe 2010
Conference poster

Skjermo, Jorunn; Anh, Vo Tu; Bakke, Ingrid; Overrein, Ingrid; Øie, Gunvor; Vadstein, Olav. (2010) Development of the gut microbiota in atlantic cod Gadus morhua L. larvae fed copepods and rotifers. Gut Microbiology: new insights into gut microbial ecosystems

2009

Conference lecture

Vadstein, Olav. (2009) Resirkulering i akvakultur: Mer enn avfallshåndtering. Akvakultur - muligheter og trusler i vann
Conference poster

Forberg, Torunn; Vadstein, Olav; Arukwe, Augustine. (2009) Strategies to unravel gene expression responses of host-microbe interactions in cod (Gadus morhua) larvae. LARVI’09 – 5th Fish & shellfish symposium
Conference poster

Vestrum, Ragnhild Inderberg; Forberg, Torunn; Vadstein, Olav. (2009) Impact of live versus dead bacteria on survival, growth, and gene expression in Atlantic cod (Gadus morhua) larvae. LARVI’09 – 5th Fish & shellfish symposium
Conference lecture

Forberg, Torunn; Vadstein, Olav; Arukwe, Augustine. (2009) HOST RESPONSES TO BACTERIA IN GNOTOBIOTIC ATLANTIC COD (GADUS MORHUA) LARVAE. Aquaculture Europe 2009
Conference lecture

Bossier, P.; Dierckens, K.; Delsen, B. Van; Defoirdt, T.; Schryver, P. De; Vadstein, Olav; Aasen, Inga-Marie; Gatesoupe, F.J.; Verreth, J.; Smidt, H.. (2009) The role of microbiota in aquaculture target organisms and their environment. Aquaculture Europe 2009

2008

Conference lecture

Forberg, Torunn; Vadstein, Olav; Arukwe, Augustine. (2008) Differential gene expression in Atlantic cod larvae (Gadus morhua) raised with and without bacteria. 6th INRA-ARI symposium Gut Microbiome
Conference lecture

Vadstein, Olav; Østgaard, Kjetill. (2008) Miljøbioteknologi. TEKNA Biologiseminar
Conference lecture

Vadstein, Olav. (2008) Recirculation: More than Waste Management. Twin Event
Conference lecture

Attramadal, Kari; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar. (2008) Recirculation technology for marine fish production. COST-EUREKA Twin Event Enkhuizen
Conference poster

Forberg, Torunn; Vadstein, Olav; Arukwe, Augustine. (2008) Differential gene expression in Atlantic cod larvae (Gadus morhua) raised with and without bacteria. "Microorganisms and health" Nordforsk
Conference 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.). ”Resirkulering av vann i akvakultur”
Lecture

Kjørsvik, Elin; Attramadal, Kari; Øie, Gunvor; Alfredsen, Jo Arve; Alver, Morten; Larssen, Harald; Overrein, Ingrid; Reitan, Kjell Inge; Vadstein, Olav. (2008) CODTECH En prosessorientert tilnærming til intensiv produksjon av marin fiskeyngel med hovedfokus på torsk. Faktaark for forskningsprogrammet "Havbruk - en næring i vekst"

2007

Conference 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. Aquaculture Europe 07, Competing Claims
Conference 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.). Aquaculture Europe 07, Competing Claims

2006

Conference poster

Saage, Andrea; Vadstein, Olav; Sommer, Ulrich. (2006) Feeding behaviour of two marine calanoid copepods: Calanus finmarchicus and Centropages hamatus. ASLO summer meeting, Global Challenges Facing Oceanography and Limnology
Conference poster

Skjermo, Jorunn; Fjellheim, Anders; Klinkenberg, Geir; Vadstein, Olav; Aasen, Inga Marie. (2006) Høykapasitets screening av bakterier fra torsk (Gadus morhua). Programkonferanse HAVBRUK
Conference poster

Fjellheim, Anders; Playfoot, Karina Jane; Aasen, Inga Marie; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2006) A new strategy for screening of probiotic bacteria, applied on cod larvae. Programkonferanse HAVBRUK
Conference lecture

Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2006) Vigilance and impact of the nutrient loading on the pelagic ecosystem. VII Jornadas de Salmonicultura
Conference 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"
Conference 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
Conference lecture

Fjellheim, Anders; Playfoot, Karina; Aasen, Inga Marie; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2006) Evaluation of potential probiotics for cod larvae. AQUACULTURE EUROPE 2006/ WORLD AQUACULTURE 2006
Conference lecture

Vadstein, Olav. (2006) Genetic implications in the production of rotifers in commercial finfish. Programkonferanse HAVBRUK
Conference lecture

Skjermo, Jorunn; Fjellheim, Anders; Klinkenberg, Geir; Vadstein, Olav; Aasen, Inga Marie. (2006) High through-put screening of bacteria from cod Gadus morhua L. for probiotic properties. AQUACULTURE EUROPE 2006/ WORLD AQUACULTURE 2006
Conference 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

2005

Conference poster

Salvesen, Ingrid; Attramadal, Kari; Vadstein, Olav. (2005) Interactions between bacteria and suspended particles in intensive larval culture: A comparison between microalgae, algal concentrate and clay. LARVI’05 – Fish & Shellfish Larviculture Symposium
Conference poster

Playfoot, Karina; Fjellheim, Anders; Vadstein, Olav. (2005) Isolation and characterisation of bacteria from the gut of cod larvae for consideration of probiotic effects. LARVI’05 – Fish & Shellfish Larviculture Symposium
Conference 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
Conference poster

Kostopoulou, Venetia; Vadstein, Olav. (2005) Growth kinetics in three strains of the Brachionus plicatilis species complex. LARVI’05 – Fish & Shellfish Larviculture Symposium
Conference poster

Eggen, Runar; Tokle, Nils Egil; Evjemo, Jan Ove; Vadstein, Olav. (2005) Effect of algal species and physiological status on egg production and growth of copepods. ASLO Summer meeting 2005
Conference 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
Conference lecture

Fjellheim, Anders; Playfoot, Karina; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2005) Characterization of the dominant and the antagonistic bacterial flora of cod (Gadus morhua L.) larvae reared under different conditions. Aquaculture Europe 2005
Conference lecture

Stibor, Herwig; Sommer, Ulrich; Vadstein, Olav. (2005) Silicate, phytoplankton size structure and trophic cascades in marine plankton communities: A mesocosm study. ASLO Summer meeting 2005
Conference lecture

Olsen, Yngvar; Slagstad, Dag; Vadstein, Olav. (2005) Assimilative carrying capacity: Contribution and impact on the pelagic system. Aquaculture Europe 2005
Conference 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
Conference lecture

Fjellheim, Anders; Playfoot, Karina; Aasen, Inga Marie; Klinkenberg, Geir; Skjermo, Jorunn; Vadstein, Olav. (2005) Evaluation of potential probiotics for cod larvae: Impact of initial screening strategy. LARVI’05 – Fish & Shellfish Larviculture Symposium

2004

Conference lecture

Papakostas, S.; Dooms, S.; Triantafyllidis, A.; Deloof, D.; Kappas, I.; Dierckens, K.; Wolf, T. De; Bossier, P.; Vadstein, Olav; Kui, S.. (2004) Genetic identification of Brachionus species used in different hatcheries. Aquaculture Europe 2004
Conference lecture

Skjermo, J.; Størseth, T.R.; Fjellheim, Anders; Hansen, A.H.; Salvesen, I.; Vadstein, Olav. (2004) The use of immunostimulants and probiotics for improved microbial management in intensive culture of marine fish larvae. Aquaculture Europe 2004
Conference lecture

Vadstein, Olav; Endal, Anders; Magnussen, Ola Magnus; Olsen, Yngvar. (2004) Zooplankton as a resource in feed production: Possibilities, constrains and challenges. Aquaculture Europe 2004
Conference poster

Papakostas, S.; Kanellis, D.; Kappas, I.; Baxevanis, A.; Wolf, T. De; Dooms, S.; Vadstein, Olav; Dierckens, K.; Sorgeloos, P.; Triantafyllidis, A.. (2004) Genetic study of Brachionus sp. rotifers from european hatcheries: Preliminary results. 26th congress of the Panhellenic Society of Biological Sciences
Conference lecture

Olsen, Lasse Mork; Øzturk, Murat; Sakshaug, Egil; Vadstein, Olav; Sandaa, Ruth Anne; Johnsen, Geir. (2004) Interactions between metabolism, geochemistry and bacterial diversity in cultures of the marine dinoflagellate Prorocentrum minimum. ASLO møte

2003

Conference lecture

Tokle, Nils Egil; Chauton, Matilde Skogen; Leiknes, Øystein; Lilleøkdal, Grete; Vadstein, Olav; Olsen, Yngvar. (2003) Impact of food concentrations and predation on ciliates in a Norwegian fjord (Trondheimsfjord). 3rd International Zooplankton Production Symposium - The role of zooplankton in global ecosystem dynamics: Comparative studies from the world oceans
Conference lecture

Vadstein, Olav; Olsen, Lasse Mork; Andersen, Tom; Reinertsen, Helge. (2003) Grazing by Brachionus plicatilis: Prey dependent or ratio dependent. Rotifera X international symposium
Conference lecture

Vadstein, Olav; Andersen, Tom. (2003) Construction of flow networks of microbial food webs. FEMS Worskshop: Assessing the variability in aquatic microbial populations: Facts and fiction
Conference poster

Gismervik, Ingrid; Vadstein, Olav; Olsen, Yngvar. (2003) Ciliate community response to increased food levels and reduced predation pressure: Results from a large scale marine experiment of a landlocked bay. Poster
Conference poster

Salvesen, Ingrid; Reitan, Kjell Inge; Skjermo, Jorunn; Vadstein, Olav; Øie, Gunvor. (2003) Interactions between microalgae and bacteria in intensive marine larviculture. 11th International Conference European Association of Fish Pathologists
Conference poster

Gismervik, Ingrid; Vadstein, Olav; Olsen, Yngvar. (2003) Ciliate community response to increased food levels and reduced predation pressure: Results from a large scale experiment. 3rd International Zooplankton Symposium. The role of zooplankton in gobal ecosystem dynamics: Comparative studies from the world oceans

2002

Conference lecture

Vadstein, Olav; Busch, Arild; Olsen, Lasse Mork; Andersen, Tom; Reinertsen, Helge. (2002) Is phosphorus limitation of heterotrophic bacteria and accumulation of degradable organic carbon a normal phenomenon in phosphorus limited systems? A microcosm study. 8th Symposium on Aquatic Microbial Ecology (SAME-8)
Conference lecture

Skjermo, Jorunn; Rokstad, Anne Mari Aukan; Salvesen, Ingrid; Skjåk-Bræk, Gudmund; Vadstein, Olav. (2002) Immunostimulation in marine larval rearing. ICES 2002 Annual Science Conference

2001

Conference lecture

Salvesen, Ingrid; Skjermo, Jorunn; Vadstein, Olav. (2001) Magic solutions to bacterial problems in early life stages: Do they exist?. 3rd Fish & Shellfish Larviculture Symposium
Conference poster

Vadstein, Olav; Østensen, Mari-Ann; Enger, Øivind; Salvesen, Ingrid. (2001) Describing Bacterial Community Succession: A comparison of Plate Count Based Methods and Denaturing Gradient Gel Electrophoresis using Seawater Microcosms. 9th International Symposium on Microbial Ecology

2000

Conference lecture

Vadstein, Olav; Olsen, Yngvar; Reinertsen, Helge; Hoell, Espen; Gismervik, Ingrid; Sommer, Ulrich; Andersen, Tom. (2000) Pelagic environmental effects of experimental fertilisation of coastal lagoon. 1st Maricult Conference
Feature article

Vadstein, Olav. (2000) Dørum og universitetene.
Conference lecture

Olsen, Lasse Mork; Reinertsen, Helge; Vadstein, Olav. (2000) Can phosphorus limitation inhibit dissolved organic carbon consumption in aquatic microbial food webs ? A study of three food web structures in microcosms. ASLO meeting

1999

Conference lecture

Skjermo, Jorunn; Salvesen, Ingrid; Conceicão, Luis; Skjåk-Bræk, Gudmund; Vadstein, Olav. (1999) Microbial control in larval culture: Effects of non-specific immunostimulation of larval turbot (Scophthalmus maximus L). Aquaculture Europe 99: Towards predictable quality
Conference lecture

Makridis, Pavlos; Bergh, Øivind; Fjellheim, Anders Jon; Skjermo, Jorunn; Vadstein, Olav. (1999) Microbial control of live food cultures. Aquaculture Europe 99: Towards predictable quality
Conference lecture

Vadstein, Olav. (1999) Microbial problems in the hatcheries: Analysis of the problem and a strategy out. Aquaculture Europe 99: Towards predictable quality
Conference lecture

Olsen, Atle I.; Olsen, Yngvar; Atramadal, Yngve; Vadstein, Olav; Birkbeck, Harry. (1999) Microbial control in larval cultures: Effect of short term feeding on microalgae on bacterial level and composition associated with juvenile Artemia franciscana. Aquaculture Europe 99: Towards predictable quality
Conference lecture

Reitan, Kjell Inge; Øie, Gunvor; Vadstein, Olav; Olsen, Yngvar; Reinertsen, Helge. (1999) Enhanced Nutrient Supply to Norwegian Coastal Waters: Effects on Growth of Scallops and Blue Mussels. 28th UNJNR Aquaculture Panel Meeting
Conference lecture

Makridis, Pavlos; Skjermo, Jorunn; Vadstein, Olav. (1999) Development of methods for the transfer of probiotic bacteria to marine fish larvae through live feed organisms. World Aquaculture '99
Conference poster

Fjellheim, Anders Jon; Makridis, Pavlos; Skjermo, Jorunn; Vadstein, Olav. (1999) Rotifers (Brachionus plicatilis) as vector for probiotics to turbot larvae (Scophthalmus maximus). Aquaculture Europe 99: Towards predictable quality
Conference poster

Vadstein, Olav; Olsen, Yngvar; Reinertsen, Helge; Hoell, Espen; Gismervik, Ingrid; Sommer, Ulrich; Andersen, Tom. (1999) The Hopavågen experiment: A four-year artificial eutrophication experiment in a land-locked bay. European Land-Ocean interaction Studies (ELOISE) Third Open Science Meeting
Conference lecture

Vadstein, Olav. (1999) Microbial problems in the hatcheries: Analysis of the problem and a strategy out. World Aquaculture '99
Lecture

Rokstad, Anne Mari Aukan; Espevik, Terje; Skjåk-Bræk, Gudmund; Vadstein, Olav; Skjermo, Jorun. (1999) Alginates as adjuvant in fish vaccine against Aeromonas salmonicida. 35. Biokjemiske Kontaktmøte, NBS

1998

Conference lecture

Vadstein, Olav; Olsen, Yngvar; Reinertsen, Helge. (1998) Sequestration of nitrogen and phosphorus by planktonic algae and bacteria in limnetic and marine waters. The Land-Water interface: Science for a Sustainable Biosphere

1997

Conference poster

Vadstein, Olav; Dalløkken, Runar; Olsen, Yngvar; Sandvik, Roar; Reinertsen, Helge. (1997) Size related sequestering of makro-nutrients by plankton in North Atlantic waters. European Land-Ocean interaction Studies (ELOISE) First Open Science Meeting

1996

Conference lecture

Reitan, K. I.; Rainuzzo, J. R.; Øie, G.; Vadstein, Olav; Olsen, Yngvar. (1996) Optimizing of larval densities in first-feeding of turbot using green-water and clear-water techniques. World aquaculture' 96".

Språkvelger

Olav Vadstein

Olav Vadstein

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