Olav Vadstein
Background and activities
I’m a professor in Microbial Ecology with general interest in aquatic ecosystems - both natural and un-natural (human created).
Areas of speciality/Fields of responsibility
- Professor in microbial ecology
- Leader of the research group "Analysis and Control of Microbial Systems"
- Teaches TBT4110 Microbiology, BT8101 Microbial Ecology,
- Involved in the projects MIRA, MicStaTech, MICRO-Feed, MicroMucus, EurOmega, DIACIL
I’m a professor 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
- Optimization of lipids in microalgae as a raw material for fish feed
- Biotechnological applications of microalgae in material science
Courses
- BI3090 - Internship Project
- BI3094 - Internship Comprehensive Project
- BT8101 - Microbial Ecology
- BI3095 - AquaHealth Club
- BT3090 - Internship Project
- BT3094 - Internship Comprehensive Project
- BT3102 - Function and operation of recirculating aquaculture systems (RAS)
- TBT4110 - Microbiology
- BI3911 - Master thesis in MSAQUAH Health Management in Aquaculture
- BT3210 - Recirculating Aquaculture Systems RAS
- BT6010 - Recirculating Aquaculture Systems - RAS
Scientific, academic and artistic work
A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database
Journal publications
- (2022) Changes in rearing water microbiomes in RAS induced by membrane filtration alters the hindgut microbiomes of Atlantic salmon (Salmo salar) parr. Aquaculture. vol. 548 (2).
- (2022) Removal of microparticles and bacterial inactivation in freshwater RAS by use of foam fractionation, H2O2 and NaCl. Aquaculture Research. vol. 53 (9).
- (2022) Salinity Acclimation Strategies in Nitrifying Bioreactors. Frontiers in Marine Science. vol. 9.
- (2022) Mechanisms Generating Dichotomies in the Life Strategies of Heterotrophic Marine Prokaryotes. Diversity. vol. 14 (3).
- (2022) Commensal and opportunistic bacteria present in the microbiota in atlantic cod (Gadus morhua) larvae differentially alter the hosts’ innate immune responses. Microorganisms. vol. 10 (1).
- (2021) UV treatment in RAS influences the rearing water microbiota and reduces the survival of European lobster larvae (Homarus gammarus). Aquacultural Engineering. vol. 94.
- (2021) Management of biofloc concentrations as an ecological strategy for microbial control in intensive shrimp culture. Aquaculture. vol. 543.
- (2021) Microbial community dynamics in a commercial RAS for production of Atlantic salmon fry (Salmo salar). Aquaculture. vol. 546.
- (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. vol. 532.
- (2021) Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater. Scientific Reports. vol. 11 (2979).
- (2021) The effect of periodic disturbances and carrying capacity on the significance of selection and drift in complex bacterial communities. ISME Communications.
- (2021) Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation. Science of the Total Environment. vol. 782.
- (2021) Seeding as a start-up strategy for improving the acclimation of freshwater nitrifying bioreactors to salinity stress. Aquaculture. vol. 540 (736663).
- (2021) Dietary Lipid Effects on Gut Microbiota of First Feeding Atlantic Salmon (Salmo salar L.). Frontiers in Marine Science. vol. 8.
- (2021) Nanocosm: A well plate photobioreactor for environmental and biotechnological studies. Lab on a Chip. vol. 21 (10).
- (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. vol. 524.
- (2020) Comparative transcriptomics reveals domestication‐associated features of Atlantic salmon lipid metabolism. Molecular Ecology. vol. 29 (10).
- (2020) Nitrifying biofilms deprived of organic carbon show higher functional resilience to increases in carbon supply. Scientific Reports. vol. 10.
- (2020) A salty start: Brackish water start-up as a microbial management strategy for nitrifying bioreactors with variable salinity. Science of the Total Environment. vol. 739.
- (2020) Biofilms remember: Osmotic stress priming as a microbial management strategy for improving salinity acclimation in nitrifying biofilms. Water Research. vol. 176.