I am a microbial ecologist interested in how natural and human drivers affect populations, communities and ecosystems at different spatial and temporal scales. 

I am a Group Leader at the Computational Biological Unit (CBU), and lead the work-package 'Energy and Life' at the K.G. Jebsen Centre for Deep Sea Research.

My research is centered around the following research questions:

How is microbial community structure and diversiy shaped by chemical power supply?

What is the connection between the geological setting, geochemistry, and microbial ecology of hydrothermal systems?

How does marine mine tailings in Norwegian fjords affect microbial life?

What is the optimal microbial community structure in land-based fish farms (RAS), and how to maintain it?

To address these questions we make use of population dynamic models, field observations, and statistical analyses. A central part of our work is bioinformatic analyses of next generation sequencing data.

Please make contact if you are interested in a PhD, MSc, or a Bachelor project connected to any of these themes.

 

 

Public outreach

Polhavets hemmeligheter (kronikk i Nordlys)

 

Academic article

• Irene Roalkvam; Karine Drønen; Håkon Dahle et al. (2019). Comparison of active biofilm carriers and commercially available inoculum for activation of biofilters in marine recirculating aquaculture systems (RAS). (external link)
• Jesslyn Tjendra; Julia Endresen Storesund; Håkon Dahle et al. (2023). Molecular evidence of parallel evolution in a cyanophage. (external link)
• David Diego Castro; Bjarte Hannisdal; Håkon Dahle (2021). On how the power supply shapes microbial survival. (external link)
• Romain Blanc-Mathieu; Håkon Dahle; Antje Hofgaard et al. (2021). A persistent giant algal virus, with a unique morphology, encodes an unprecedented number of genes involved in energy metabolism. (external link)
• Ming Lu; Eivind Grøv; Håkon Dahle et al. (2008). Rock support design for special lighting caverns in high in-situ stress rock mass. (external link)
• Leila Jafari; Marie Aline Montjourides; Anne-Camilla Diesen Hosfeld et al. (2024). Biofilter and degasser performance at different alkalinity levels in a brackish water pilot scale recirculating aquaculture system (RAS) for post-smolt Atlantic salmon. (external link)
• Rui Zhao; Håkon Dahle; Gustavo A. Ramírez et al. (2020). Indigenous ammonia-oxidizing archaea in oxic subseafloor oceanic crust. (external link)
• Marie Aline Montjourides; Susanna Röblitz; Håkon Dahle (2024). Optimizing alkalinity control in recirculating aquaculture systems (RAS): A dynamic modelling approach. (external link)
• Irene Roalkvam; Steffen Leth Jørgensen; Yifeng Chen et al. (2011). New insight into stratification of anaerobic methanotrophs in cold seep sediments. (external link)
• Sven Le Moine Bauer; Irene Roalkvam; Ida Helene Steen et al. (2016). Lutibacter profundi sp. nov., isolated from a deep-sea hydrothermal system on the Arctic Mid-Ocean Ridge and emended description of the genus Lutibacter. (external link)
• T. Jennifer Lin; Helene C. Ver Eecke; Elly A. Breves et al. (2016). Linkages between mineralogy, fluid chemistry, and microbial communities within hydrothermal chimneys from the Endeavour Segment, Juan de Fuca Ridge. (external link)
• Irene Roalkvam; Karine Drønen; Runar Stokke et al. (2015). Physiological and genomic characterization of Arcobacter anaerophilus IR-1 reveals new metabolic features in Epsilonproteobacteria. (external link)
• Jan Pieter Vander Roost; Ingunn Hindenes Thorseth; Håkon Dahle (2017). Microbial analysis of Zetaproteobacteria and co-colonizers of iron mats in the Troll Wall Vent Field, Arctic Mid-Ocean Ridge. (external link)
• Petra Hribovšek; Emily Maria Denny; Achim Mall et al. (2025). Adaptation strategies of iron-oxidizing bacteria Gallionella and Zetaproteobacteria crossing the marine–freshwater barrier. (external link)
• Irene Roalkvam; Karine Drønen; Håkon Dahle et al. (2019). Microbial Communities in a Flow-Through Fish Farm for Lumpfish (Cyclopterus lumpus L.) During Healthy Rearing Conditions. (external link)
• Irene Roalkvam; Håkon Dahle; Yifeng Chen et al. (2012). Fine-scale community structure analysis of ANME in Nyegga sediments with high and low methane flux. (external link)
• Håkon Dahle; Bjarte Hannisdal; Bjørn Olav Steinsbu et al. (2011). Evolution of temperature optimum in Thermotogaceae and the prediction of trait values of uncultured organisms. (external link)
• Camilla Lothe Nesbø; Kirsten S. Swithers; Håkon Dahle et al. (2015). Evidence for extensive gene flow and Thermotoga subpopulations in subsurface and marine environments. (external link)
• Eva Ramirez-Llodra; Claudio Argentino; Maria Baker et al. (2022). Hot Vents Beneath an Icy Ocean: The Aurora Vent Field, Gakkel Ridge, Revealed. (external link)
• Petra Hribovšek; Emily Maria Denny; Håkon Dahle et al. (2023). Putative novel hydrogen- and iron-oxidizing sheath-producing Zetaproteobacteria thrive at the Fåvne deep-sea hydrothermal vent field. (external link)
• Håkon Dahle; Sven Le Moine Bauer; Tamara Baumberger et al. (2018). Energy landscapes in hydrothermal chimneys shape distribution of primary producers. (external link)
• Hasan ARSIN; Andrius Jasilionis; Håkon Dahle et al. (2021). Exploring codon adjustment strategies towards Escherichia coli-based production of viral proteins encoded by HTH1, a novel prophage of the marine bacterium Hypnocyclicus thermotrophus. (external link)
• Camilla L. Nesbø; Eric Bapteste; Bruce Curtis et al. (2009). The Genome of Thermosipho africanus TCF52B: Lateral Genetic Connections to the Firmicutes and Archaea. (external link)
• Haina Wang; Lingjie Meng; Sara Otaegi Ugartemendia et al. (2025). Haptophyte-infecting viruses change the genome condensing proteins of dinoflagellates. (external link)
• Håkon Dahle; Nils-Kåre Birkeland (2006). Thermovirga lienii gen. nov., sp. nov., a novel moderately thermophilic, anaerobic, amino-acid-degrading bacterium isolated from a North Sea oil well. (external link)
• Jonathan L. DiPippo; Camilla L. Nesbø; Håkon Dahle et al. (2009). Kosmotoga olearia gen. nov., sp nov., a thermophilic, anaerobic heterotroph isolated from an oil production fluid. (external link)
• Asbjørg Karine Drønen; Irene Roalkvam; Hanne Katrine Nilsen et al. (2022). Presence and habitats of bacterial fish pathogen relatives in a marine salmon post-smolt RAS. (external link)
• Danielle Grant; Kristine Steinsland; Tristan Cordier et al. (2024). Sedimentary ancient DNA sequences reveal marine ecosystem shifts and indicator taxa for glacial-interglacial sea ice conditions. (external link)
• Jon Thomassen Hestetun; Håkon Dahle; Steffen Leth Jørgensen et al. (2016). The Microbiome and Occurrence of Methanotrophy in Carnivorous Sponges. (external link)
• Francesca Vulcano; Cedric Jasper Hahn; Desiree Lisette Roerdink et al. (2022). Phylogenetic and functional diverse ANME-1 thrive in Arctic hydrothermal vents. (external link)
• Asbjørg Karine Drønen; Irene Roalkvam; Håkon Dahle et al. (2022). Microbiome dataset from a marine recirculating aquaculture system (RAS) for salmon post-smolt production in Norway. (external link)
• Runar Stokke; Eoghan Reeves; Håkon Dahle et al. (2020). Tailoring hydrothermal vent biodiversity towards improved biodiscovery using a novel in-situ enrichment strategy. (external link)
• Paulo Fernandes; Ludvik Wolfgang Forbord Fiksdal; Paula Andrea Rojas-Tirado et al. (2026). Biofilter performance, water quality, and microbial dynamics in RAS operated under high or low suspended solids load. (external link)
• Asbjørg Karine Drønen; Irene Roalkvam; Håkon Dahle et al. (2021). Microbial colonization and community stability in a marine post-smolt RAS inoculated with a commercial starter culture. (external link)
• Irene Roalkvam; Karine Drønen; Håkon Dahle et al. (2020). A case study of biofilter activation and microbial nitrification in a marine recirculation aquaculture system for rearing Atlantic salmon (Salmo salar L.). (external link)
• Sven Le Moine Bauer; Andreas Gilje Sjøberg; Stephane L´Haridon et al. (2019). Profundibacter amoris gen. nov., sp. nov., a new member of the Roseobacter clade isolated from Loki's Castle Vent Field on the Arctic Mid-Ocean Ridge. (external link)
• Sven Le Moine Bauer; Anne Stensland; Frida Lise Daae et al. (2018). Water masses and depth structure prokaryotic and T4-like viral communities around hydrothermal systems of the Nordic Seas. (external link)
• Håkon Dahle; Frøydis Kristi Garshol; Marit Steine Madsen et al. (2008). Microbial community structure analysis of produced water from a high-temperature North Sea oil-field. (external link)
• Håkon Dahle; Ingeborg Elisabet Økland; Ingunn Hindenes Thorseth et al. (2015). Energy landscapes shape microbial communities in hydrothermal systems on the Arctic Mid-Ocean Ridge. (external link)
• Petra Hribovšek; Emily Maria Denny; Achim Mall et al. (2024). Adaptation strategies of iron-oxidizing bacteria Gallionella and Zetaproteobacteria crossing the marine–freshwater barrier. (external link)
• Ruth-Anne Sandaa; Marius Rydningen Saltvedt; Håkon Dahle et al. (2021). Adaptive evolution of viruses infecting marine microalgae (haptophytes), from acute infections to stable coexistence. (external link)
• Karen Cecilie Johannessen; Jan Pieter Vander Roost; Håkon Dahle et al. (2017). Environmental controls on biomineralization and Fe-mound formation in a low-temperature hydrothermal system at the Jan Mayen Vent Fields. (external link)
• Håkon Dahle; Irene Roalkvam; Rolf B. Pedersen et al. (2013). The versatile in situ gene expression of an Epsilonproteobacteria-dominated biofilm from a hydrothermal chimney. (external link)
• Ida Helene Steen; Håkon Dahle; Runar Stokke et al. (2016). Novel barite chimneys at the Loki´s Castle vent field shed light on key factors shaping microbial communities and functions in hydrothermal systems. (external link)
• Ingeborg Elisabet Økland; Shanshan Huang; Håkon Dahle et al. (2012). Low temperature alteration of serpentinized ultramafic rock and implications for microbial life. (external link)
• Runar Stokke; Håkon Dahle; Irene Roalkvam et al. (2015). Functional interactions among filamentous Epsilonproteobacteria and Bacteroidetes in a deep-sea hydrothermal vent biofilm. (external link)
• Martin Bua Rønhovde; Catia Monteiro; David William Peter Dolan et al. (2025). Northern Norway Sporophytes of Saccharina latissima Display Distinct Gene Expression Profiles in Response to Temperature and Photoperiod. (external link)
• Jan Pieter Vander Roost; Frida Lise Daae; Ida Helene Steen et al. (2018). Distribution patterns of iron-oxidizing Zeta- and Beta-Proteobacteria from different environmental settings of the Jan Mayen vent fields. (external link)

Conference poster

• Petra Hribovšek; Emily Maria Denny; Thomas Øfstegaard Viflot et al. (2021). Iron Oxidizers and Sheath-forming Zetaproteobacteria in Biofilms of the Newly Discovered Fåvne Hydrothermal Vent Field. (external link)
• Haina Wang; Marius Rydningen Saltvedt; Romain Blanc-Mathieu et al. (2022). Genomes of two giant viruses and their capacity in the infection cycles. (external link)
• Nils-Kåre Birkeland; Frøydis Garshol; Håkon Dahle et al. (2002). Novel bacterial lineages dominating in oil-well formation water. (external link)
• Jan Pieter Vander Roost; Ingunn Hindenes Thorseth; Rolf B. Pedersen et al. (2014). Comparison of microbial communities within iron-containing mats at different geochemical settings in the Jan Mayen vent field. (external link)
• Ida Helene Steen; Runar Stokke; Juliane Wissuwa et al. (2014). Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers. (external link)
• Håkon Dahle; Nils-Kåre Birkeland (2003). Bioprospecting of thermophilic hydrogen-producing microorganisms. (external link)
• Julianne K.S. Gravdal; Ingeborg Elisabet Økland; Håkon Dahle et al. (2013). Stability of heavy metals in submarine tailings: A geochemical and microbiological study. (external link)
• Jonathan L. DiPippo; Camilla L. Nesbø; Håkon Dahle et al. (2008). Kosmotoga olearia gen. nov., sp. nov., a thermophilic, anaerobic heterotroph isolated from Troll B oil production fluid in the North Sea. (external link)
• Håkon Dahle; Frøydis Garshol; Marit Steine Madsen et al. (2007). Microbial community structure analysis of produced water from a high-temperature North-Sea oil-field. (external link)
• Frøydis Garshol; Håkon Dahle; Marit Madsen et al. (2003). Analysis of microbial communities associated with deep North Sea oil-wells using culture-dependent and culture-independent strategies. (external link)
• Ingeborg Elisabet Økland; F.L Daae; Håkon Dahle et al. (2012). Low temperature alteration of ultramafic rock sustaining associated microbial communities. (external link)
• Petra Hribovšek; Emily Maria Denny; Håkon Dahle et al. (2022). Sheath-forming Zetaproteobacteria abundant in black smoker chimney mats at the newly discovered Fåvne hydrothermal vent field. (external link)
• Håkon Dahle; Torleiv Lien; Marit Madsen et al. (2000). Characterisation of a new bacterial strain from the order Thermotogales, isolated from an oil-producing well in the North Sea. (external link)
• Håkon Dahle; Irene Roalkvam; Steffen Leth Jørgensen et al. (2010). Microbial community structure of biomats and chimney walls of the Loki’s Castle hydrothermal field at 73°N. (external link)
• Frøydis Garshol; Håkon Dahle; Marit Madsen et al. (2003). Analysis of microbial communities associated with deep North Sea oil-wells using culture-dependent and culture-independent strategies. (external link)
• Ole Christian Bjørgo; Håkon Dahle; Torleiv Lien et al. (1999). Isolation and characterization of two <I>Petrotoga</I>-like isolates from a North Sea oil-producing well. (external link)
• Marius Rydningen Saltvedt; Haina Wang; Janice Lawrence et al. (2022). Friend or enemy: The story of a frenemy relationship between a virus and its host. (external link)
• Petra Hribovšek; Emily Maria Denny; Håkon Dahle et al. (2022). Sheath-forming Zetaproteobacteria abundant in black smoker chimney mats at the newly discovered Fåvne hydrothermal vent field. (external link)
• Håkon Dahle; Torleiv Lien; Marit Steine Madsen et al. (2000). Characterisation of a new bacterial strain from the order Thermotogales, isolated from an oil-producing well in the North Sea. (external link)
• Håkon Dahle; Frøydis Garshol; Marit Steine Madsen et al. (2007). Microbial community structure analysis of produced water from a high-temperature oil-field in the North-Sea. (external link)
• Ingunn Hindenes Thorseth; Ida Helene Steen; Benjamin Eickmann et al. (2012). Microbial mediated formation of low-temperature hydrothermal barite chimneys. (external link)
• Kirsten Møller; R Schoenberg; Ingunn Hindenes Thorseth et al. (2012). Combined spectroscopic, microscopic and DNA analyses of hydrothermal siliceous Fe despots. (external link)
• Nils-Kåre Birkeland; Håkon Dahle; Marit Madsen (2005). Molecular and Culture-Based Analyses of Bacteria and Archaea from a North Sea Oil-Reservoir. (external link)
• Håkon Dahle; Nils-Kåre Birkeland (2004). Enrichment and isolation of thermophilic organisms capable of fermenting organic polymers. (external link)
• Emily Maria Denny; Achim Mall; Petra Hribovšek et al. (2022). Interpretation of microbial food webs from metagenomic data in deep-sea hydrothermal vents across the Arctic Mid-Ocean Ridge. (external link)
• Irene Roalkvam; Runar Stokke; Karine Drønen et al. (2015). Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from injection water. (external link)
• Irene Roalkvam; Karine Drønen; Håkon Dahle et al. (2019). Microbial activation of biofilters in marine RAS -based on lab experiments and field observations. (external link)
• Karine Drønen; Irene Roalkvam; Håkon Dahle et al. (2019). Effect of UV water treatment on microbial community structure Studied in two different land based aquaculture systems. (external link)
• Francesca Vulcano; Runar Stokke; Håkon Dahle et al. (2019). Identification of key-players in anaerobic alkane oxidation in the diffuse venting Barite Field at the Loki´s castle. (external link)
• Sven Le Moine Bauer; Ida Helene Steen; Ruth-Anne Sandaa et al. (2014). Microbial community changes within a chimney wall at the basalt-hosted Jan Mayen vent field (JMVF):Modeled predictions vs. Pyrosequencing data. (external link)
• Solveig Hoem; Håkon Dahle; Irene Roalkvam et al. (2010). Detection of methanotrophic archaea in a barite chimney at Loki’s Castle, the Arctic Mid-Ocean Ridge. (external link)
• Ida Helene Steen; Wissuwa Julianne; Bjørn Olav Steinsbu et al. (2013). Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers. (external link)
• Håkon Dahle; Irene Roalkvam; Ingunn Hindenes Thorseth et al. (2012). Metatranscriptomic and phylogenetic analysis of bacterial mats growing on chimney surfaces at the Loki´s Castle hydrothermal field. (external link)
• Håkon Dahle; Marit Steine Madsen; Frøydis Garshol et al. (2005). Molecular and Culture-Based Analysis of Bacteria and Archaea from a North Sea Oil-Reservoir. (external link)

Conference lecture

• Ruth-Anne Sandaa; Romain Blanc-Mathieu; Håkon Dahle et al. (2019). Friends or foes, strategies for stable co-existance in algel viruses infecting haptophytes. (external link)
• Håkon Dahle; Ingeborg Elisabet Økland; Ingunn Hindenes Thorseth et al. (2014). Energy landscapes shape microbial communities and the distribution of biosignatures in hydrothermal systems on the Arctic Mid-Ocean Ridge. (external link)
• Karine Drønen; Irene Roalkvam; Hanne Katrine Nilsen et al. (2018). Monitoring the main changes in the bacterial community in a RAS biofilter during the first year of operation.. (external link)
• Ida Helene Steen; Håkon Dahle; Irene Roalkvam et al. (2014). Microbial communities associated with low-temparture venting barite chimneys in the Loki´s Castle black smoker field. (external link)
• Håkon Dahle; Ingeborg Elisabet Økland; Ingunn Hindenes Thorseth et al. (2014). Use of metatranscriptomics, amplicon pyrosequencing and thermodynamics to assess how microbial communities are shaped by energy availability. (external link)
• Runar Stokke; Håkon Dahle; Ida Helene Steen (2012). Metagenomics of arctic hydrothermal vent biofilms. (external link)
• Simen Fredriksen; Paulo Fernandes; Sujan Khadka et al. (2024). Impact of particle load on water quality and microbiota in salmon recirculating aquaculture systems. (external link)
• Ingunn Hindenes Thorseth; Ida Helene Steen; Irene Roalkvam et al. (2011). Microbial processes and biomineralisation associated with low-temperature venting and formation of barite chimneys at Loki's Castle hydrothermal field. (external link)
• Ingeborg Elisabet Økland; Håkon Dahle; Ingunn Hindenes Thorseth et al. (2016). Weathering of sulphides at the Arctic Mid-Ocean Ridge. (external link)
• Irene Roalkvam; Karine Drønen; Heidrun Inger Wergeland et al. (2018). Mikrobiell overvåkning av rognkjeksanlegg -prøvetaking og analyseverktøy. (external link)
• Håkon Dahle; Frøydis Garshol; Marit Madsen et al. (2003). Treasures in the deep biosphere of North Sea oil-wells. (external link)
• Linn Merethe Brekke Olsen; Tina Kutti; Håkon Dahle et al. (2019). Biogeochemical processes in submarine mine tailings and the impact on benthic fauna.. (external link)
• Håkon Dahle; Ingeborg Elisabet Økland; Rolf B. Pedersen et al. (2013). Thermodynamic constraints on the microbial ecology and biogeochemical cycling in deep-sea hydrothermal systems. (external link)
• Marius Rydningen Saltvedt; Haina Wang; Håkon Dahle et al. (2023). PERSISTENT VIRUS PRODUCTION BY PHYTOPLANKTON. (external link)
• Haina Wang; Marius Rydningen Saltvedt; Romain Blanc-Mathieu et al. (2022). Genomes of two giant viruses and their capacity in the infection cycles. (external link)
• Ole Christian Bjørgo; Torleiv Lien; Marit Madsen et al. (2000). Thermosipho strain TBA5, a new thermophilic anaerobic bacterium, isolated from a North Sea oil field. (external link)
• Irene Roalkvam; Karine Drønen; Håkon Dahle et al. (2018). Mikrobiell overvåkning av rognkjeksanlegg ved omfattende prøvetaking og detaljert analyseverktøy. (external link)
• Ingeborg Elisabet Økland; Julianne K.S. Gravdal; Astri J.S. Kvassnes et al. (2016). Mobilization of heavy metals in submarine mine tailings. (external link)
• Håkon Dahle; Irene Roalkvam; Steffen Leth Jørgensen et al. (2010). A variety of microbial mats cover the chimney walls of the Loki's Castle hydrothermal field. (external link)
• Karen Cecilie Johannessen; Jan Pieter Vander Roost; Håkon Dahle et al. (2016). Local environmental controls on microbial Fe(II)-oxidation in seafloor hydrothermal deposits. (external link)
• Ida Helene Steen; Håkon Dahle; Irene Roalkvam et al. (2014). Microbial communities associated with low-temperature venting barite chimneys in the Loki´s Castle black smoker field. (external link)
• Ole Christian Bjørgo; Torleiv Lien; Marit Steine Madsen et al. (2000). Thermosipho strain TBA5, a new thermophilic anaerobic bacterium, isolated from a North Sea oil field. (external link)
• Ingunn Hindenes Thorseth; Benjamin Eickmann; Ida Helene Steen et al. (2013). Formation of barite chimneys at low-temperature hydrothermal venting: evidence for complex geobio-interactions. (external link)
• Petra Hribovšek; Emily Maria Denny; Håkon Dahle et al. (2022). Iron oxidizing bacteria producing sheath structures in mats on high temperature chimneys at Fåvne hydrothermal vent field. (external link)

Lecture

• Håkon Dahle; Ingeborg Elisabet Økland; Irene Roalkvam et al. (2014). Towards a framework for analyses of how energy landscapes shape microbial communities in deep-sea hydrothermal systems. (external link)
• Marius Rydningen Saltvedt; Janice Lawrence; Haina Wang et al. (2021). Vital and all over the place – A neglected group of frenemy viruses. (external link)
• Ruth-Anne Sandaa; Marius Rydningen Langvad; Håkon Dahle et al. (2025). The paradox of virus-host coexistence in the ocean. (external link)
• Runar Stokke; Håkon Dahle; Irene Roalkvam et al. (2014). Metagenomic study of a filamentous microbial mat from the Loki´s Castle Vent Field. (external link)

Professional article

• Ole-Kristian Hess-Erga; Paulo Fernandes; Sara Calabrese et al. (2023). Er lav partikkelbelastning i RAS fordelaktig?. (external link)
• Karine Drønen; Irene Roalkvam; Hanne Katrine Nilsen et al. (2018). Biofilterprosesser i endring over tid. (external link)

Doctoral thesis (PhD)

• Jan Pieter Vander Roost; Håkon Dahle (2018). Iron-Oxidizing Microorganisms at the Jan Mayen Hydrothermal Vent Fields. (external link)
• Håkon Dahle; Nils-Kåre Birkeland (2007). Microbiological analyses of produced water from a high-temperature oil formation in the North-Sea. (external link)

Academic literature review

• Arnthór Aevarsson; Anna-Karina Kaczorowska; Björn Thor Adalsteinsson et al. (2021). Going to extremes - A metagenomic journey into the dark matter of life. (external link)
• Frida Lise Daae; Ingeborg Elisabet Økland; Håkon Dahle et al. (2013). Microbial life associated with low-temperature alteration of ultramafic rocks in the Leka ophiolite complex. (external link)

Master’s thesis

• Håkon Dahle (2001). Karakterisering av en bakteriestamme fra ordenen Thermotogales, isolert fra et oljereservoar i Nordsjøen. (external link)

Popular science article

• Ole-Kristian Hess-Erga; Paulo Fernandes; Sara Calabrese et al. (2023). Er lav partikkel­belastning i RAS fordelaktig?. (external link)

Research report

• Ole-Kristian Hess-Erga; Sara Calabrese; Paulo Fernandes et al. (2025). Mikrobiota assosiert med atlantisk laks i overgangen fra ferskvann til sjøvann i RAS: effekt av høy/lav partikkelbelasting og konsekvenser for fiskevelferd og -helse (MikroRAS - 901735). (external link)

See a complete overview of publications in Cristin.

Current projects:

VIRVAR - Uncovering key players for regulation of phytoplankton function and structure: lessons to be learned from algal virus-haptophyte coexistence (NFR)

MONITOR - Adapting monitoring tools for bacterial load detection in closed marine fish farms: for improved fish health and reduced mortalities (NFR)