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Irene Roalkvam

Researcher, Research coordinator at Marineholmen RASLab AS
Stiftelsen industrilaboratorium
  • E-mailIrene.Roalkvam@ilab.no
  • Phone+47 55 58 46 28
  • Visitor Address
    HiB
    Thormøhlensgate 55
    5008 Bergen
    Room 
    434A1
  • Postal Address
    Postboks 7800
    5020 Bergen

Marineholmen RASLab provides research facilities within aquaculture in a new fashion. We have 12 recirculating aquaculture systems (RAS), each including a 1000L fish tank and a biofilter. This will allow unique experimental designs in paralell tanks and paralell RAS, which could result in statistically interesting studies and groundbreaking new knowledge.

Academic article
  • 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. International Journal of Systematic and Evolutionary Microbiology. 975-981.
  • 2019. Microbial Communities in a Flow-Through Fish Farm for Lumpfish (Cyclopterus lumpus L.) During Healthy Rearing Conditions. Frontiers in Microbiology.
  • 2019. Comparison of active biofilm carriers and commercially available inoculum for activation of biofilters in marine recirculating aquaculture systems (RAS). Aquaculture.
  • 2018. Genome analysis of Vallitalea guaymasensis strain L81 isolated from a deep-sea hydrothermal vent system. Microorganisms.
  • 2016. Novel barite chimneys at the Loki´s Castle vent field shed light on key factors shaping microbial communities and functions in hydrothermal systems. Frontiers in Microbiology.
  • 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. International Journal of Systematic and Evolutionary Microbiology. 2671-2677.
  • 2015. Physiological and genomic characterization of Arcobacter anaerophilus IR-1 reveals new metabolic features in Epsilonproteobacteria. Frontiers in Microbiology.
  • 2015. Hypnocyclicus thermotrophus gen. Nov., sp. nov. isolated from a microbial mat in a hydrothermal vent field. International Journal of Systematic and Evolutionary Microbiology. 4521-4525.
  • 2015. Functional interactions among filamentous Epsilonproteobacteria and Bacteroidetes in a deep-sea hydrothermal vent biofilm. Environmental Microbiology. 4063-4077.
  • 2015. Assessment of the carbon monoxide metabolism of the hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus VC-16 by comparative transcriptome analyses. Archaea. 12 pages.
  • 2014. Modeling of heavy nitrate corrosion in anaerobe aquifer injection water biofilm: A case study in a flow rig. Environmental Science and Technology. 8627-8635.
  • 2014. Identification of key components in the energy metabolism of Archaeoglobus fulgidus by transcriptome analyses. Frontiers in Microbiology.
  • 2013. The versatile in situ gene expression of an Epsilonproteobacteria-dominated biofilm from a hydrothermal chimney. Environmental Microbiology Reports. 282-290.
  • 2012. Integrated metagenomic and metaproteomic analyses of an ANME-1-dominated community in marine cold seep sediments. Environmental Microbiology. 1333-1346.
  • 2011. New insight into stratification of anaerobic methanotrophs in cold seep sediments. FEMS Microbiology Ecology. 233-243.
Lecture
  • 2014. Towards a framework for analyses of how energy landscapes shape microbial communities in deep-sea hydrothermal systems.
  • 2014. Metagenomic study of a filamentous microbial mat from the Loki´s Castle Vent Field.
  • 2014. An Arcobacter strain with MIC potential isolated from injection water.
Popular scientific lecture
  • 2018. Mikrobiell overvåkning av rognkjeksanlegg -prøvetaking og analyseverktøy.
  • 2014. Mikrobielle Teknikker.
Academic lecture
  • 2018. Monitoring the main changes in the bacterial community in a RAS biofilter during the first year of operation.
  • 2018. Mikrobiell overvåkning av rognkjeksanlegg ved omfattende prøvetaking og detaljert analyseverktøy.
  • 2018. Mikrobiell overvåkning av rognkjeksanlegg -prøvetaking og analyseverktøy.
  • 2015. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water.
  • 2015. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp.
  • 2014. Microbial communities associated with low-temperature venting barite chimneys in the Loki´s Castle black smoker field.
  • 2014. Microbial communities associated with low-temparture venting barite chimneys in the Loki´s Castle black smoker field.
  • 2012. PROTEOGENOMICS OF A MARINE SEDIMENT COMMUNITY DOMINATED BY ANME-1.
  • 2012. Exploring Metagenomes.
  • 2011. Microbial processes and biomineralisation associated with low-temperature venting and formation of barite chimneys at Loki's Castle hydrothermal field.
  • 2010. Microbial life associated with low-temperature hydrothermal venting and formation of barite chimneys at Loki’s Castle vent field.
  • 2010. A variety of microbial mats cover the chimney walls of the Loki's Castle hydrothermal field.
Doctoral dissertation
  • 2012. Diversity, stratification and in situ metabolism of anaerobic methanotrophic archaea in Nyegga cold seeps.
  • 2012. Diversity, stratification and in situ metabolism of anaerobic methanotrophic archaea in Nyegga cold seeps.
Poster
  • 2019. Microbial activation of biofilters in marine RAS -based on lab experiments and field observations.
  • 2019. Effect of UV water treatment on microbial community structure Studied in two different land based aquaculture systems.
  • 2015. New insights into energy conservation mechanisms in the sulfate respiring archaeon Archaeoglobus fulgidus VC16.
  • 2015. Metagenomics-based enzyme discovery.
  • 2015. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from injection water.
  • 2015. Heavy nitrate corrosion in anarobe aquifer injection water biofilm: Process modeling.
  • 2014. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water.
  • 2014. Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers.
  • 2013. Microbial monitoring of Sub Sea injection water in the North Sea.
  • 2013. Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers.
  • 2013. Better handling of microbial influenced corrosion during operation.
  • 2012. Metatranscriptomic and phylogenetic analysis of bacterial mats growing on chimney surfaces at the Loki´s Castle hydrothermal field.
  • 2012. A combined SEM, isotope, and biomolecular study to unravel the formation of barite chimnneys at the Loki's Castle vent field.
  • 2010. Vertical variations in predominance of Thaumarchaeota and anaerobic methanotrophs in methane seep sediments.
  • 2010. Transcriptome analysis of Arhcaeoglobus fulgidus VC-16 grown on differential substrates.
  • 2010. The sulfate-methane transition zone (SMTZ) in passive and active gas hydrate bearing sediments at Nyegga on the Mid-Norwegian margin: a multidisciplinary geological, geobiological and geochemical study.
  • 2010. Microbial community structure of biomats and chimney walls of the Loki’s Castle hydrothermal field at 73°N.
  • 2010. Detection of methanotrophic archaea in a barite chimney at Loki’s Castle, the Arctic Mid-Ocean Ridge.
  • 2009. Decreased expression of ATP-sulfurylase and APS-reductase in Archaeoglobus fulgidus during respiration of hydrogen with thiosulfate.
  • 2008. The hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus; a proteomics study on the shift between chemoorganoheterotrophic and chemilithoautotrophic growth.
Article in business/trade/industry journal
  • 2018. Biofilterprosesser i endring over tid. Nf xpert : en spesialutgave av Norsk fiskeoppdrett. 46-48.

More information in national current research information system (CRIStin)

Roalkvam, I., Drønen, K. (2016). Two case studies of corrosion from an injection water pipeline in the North Sea: Corrosion control due to operation management and high corrosion potential due to nitrate mitigation, Microbiologically Influenced Corrosion in the Upstream Oil and Gas Industry, editor: Lee, Skovhus and Enning, CRC Press Taylor & Francis, Florida US, ISBN 9781498726566.

Bauer, S.L.M., Roalkvam, I., Steen, I. H., Dahle, H. (2016). Lutibacter profundi sp. nov., isolated from a deep-sea hydrothermal system on the Arctic Mid-Ocean Ridge. International Journal of Systematic and Evolutionary Microbiology, 66:2671-2677.

Steen, I. H., Dahle, H., Stokke, R., Roalkvam, I., Daae, F. L., Rapp, H. T., Pedersen, R. B., Thorseth, I. H. (2016). Novel barite chimneys at the Loki´s Castle Vent Field shed light on key factors shaping microbial communities and functions in hydrothermal systems. Frontiers in Microbiology, doi: 10.3389/fmicb.2015.01510.

Roalkvam, I., Drønen, K., Stokke, R., Daae, F. L., Dahle, H., Steen, I. H. (2015). Physiological and genomic characterization of Arcobacter anaerophilus IR-1 reveals new metabolic features in Epsilonproteobacteria. Frontiers in Microbiology, 6:987.

Roalkvam, I., Bredy, F., Baumberger, T., Pedersen, R. B., Steen, I. H. (2015). Hypnocyclicus thermotrophus gen. nov. sp. nov. isolated from a microbial mat situated in a hydrothermal vent field in the Greenland Sea. International Journal of Systematic and Evolutionary Microbiology, doi:10.1099/ijsem.0.000606.

Hocking, W. P., Roalkvam, I., Magnussen, C., Stokke, R., Steen, I. H. (2015). Assessment of the carbon monoxide metabolism of the hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus VC-16 by comparative transcriptome analyses. Archaea, 2015:12.

Stokke, R., Dahle. H., Roalkvam, I., Wissuwa J., Daae, F. L., Tooming-Klunderud, A., Thorseth, I. H., Pedersen, R. B., Steen, I. H. (2015). Functional interactions among filamentous Epsilonproteobacteria and Bacteroidetes in deep-sea hydrothermal vent biofilm. Environmental Microbiology, doi:10.1111/1462-2920.12970.

Drønen, K., Roalkvam, I., Beeder, J., Torsvik, T., Steen, I. H., Skauge, A., Liengen T. (2014). Modeling of heavy nitrate corrosion in anaerobe aquifer injection water biofilm: a case study in a flow rig. Environmental Science and Technology, 15:8627-35.

Hocking, W. P., Stokke, R., Roalkvam, I., Steen, I. H. (2014). Identification of key components in the energy metabolism of the hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus by transcriptome analyses. Frontiers in Microbiology, 5:95.

Dahle, H., Roalkvam, I., Thorseth, I., Pedersen, R. B., Steen, I. H. (2013). The versatile in situ gene expression of an Epsilonproteobacteria-dominated biofilm from a hydrothermal chimney. Environmental Microbiology Reports, 2:282-90.

Roalkvam, I., Dahle, H., Chen, Y., Jørgensen, S. L., Haflidason, H. & Steen, I. H. (2012). Fine-scale community structure analysis of ANME in Nyegga sediments with high and low methane flux. Frontiers in Extreme Microbiology, 3:216.

Stokke, R., Roalkvam, I., Lanzén, A., Haflidason, H., Steen, I. (2012). Integrated metagenomic and metaproteomic analyses of an ANME-1 dominated community in marine cold-seep sediments. Environmental Microbiology, 13(5):1333-1346.

Roalkvam, I., Jørgensen, S. L., Chen, Y., Stokke, R., Dahle, H., Hocking, W. P., Lanzén, A., Haflidason, H., Steen, I. H. (2011). New insight into stratification of anaerobic methanotrophs in cold seep sediments. FEMS Microbiology Ecology, 78(2):233-43.

2017-: Adapting monitoring tools for bacterial load detection in closed marine fish farms: for improved fish health and reduced mortalities (MONITOR). Funding from Research Council of Norway.

2015-2017: Industrial Applications of Marine Enzymes (INMARE); Innovative screening and expression platforms to discover and use the functional protein diversity from the sea. Funding from the EU Horizon 2020 Program. More info.

2012-2016: Better handling of microbial influenced corrosion during operation. Post. doc project. Fundied by VISTA.

2009-2012: Diversity, stratification and in situ metabolism of anaerobic methanotrophic archaea in Nyegga cold seeps. Ph.D project. Funded by VISTA.

 

Research groups