Applied Marine Microbiology

The research group in Applied Marine Microbiology study diverse microorganisms in the ocean, such as viruses, bacteria and algae.

We work closely with local industry partners, e.g. within shipping (ballast water), ocean farming, and water treatment technologies. We have access to laboratory facilities, well equipped for microbiology and biotechnology analysis.

Members of the research team are mainly from Institute of Safety, Chemistry and Biomedical laboratory sciences at Faculty of Engineering and Science. Our general knowledge is within microbiology, biotechnology, gene-technology, proteomics and environmental science.

We can also offer supervision of students from bachelor to PhD-level.

Research Projects:


  • Martínez, Eliana R., Mckeown, Dean A., Schroeder, D. C., Thuestad, G., Sjøtun, K., Sandaa, R.-A., Larsen, A., and Hoell, I. A. Phaeoviruses present in cultured and natural kelp species, Saccharina latissima and Laminaria hyperborea (Phaeophyceae, Laminariales), in Norway. Viruses (2023), 15, 2331.

  • Lindivat, Mathilde; Bratbak, Gunnar; Larsen, Aud; Hess-Erga, Ole-Kristian; Hoell, Ingunn Flow cytometric analysis of bacterial protein synthesis: monitoring vitality after water treatment. Frontiers in Microbiology 2021 (1664-302X) Vol. 12 (772651)

  • Kaile, N., Lindivat, M., Elio, J., Thuestad, G., Crowley, Q. G., and Hoell, I. A. Preliminary results from detection of microplastics in liquid samples using flow cytometry. Frontiers in Marine Science, Marine Pollution (2020).

  • Lindivat, M. Larsen, A.,Hess-Erga, O.- K., Bratbak, G., and Hoell, I. A. Biorthogonal non-canonical amino acid tagging (BONCAT) combined with flow cytometry for detection of activity in aquatic microorganisms. Frontiers in Microbiology 11:1929 (2020).

  • Olsen, R. O., Thuestad, G., and Hoell, I. A. Effects on inactivation of Tetraselmis suecica following treatment with KBAL: a UV-based ballast water treatment system with an in-line vacuum drop. Journal of Marine Science and Technology (2020).

  • Olsen, R. O. Lindivat, M. Larsen, A., Thuestad, G., and Hoell, I. A. Incubation in light versus dark affects the viability of UV irradiated Tetraselmis suecica differently. A flow cytometric study. Marine Pollution Bulletin 149 (2019), 110528.

  • Hoell, I. A., Olsen, R. O., Hess-Erga, O., Thuestad, G., and Larsen, A. Application of flow cytometry in ballast water analysis – biological aspects. 8:4 (2017) Management of Biological Invasions, 575-588.

  • Olsen, R. O., Hess-Erga, O., Larsen, A., Hoffmann, F., Thuestad, G., and Hoell, I. A.Dual staining with CFDA-AM and SYTOX Blue in flow cytometry analysis of UV-irradiated Tetraselmis suecica to evaluate vitality. Aquatic Biology. 25 (2016), 39-52.

  • Olsen, R. O., Hoffmann, F., Hess-Erga, O., Larsen, A., Thuestad, G., and Hoell, I. A. Ultraviolet radiation as a ballast water treatment strategy: Inactivation of phytoplankton measured with flow cytometry. Marine Pollution Bulletin 103 (2016) 270-275. 

  • Olsen, R. O., Hess-Erga, O., Larsen, A., Thuestad, G., and Hoell, I. A. Flow cytometric applicability to evaluate UV inactivation of phytoplankton in marine water samples. Marine Pollution Bulletin 96 (2015) 279-285.

  • Hoell, I. A. and Encheva, S. On extracting important correlations in salmon lice based dataset. International Journal of Computer Science Issues, 11 (2014), 2: 1-6.  

Head of Research Group:

bilde av Ingunn Alne Hoell

Ingunn Alne Hoell