Analysis and Control of Microbial Systems


Please note that this list is no longer (2019) updated. For our most recent publications, see automatic updates according to Cristin at

Below are publications in journals and books for the period 1997 - 2019 in inverse chronologic order. If you want reprint of any of the papers, contact either Ingrid Bakke or Olav Vadstein.

Heggeset TMB, Ertesvåg H, Liu B, Ellingsen TE, Vadstein O, Aasen IM (2019): Lipid and DHA-production in Aurantiochytrium sp – Responses to nitrogen starvation revealed by analyses of production kinetics and global transcriptomes. Scientific Reports 9:19470. DOI: 10.1038/s41598-019-55902-4.

Rojas-Tirado P, Pedersen PB, Vadstein O, Pedersen L-F (2019): Microbial dynamics in RAS water: Effects of adding acetate as a biodegradable carbon-source. Aquacultural Engineering 84: 106-116. Doi: 10.1016/j.aquaeng.2018.12.010.

Tsagaraki T, Pree B, Leiknes Ø, Larsen A, Bratbak G, Øvreås L, Egge J, Spanek R, Paulsen M L, Olsen Y, Vadstein O, Thingstad T F (2018): Bacterial community composition responds to changes in copepod abundance and alters ecosystem function in an Arctic mesocosm study. ISME Journal 12: 2694–2705. doi:  10.1038/s41396-018-0217-7

Vadstein O, Attramadal KJK, Bakke I, Olsen Y (2018): K-selection as microbial community management strategy: A method for improved viability of larvae in aquaculture. Front. Microbiol. 9: 2730. doi: 10.3389/fmicb.2018.02730

Nordgård, A.S.R., Hennie Bergland, W.H., Bakke, R., Østgaard, K. and Bakke, I (2018): Mapping anaerobic sludge bed community adaptations to manure supernatant in biogas reactors. Scientific Reports 8:15870 | DOI:10.1038/s41598-018-34088-1.

Vadstein, O., Attramadal, K.J.K., Bakke, I., Forberg, T., Olsen, Y., Verdegem, M., Giatsis, C., Skjermo, J., Aasen, I.M., Gatesoupe, F.J., Dierckens, K., Sorgeloos, P. and Bossier, P. (2018): Managing the microbial community of marine fish larvae: a holistic perspective for larviculture. Front. Microbiol. 9:1820. doi: 10.3389/fmicb.2018.01820.

Vestrum, R.I., Attramadal, K.J.K., Winge, P., Li, K., Olsen, Y., Bones, A.M., Vadstein, O. and Bakke, I. (2018): Rearing water treatment induces microbial selection influencing the microbiota and pathogen associated transcripts of cod (Gadus morhua) larvae. Front. Microbiol. 9:851. doi: 10.3389/fmicb.2018.00851

Vestrum, R.I., Luef, B., Forberg, T., Bakke, I. and Vadstein, O. (2018): Investigating fish larvae-microbe interactions in the 21st century: Old questions studied with new tools. In: Yúfera, M. (ed):  Emerging Issues in Fish Larvae Research. Springer, Cham. ISBN 978-3-319-73243-5 / 978-3-319-73244-2.

Moreno-Andrés, J., Ambauen, N., Vadstein, O., Hallé, C., Acevedo-Merino, A., Nebot, E., Meyn, T. (2018): Inactivation of marine heterotrophic bacteria in ballast water by an electrochemical advanced oxidation process. Water Research 140: 377-386. Doi: 10.1016/j.watres.2018.04.061

Rojas-Tirado, P., Pedersen, P.B., Vadstein, O. and Pedersen L.-F. (2018): Changes in microbial water quality in RAS following altered feed loading. Aquacultural Engineering 81, 80-88. Doi: 10.1016/j.aquaeng.2018.03.002.

Forberg, T. and Milligan-Myhre, K. (2017): Chapter 6 - Gnotobiotic fish as models to study host–microbe interactions, In Gnotobiotics, ed. Trenton R. Schoeb and Kathryn A. Eaton, Academic Press, 369-383, ISBN 9780128045619,

Mühlroth A, Winge P, El Assimi A, Jouhet J, Maréchal E, Hohmann-Marriott MF, Vadstein O,  Bones AM. (2017): Mechanisms of phosphorus acquisition and lipid class remodeling under phosphorus limitation in Nannochloropsis. Plant Physiology 175, 1543–1559. Doi: 10.1104/pp.17.00621.

Nordgård, A.S.R., Hennie Bergland, W.H., Vadstein, O., Mironov, V., Bakke, R., Østgaard, K. and Bakke, I (2017): Anaerobic digestion of pig manure supernatant at high ammonia concentrations characterized by high abundances of Methanosaeta and non-euryarchaeotal archaea. Scientific Reports 7: 15077. DOI:10.1038/s41598-017-14527-1.

Gonzalez-Silva, B.M., Rønning A.J., Andreassen, I.K., Bakke, I., Cervantes, F.J., Østgaard, K., Vadstein, O. (2017): Changes in the microbial community of an anammox consortium during adaptation to marine conditions revealed by 454 pyrosequencing. Appl. Microbiol. Biotechnol. 101(12), 5149-5162. doi: 10.1007/s00253-017-8160-5.

Henry, I.A., Kowarz, V. and Østgaard, K. (2017): Aerobic and anoxic biodegradability of amines applied in CO2-capture. Int. J. Greenhouse Gas Control 58, 266–275

Østgaard, K., Kowarz, V., Shuai, W, Henry, I. A., Sposob, M., Haugen H. H. and Bakke, R. (2017): Syringe test screening of microbial gas production activity: Cases denitrification and biogas formation. J. Microbiol. Meth. 132, 119-124. 

Gonzales-Silva, B.M., Jonassen, K.R., Bakke, I., Østgaard, K., and Vadstein, O. (2016): Nitrification at different salinities: Biofilm community composition and physiological plasticity. Wat. Res. 95, 48–58.

Forberg, T., Sjulstad, E.B., Bakke, I., Olsen, Y., Hagiwara, A., Sakakura, Y. and Vadstein, O. (2016): Correlation between microbiota and growth in Mangrove Killifish (Kryptolebias marmoratus) and Atlantic cod (Gadus morhua). Scientific Reports 6,  doi:10.1038/srep21192.

Henry, I.A., Einbu, A., Svendsen, H.F., Bakke, I. and Østgaard, K. (2016): Inhibition factors in biofilm N removal systems treating wastes generated by amine based CO2 capture. Int. J. Greenhouse Gas Control 45, 200–206.

Nordgård, A. S. R, Bergland, W. H., Bakke, R., Vadstein, O., Østgaard, K. and Bakke, I. (2015): Microbial community dynamics and biogas production from manure fractions in sludge bed anaerobic digestion. J. Appl. Microbiol. 119, 1573--1583.

Chauton, M. S., Skolem, L. M. B., Olsen, L. M., Vullum, P. E., Walmsley, J. and Vadstein, O. (2015): Titanium uptake and incorporation into silica nanostructures by the diatom Pinnularia sp. (Bacillariophyceae). J. Appl. Phycol. 27:777–786. DOI 10.1007/s10811-014-0373-8.

Luef, B., Frischkorn, K. R., Wrighton, K. C., Holman, H.-Y. N., Birarda, G., Thomas, B. C., Singh, A., Williams, K. H., Siegerist, C. E., Tringe, S. G., Downing, K. H., Comolli, L. R. and  Banfield, J. F. (2015): Diverse uncultivated ultra-small bacterial cells in groundwater. Nature Comm. 6, Article no.: 6372. doi:10.1038/ncomms7372.

Bergland, W. H., Dinamarca, C., Toradzadegan, M., Nordgård A. S. R., Bakke, I. and Bakke, R. (2015): High rate manure supernatant digestion. Wat. Res. 76, 1-9

Hoel, S., Mehli, L., Bruheim, T. Vadstein, O. and Jakobsen, A. N. (2015). Assessment of microbial quality of retail fresh sushi from selected sources in Norway. J. Food Protect. 78 (5), 997-982.

Skjermo, J., Bakke, I., Dahle, S. W. and Vadstein, O. (2015). Probiotic strains introduced through live feed and rearingwater have low colonizing success in developing Atlantic cod larvae. Aquaculture  438, 17–23.

Rehberg-Haas, S., Meyer, S., Tielmann, M., Lippemeier, S., Vadstein, O., Bakke, I., Kjørsvik, E., Evjemo, J. O. and Schulz, C. (2015). Use of the microalga Pavlova viridis as enrichment product for the feeding of Atlantic cod larvae (Gadus morhua). Aquaculture 438, 141–150.

Hauser, I., Einbu, A., Svendsen, H. F. and Østgaard, K. (2014). Biological treatment of effluents generated by amine based CO2-capture plants. Journal of Energy Challenges and Mechanics  1,(4), 1-5.

Luong, A. D., De Laender, F., Olsen, Y., Vadstein, O., Dewulf, J. and Janssen, C. R. (2014). Inferring time-variable effects of nutrient enrichment on marine ecosystems using inverse modelling and ecological network analysis. Science of the Total Environment 493,  708–718.

De Schryver, P. and Vadstein, O. (2014). PERSPECTIVES - Ecological theory as a foundation to control pathogenic invasion in aquaculture. The ISME Journal 1–9.

Attramadal, K. J. K., Truong, T. M. H., Bakke, I., Skjermo, J., Olsen, Y. and Vadstein, O. (2014). RAS and microbial maturation as tools for K-selection of microbial communities improve survival in cod larvae. Aquaculture  432,  483–490.

Jørgensen, T. E., Bakke, I., Ursvik, A., Andreassen, M., Moum, T. and Johansen, S. D. (2014). An evolutionary preserved intergenic spacer in gadiform mitogenomes generates a long noncoding RNA. BMC Evolutionary Biology 14,(182), 11p.

Chauton, M. S., Skolem, L. M. B., Olsen, L. M., Vullum, P. E., Walmsley, J. and Vadstein, O. (2014). Titanium uptake and incorporation into silica nanostructures by the diatom Pinnularia sp. (Bacillariophyceae). Journal of Applied Phycology, online.

Wang, X., Broch, O. J., Forbord, S., Handå, A., Skjermo, J., Reitan, K. I., Vadstein, O. and Olsen, A. (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  online.

Vik, U., Logares, R., Blaalid, R., Halvorsen, R., Carlsen, T., Bakke, I., Kolstø, A.-B., Økstad, O. A. and Kauserud, H. (2013). Different bacterial communities in ectomycorrhizae and surrounding soil. Scientific Reports 3, (3471), 1-8.

 Wold, P.-A., Holan, A. B., Øie, G., Attramadal, K., Bakke, I., Vadstein, O. and Leiknes, T. O. (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 422–423, 69–77.

Olsen, Y., Reinertsen, H., Sommer, U. and Vadstein, O. (2014). 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 473–474, 262–274.

Chauton, M. S., Olsen, Y. and Vadstein, O. (2013). Biomass production from the microalga Phaeodactylum tricornutum: Nutrient stress and chemical composition in exponential fed-batch cultures. Biomass and Bioenergy  58, 87-94.

Leiknes, Ø., Striberny, A., Tokle, N. E., Olsen, Y., Vadstein, O. and Sommer, U. (2014). Feeding selectivity of Calanus finmarchicus in the Trondheimsfjord. Journal of Sea Research  85, 292–299.

Bakke, I., Skjermo, J., Vo, T. A. and Vadstein, O. (2013). Live feed is not a major determinant of the microbiota associated with cod larvae (Gadus morhua). Environ. Microbiol. Rep.  5, (4), 537–548.

Gatesoupe, F.-J., Covès, D., Ortega, A., Papandroulakis, N., Vadstein, O. and de la Gándara, F. (2013). A spatiotemporal study of bacterial community profiles associated with Atlantic bluefin tuna larvae, Thunnus thynnus L., in three Mediterranean hatcheries. Aquac. Res.  44, 1511–1523.

Olsen, L. M., Ardelan, M. V., Hewes, C. D., Holm-Hansen, O., Reiss, C., Bizsel, N., Sakshaug, E. and Vadstein, O. (2013). Microbial biogeography during austral summer 2007 in the surface waters around the South Shetland Islands, Antarctica. Aquat. Microb. Ecol.  70, 131–140.

Vadstein, O., Bergh, Ø., Gatesoupe, F.-J., Galindo-Villegas, J., Mulero, V., Picchietti, S., Scapigliati, G., Makridis, P., Olsen, Y., Dierckens, K., Defoirdt, T., Boon, N., De Schryver, P. and Bossier, P. (2013). Microbiology and immunology of fish larvae. Reviews in Aquaculture (Suppl. 1)   S1–S25.

Cervantes, F. J., Martínez, C. M., Gonzalez-Estrella, J., Márquez, A. and Arriaga, A. (2013). Kinetics during the redox biotransformation of pollutants mediated by immobilized and soluble humic acids Appl. Microbio.l Biotechnol.  97, 2671–2679.

Blancheton, J. P., Attramadal, K. J. K., Michaud, L., Roque d'Orbcastele, E. and Vadstein, O. (2013). Insight into bacterial population in aquaculture systems and its implication. Aquacult. Eng.  53, 30-39.

Hauser, I., Colaço, A. B., Skjæran, J. A., Einbu, A., Østgaard, K., Svendsen, H. F. and Cervantes, F. J. (2013). Biological N removal from wastes generated from amine-based CO2 capture: Case monoethanolamine. Applied Biochemistry and Biotechnology 169, 1449–1458.

Chauton, M. S., Winge, P., Brembu, T., Vadstein, O. and Bones, A. M. (2013). Gene Regulation of Carbon Fixation, Storage, and Utilization in the Diatom Phaeodactylum tricornutum Acclimated to Light/Dark Cycles 1(C)(W)(OA). Plant Physiology  161, 1-15.

Hauser, I., Einbu, A., Østgaard, K., Svendsen, H. F. and Cervantes, F. J. (2013). Biodegradation of amine waste generated from post-combustion CO2 capture in a moving bed biofilm treatment system. Biotechnol. Lett.  35, 219-224.

Fjellheim, A. J., Playfoot, K. J., Skjermo, J. and Vadstein, O. (2012). Inter-individual variation in the dominant intestinal microbiota of reared Atlantic cod (Gadus morhua L.) larvae. Aquac. Res.  43, 1499–1508.

Martínez, C. M., Alvarez, L. H. and Cervantes, F. J. (2012). Simultaneous biodegradation of phenol and carbon tetrachloride mediated by humic acids. Biodegradation  23, 635–644.

Alvarez, L. H. and Cervantes, F. J. (2012). Assessing the impact of alumina nanoparticles in an anaerobic consortium: methanogenic and humus reducing activity. Appl. Microbio.l Biotechnol.  95, (5), 1323-1331.

Attramadal, K. J. K., Tøndel, B., Salvesen, I., Øie, G., Vadstein, O. and Olsen, Y. (2012). Ceramic clay reduces the load of organic matter and bacteria in marine fish larval culture tanks. Aquacult. Eng.  49, 23– 34.

Forberg, T., Vestrum, R. I., Arukwe, A. and Vadstein, O. (2012). Bacterial composition and activity determines host gene-expression responses in gnotobiotic Atlantic cod (Gadus morhua) larvae. Veterinary Microbiology 157, 420–427.

Hernández-Montoya, V., Alvarez, L. H., Montes-Morán, M. A. and Cervantes, F. J. (2012). Reduction of quinone and non-quinone redox functional groups in different humic acid samples by Geobacter sulfurreducens. Geoderma  183–184, 25–31.

Alvarez, L. H., Jimenez-Bermudez, L. and Cervantes, F. J. (2012). Enhanced dechlorination of carbon tetrachloride by immobilized fulvic acids on alumina particles. Water Air Soil Pollut. 223, 1911-1920.

Olsen, Y., Tokle, N. E. and Vadstein, O. (2012). Hvordan forvalte vannmassene? Om samspillet mellom næringssalt-utslipp og det planktoniske økosystemet. In  Kampen om plass på kysten. Edited by Hersoug, B. and Johnsen, J. P.  Universitetsforlaget. 199-216.

Attramadal, K. J. K., Øie, G., Størseth, T. R., Alver, M. O., Vadstein, O. and Olsen, Y. (2012). The effects of moderate ozonation or high intensity UV-irradiation on the microbial environment in RAS for marine larvae. Aquaculture 330–333, 121–129.

Vadstein, O., Andersen, T., Reinertsen, H. R. and Olsen, Y. (2012). Carbon, nitrogen and phosphorus resource supply and utilisation for coastal planktonic heterotrophic bacteria in a gradient of nutrient loading. Mar. Ecol. Prog. Ser.  447, 55–75.

Attramadal, K. J. K., Salvesen, I., Xue, R., Øie, G., Størseth, T. R., Vadstein, O. and Olsen, Y. (2012). Recirculation as a possible microbial control strategy in the production of marine larvae. Aquacult. Eng.  46, 27– 39.

Cervantes, F. J., Mancilla, A. R., Ríos-del Toro, E. E., Alpuche-Solís, Á. G. and Montoya-Lorenzana, L. (2011). Anaerobic degradation of benzene by enriched consortia with humic acids as terminal electron acceptors. J. Hazard. Mater.  195,  201– 207.

Alvarez, L. H. and Cervantes, F. J. (2011). (Bio)nanotechnologies to enhance environmental quality and energy production. J. Chem. Technol. Biotechnol.  86,  1354–1363.

Olsen, Y., Andersen, T., Gismervik, I. and Vadstein, O. (2011). Marine heterotrophic bacteria, protozoan and metazoan zooplankton may experience protein N or mineral P limitation in coastal waters. Mar. Ecol. Prog. Ser.  436,  81–100. (DOI: 10.3354/meps09258)

Bossier, P., Vadstein, O. and Conceicao, L. (2011). Preface LARVI'09 special issue. Aquaculture 315 (1-2): 1-1  DOI: 10.1016/j.aquaculture.2011.02.039

Forberg, T., Arukwe, A. and Vadstein, O. (2011). A protocol and cultivation system for gnotobiotic Atlantic cod larvae (Gadus morhua L.) as a tool to study host microbe interactions. Aquaculture 315, 222–227. (DOI: 10.1016/j.aquaculture.2011.02.047)

Forberg, T., Arukwe, A. and Vadstein, O. (2011). Two strategies to unravel gene expression responses of host-microbe interactions in cod (Gadus morhua) larvae. Aquaculture Research 42, 664-676. (DOI: 10.1111/j.1365-2109.2010.02708.x)

Bakke, I., De Schyver, P., Bono, N. and Vadstein, O. (2011). PCR-based community structure studies of Bacteria associated with eukaryotic organisms: A simple PCR strategy to avoid co-amplification of eukaryotic DNA. J. Microbiol Methods 84, 349–351. (DOI: 10.1016/j.mimet.2010.12.015)

Vadstein, O. (2011). Large variation in growth-limiting factors for marine heterotrophic bacteria in the Arctic waters of Spitsbergen (78° N). Aquat. Microb. Ecol.  63, 289–297. (DOI: 10.3354/ame01503)

Fjellheim, A.J., Playfoot, K.,  Aasen, I.M., Klinkenberg, G., Skjermo, J. and O. Vadstein. (2010). Selection of candidate probionts by two different screening strategies from Atlantic cod (Gadus morhua L.) larvae. Veterinary Microbiology 144, 153–159. (doi:10.1016/j.vetmic.2009.12.032).

Attramadal, K., Buran, A., Øie, G., Vadstein, O. and Olsen, Y. (2010). Recirculation: Microbial control strategy for intensive marine larviculture. Global aquaculture advocate. 63-65.

Hess-Erga, O.-K., Blomvågnes-Bakke, B. and Vadstein, O. (2010). Recolonization by heterotrophic bacteria after UV irradiation or ozonation of seawater; a simulation of ballast water treatment. Water Research 44, 5439-5449. (doi:10.1016/j.watres.2010.06.059)

Vadstein, O. (2009). Interactions in the planktonic food web. In  Ecosystem Barents Sea. Edited by Sakshaug, E., Johnsen, G. and Kovacs, K.  Tapir Academic Press.  251-266.

Saage, A., Vadstein, O. and Sommer, U. (2009). Feeding behaviour of adult Centropages hamatus (copepoda, calanoida): Functional responses and selective feeding experiments. J. Sea Res. 62, 16-21. (doi:10.1016/j.seares.2009.01.002)

Hess-Erga, O-K., Attramadal, K. and Vadstein, O. (2008). Biotic and abiotic particles protect marine heterotrophic bacteria during UV and ozone disinfection. Aquatic Biol. 4: 147-154. (doi: 10.3354/ab00105)

Evjemo, J.E., Tokle, N., Vadstein, O. and Olsen, Y. (2008). Effect of essential dietary fatty acids egg production and hatching success of the marine copepod Temora longicornis. J. Exp. Mar. Biol. Ecol. 365, 31-37. (

Fjellheim, A., Skjermo, J. and Vadstein, O. (2008). Evaluation of probiotic bacteria for Atlantic cod (Gadhus morhua L.) larvae. World Aquaculture 39,(3),6p.

Robertson, L.J., Forberg, T., Hermansen, L., Gjerde, B.K. and Langeland, N. (2008). Demographics of Giardia infections in Bergen, Norway, subsequent to a waterborne outbreak. Scandinavian Journal of infectious diseases 40,189-192.

Robertson, L.J., Forberg, T and Gjerde, B.K. (2008).Giardia cysts in sewage influent in Bergen, Norway 15-23 months after an extensive waterborne outbreak of giardiasis. Journal of applied microbiology 104,1147-1152.

Saage, A., Altin, D., Vadstein, O. and Sommer, U. (2008). Trophic position of Calanus finmarchicus (Copepoda, Calanoida) in the Trondheim Fjord. J. of Sea Res. 59, 162-172. (

Kostopoulou, V. and Vadstein, O. (2007). Growth performance of the rotifers Brachionus plicatilis, B. 'Nevada' and B. 'Cayman' under different food concentrations. Aquaculture 273, 449-458. (

Skjermo, J., Fjellheim, A., Klinkenberg, G., Aasen, I.M. and Vadstein, O. (2007). Screening for probiotic bacteria for Atlantic cod larvae. Global Aquaculture Advocate 10, (5), 97-98.

Attramadal, K., Olsen, Y., Vadstein, O.  and Salvesen, I. (2007). Clay particles offer alternative water treatmen in marine fish larvae tanks. Global Aquaculture Advocate 10, (4), 82-84.

Fjellheim, A.J., Playfoot, K.J., Skjermo, J. and Vadstein, O. (2007). Vibrionaceae dominates the microflora antagonistic towards Listonella anguillarum in the intestine of cultured Atlantic cod (Gadus morhua L.) larvae. Aquaculture 269, 98-106. (

Olsen, Y., Andersen, T., Gismervik, I. and Vadstein, O. (2007). Protozoan and metazoan zooplankton-mediated carbon flows in nutrient-enriched coastal planktonic communities. Mar. Ecol. Prog. Ser. 331, 67-83

Dooms, S., Papakostas, S., Hoffman, S.,Delbare, D., Dierckens, K., Triantafyllidis, A., De Wolf, T., Vadstein, O., Abatzopoulos, T. J., Sorgeloos, P. and Bossier, P. (2007). Denaturing Gradient Gel Electrophoresis (DGGE) as a tool for the characterisation of Brachionus sp. strains. Aquaculture 262, 29-40.

Hamnes, I.S., Gjerde, B.K., Forberg, T. and Robertson, L.J. ( 2007). Occurrence of Cryptosporidium and Giardia in suckling piglets in Norway. Veterinary parasitology 144, 222-233.

Hamnes, I.S., Gjerde, B.K., Forberg, T. and Robertson, L.J. (2007). Occurrence of Giardia and Cryptosporidium in Norwegian red foxes(Vulpes vulpes). Veterinary parasitology 143, 347-353.

Robertson, L.J., Forberg, T., Hermansen, L., Gjerde, B.K. and Langeland, N. (2007). Molecular characterisation of Giardia isolates from clinical infections following a waterborne outbreak. Journal of infection 55, 79-88.

Robertson, L.J., Forberg, T., Hermansen, L., Hamnes, I.S and Gjerde, B. (2007). Giardia duodenalis cysts isolated from wild moose and reindeer in Norway: Genetic characterization by PCR-RFLP and sequence analysis at two genes. Journal of wildlife diseases 43, 576-585.

Robertson, L., Gjerde, B., Forberg, T., Haugejorde, G. and Kielland, C. (2006). A small outbreak of human cryptosporidiosis associated with calves at a dairy farm in Norway. Scandinavian journal of infectious diseases 38, 810-813.

Robertson, L.J., Forberg, T., Hermansen, L., Gjerde, B.K., Alvsvag, J.O. and Langeland, N. (2006). Cryptosporidium parvum infections in Bergen, Norway, during an extensive outbreak of waterborne giardiasis in autumn and winter 2004. Applied and environmental microbiology 72, 2218-2220.

Rodríguez, F., Chauton, M. S., Johnsen, G.,Andresen, K., Olsen, L. M. and Zapata, M. (2006). Photoacclimation in phytoplankton: Implications for biomass estimates, pigment functionality and chemotaxonomy. Marine Biology 148, 963-971.

Sundt-Hansen, L.E., Olsen, Y., Stibor, H., Heldal, M. and Vadstein, O. (2006). Trophic cascades mediated by copepods, not nutrient supply rate, determine the development of picocyanobacteria. Aquatic Microb Ecol 45, 207-218. (

Stibor, H., Gelzleichter, A., Hantzsche, F., Sommer, U., Striebel, M., Vadstein, O. and Y. Olsen. (2006). Combining dialysis and dilution techniques to estimate gross growth rate of phytoplankton and grazing by micro- and mesozooplankton in situ. Arch. Hydrobiol. 167, 403-419. (DOI: 10.1127/0003-9136/2006/0167-0403)

Papakostas, S., Dooms, S., Triantafyllidis, A., Deloof, D., Kappas, I., Dierckens, K., De Wolf, T., Bossier, P., Vadstein, O., Kui, S., Sorgeloos, P., Abatzopoulos, T.J. (2006). Evaluation of DNA methodologies in identifying Brachionus species used in European hatcheries. Aquaculture 255, 557-564. (

Olsen, Y., Agusti, S.,  Andersen, T. Duarte, C. M., Gasol, P., Gismervik, I., Heiskanen, A-S., Hoell, E., Kuuppo, P., Lignell, R., Reinertsen, H., Sommer, U., Stibor, H., Tamminen, T., Vadstein, O., Vaqué, D. and Vidal, M. (2006). A comparative study of responses in planktonic food web structure and function in contrasting European coastal waters exposed to experimental nutrient addition. Limnol. Oceanogr. 51, 488-501.

Chauton, M. S. and Størseth, T. R. (2006). HR MAS NMR spectroscopy of marine microalgae whole-cell samples, part 1: Classification and metabolite composition from HR MAS 1H NMR spectra and multivariate analysis. pp. 947-951. In "Handbook of Modern Magnetic Resonance" (ed. G. A. Webb, Kluwer Academic Publishers)

Størseth, T. R., Chauton, M. S. and Krane, J. (2006). HR MAS NMR spectroscopy of marine Microalgae whole-cell samples, part 2: 13C and 13C HR MAS NMR analysis used to study fatty acid composition and polysaccharide structure. pp. 953-957. In "Handbook of Modern Magnetic Resonance" (ed. G. A. Webb, Kluwer Academic Publishers)

Skjermo, J., Salvesen, I.,  Fjellheim, A.J., Størseth, T.R. and O. Vadstein. (2005). Probiotic approach for health management in juvenile production. European Aquaculture Society Special Publication 36, 477-479.

Salvesen, I., Attramadal, K. and Vadstein, O. (2005). Interactions between bacteria and suspended particles in intensive larval culture: A comparison between microalgae, algal concentrate and clay. European Aquaculture Society Special Publication 36, 448-450.

Playfoot, K.J., Fjellheim, A.J. and Vadstein, O. (2005). Isolation and characterisation of bacteria from the gut of cod larvae for consideration of probiotic effects. European Aquaculture Society Special Publication 36, 404-407.

Kostopoulou, V. and Vadstein, O. (2005). Growth kinetics in three strains of the Brachionus plicatilis species complex. European Aquaculture Society Special Publication 36, 252-255.

Fjellheim, A.J., Playfoot, K., Aasen, I.M., Klinkenberg, G., Skjermo, J. and Vadstein, O. (2005). Evaluation of potential probiotics for cod larvae: Impact of initial screening strategy. European Aquaculture Society Special Publication 36, 155-156.

Attramadal, K., Xue, R., Salvesen, I., Olsen, Y. and Vadstein, O. (2005). Microbial environment in a flow-through and a recirculating system for intensive rearing of co larvae (Gadus morhua L.). European Aquaculture Society Special Publication 36: 11-14.

Fjellheim, A.J., Playfoot, K., Klinkenberg, G., Skjermo, J. and Vadstein, O. (2005). Characterization of the dominant and the antagonistic bacterial flora of cod (Gadus morhua L.) larvae reared under different conditions. European Aquaculture Society Special Publication 35, 201-202.

Attramadal, K., Salvesen, I., Vadstein, O. and Olsen, Y. (2005). Water quality and microbial environment in a flow through and recirculation system for intensive rearing of cod larvae (Gadus morhua L.). European Aquaculture Society Special Publication 35,111-112.

Olsen, Y., Slagstad, D. and Vadstein, O. (2005). Assimilative carrying capacity: Contribution and impact on the pelagic system. European Aquaculture Society Special Publication 35, 50-52.

Børsheim, K. Y., Vadstein, O., Myklestad, S. M., Reinertsen, H., Kirkvold, S. and Olsen, Y. (2005). Photosynthetic algal production, accumulation and release of phytoplankton storage carbohydrates and bacterial production in a gradient in daily nutrient supply. J. Plankton Res. 27, 743-755.

Sommer, U., Hansen, T., Blum, O., Holzner, N., Vadstein, O. and Stibor, H. (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 142, 274–283.

Chauton, M. S., Størseth, T. R. and Krane, J. (2004). HR MAS DEPT 13C NMR analysis of whole cells of Chaetoceros muelleri (Bacillariophyceae), and comparison with 13C NMR and DEPT 13C NMR analysis of lipophilic extracts. Journal of Phycology 40, 611-618.

Chauton, M. S., Tilstone, G. H., Legrand, C. and Johnsen, G. (2004). Changes in pigmentation, bio-optical characteristics and photophysiology, during phytoflagellate succession in mesocosms. Journal of Plankton Research 26, 315-324.

Papakostas, S., Dooms, S.,  Triantafyllidis, A., Deloof, D., Kappas, I., Dierckens, K., De Wolf, T., Bossier, P., Vadstein, O., Kui, S., Sorgeloos, P. and Abatzopoulos, T.J. (2004). Genetic identification of Brachionus species used in different hatcheries. European Aquaculture Society Special Publication 34, 645-646.

Vadstein, O., Endal, A., Magnussen, O.M. and Y. Olsen. (2004). Zooplankton as a resource in feed production: Possibilities, constrains and challenges. European Aquaculture Society Special Publication 34, 805-806.

Skjermo, J., Størseth, T.R., Fjellheim, A.J., Hansen, A.H., Salvesen, I. and Vadstein, O. (2004). The use of immunostimulants and probiotics for improved microbial management in intensive culture of marine fish. European Aquaculture Society Special Publication 34, 749-750.

Sommer, U., Hansen, T., Stibor, H. and Vadstein, O. (2004). The persistence of phytoplankton responses to Si:N ratios under mesozooplankton grazing: a mesocosm study with Northeast Atlantic plankton. Mar. Ecol. Prog. Ser. 278, 67-78.

Stibor, H., Vadstein, O., Diel, S.,Gelzleichter, A., Hansen, T., Hantzsche, F., Katechakis, A., Lippert, B., Løseth, K., Peters, C., Roederer, W., Sandow, M., Sundt-Hansen, L. and Olsen, Y. (2004). Copepods act as a switch between alternative trophic cascades in marine pelagic food webs. Ecol. Letters 7, 321-328.

Stibor, H., Vadstein, O., Lippert, B., Roederer, W. and Olsen, Y. (2004). Calanoid copepods and nutrient enrichment determine appendicularian (Oikopleura dioica) population dynamics in a mesocosm experiment. Mar. Ecol. Prog. Ser. 270, 209-215.

Vadstein, O.,Stibor, H., Lippert, B., Løseth, K., Roederer, W., Sundt-Hansen, L. and Olsen, Y. (2004). Moderate increase in the biomass of omnivorous copepods may release grazing control of planktonic algae. Mar. Ecol. Prog. Ser. 270, 199-207.

Vadstein, O., Mo, T. A. and Bergh, Ø. (2004). Microbial interactions, prophylaxis and diseases. pp. 28-72. In: E. Moksness, E. Kjørsvik and Y. Olsen. Culture of cold-water marine fish. Blackwell Publishing, Oxford.

Rasmussen, K. and Østgaard, K. (2003). Adhesion of the marine bacterium Pseudomonas sp. NCIMB 2021 to different hydrogel surfaces. Wat. Res. 37, 519-524.

Chauton, M. S., Optun, O. I.,  Bathen, T. F., Volent, Z., Gribbestad, I. S. and Johnsen, G. (2003). HR MAS 1H NMR spectroscopy analysis of whole cells of marine microalgae. Marine Ecology Progress Series 256, 57-62.

Chauton, M. S., Størseth, T. R. and Johnsen, G. (2003). High-resolution magic angle spinning 1H NMR analysis of whole cells of Thalassiosira pseudonana (Bacillariophyceae): Broad range analysis of metabolic composition and nutritional value. Journal of Applied Phycology 15, (6), 533-542.

Strand, S. P.,  Vårum, K. M. and Østgaard, K. (2003). Interactions between chitosans and bacterial suspensions: adsorption and flocculation. Colloids Surfaces B: Biointerfaces 27, 71-81.

Strand, S.P., Nordengen, T. and Østgaard, K. (2002). Efficiency of chitosans applied for flocculation of different bacteria. Wat. Res. 36, 4745-4752.

Vadstein, O., Olsen, L. M., Busch, A., Andersen, T. and Reinertsen, H. R. (2003). Is phosphorus limitation of heterotrophic bacteria and accumulation of degradable DOC a normal phenomenon in phosphorus limited systems? A microcosm study. FEMS Microb. Ecol. 46, 307-316.

Öztürk, M., Vadstein, O. and Sakshaug, E. (2003). The effects of major mechanisms on iron speciation and removal, including enhanced phytoplankton production in mesocosm experiments in a land-locked basin Hopavågen, Norway. Mar. Chem. 84, 3-17.

Gismervik, I., Olsen, Y. and Vadstein, O. (2002). Micro- and mesozooplankton response to enhanced nutrient input – a mesocosm study. Hydrobiologia 484, 75-87.

Rasmussen, K., Willemsen, P. and Østgaard, K. (2002). Barnacle settlement on gel surfaces. Biofouling 177,18 -191.

Vogelsang, C., Schramm, A., Picioreanu, C., Van Looosdrecht, M. C. M. and Østgaard, K. (2002). Microbial community analysis by FISH for mathematical modelling of selective enrichment of gel entrapped nitrifiers obtained from domestic wastewater. Hydrobiologia 469, 165-178.

Øie, G., Reitan, K. I.,Vadstein, O. and Reinertsen, H. (2002). Effect of nutrient supply on growth of blue mussels (Mytilus edulis) in a landlocked bay. Hydrobiologia 484, 99-109.

Reitan, K. I., Øie, G., Vadstein, O. and Reinertsen, H. (2002). Response on scallop culture to enhanced nutrient supply by experimental fertilisation of a landlocked bay. Hydrobiologia 484, 111-120.

Vadstein, O. and Olsen, Y. (2002). Preface: How can we increase the production and harvest of living marine resources in the new millennium? Bridging potentials and environmental constraints. Hydrobiologia 484, vii-ix.

Olsen, L. M., Reinertsen, H. and Vadstein, O. (2002). Can phosphorus limitation inhibit dissolved organic carbon consumption in aquatic microbial food webs? A microcosm study. Microb. Ecol. 43: 353-366.

Makridis, P., Bergh, Ø., Skjermo, J. and Vadstein, O. (2001). Addition of bacteria bioencapsulated in Artemia metanauplii to a rearing system for halibut larvae. Aquaculture International 9, 225-235.

Strand, S.P., Tømmeraas, K., Vårum, K.M. and Østgaard, K. (2001). Electrophoretic light scattering studies of chitosans with different degrees of N-acetylation. Biomacromolecules 2, 1310-1314.

Rasmussen, K. and  Østgaard, K. (2001). Adhesion of the marine fouling diatom Amphora coffeaeformis to non-solid gel surfaces. Biofouling 17, 103-115.

Strand, S.P., Vandvik, M.S., Vårum, K.M. and Østgaard, K. (2001). Screening of chitosans for bacterial flocculation. Biomacromolecules 2, 126-133.

Olsen, Y., Reinertsen, H., Vadstein, O., Andersen, T., Gismervik, I., Duarte, C., Agusti, S., Stibor, H., Sommer, U., Lignell, R., Tamminen, T., Lancelot, C., Rousseou, V., Hoell, E. and Sanderud, K.A. (2001). Comparative analysis of food webs based on flow networks: effects of nutrient supply on structure and function of coastal plankton communities. Continental Shelf Research 21, 2043-2053.

Salvesen, I., Skjermo, J. and Vadstein, O. (2001). Magic solutions to bacterial problems in early life stages: Do they exist? European Aquaculture Society, Special Publication No. 30, pp. 530-531.

Skjermo, J., Rokstad, A.M., Salvesen, I., Skjåk-Bræk, G. and  Vadstein, O. (2001). Immunostimulation as counteraction to bacterial problems in first feeding of marine larvae. European Aquaculture Society, Special Publication No. 30, pp. 568-570.

Reitan, K.I., Vadstein, O., Olsen, Y., Øie, G. and Reinertsen, H. R. (2001). Enhanced Nutrient Supply to Norwegian Coastal Waters: Effects on Growth of Scallops and Blue Mussels. In: C.C.-T. et al. (eds.) Spawning and maturation of aquaculture species, US-Japan Natural Resources Technical report No. 28, pp. 83-84.

Makridis, P., Fjellheim, A., Skjermo, J. and Vadstein, O. (2000). Colonization of the gut of first feeding turbot larvae (Scophthalmus maximuas L.) by bacterial strains added to the water or bioencapsulated in rotifers (Brachionus plicatilis). Aquaculture International 8, 367-380.

Horn, S. J., Aasen, I. M. and Østgaard, K. (2000). Ethanol production from seaweed extract. J. Ind. Microbiol. Biotechnol. 25, 249-254.

Vogelsang, C., Wijffels, R. and Østgaard, K. (2000). Rheological properties and mechanical stability of new gel entrapment systems applied in bioreactors. Biotechnol. Bioeng. 70, 247-253.

Rasmussen, K. and Østgaard, K. (2000). In situ autoflourescence detection of fouling diatoms on different surfaces. Biofouling 15, 275-286.

Horn, S. J., Aasen, I. M. and Østgaard, K. (2000). Production of ethanol from mannitol by Zymobacter palmae. J. Ind. Microbiol. Biotechnol. 24, 51-57.

Vadstein, O. (2000). Strategies for avoiding bacterial infections: Beat them or join them. ASM News 66, 446-447.

Olsen, A.I., Olsen, Y., Attramadal, Y., Christie, K., Birkbeck, T.H., Skjermo, J. and Vadstein, O. (2000). Effects of short term feeding of microalgae on the bacterial flora associated with juvenile Artemia fransiscana. Aquaculture 190, 11-25.

Evjemo, J.O., Vadstein, O. and  Olsen, Y. (2000). Feeding and assimilation kinetics of Artemia franciscana fed Isochrysis galbana (clone T. Iso). Mar. Biol. 136, 1099-1109.

Vadstein, O. (2000). Heterotrophic, planktonic bacteria and cycling of phosphorus: Phosphorus requirements, competitive ability and food web interactions. Adv. Microb. Ecol. 16, 115-168.

Makridis, P., Fjellheim, A., Skjermo,J. and Vadstein, O. (2000). Control of the bacterial flora of Brachionus plicatilis and Artemia franciscana by incubation in bacterial suspensions. Aquaculture 185, 207-218.

Salvesen, I. and Vadstein, O. (2000). Evaluation of plate count methods for determination of maximum specific growth rate in mixed microbial communities, and its possible application for diversity assessment. J. Appl. Microbiol. 88, 442-448.

Makridis, P. and Vadstein, O. (1999). Food size selectivity of Artemia fransiscana at three developmental stages. J. Plankton Res. 21, 2191-2201.

Skjermo, J. and Vadstein, O. (1999). Techniques for microbial control in the intensive rearing of marine larvae. Aquaculture 177, 333-343.

Horn, S. J., Moen, E. and Østgaard, K. (1999). Direct determination of alginate content by near infra-red (NIR) spectroscopy. J. Appl. Phycol. 11, 9-13.

Moen, E., Larsen, B. A., Østgaard, K. and Jensen, A. (1999). Alginate stability during high salt preservation of Ascophyllum nodosum. J. Appl. Phycol. 11, 21-25.

Prochazkova, S., Vaarum, K. M. and Østgaard, K. (1999). Quantitative determination of chitosans by ninhydrin. Carbohydr. Polym. 38, 115-122.

Vogelsang, C., Gollembiewski, K. and Østgaard, K. (1999). Effect of preservation techniques on the regeneration of gel entrapped nitrififying sludge. Wat. Res. 33, 164-168.

Salvesen, I., Skjermo, J. and Vadstein, O. (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 175, 337-350.

Reitan, K.I., Natvik, C. and Vadstein, O. (1998). Drinking rate, uptake of bacteria and micro-algae in turbot larvae. J. Fish. Biol. 53, 1145-1154.

Ringø, E. and Vadstein, O. (1998). Colonization of Vibrio pelagius and Aeromonas caviae in early developing turbot, Scophthalmus maximus (L.) larvae. J. Appl. Microbiol. 84, 227-233.

Vadstein, O. (1998). Evaluation of competitive ability of two heterotrophic planktonic bacteria under phosphorus limitation. Aquatic Microb. Ecol. 14,119-127.

Reinertsen, H., Olsen, Y. and Vadstein, O. (1998). Effects of biomanipulation on planktonic communities in Norwegian lakes. Verh. Internat. Verein. Limnol. 27, 548 (Abstract)

Østgaard, K. (1998). "Miljøbehandling". In: "Genteknologi og industri - fra kjøkkenbenk til fabrikk." Report from Bioteknologinemnda, 12th open meeting 18 March 1998. Bioteknologinemnda, Oslo, pp. 19-27. In Norwegian.

Rasmussen, K., Vogelsang, C. and Østgaard, K. (1997). Biofilm formation on non-solid gel surfaces. In: H. Verachert and W. Verstraete (Eds.): Proc. Int. Symp. Environ. Biotechnol. Oostende April 21-21 1997, Part II. Technological Institute, Antwerpen, pp. 393-396.

Prochazkova, S., Vårum, K. M. and Østgaard, K. (1997). Biofilm formation on chitosan coated solid surfaces. In: H. Verachert and W. Verstraete (Eds.): Proc. Int. Symp. Environ. Biotechnol. Oostende April 21-21 1997, Part II. Technological Institute, Antwerpen, pp. 389-392.

Østgaard, K., Granum, E. and Lie, E. (1997). Phosphate distributions in bio-P sludge: Evaluation of chemical fractionation and 31P-NMR analysis. In: H. Verachert and W. Verstraete (Eds.): Proc. Int. Symp. Environ. Biotechnol. Oostende April 21-21 1997, Part II. Technological Institute, Antwerpen, pp. 397-400.

Rødde, R. S. H., Østgaard, K. and Larsen, B. (1997). Chemical composition of protoplasts of Laminaria digitata (Phaeophyceae). Bot. Mar. 40, 385-290.

Moen, E., Horn, S. and Østgaard, K. (1997). Biological degradation of Ascophyllum nodosum. J. Appl. Phycol. 9, 347-357.

Moen E. and Østgaard, K. (1997). Aerobic digestion of Ca-alginate gels studied as a model system of seaweed tissue degradation. J. Appl. Phycol. 9, 261-267.

Østgaard, K., Christensson, M., Lie, E. and Welander, T. (1997). Anoxic biological phosphorus removal in a full-scale UCT process. Wat. Res. 31, 2719-2726.

Lie, E., Christensson, M., Jönsson, K., Østgaard, K., Johansson, P. and Welander, T. (1997). Carbon and phosphorus transformations in a full-scale enhanced biological phosphorus removal process. Wat. Res. 31, 2693-2698.

Moen, E., Horn, S. and Østgaard, K. (1997). Alginate degradation during anaerobic digestion of Laminaria hyperborea stipes. J. Appl. Phycol. 9, 157-166.

Moen, E., Larsen, B. and Østgaard, K. (1997). Aerobic microbial degradation of alginate in Laminaria hyperborea stipes containing different levels of polyphenols. J. Appl. Phycol. 9, 45-54.

Vogelsang, C., Husby, A. and Østgaard, K. (1997). Functional stability of temperature-compensated nitrification in domestic wastewater treatment obtained with PVA-SbQ/alginate gel entrapment. Wat. Res. 31, 1659-1664.

Rokstad, A.M., Espevik, T., Sjåk-Bræk, G. and Vadstein, O. (1997). Poly mannuronic acid (poly M) and lipopolysaccharide (LPS) induced superoxide anion production in Atlantic salmon (Salmo salar L) macrophages and the dependence of serum. Developments In Biological Standardization 90, 434.

Vadstein, O. (1997). The use of immunostimulation in marine larviculture: Possibilities and challenges. Aquaculture 155, 401-417.

Salvesen, I., Øie, G. and Vadstein, O. (1997). Surface disinfection of Atlantic halibut (Hippoglossus hippoglossus L.) and turbot (Scophthalmus maximus L.) eggs with glutaraldehyde: evaluation of concentrations and contact times. Aquaculture International 5, 249-258.