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  • E-mailAud.Larsen@uib.no
  • Phone+47 452 81 473
  • Visitor Address
    Thormøhlens gate 53 A/B
  • Postal Address
    Postboks 7803
    5020 Bergen

Marine Microbial Ecology
I contribute to the group’s effort of understanding the structure and function of marine microbial food webs mainly through my research on eukaryotes (especially phytoplankton) and their interactions with virus (phycodnaviridae). For several years I have taken a special interest in the haptophytes, an algal group comprising important bloom formers like the coccolithophorid Emiliania huxleyi, species often found in lower numbers (like many Chrysochromulina species) and toxic members (Prymnesium, Chrysochromulina). My work integrates field and experimental studies (especially mesocosm work) of the lower levels of the marine pelagic community. I am resonsible for the group´s flow cytometers which includes a high speed cell sorting machine (FACS Aria).  I have long term experience in microorganism culturing.

Academic article
  • Show author(s) 2020. The Possession of Coccoliths Fails to Deter Microzooplankton Grazers. Frontiers in Marine Science.
  • Show author(s) 2020. Reproducing the virus-to-copepod link in Arctic mesocosms using host fitness optimization. Limnology and Oceanography.
  • Show author(s) 2020. High CO2 concentration and iron availability determine the metabolic inventory in an Emiliania huxleyi-dominated phytoplankton community. Environmental Microbiology. 3863-3882.
  • Show author(s) 2020. Bioorthogonal Non-canonical Amino Acid Tagging Combined With Flow Cytometry for Determination of Activity in Aquatic Microorganisms. Frontiers in Microbiology. 11 pages.
  • Show author(s) 2019. The potential of sedimentary ancient DNA for reconstructing past sea ice evolution. The ISME Journal.
  • Show author(s) 2019. Incubation in light versus dark affects the vitality of UV-irradiated Tetraselmis suecica differently: A flow cytometric study. Marine Pollution Bulletin. 8 pages.
  • Show author(s) 2018. Seasonality drives microbial community structure, shaping both eukaryotic and prokaryotic host–viral relationships in an Arctic marine ecosystem. Viruses. 1-22.
  • Show author(s) 2018. Seasonal and annual variability in the phytoplankton community of the Raunefjord, west coast of Norway from 2001-2006. Marine Biology Research. 421-435.
  • Show author(s) 2018. Increased CO2 and iron availability effects on carbon assimilation and calcification on the formation of Emiliania huxleyi blooms in a coastal phytoplankton community. Environmental and Experimental Botany. 47-58.
  • Show author(s) 2018. Comparing flow cytometry and microscopy in the quantification of vital aquatic organisms in ballast water. Journal of Marine Engineering & Technology. 10 pages.
  • Show author(s) 2018. Biological transformation of Arctic dissolved organic matter in a NE Greenland fjord. Limnology and Oceanography. 1014-1033.
  • Show author(s) 2018. Bacterial community composition responds to changes in copepod abundance and alters ecosystem function in an Arctic mesocosm study. The ISME Journal. 2694-2705.
  • Show author(s) 2018. Asynchronous Accumulation of Organic Carbon and Nitrogen in the Atlantic Gateway to the Arctic Ocean . Frontiers in Marine Science.
  • Show author(s) 2017. Viruses on the menu: The appendicularian Oikopleura dioica efficiently removes viruses from seawater. Limnology and Oceanography.
  • Show author(s) 2017. Viruses on the menu: The appendicularian Oikopleura dioica efficiently removes viruses from seawater. Limnology and Oceanography. S244-S253.
  • Show author(s) 2017. The response of heterotrophic prokaryote and viral communities to labile organic carbon inputs is controlled by the predator food chain structure. Viruses. 1-15.
  • Show author(s) 2017. Seasonal dynamics of haptophytes and dsDNA algal viruses suggest complex virus-host relationship. Viruses. 18 pages.
  • Show author(s) 2017. Phytoplankton Blooms at Increasing Levels of Atmospheric Carbon Dioxide: Experimental Evidence for Negative Effects on Prymnesiophytes and Positive on Small Picoeukaryotes. Frontiers in Marine Science. 18 pages.
  • Show author(s) 2017. Iron availability modulates the effects of future CO2 levels within the marine planktonic food web. Marine Ecology Progress Series. 17-33.
  • Show author(s) 2017. Emerging interaction patterns in the Emiliania huxleyi-EhV system. Viruses. 1-14.
  • Show author(s) 2017. Dampened copepod-mediated trophic cascades in a microzooplankton-dominated microbial food web: A mesocosm study. Limnology and Oceanography. 1031-1044.
  • Show author(s) 2017. Competitive fitness of a predominant pelagic calcifier impaired by ocean acidification. Nature Geoscience. 19-23.
  • Show author(s) 2017. Carbon bioavailability in a high Arctic fjord influenced by glacial meltwater, NE Greenland. Frontiers in Marine Science.
  • Show author(s) 2016. Ultraviolet radiation as a ballast water treatment strategy: Inactivation of phytoplankton measured with flow cytometry. Marine Pollution Bulletin. 270-275.
  • Show author(s) 2016. Synechococcus in the Atlantic Gateway to the Arctic Ocean. Frontiers in Marine Science.
  • Show author(s) 2016. Ocean acidification reduces transfer of essential biomolecules in a natural plankton community. Scientific Reports. 63-77.
  • Show author(s) 2016. Molecular gut content analysis demonstrates that Calanus grazing on Phaeocystis pouchetii and Skeletonema marinoi is sensitive to bloom phase but not prey density. Marine Ecology Progress Series. 63-77.
  • Show author(s) 2016. Metabarcoding and metabolome analyses of copepod grazing reveal feeding preference and linkage to metabolite classes in dynamic microbial plankton communities. Molecular Ecology. 5585-5602.
  • Show author(s) 2016. Influence of plankton community structure on the sinking velocity of marine aggregates. Global Biogeochemical Cycles. 1145-1165.
  • Show author(s) 2016. Dual staining with CFDA-AM and SYTOX Blue in flow cytometry analysis of UV-irradiated Tetraselmis suecica to evaluate vitality . Aquatic Biology. 39-52.
  • Show author(s) 2015. Underestimation of microzooplankton grazing in dilution experiments due to inhibition of phytoplankton growth. Limnology and Oceanography. 1426-1438.
  • Show author(s) 2015. Seasonal diversity and dynamics of haptophytes in the Skagerrak, Norway, explored by high-throughput sequencing. Molecular Ecology. 3026-3042.
  • Show author(s) 2015. Flow cytometric applicability to evaluate UV inactivation of phytoplankton in marine water samples. Marine Pollution Bulletin. 279-285.
  • Show author(s) 2015. Contrasting response to nutrient manipulation in Arctic mesocosms are reproduced by a minimum microbial food web model. Limnology and Oceanography. 360-374.
  • Show author(s) 2015. Characterisation of three novel giant viruses reveals huge diversity among viruses infecting Prymnesiales (Haptophyta). Virology. 180-188.
  • Show author(s) 2015. A simple adjustment to test reliability of bacterivory rates derived from the dilution method. Limnology and Oceanography : Methods. 114-123.
  • Show author(s) 2014. Virus infection of Haptolina ericina and Phaeocystis pouchetii implicates evolutionary conservation of programmed cell death induction in marine haptophyte-virus interactions. Journal of Plankton Research. 943-955.
  • Show author(s) 2013. Genomic sequence and analysis of EhV-99B1, a new coccolithovirus from the Norwegian fjords. Intervirology. 60-66.
  • Show author(s) 2012. Mg2+ as an indicator of nutritional status in marine bacteria. The ISME Journal. 524-530.
  • Show author(s) 2012. Host-virus dynamics and subcellular controls of cell fate in a natural coccolithophore population. Proceedings of the National Academy of Sciences of the United States of America. 19327-19332.
  • Show author(s) 2011. The plankton community in Norwegian coastal waters-abundance, composition, spatial distribution and diel variation. Continental Shelf Research. 1500-1514.
  • Show author(s) 2010. Effects of small-scale turbulence on lower trophic levels under different nutrient conditions. Journal of Plankton Research. 197-208.
  • Show author(s) 2010. Bacterial community composition in an Arctic phytoplankton mesocosm bloom: the impact of silicate and glucose. Polar Biology. 1557-1565.
  • Show author(s) 2009. Primary production during nutrient-induced blooms at elevated CO2 concentrations. Biogeosciences. 877-885.
  • Show author(s) 2008. Response of marine viral populations to a nutrient induced phytoplankton bloom at different pCO2 levels. Biogeosciences. 523-533.
  • Show author(s) 2008. Phylogenetic analysis of members of the Phycodnaviridae virus family, using amplified fragments of the major capsid protein gene. Applied and Environmental Microbiology. 3048-3057.
  • Show author(s) 2008. P-affinity measurements of specific osmotroph population using cell-sorting flow cytometry. Limnology and Oceanography : Methods. 355-363.
  • Show author(s) 2008. Effects of increased atmospheric CO2 on small and intermediate sized osmotrophs during a nutrient induced phytoplankton bloom. Biogeosciences. 739-748.
  • Show author(s) 2008. Counterintuitive carbon-to-nutrient coupling in an Arctic pelagic ecosystem. Nature. 387-391.
  • Show author(s) 2008. Availability of phosphate for phytoplankton and bacteria and of glucose for bacteria at different pCO(2) levels in a mesocosm study. Biogeosciences. 669-678.
  • Show author(s) 2007. Unexpected consequences of increasing CO2 and ocean acidity on marine production of DMS and CH2ClI: Potential climate impacts. Geophysical Research Letters. 5 pages.
  • Show author(s) 2007. Suseptibility of colonies and colonial cells of Phaeocystis pouchetii (Haptophyta) to viral infection. Aquatic Microbial Ecology. 105-112.
  • Show author(s) 2007. Molecular dynamics of Emiliania huxleyi and cooccurring viruses during two separate mesocosm studies. Applied and Environmental Microbiology. 554-562.
  • Show author(s) 2007. Gaining integrated understanding of Phaeocystis spp. (Prymnesiophyceae) through model-driven laboratory and mesocosm studies. Biogeochemistry. 293-309.
  • Show author(s) 2007. Air-sea fluxes of methanol, acetone, acetaldehyde, isoprene and DMS from a Norwegian fjord following a phytoplankton bloom in a mesocosm experiment. Atmospheric Chemistry and Physics. 739-755.
  • Show author(s) 2006. Variability in microbial population dynamics between similarly perturbed mesocosms. Journal of Plankton Research. 783-791.
  • Show author(s) 2006. Seasonal variations in virus-host populations in Norwegian coastal waters: Focusing on the cyanophage community infecting marine Synechococcus spp. Applied and Environmental Microbiology. 4610-4618.
  • Show author(s) 2006. Plankton development and trophic transfer in seawater enclosures with nutrients and Phaeocystis pouchetii added. Marine Ecology Progress Series. 99-121.
  • Show author(s) 2005. Interactions between algal-bacterial populations and trace metals in fjord surface waters during a nutrient-stimulated summer bloom. Limnology and Oceanography. 1855-1871.
  • Show author(s) 2004. Spring phytoplankton bloom dynamics in Norwegian coastal waters: Microbial community succession and diversity. Limnology and Oceanography. 180-190.
  • Show author(s) 2004. Spring phytoplankton bloom dynamics in Norwegian coastal waters: Microbial community succession and diversity. Limnology and Oceanography. 180-190.
  • Show author(s) 2003. Stable coexistence in marine algal host-virus systems. Marine Ecology Progress Series. 27-35.
  • Show author(s) 2002. Isolation and characterization of a virus that infects Emiliania huxleyi (Haptophyceae). Journal of Phycology. 767-774.
  • Show author(s) 2002. Flow cytometric Analysis of an E. Huxleyi bloom terminated by viral infection. Aquatic Microbial Ecology. 110-124.
  • Show author(s) 2002. Cell cycle dependent virus production in marine phytoplankton. Journal of Phycology. 338-343.
  • Show author(s) 2001. Population dynamics and diversity of phytoplankton, bacteria and viruses in a seawater enclosure. Marine Ecology Progress Series. 47-57.
  • Show author(s) 2001. Microbial population dynamics and diversity during a bloom of the marine coccolithophorid Emiliania huxleyi (Haptophyta). Marine Ecology Progress Series. 39-46.
  • Show author(s) 1999. Prymnesium parvum and P. patelliferum (Haptophyta) - one species (Research Note). Phycologia. 000.
  • Show author(s) 1998. Relative ploidy levels in Prymnesium parvum and P. patelliferum (Haptophyta) analyzed by flow cytometry. Phycologia. 412-424.
  • Show author(s) 1998. Growth rate and toxicity of Prymnesium parvum and Prymnesium patelliferum (Haptophyta) in response to changes in salinity, light and temperature. Sarsia. 409-418.
  • Show author(s) 1997. Inter- and intraspecific genetic variation in twelve Prymnesium (Haptophyta) clones. Journal of Phycology. 1007-1015.
  • Show author(s) 1997. Inter- and intraspecific genetic variation in twelve Prymnesium (Haptophyceae) clones. Journal of Phycology. 1007-1015.
Report
  • Show author(s) 2020. Kriterier for lagring av miljø-DNA prøver og data, herunder henvisning til referansemateriale. Criteria for depositing eDNA samples and data, including vouchered specimens. .
  • Show author(s) 1999. Effektregulering - ferskvannsinnblanding i fjorder og algevekst. 9. 9. .
Lecture
  • Show author(s) 2018. Jell-OH! The effect of gelatinous zooplankton on marine microbial systems.
  • Show author(s) 2013. VIRUSES, CONTROLLING FORCE ON HOST DIVERSITY? -Life in the fast-line,.
  • Show author(s) 2010. Use of flow cytometry in air and marine microbiological research.
Popular scientific lecture
  • Show author(s) 2007. Av og til er en nanometer nok.
Academic lecture
  • Show author(s) 2020. Interactions between the filter-feeding appendicularian Oikopleura dioica and the abundance and fate of marine viruses​.
  • Show author(s) 2019. Mixotrophy and The minimum food web model .
  • Show author(s) 2019. Can sedimentary ancient DNA (sedaDNA) be used for sea ice reconstructions? .
  • Show author(s) 2019. Can sedimentary ancient DNA (sedaDNA) be used for sea ice reconstructions.
  • Show author(s) 2018. Sea Ice Reconstructions Using Ancient DNA.
  • Show author(s) 2018. Ongoing activities with eDNA as a monitoring tool in high-latitude marine ecosystems.
  • Show author(s) 2018. Late Quaternary sea ice reconstructions in the Greenland Sea using sedimentary ancient DNA.
  • Show author(s) 2017. from light to dark and shallow to deep: Metagenomic analysis of total virus assemblages from arctic seawater provides a first glance of season- and depth-driven virus diversity and dynamics.
  • Show author(s) 2017. Synechococcus in the Arctic Ocean.
  • Show author(s) 2017. Protist community structure in Atlantic Arctic through the year as revealed by high throughput sequencing.
  • Show author(s) 2017. Protist community structure in Atlantic Arctic through the year as revealed by high throughput sequencing.
  • Show author(s) 2017. Production and fate of organic carbon and nitrogen within the Atlantic Gateway to the Arctic Ocean.
  • Show author(s) 2017. Microbial Food web structure in a changing Arctic.
  • Show author(s) 2017. Light and depth - main drivers of marine virus diversity and dynamics in the Arctic - Metagenomic analysis of total viral assemblages from surface to the deep .
  • Show author(s) 2016. Role of appendicularians in aquatic viral ecology: particle trapping, ingestion and consequences for the marine microbial food web.
  • Show author(s) 2016. Metabarcoding analysis of copepod grazing reveals feeding preference and link to microbial plankton metabolites.
  • Show author(s) 2016. Development of a semi-automated method for metagenomic characterization of total virus assemblages from seasonal high-latitude seawater samples.
  • Show author(s) 2013. Qualitative and quantitative assessment of copepod feeding on Phaeocystis pouchetii in seawater mesocosms and in situ.
  • Show author(s) 2012. When Si and glucose give neither diatoms nor bacteria. A zooplankton effect in an Arctic ecosystem?
  • Show author(s) 2012. Viruses, a controlling force on prokaryotic diversity?
  • Show author(s) 2012. Two different mesocosm experiments - what did they teach us? Or The zooplankton predator chain as structuring force for the microbial food web dynamics.
  • Show author(s) 2012. CO2 induced shifts in natural phytoplankton community composition and biochemical make-up.
  • Show author(s) 2011. Geographic segregation and mechanisms of genetic evolution between coccolithovirus populations: a genomic study.
  • Show author(s) 2010. Host-viruses interactions in blooming and non-blooming haptophytes.
  • Show author(s) 2009. Live and let die: Molecular methods for studying host-virus interactions using Chrysochromulina ericina and CeV-01B as a model system.
  • Show author(s) 2005. Viral diversity in the marine environment. Effect on the species richness and activity of planktonic organisms.
  • Show author(s) 2005. Are colonies or colonial cells of Phaeocystis pouchetii (prymnesiophyceae) susceptible to virus infection?
  • Show author(s) 2002. Marine phytoplankton viruses - ecology, physiology and host virus interactions.
  • Show author(s) 2002. Marine Phytoplankton Viruses-Ecology, Physiology and Host Virus Interactions.
  • Show author(s) 2000. Population dynamics in the virioplankton community during marine algal blooms.
  • Show author(s) 2000. Persistent virus infection in marine phytoplankton.
  • Show author(s) 2000. Is Virus Production in Marine Algae Cell-cycle Dependent?
  • Show author(s) 2000. Diversity and succession of algae, virus and bacteria in nutrient enriched seawater enclosures.
Masters thesis
  • Show author(s) 2006. Morfologi og celleinnhold av C, N og P hos Chattonella aff. verruculosa ved forskjellige næringsforhold.
Popular scientific article
  • Show author(s) 2017. Nye bakterier beveger seg inn i arktiske farvann. Forskning.no.
Doctoral dissertation
  • Show author(s) 2017. Microbial dynamics in high latitude ecosystems. Responses to mixing, runoff and seasonal variation a rapidly changing environment.
  • Show author(s) 1998. Autecology, toxicity, genetics and life history of Prymnesium parvum and Prymnesium patelliferum (Haptophyta): Is a species separation warranted? -.
Interview
  • Show author(s) 2014. Forskning ved 82 grader nord.
  • Show author(s) 2013. The secrets of the Sea.
  • Show author(s) 2011. Føling med fjæra.
  • Show author(s) 2004. Maneter, virus og bakterier.
Programme participation
  • Show author(s) 2015. De usynlige hjelperne.
Academic chapter/article/Conference paper
  • Show author(s) 2000. Cosmopolitan haptophyte flagellates and their genetic links. 21 pages.
Abstract
  • Show author(s) 2004. Interactions between algal/bacterial populations and trace metals in fjordic surface waters during a nutrient-stimulated diatom bloom. Abstract of Papers of the American Chemical Society. U1106-U1107.
Poster
  • Show author(s) 2019. Using genetic information to understand past Arctic sea ice evolution.
  • Show author(s) 2019. Understanding the microbial food web. A basis for knowledge-based marine management .
  • Show author(s) 2019. Trophic interactions between filter-feeding mesozooplankton and the Emiliania huxleyi virus.
  • Show author(s) 2019. Reconstructing past Arctic sea ice using sedimentary ancient DNA.
  • Show author(s) 2019. Can sedimentary ancient DNA (sedaDNA) be used for sea ice reconstructions?
  • Show author(s) 2019. Biological drivers of bacterial communities in the Arctic water inflow region .
  • Show author(s) 2018. Bacterial Viability and Vitality: Application of Click Chemistry in Flow Cytometry.
  • Show author(s) 2017. How permafrost organic matter input in an Arctic fjord alters the bacterial community structure.
  • Show author(s) 2017. Eat and be eaten at 80N.
  • Show author(s) 2016. Marine viral diversity in the Arctic - from surface to deep waters through the long polar night and day.
  • Show author(s) 2011. Virus resistance in marine phytoplankton - a status update.
  • Show author(s) 2011. Virus resistance in eukariotic marine phytoplankton - a status update.
  • Show author(s) 2011. Pelagiske virus i Kongsfjord.
  • Show author(s) 2011. A host-virus chemical arms race at sea: placing subcellular controls of cell fate into an ecological and biogeochemical context.
  • Show author(s) 2010. Host-viruses interactions in blooming and non-blooming haptophytes.
  • Show author(s) 2005. Mg2+ plays an important role in marine bacteria.
  • Show author(s) 2004. Microbial biodiversity control.
  • Show author(s) 2003. Dynamics and succession during the spring bloom in the Norwegian coastal current, with emphasis on the smallest participants.
  • Show author(s) 2001. Dynamics and succession during the spring bloom in Norwegian coastal current, with emphasis on the smallest participants.
  • Show author(s) 2000. Vedvarende virusinfeksjon i marint fytoplankton.
  • Show author(s) 1999. Virus i Havet.
  • Show author(s) 1999. Effects of increasing mesozooplankton concentrations on the phytoplan kton community in mesocosms.
Academic literature review
  • Show author(s) 2018. Simple models combining competition, defence and resource availability have broad implications in pelagic microbial food webs. Ecology Letters. 1440-1452.
  • Show author(s) 2017. Application of flow cytometry in ballast water analysis - biological aspects. Management of Biological Invasions. 575-588.
  • Show author(s) 2010. Stepwise building of plankton functional type (PFT) models: A feasible route to complex models? Progress in Oceanography. 6-15.

More information in national current research information system (CRIStin)

Publication list

1.      Töpper B, Larsen A, Thingstad TF, Thyrhaug R Sandaa R-A. 2010. Bacterial community composition in an Arctic phytoplankton mesocosm bloom: the impact of silicate and glucose Polar Biology DOI 10.1007/s00300-010-0846-4

2.      Thingstad TF, Strand E, Larsen A. 2010. Stepwise building of plankton functional type (PFT) models: A feasible route to complex models. Progress in Oceanography 84: 6-15.

3.      Iversen KR, Primicerio R, Larsen A, Egge JK, Peters F, Guadayol O, Jacobsen A, Havskum H & Marrase C 2010. Effects of small-scale turbulence on lower trophic levels under different nutrient conditions. JOURNAL OF PLANKTON RESEARCH 32: 197-208

4.      Egge JK, Thingstad TF, Larsen A, Engel, A, Wohlers J, Bellerby RGJ, Riebesell U. 2009. Primary production during nutrient-induced blooms at elevated CO2 concentrations. Biogeoscience 6, 877–885.

5.      Larsen A, Tanaka, T., Zubkov, M. V. & Thingstad F.  2008. P-uptake measurements of specific osmotroph populations using cell-sorting flow cytometry. Limnology and Oceanography Methods 6: 355-363.

6.      Thingstad TF,  R.G.J. Bellerby, G Bratbak, KY Børsheim, JK Egge, M Heldal, A Larsen, C Neill, J Nejstgaard, S Norland, R-A Sandaa, EF Skjoldal, T Tanaka, R Thyrhaug, B Töpper. 2008. Counterintuitive food web response to organic carbon enrichment in an arctic pelagic ecosystem.  Nature 455: 387-390  (doi:10.1038/nature 07235).

7.      Larsen JB, Larsen A, Bratbak G, and Sandaa R.-A. 2008. Phylogenetic Analysis of Members of the Phycodnaviridae Virus Family, Using Amplified Fragments of the Major Capsid Protein Gene. Applied and Environmental Microbiology 74: 3048–3057.

8.      Paulino, A.I.,  Egge JK, Larsen A. 2008. Effects of increased atmospheric CO2 on small and intermediate sized osmotrophs during a nutrient induced phytoplankton bloom. Biogeoscience 5, 739–748.

9.      TanakaT, Thingstad TF, Løvdal T, Grossart H-P, Larsen A, Allgaier M, Meyerhöfer M, Schulz KG, Wohlers J, Zöllner E, Riebesell U. 2008. Availability of phosphate for phytoplankton and bacteria and of glucose for bacteria at different pCO2 levels in a mesocosm study. Biogeoscience 5: 669–678.

10.     Larsen, J. B., Larsen, A., Thyrhaug, R., Bratbak, G, and Sandaa, R-A. 2008. Response of marine viral populations to a nutrient induced phytoplankton bloom at different pCO2 levels. Biogeosciences 5: 523-533.

11.  Jacobsen A, Larsen A, Martínez-Martínez J, Frischer ME, Verity PG. 2007. Susceptibility of colonies and colonial cells of Phaeocystis pouchetii (Haptophyta) to viral infection. Aquatic Microbial Ecology. 48: 105-112.

12.  Whipple SJ, BC Patten, PG Verity, ME Frischer, JD Long, JC Nejstgaard, JT Anderson, A Jacobsen, A Larsen, J Martinez-Martinez, and SR Borrett. 2007.  Gaining integrated understanding of Phaeocystis spp. through  model-driven laboratory and mesocosm studies. Biogeochemistry DOI 10.1007/s10533-007-9089-z

13.  Wingenter OW, Haase KB, Zeigler M, Blake DR, Rowland FS, Sive BC, Varner RK, Paulino A, Thyrhaug R, Larsen A, Schulz K, Meyerhöfer M, Riebesel U. 2007. Unexpected consequences of increasing CO2 and ocean acidity onmarine production of DMS and CH2ClI: Potential climate impacts Geophysical Research Letters, 34, L05710, doi:10.1029/2006GL028139 .

14.  Sinha V, Williams J, Meyerhöfer M, Riebesell U, Paulino AI, Larsen A. 2007. Air-sea fluxes of methanol, acetone, acetaldehyde, isoprene and DMS from a Norwegian fjord following a phytoplankton bloom in a mesocosm experiment. Atmos. Chem. Phys. 7: 739-755.

15.  Martínez-Martínez J, Schroeder DC, Larsen A, Bratbak G & Wilson WH. 2007. Molecular dynamics of Emiliania huxleyi and their co-occurring viruses during two separate mesocosm studies. Applied and Environmental Microbiology. 73 (2): 554-562.

16.  Nejstgaard JC, Frischer ME, Verity PG, Anderson JT, Jacobsen A, Zirbel MJ, Larsen A, Martínez-Martínez J, Sazhin AF, Walters T, Bronk DA, Whipple SJ, Borrett SR, Patten BC, Long JD. 2006. Plankton development and trophic transfer in sea water enclosures added nutrients and Phaeocystis pouchetii. Marine  Ecology Progress  Series 321: 99-121.

17.  Sandaa, R-A & Larsen A. 2006. Seasonal variations in viral-host populations in Norwegian coastal waters: Focusing on the cyanophage community infecting marine Synechococcus species. Applied and Environmental Microbiology 72 (7): 4610-4618.

18.  Martínez- Martínez J,  Norland S, Thingstad TF, Schroeder DC, Bratbak G, Wilson WH & A. Larsen. 2006. Variability in microbial population dynamics between similarly perturbed mesocosms. Journal of Plankton Research 28 (8): 783-791.

19.  Muller, FLL, Larsen A, Stedmon CA & Søndergaard M. 2005. Interactions between algal-bacterial populations and trace metals in fjord surface waters during a nutrient-stimulated summer bloom. Limnol. Oceanogr. 50 (6): 1855-1871.

20.  Larsen A, Flaten GA Fonnes, Sandaa RA, Castberg T, Thyrhaug R, Erga SR, Jacquet S & Bratbak G. 2004. Spring phytoplankton bloom dynamics in Norwegian coastal waters: Microbial community succession and diversity. Limnol. Oceanogr. 49: 180-190.

21.  Thyrhaug R, Larsen A, Thingstad TF & Bratbak G. 2003. Stable coexistence in marine algal host-virus systems. Mar. Ecol.  Progr.  Ser. 254: 27-35.

22.  Castberg T, Thyrhaug R, Larsen A, Sandaa R-A, Heldal M, van Etten JL & Bratbak G. 2002. Isolation and characterization of a virus that infects Emiliania huxleyi (Haptophyta). J. Phycol. 38: 767-774.

23.  Thyrhaug T, Larsen A, Brussaard CPD & Bratbak G. 2002. Cell cycle dependent virus production in marine phytoplankton. J. Phycol. 38: 338-343.

24.  Jacquet S, Heldal M, Iglesias-Rodriguez D, Larsen A, Wilson W & Bratbak G. 2002. Flow cytometric analysis of an Emiliania huxleyi bloom terminated by viral infection. Aq. Microb. Ecol.  27:111-124.

25.  Castberg T, Larsen A, Brussaard CPD, Egge J, Heldal M, Paulino A, Sandaa R-A, Thyrhaug R, van Hannen E & Bratbak G. 2001. Microbial population dynamics and diversity during blooms of the marine coccolithophorid Emiliania huxleyi (Haptophyta). Mar. Ecol.  Progr.  Ser. 221: 39-46.

26.  Larsen A, Castberg T, Sandaa R-A, Brussaard CPD, Egge J, Heldal M, Paulino A, Thyrhaug R,  van Hannen E & Bratbak G. 2001. Population dynamics and diversity of phytoplankton, bacteria and virus in a seawater enclosure. Mar. Ecol.  Progr.  Ser. 221: 47-57.

27.  Medlin L K, Lange M, Edvardsen B. & Larsen A. 2000. Cosmopolitan flagellates and their genetic links. In: The Flagellates: Unity, diversity and evolution, Green JC & Leadbeater BSC (ed.), Taylor & Francis Limited, London, p. 288-308.

28.  Larsen A. 1999. Research Note: Prymnesium parvum and P. patelliferum (Haptophyta) – one species. Phycologia 38 (6): 541-543.

29.  Larsen A & Bryant S. 1998. Growth rate and toxicity of Prymnesium parvum and Prymnesium patelliferum (Haptophyta) in response to changes in salinity, light, and temperature.  Sarsia 83: 409-418.

30.  Larsen A & Edvardsen B. 1998. A study of relative ploidy levels in Prymnesium parvum and P. patelliferum (Haptophyta) analysed by flow cytometry. Phycologia 37: 412-424.

31.  Larsen A. & Medlin LK. 1997. Inter - and intraspecific genetic variation in twelve Prymnesium (Haptophyta) clones. J. Phycol. 33: 1007-1015.

32.  Larsen A, Eikrem W & Paasche E. 1993. Growth and toxicity in Prymnesium patelliferum isolated from Norwegian waters. Can. J. Bot. 71: 1357-136.

 

EU- FP7:
MESOAQUA: Integrating Activity - Combination of Collaborative Project and Coordination and Support Action: MESOAQUA (Network of leading MESOcosm facilities to advance the studies of future AQUAtic ecosystems from the Arctic to the Mediterranean, Project manager 2009-2010)

MINOS: Ideas Specific programme – ERC-AdG: MINOS (MIcrobial Network OrganiSation, Responsible for microalgae and molecular methods) 2010-2014

NRC (Norwegian Research Council):
VIPMAP (Viral lysis and programmed cell death in marine phytoplankton), 2009-2011. Project acquisition and originally PI before left for another position )

HAPTODIV (Diversity and dynamics of marine haptophytes, PI Bergen group 2009-2012)

PAME-Nor - DOC turnover in polar microbial food webs

Plankton ecology, microorganism culturing, mesocosm experiments, flow cytometry.

My teaching experience includes microbiology at basic and higher levels (Microbial Ecology, Introductory microbiology course, Algal systematics and ecology, Marine flora and fauna) in addition to student supervision (MSc. PhD).

Research groups