Oliver Müller
Researcher, Postdoctoral position in marine microbiology
- E-mailoliver.muller@uib.no
- Visitor AddressThormøhlens gate 53 A/B5006 Bergen
- Postal AddressPostboks 78035020 Bergen
Academic article
- (2024). Response of the copepod community to interannual differences in sea-ice cover and water masses in the northern Barents Sea. Frontiers in Marine Science.
- (2024). Biotic transformation of methylmercury at the onset of the Arctic spring bloom. Progress in Oceanography.
- (2023). The summer bacterial and archaeal community composition of the northern Barents Sea. Progress in Oceanography. 1-9.
- (2023). Temporal evolution of under-ice meltwater layers and false bottoms and their impact on summer Arctic sea ice mass balance. Elementa: Science of the Anthropocene. 19 pages.
- (2023). Snowmelt contribution to Arctic first-year ice ridge mass balance and rapid consolidation during summer melt. Elementa: Science of the Anthropocene. 14 pages.
- (2023). Seasonality of the bacterial and archaeal community composition of the Northern Barents Sea. Frontiers in Microbiology. 14 pages.
- (2023). Interannual differences in sea ice regime in the north-western Barents Sea cause major changes in summer pelagic production and export mechanisms. Progress in Oceanography. 22 pages.
- (2023). Insect frass as a fertilizer for the cultivation of protein-rich Chlorella vulgaris. Bioresource Technology Reports. 10 pages.
- (2023). Glacial meltwater and seasonality influence community composition of diazotrophs in Arctic coastal and open waters. FEMS Microbiology Ecology.
- (2023). Earlier sea-ice melt extends the oligotrophic summer period in the Barents Sea with low algal biomass and associated low vertical flux. Progress in Oceanography. 28 pages.
- (2023). A closer look into the microbiome of microalgal cultures. Frontiers in Microbiology. 13 pages.
- (2022). Multiomics in the central Arctic Ocean for benchmarking biodiversity change. PLoS Biology. 6 pages.
- (2021). How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments. Microorganisms. 1-21.
- (2020). Glacial microbiota are hydrologically connected and temporally variable. Environmental Microbiology. 3172-3187.
- (2018). Spatiotemporal dynamics of ammonia-oxidizing Thaumarchaeota in Distinct Arctic water masses. Frontiers in Microbiology. 13 pages.
- (2018). Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates. Environmental Microbiology. 4328-4342.
- (2018). Biological transformation of Arctic dissolved organic matter in a NE Greenland fjord. Limnology and Oceanography. 1014-1033.
- (2018). Bacterial response to permafrost derived organic matter input in an Arctic fjord. Frontiers in Marine Science. 1-12.
- (2017). Changes in marine prokaryote composition with season and depth over an Arctic polar year. Frontiers in Marine Science.
- (2017). Carbon bioavailability in a high Arctic fjord influenced by glacial meltwater, NE Greenland. Frontiers in Marine Science.
- (2016). Synechococcus in the Atlantic Gateway to the Arctic Ocean. Frontiers in Marine Science.
Report
- (2022). Seasonal Cruise Q3: Cruise Report . 27. 27. .
- (2022). Seasonal Cruise Q1 2021: Cruise Report . 29. 29. .
- (2022). JC2-1 Joint cruise part 1 2021 : Cruise Report. 35. 35. .
Lecture
- (2017). A year in the microbial life of a changing Arctic Ocean.
- (2016). From freeze to thaw; implications of changing Arctic soil communities. .
- (2015). Community structure, activity and metabolic processes of microorganisms in permafrost soils from Svalbard .
Academic lecture
- (2024). Nansen vs. Amundsen Basin: Constrasting physico-chemical properties and biota composition to inform management.
- (2023). The unexpected roles of sea-ice ridges for Arctic ecosystems in winter and summer.
- (2023). Ranges of Annual Production in the Barents Sea along Environmental Gradients.
- (2023). Microbial Communities in the Future Central Arctic Ocean – What Can We Learn From Present Observations and What’s Next? .
- (2023). Insect frass as a fertilizer for cultivation of protein-rich Chlorella vulgaris .
- (2023). Increased organic matter input. Testing bacterial responses in Arctic fjords vs Barents Sea.
- (2023). Increased DOM lability and depletion of the POM inventory during winter in an Arctic fjord (Ramfjord, Tromsø).
- (2023). Hidden in Plain Sight – New Insights on Arctic Sea-Ice Ridges from the MOSAiC Expedition – an Overview.
- (2023). Are small copepods the winners of an ice free Barents Sea? .
- (2022). Snowmelt contributes to first-year ice ridge consolidation during summer melt.
- (2022). Biophysical characterization of summer Arctic sea ice habitats using a ROV- (and under-ice arm)-mounted Underwater Hyperspectral Imager.
- (2022). ARCTIC SEA ICE RIDGES – DYNAMIC HOTSPOTS FOR MICROBIAL LIFE.
- (2022). A closer look into the microbiome of microalgal cultures.
- (2021). A closer look into the microbiome of microalgal cultures .
- (2019). A microbial glimpse into two large Arctic projects: Nansen Legacy and MOSAiC.
- (2017). Synechococcus in the Arctic Ocean.
- (2017). Metagenomic insights into changing Arctic permafrost communities.
Reader opinion piece
- (2018). Forskning på verdens ende. Studvest.
Popular scientific article
- (2024). A peek beneath the surface of Arctic sea ice. EU Research. 38-39.
- (2021). Small pieces and large pictures in Arctic marine science. sciencenorway.no.
- (2019). Å jobbe med det usynlige - eller hvorfor fotografen ikke tar bilder av arbeidet vårt. Forskning.no.
Doctoral dissertation
- (2018). Implications of a changing Arctic on microbial communities. Following the effects of thawing permafrost from land to sea.
Poster
- (2023). Lower trophic level carbon fluxes in two summers of contrasting ice conditions.
- (2023). Are particle fluxes below pressure ridges greater than below first-year ice in the central Arctic Ocean winter and summer?
- (2023). Are small copepods the winners of an ice free Barents Sea?
- (2022). The working of the microbial food web inside sea ice ridges vs. the water column in winter and summer in the Arctic Ocean.
- (2022). Improving bio-physical characterization of Arctic sea ice habitats using an Underwater Hyperspectral Imager. .
- (2022). How carbon flow is controlled by microbial predator-prey interactions along a productivity gradient in the Barents Sea.
- (2022). Dynamics of diazotrophic community composition in the Arctic Ocean.
- (2020). In vitro optimization of a quantitative molecular assay for detection of extracellular DNA (eDNA) from Atlantic salmon (Salmo salar L. ).
- (2019). Biological drivers of bacterial communities in the Arctic water inflow region .
- (2017). How permafrost organic matter input in an Arctic fjord alters the bacterial community structure.
- (2016). A year in the microbial life of a changing Arctic Ocean.
- (2015). Changes in structure, activity and metabolic processes of microorganisms in thawing permafrost soils from Svalbard.
Academic literature review
- (2023). Thin and transient meltwater layers and false bottoms in the Arctic sea ice pack - Recent insights on these historically overlooked features. Elementa: Science of the Anthropocene. 41 pages.
Website (informational material)
- (2020). A single litre of seawater contains billions of bacteria .
More information in national current research information system (CRIStin)
Articles in peer-reviewed journals:
- Müller O, Wilson B, Paulsen ML, Rumińska A, Armo HR, Bratbak G, Øvreås L (2018). Spatiotemporal dynamics of ammonia-oxidizing Thaumarchaeota in distinct Arctic water masses. Front. Microbiol. 9:24. doi: 10.3389/fmicb.2018.00024
- Müller O, Bang-Andreasen T, White III RA, Elberling B, Taş N, Kneafsey T, Jansson JK, Øvreås L (2018). Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates. Environ. Microbiol. doi:10.1111/1462-2920.14348.
- Müller O, Seuthe L, Bratbak G, Paulsen ML (2018) Bacterial response to permafrost derived organic matter input in an Arctic fjord. Front. Mar. Sci. 5. doi:10.3389/fmars.2018.00263.
- Paulsen ML, Müller O, Larsen A, Møller EF, Sejr MK, Middelboe M, and Stedmon CA (2018). Biological transformation of Arctic dissolved organic matter in a NE Greenland fjord. Limnol. Oceanogr.10.1002/lno.11091
- Wilson B, Müller O, Nordmann EL, Seuthe L, Bratbak G and Øvreås L (2017). Changes in marine prokaryote composition with season and depth over an Arctic polar year. Front. Mar. Sci. 4:95. doi: 10.3389/fmars.2017.00095
- Paulsen ML, Nielsen SEB, Müller O, Møller EF, Stedmon CA, Juul-Pedersen T, Markager S, Sejr MK, Delgado Huertas A, Larsen A, Middelboe M. (2017) Carbon Bioavailability in a High Arctic Fjord Influenced by Glacial Meltwater, NE Greenland. Front. Mar. Sci. 4: 176. doi:10.3389/fmars.2017.00176.
- Paulsen M L, Doré H, Garczarek L, Seuthe L, Müller O, Sandaa RA, Bratbak G, and Larsen A (2016). Synechococcus in the Atlantic Gateway to the Arctic Ocean. Front. Mar. Sci. 3: 191. doi: 10.3389/fmars.2016.00191
- Harig L, Beinecke F, Oltmanns J, Muth J, Müller O, Rüping B, Twyman R, Fischer R, Prüfer D and Noll G (2012). Proteins from the FLOWERING LOCUS T-like subclade of the PEBP family act antagonistically to regulate floral initiation in tobacco. The Plant Journal, Volume 72, Issue 6, pages 908–921, December 2012, doi: 10.1111/j.1365-313X.2012.05125.x.
PhD thesis:
- Müller O (2018) Implications of a changing Arctic on microbial communities: Following the effects of thawing permafrost from land to sea (http://bora.uib.no/handle/1956/18525)
Arven etter Nansen - The Nansen Legacy (https://arvenetternansen.com)
RF3 - The living Barents Sea
The knowledge of the structure and function of the ecosystem of the northern Barents Sea and adjacent slope to the central basin is strikingly unequal compared to the regular surveyed southern Barents Sea. Yet, the most radical changes in the physical environment are observed in the northern parts of the Barents Sea, where sea ice retreat and increasing water temperatures are reshaping the ecosystem.
Hypothesis: The ecosystems of the northern (Arctic-influenced) Barents Sea and adjacent slope and basin areas function fundamentally differently from the much better understood southern (Atlantic-influenced) region.
The work package The living Barents Sea investigates how organisms in the northern Barents Sea and adjacent slope respond to current and changing environmental conditions on the species and community levels by identifying characteristic communities, by delineating the relevant environmental forcing factors that structure these communities across seasons and habitats. Estimating the production and rate-limiting factors of these organisms, as well as entangling their detailed trophic linkages, is yet another focus of this work package. More concretely, the work package addresses the following tasks:
- Characterize biological communities in sympagic, pelagic and benthic realms in the seasonal ice zone of the northern Barents Sea and adjacent slope of the Arctic Basin in terms of biodiversity, abundance, biomass and distribution patterns in relation to environmental forcing, in particular sea ice
- Investigate the timing of critical biological processes including primary and secondary production, phenology of life cycles, and related processes and test how changing conditions may affect these seasonal patterns across several trophic levels
- Characterize the total annual production from microbes to fish along latitudinal and environmental gradients, identify production hot spots and how condition-specific variability in life history traits affect these
- Characterize lower trophic level food web structure and links to consumers including top predators, carbon cycling, and biological interactions, and investigate selected regulating factors
Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic
(HAVOC - https://www.npolar.no/en/projects/havoc/)
HAVOC will study the role sea ice ridges play in the thinner ice pack in the Arctic Ocean. While the ice is getting thinner, the thicker parts of the ice cover are most likely to survive summer melt and provide the last habitat for ice-associated flora and fauna. The project will take part in the MOSAiC expedition.
Fields of competence