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Oliver Müllers bilde

Oliver Müller

Forsker, Postdoktor i marin mikrobiologi
  • E-postoliver.muller@uib.no
  • Besøksadresse
    Thormøhlens gate 53 A/B
    5006 Bergen
  • Postadresse
    Postboks 7803
    5020 Bergen

Undervisningsemner:

  • Mikobiell Økologi (BIO217)
  • Organismebiologi - Mikrobiologi (BIO101)
  • Utvalgte emner i mikrobiologi (BIO315)
Vitenskapelig artikkel
  • Vis forfatter(e) (2024). Mellomårlige forskjeller i havisregime i det nordvestlige Barentshavet forårsaker store endringer i den pelagiske produksjonen og eksportmekanismene om sommeren. Progress in Oceanography. 22 sider.
  • Vis forfatter(e) (2024). Insect frass as a fertilizer for the cultivation of protein-rich Chlorella vulgaris. Bioresource Technology Reports.
  • Vis forfatter(e) (2024). Biotic transformation of methylmercury at the onset of the Arctic spring bloom. Progress in Oceanography.
  • Vis forfatter(e) (2023). Tidligere havissmelting forlenger den oligotrofe sommerperioden i Barentshavet med lav algebiomasse og vertikal fluks. Progress in Oceanography. 28 sider.
  • Vis forfatter(e) (2023). The summer bacterial and archaeal community composition of the northern Barents Sea. Progress in Oceanography. 1-9.
  • Vis forfatter(e) (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 sider.
  • Vis forfatter(e) (2023). Seasonality of the bacterial and archaeal community composition of the Northern Barents Sea. Frontiers in Microbiology. 14 sider.
  • Vis forfatter(e) (2023). Glacial meltwater and seasonality influence community composition of diazotrophs in Arctic coastal and open waters. FEMS Microbiology Ecology.
  • Vis forfatter(e) (2023). Frysing av smeltevann i skrugarder på sommertid i Polhavet. Elementa: Science of the Anthropocene. 14 sider.
  • Vis forfatter(e) (2023). A closer look into the microbiome of microalgal cultures. Frontiers in Microbiology. 13 sider.
  • Vis forfatter(e) (2022). Multiomics in the central Arctic Ocean for benchmarking biodiversity change. PLoS Biology. 6 sider.
  • Vis forfatter(e) (2021). How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments. Microorganisms. 1-21.
  • Vis forfatter(e) (2020). Glacial microbiota are hydrologically connected and temporally variable. Environmental Microbiology. 3172-3187.
  • Vis forfatter(e) (2018). Spatiotemporal dynamics of ammonia-oxidizing Thaumarchaeota in Distinct Arctic water masses. Frontiers in Microbiology. 13 sider.
  • Vis forfatter(e) (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.
  • Vis forfatter(e) (2018). Biological transformation of Arctic dissolved organic matter in a NE Greenland fjord. Limnology and Oceanography. 1014-1033.
  • Vis forfatter(e) (2018). Bacterial response to permafrost derived organic matter input in an Arctic fjord. Frontiers in Marine Science. 1-12.
  • Vis forfatter(e) (2017). Changes in marine prokaryote composition with season and depth over an Arctic polar year. Frontiers in Marine Science.
  • Vis forfatter(e) (2017). Carbon bioavailability in a high Arctic fjord influenced by glacial meltwater, NE Greenland. Frontiers in Marine Science.
  • Vis forfatter(e) (2016). Synechococcus in the Atlantic Gateway to the Arctic Ocean. Frontiers in Marine Science.
Rapport
  • Vis forfatter(e) (2022). Seasonal Cruise Q3: Cruise Report . 27. 27. .
  • Vis forfatter(e) (2022). Seasonal Cruise Q1 2021: Cruise Report . 29. 29. .
  • Vis forfatter(e) (2022). JC2-1 Joint cruise part 1 2021 : Cruise Report. 35. 35. .
Faglig foredrag
  • Vis forfatter(e) (2017). A year in the microbial life of a changing Arctic Ocean.
  • Vis forfatter(e) (2016). From freeze to thaw; implications of changing Arctic soil communities. .
  • Vis forfatter(e) (2015). Community structure, activity and metabolic processes of microorganisms in permafrost soils from Svalbard .
Vitenskapelig foredrag
  • Vis forfatter(e) (2024). Nansen vs. Amundsen Basin: Constrasting physico-chemical properties and biota composition to inform management.
  • Vis forfatter(e) (2023). The unexpected roles of sea-ice ridges for Arctic ecosystems in winter and summer​.
  • Vis forfatter(e) (2023). Ranges of Annual Production in the Barents Sea along Environmental Gradients.
  • Vis forfatter(e) (2023). Microbial Communities in the Future Central Arctic Ocean – What Can We Learn From Present Observations and What’s Next? .
  • Vis forfatter(e) (2023). Insect frass as a fertilizer for cultivation of protein-rich Chlorella vulgaris .
  • Vis forfatter(e) (2023). Increased organic matter input. Testing bacterial responses in Arctic fjords vs Barents Sea.
  • Vis forfatter(e) (2023). Increased DOM lability and depletion of the POM inventory during winter in an Arctic fjord (Ramfjord, Tromsø).
  • Vis forfatter(e) (2023). Hidden in Plain Sight – New Insights on Arctic Sea-Ice Ridges from the MOSAiC Expedition – an Overview.
  • Vis forfatter(e) (2023). Are small copepods the winners of an ice free Barents Sea? .
  • Vis forfatter(e) (2022). Snowmelt contributes to first-year ice ridge consolidation during summer melt.
  • Vis forfatter(e) (2022). Biophysical characterization of summer Arctic sea ice habitats using a ROV- (and under-ice arm)-mounted Underwater Hyperspectral Imager.
  • Vis forfatter(e) (2022). ARCTIC SEA ICE RIDGES – DYNAMIC HOTSPOTS FOR MICROBIAL LIFE.
  • Vis forfatter(e) (2022). A closer look into the microbiome of microalgal cultures.
  • Vis forfatter(e) (2021). A closer look into the microbiome of microalgal cultures .
  • Vis forfatter(e) (2019). A microbial glimpse into two large Arctic projects: Nansen Legacy and MOSAiC.
  • Vis forfatter(e) (2017). Synechococcus in the Arctic Ocean.
  • Vis forfatter(e) (2017). Metagenomic insights into changing Arctic permafrost communities.
Leserinnlegg
  • Vis forfatter(e) (2018). Forskning på verdens ende. Studvest.
Populærvitenskapelig artikkel
  • Vis forfatter(e) (2021). Small pieces and large pictures in Arctic marine science. sciencenorway.no.
  • Vis forfatter(e) (2019). Å jobbe med det usynlige - eller hvorfor fotografen ikke tar bilder av arbeidet vårt. Forskning.no.
Doktorgradsavhandling
  • Vis forfatter(e) (2018). Implications of a changing Arctic on microbial communities. Following the effects of thawing permafrost from land to sea.
Poster
  • Vis forfatter(e) (2023). Lower trophic level carbon fluxes in two summers of contrasting ice conditions.
  • Vis forfatter(e) (2023). Are particle fluxes below pressure ridges greater than below first-year ice in the central Arctic Ocean winter and summer?
  • Vis forfatter(e) (2023). Are small copepods the winners of an ice free Barents Sea?
  • Vis forfatter(e) (2022). The working of the microbial food web inside sea ice ridges vs. the water column in winter and summer in the Arctic Ocean.
  • Vis forfatter(e) (2022). Improving bio-physical characterization of Arctic sea ice habitats using an Underwater Hyperspectral Imager. .
  • Vis forfatter(e) (2022). How carbon flow is controlled by microbial predator-prey interactions along a productivity gradient in the Barents Sea.
  • Vis forfatter(e) (2022). Dynamics of diazotrophic community composition in the Arctic Ocean.
  • Vis forfatter(e) (2020). In vitro optimization of a quantitative molecular assay for detection of extracellular DNA (eDNA) from Atlantic salmon (Salmo salar L. ).
  • Vis forfatter(e) (2019). Biological drivers of bacterial communities in the Arctic water inflow region .
  • Vis forfatter(e) (2017). How permafrost organic matter input in an Arctic fjord alters the bacterial community structure.
  • Vis forfatter(e) (2016). A year in the microbial life of a changing Arctic Ocean.
  • Vis forfatter(e) (2015). Changes in structure, activity and metabolic processes of microorganisms in thawing permafrost soils from Svalbard.
Vitenskapelig oversiktsartikkel/review
  • Vis forfatter(e) (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 sider.
Nettsider (opplysningsmateriale)
  • Vis forfatter(e) (2020). A single litre of seawater contains billions of bacteria .

Se fullstendig oversikt over publikasjoner i 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:

 

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.

Forskergrupper