Blogg post/article:

https://blogg.forskning.no/arktis-arven-etter-nansen-havforskning/a-jobbe-med-det-usynlige---eller-hvorfor-fotografen-ikke-tar-bilder-av-arbeidet-vart/1370083

https://www.studvest.no/forskning-pa-verdens-ende/

Teaching in the following subjects:

• Marine Microbial Ecology (BIO217)
• General Microbiology (BIO101)
• Selected Topics in Microbiology (BIO315)

2018

• Oliver Müller (2018). Forskning på verdens ende. (external link)
• Oliver Müller; Toke Bang‐Andreasen; Richard Allen White III et al. (2018). Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates. (external link)

2023

• Oliver Müller (2023). The unexpected roles of sea-ice ridges for Arctic ecosystems in winter and summer​. (external link)
• Evgenii Salganik; Christian Katlein; Benjamin Lange et al. (2023). Temporal evolution of under-ice meltwater layers and false bottoms and their impact on summer Arctic sea ice mass balance. (external link)
• Christine Gawinski; Malin Hildegard Elisabeth Daase; Raul Primicerio et al. (2023). Are small copepods the winners of an ice free Barents Sea?. (external link)
• Evgenii Salganik; Oliver Müller; Lasse Mork Olsen et al. (2023). Hidden in Plain Sight – New Insights on Arctic Sea-Ice Ridges from the MOSAiC Expedition – an Overview. (external link)
• Oliver Müller; Gunnar Bratbak; Maria Lund Paulsen (2023). Increased organic matter input. Testing bacterial responses in Arctic fjords vs Barents Sea. (external link)
• Pia Steinrücken; Steve Sofsrud Jackson; Oliver Müller et al. (2023). A closer look into the microbiome of microalgal cultures. (external link)
• Christine Gawinski; Malin Hildegard Elisabeth Daase; Raul Primicerio et al. (2023). Are small copepods the winners of an ice free Barents Sea?. (external link)
• Stefan Thiele; Anna Vader; Stuart Thomson et al. (2023). Seasonality of the bacterial and archaeal community composition of the Northern Barents Sea. (external link)
• Benjamin Allen Lange; Evgenii Salganik; Amy Macfarlane et al. (2023). Snowmelt contribution to Arctic first-year ice ridge mass balance and rapid consolidation during summer melt. (external link)
• Stefan Thiele; Anna Vader; Stuart Thomson et al. (2023). The summer bacterial and archaeal community composition of the northern Barents Sea. (external link)
• Marti Amargant I Arumi; Oliver Müller; Yasemin Vicdan Bodur et al. (2023). Interannual differences in sea ice regime in the north-western Barents Sea cause major changes in summer pelagic production and export mechanisms. (external link)
• Madison M. Smith; Hélène Angot; Emelia J. Chamberlain et al. (2023). Thin and transient meltwater layers and false bottoms in the Arctic sea ice pack - Recent insights on these historically overlooked features. (external link)
• Doreen Kohlbach; Lucie Goraguer; Yasemin V. Bodur et al. (2023). Earlier sea-ice melt extends the oligotrophic summer period in the Barents Sea with low algal biomass and associated low vertical flux. (external link)

2024

• Christine Gawinski; Malin Hildegard Elisabeth Daase; Raul Primicerio et al. (2024). Corrigendum: 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), 11, (1308542), 10.3389/fmars.2024.1308542). (external link)
• Clara J. M. Hoppe; Niels Fuchs; Dirk Notz et al. (2024). Photosynthetic light requirement near the theoretical minimum detected in Arctic microalgae. (external link)
• Mats Granskog; Oliver Müller (2024). A peek beneath the surface of Arctic sea ice. (external link)
• Agneta Fransson; Bodil Annikki Ulla Barbro Bluhm; Doreen Kohlbach et al. (2024). Nansen vs. Amundsen Basin: Constrasting physico-chemical properties and biota composition to inform management. (external link)
• Allison A. Fong; Clara J. M. Hoppe; Nicole Aberle-Malzahn et al. (2024). Overview of the MOSAiC expedition: Ecosystem. (external link)

2021

• Pia Steinrücken; Oliver Müller; Steven Jackson et al. (2021). A closer look into the microbiome of microalgal cultures. (external link)
• Oliver Müller; Lena Seuthe; Bernadette Pree et al. (2021). How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments. (external link)

2017

• Bryan Wilson; Oliver Müller; Eva-Lena Nordmann et al. (2017). A year in the microbial life of a changing Arctic Ocean. (external link)
• Bryan Wilson; Oliver Müller; Eva-Lena Nordmann et al. (2017). Changes in marine prokaryote composition with season and depth over an Arctic polar year. (external link)
• Oliver Müller; Lise Øvreås; Gunnar Bratbak et al. (2017). How permafrost organic matter input in an Arctic fjord alters the bacterial community structure. (external link)
• Oliver Müller; Richard Allen White; Janet K. Jansson et al. (2017). Metagenomic insights into changing Arctic permafrost communities. (external link)

2022

• Benjamin Lange; Janina Emilia Osanen; Karley Campbell et al. (2022). Biophysical characterization of summer Arctic sea ice habitats using a ROV- (and under-ice arm)-mounted Underwater Hyperspectral Imager. (external link)
• Lasse Mork Olsen; Oliver Müller; T. Frede Thingstad et al. (2022). How carbon flow is controlled by microbial predator-prey interactions along a productivity gradient in the Barents Sea. (external link)
• Sebastian Gerland; Anette Wold; Amalia Keck Al-Habahbeh et al. (2022). Seasonal Cruise Q1 2021: Cruise Report. (external link)
• Elizabeth Marie Jones; Marit Reigstad; Nadjejda Espinel et al. (2022). JC2-1 Joint cruise part 1 2021 : Cruise Report. (external link)
• Lasse Mork Olsen; Oliver Müller; Gunnar Bratbak et al. (2022). The working of the microbial food web inside sea ice ridges vs. the water column in winter and summer in the Arctic Ocean. (external link)
• Benjamin Lange; Evgenii Salganik; Karley Campbell et al. (2022). Improving bio-physical characterization of Arctic sea ice habitats using an Underwater Hyperspectral Imager.. (external link)
• Benjamin Lange; Evgenii Salganik; Amy Macraflane et al. (2022). Snowmelt contributes to first-year ice ridge consolidation during summer melt. (external link)

2015

• Oliver Müller; Lise Øvreås (2015). Community structure, activity and metabolic processes of microorganisms in permafrost soils from Svalbard. (external link)
• Oliver Müller; Lise Øvreås; Bryan Wilson et al. (2015). Changes in structure, activity and metabolic processes of microorganisms in thawing permafrost soils from Svalbard. (external link)

2026

• Mats A. Granskog; Oliver Müller; Evgenii Salganik et al. (2026). Sea-ice ridges and their role in the Arctic sea-ice ecosystem – new findings from the MOSAiC expedition. (external link)

2025

• Ryota Akino; Daiki Nomura; Alison Webb et al. (2025). Melt Pond Nutrient Dynamics and Their Relationship With Melt Pond Bottom Ice in the Central Arctic Ocean. (external link)
• Bodil Bluhm; Johanna Myrseth Aarflot; Tove M. Gabrielsen et al. (2025). Seasonality and interannual variability of physical, chemical and biological states and processes in the northern Barents Sea and adjacent areas. (external link)

2016

• Oliver Müller; Lise Øvreås; Bo Elberling et al. (2016). From freeze to thaw; implications of changing Arctic soil communities.. (external link)

2019

• Oliver Müller (2019). A microbial glimpse into two large Arctic projects: Nansen Legacy and MOSAiC. (external link)

See a complete overview of publications in 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.