Steffen Leth Jørgensen's picture

Steffen Leth Jørgensen

Researcher , Head of Geochemistry & Geobiology group
  • E-mailSteffen.Jorgensen@uib.no
  • Phone+47 55 58 38 60+47 416 26 055
  • Visitor Address
    Realfagbygget, Allégt. 41
  • Postal Address
    Postboks 7803
    5020 Bergen

Deep biosphere

Microbial ecology 

Uncultured Archaea

geomicrobial processes

Bilt W, Roerdink D, Jørgensen S L, Bakke J, Rea B R, Spagnolo M (2018). "Novel sedimentological fingerprints link shifting depositional processes to Holocene climate transitions in East Greenland. Global and Planetary Change". Global and planetary change doi: https://doi.org/10.1016/j.gloplacha.2018.03.007

Jørgensen S L, and Zhao, R (2016). “Microbial inventory in deeply buried oceanic crust from a young ridge flank” Frontiers in extreme microbiology http://dx.doi.org/10.3389/fmicb.2016.00820.

Spang A, Saw J H, Jørgensen S L, Zaremba-Niedzwiedzka K, Martijn J, Lind A E, van Eijk R. Schleper C, Guy L, and Ettema,T J. (2015) "Complex archaea that bridge the gap between prokaryotes and eukaryotes" Nature 521.  

Jackson M D, Gudmundsson M T, Schiffman P, Bach W, Cappelletti P, Coleman N J, Ivarsson M, Jonasson K, Jørgensen S L, Mearteinsson V, McPhie J, Moore J G, Nielson D, Rhodes J M. Rispoli C, Stefansson A, Turke A, Vanorio T, Weisenberger T B, White J D L, Zirenberg R, and Zimanowski B (2015) “Time-lapse characterization of hydrothermal seawater and microbial interactions with basaltic tephra at Surtsey volcano” Sci. Drill., 20, 51-58.

Edwards K, Bach W, Klaus A, and the Exp. 336 Scientific party (2014). “IODP Expedition 336: initiation of long-term coupled microbiological, geochemical, and hydrological experimentation within the seafloor at North Pond, western flank of the Mid-Atlantic Ridge. Sci. Drill. 17:13–18.

Jørgensen S L, Thorseth I H, Pedersen R B, Baumberger T, and Schleper C (2013). "Quantitative and phylogenetic study of the Deep Sea Archaeal Group in sediments of the Arctic mid-ocean spreading ridge" Frontiers in Microbiology 4(299).

Daae F L, Økland I, Dahle H, Jørgensen S L, Thorseth I H, and Pedersen R B (2013) “Microbial life associated with low‐temperature alteration of ultramafic rocks in the Leka ophiolite complex” Geobiology 11 (4), 318-339.

Lanzen A, Jørgensen SL, Huson D H, Gorfer M, Grindhaug S H, Jonassen I, Øvreås L, and Urich, T (2012) "CREST - Classification Resources of Environmental Sequence Tags" PLOS One 7(11).

Jaeschke A, Jørgensen S L, Bernasconi S M, Pedersen R B, Thorseth I H, and Green G I (2012)  "Microbial diversity of Loki´s Castle black smokers at the Arctic Mid-Ocean Ridge" Geomicrobiology 10(6).

Jørgensen S L, Hannisdal B, Lanzen A, Baumberger T, Flesland K, Fonseca R, Øvreås L, Steen I H, Thorseth, I H, Pedersen R B, and Schleper C (2012) "Correlating Microbial Community Profiles with Geochemical data in highly stratified sediments from the Arctic Mid-Ocean Ridge" PNAS E2846–E2855.

Roalkvam I, Dahle H, Chen Y, Jørgensen S L, Haflidason H, and Steen I H (2012). "Fine-scale community structure analysis of ANME in Nyegga sediments with high and low methane flux" Frontiers in Microbiology (3).         

Lanzén A, Jørgensen S L, Bengtsson M.M, Jonassen I, Ovreås L, and Urich T (2011) "Exploring the composition and diversity of microbial communities at the Jan Mayen hydrothermal vent field using RNA and DNA" FEMS microbiology Ecology 77(3):577-89.

Roalkvam I, Jørgensen S L, Chen Y, Stokke R, Dahle H, Hocking W P, Lanzén A, Haflidason H, and Steen I H (2011) "New insights into stratification of anaerobic methanotrophs in cold seep sediments" FEMS microbiology Ecology 78(2):233-43.

 Bjelland T, Grube M, Hoem S, Jørgensen S L, Daae F L, Thorseth I H, and Ovreas L (2011) "Microbial metacommunities in the lichen-rock habitat” Environmental Microbiology reports 3(4):434-42.

 Reigstad L, Jørgensen S L, and Schleper C (2010) "Diversity and abundance of Korarchaeota in terrestrial hot springs of Iceland and Kamchatka” The ISME journal 4(3):346-356.

 Pedersen R B, Thorseth I H, Lilley M, Barriga F, Baumberger T, Bernasconi-Green G, Flesland K, Fonseca, R and Jørgensen S L (2010) "Discovery of a black smoker vent field and a novel vent fauna at the Arctic Mid-Ocean Ridges" Nature Communications 1:126.

 Reigstad L, Jørgensen S L, Lauritzen S E, Schleper C, and Urich T (2010) "Sulfur oxidizing chemolithotrophic proteobacteria dominate the microbiota in High-Arctic thermal springs on Svalbard" Astrobiology 11(7):665-78.


General molecular techniques, General microbiology, qPCR, microbial phylogeny, GC-MS, uncultured Archaeaprimer design, high-throughput tag profiling. 


  • Unveiling the deep biosphere – from empirical observation to process quantification. Funded by BFS and UiB
  • SUSTAIN. Funded by ICDP, Centre of Geobiolgy and K.g:jebsen Centre fro deep sea research
  • EnterDeep, Funded by RCN. 

Research groups