Lisa Winberg von Friesen
Postdoctoral FellowI am a postdoctoral researcher in marine ecology, focusing on bacteria and phytoplankton in the ocean - both in the Arctic Ocean and the Baltic Sea. My interests lie in understanding how marine microorganisms drive the biogeochemical cycles of mainly carbon and nitrogen. I also have a background in ecotoxicology and am interested in marine pollution issues.
Teaching
I supervise students in project courses and degree projects.
Research
I research biogeochemical cycles by studying the species composition, biogeographic distribution and activity of mainly small phytoplankton and nitrogen-fixing bacteria (primary production and nitrogen fixation). In my research I mainly use molecular methods (DNA and RNA), stable isotopes (to quantify biological processes), and flow cytometry to investigate how microorganisms are affected by different environmental conditions.
Commissions
Early career researcher in the marine working group of the International Arctic Science Committee (IASC). I am involved in the work with the International Conference on Arctic Research Planning (ICARP IV).
My research groups
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Linnaeus Microbial Observatory (LMO) The Linnaeus Microbial Observatory (LMO) is a time-series station in the Baltic Sea Proper and the core of many research projects in microbial oceanography at…
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Linnaeus University Centre for Ecology and Evolution in Microbial model Systems (EEMiS) EEMiS is a centre for research excellence studying ecological and evolutionary interactions from land to sea.
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Marine phytoplankton ecology and applications (MPEA) Our research team works within the complex and fascinating world of phytoplankton, and studies the role of bio- and chemical interactions among…
My ongoing research projects
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Project: Arctic expedition - Synoptic Arctic Survey-SAS Oden 2021 The expedition Synoptic Arctic Survey will take place onboard the Swedish Icebreaker Oden during August-September 2021. The expedition…
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Project: Carbon export of the smallest phytoplankton This project investigates the role of small phytoplankton in the carbon cycle of the ocean, through quantifying how much their cells aggregate, how…
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Project: Freeze-up in the Greenland Sea – revealing sea-ice algae dynamics in new and multi-year ice in autumn In this project we study the microalgae that live in and under the Arctic sea ice. Which…
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Project: Nutrient uptake by picoplankton in the Arctic Ocean Picoplankton are the smallest photosynthetic organisms in the Arctic Ocean and the base of the food web. To understand how they will be…
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Project: The role of picophytoplankton in the Arctic carbon cycle In this project we study the role of the smallest phytoplankton (picophytoplankton) in the Arctic carbon cycle. How much carbon…
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Projekt: Marine snow - microorganisms and biological processes on sinking particles in the ocean In the ocean, particles composed of aggregated biological and inorganic material are continuously…
Publications
Article in journal (Refereed)
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Winberg von friesen, L., Farnelid, H., Von appen, W., Benavides, M., Grosso, O., et al. (2025). Nitrogen fixation under declining Arctic sea ice. Communications Earth & Environment. 6 (1).
Status: Published -
Zander, S., Winberg von friesen, L., Goncalves-araujo, R., Grosso, O., Benavides, M., et al. (2025). Contrasting Nitrogen Fixation Between Arctic and Atlantic Waters in the Fram Strait. Microbial Ecology. 89 (1).
Status: Published -
Winberg von friesen, L., Laber, C.P., Kristensen, B.H., Nysted, E., Sundbom, M., et al. (2025). From temperate to polar waters : Transition to non-cyanobacterial diazotrophy upon entering the Atlantic gateway of the Arctic Ocean. Limnology and Oceanography. 70 (10). 2793-3102.
Status: Published -
Winberg von friesen, L., Loscher, C.R., Bertilsson, S., Farnelid, H., Snoeijs-leijonmalm, P., et al. (2025). Nitrogen Fixation Potential in Bathypelagic Sediment of the Ice-Covered Arctic Ocean Revealed Through Long-Term Stable Isotope Incubations. Environmental Microbiology Reports. 17 (5).
Status: Published