Jan Karlsson

Contact Information

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Works at:

Ecology and Environmental Sciences


Umeå universitet
SE-901 87 Umeå

Visiting Address:

KB. H3, Linnaeus väg 6, Umeå, A3.44.21


+46 90 786 60 02

Mobile Phone:

+46 70 980 28 65


jan.p.karlsson@umu.seEmail 1

jan.p.karlsson@emg.umu.seEmail 2

jan.karlsson@emg.umu.seEmail 3


Get in touch via Lync

Web Page:

http://www.emg.umu.se/english/about-the-department/staff/karlsson-jan Web Page
http://www.emg.umu.se/om-institutionen/personal/karlsson-jan Web Page


My research focus on impacts of climate change on the biogeochemistry and ecology of high latitude aquatic ecosystems. The studies integrate abiotic (chemical and physical) and biotic factors and processes with special emphasis on distinguishing between direct (mainly temperature) and indirect (via changes in catchment export of matter) climate impacts and between short and long-term effects. Part of the research study the magnitude and control of greenhouse gas (carbon dioxide, methane) exchange and carbon burial in aquatic systems, and its quantitative importance in comparison with other carbon fluxes in the landscape. Another part of the research study the control of productivity and resources use in food webs, from the base of the food web (bacteria and algae), via intermediate consumers (zoobenthos, zooplankton) to top consumers (fish). The research includes mainly boreal-arctic lakes and streams/rivers and is based on comparative studies along climate and permafrost gradients and experimental studies where different environmental stressors are manipulated.

I am the director of the Climate Impacts Research Centre (CIRC).
Visit the CIRC external homepage.

Publications 2004-



Year sorteringsordning


Tanentzap, Andrew J.
Kielstra, Brian W.
Wilkinson, Grace M.; et al.

Terrestrial support of lake food webs: Synthesis reveals controls over cross-ecosystem resource use
Science Advances, 3(3)



Deininger, Anne
Faithfull, Carolyn L.
Karlsson, Jan; et al.

Pelagic food web response to whole lake N fertilization
Limnology and Oceanography, 62(4): 1498-1511



Hedström, Per
Bystedt, David
Karlsson, Jan; et al.

Brownification increases winter mortality in fish
Oecologia, 183(2): 587-595



Lundin, Erik J
Klaminder, Jonatan
Giesler, Reiner; et al.

Is the subarctic landscape still a carbon sink?: Evidence from a detailed catchment balance
Geophysical Research Letters, 43(5): 1988-1995



Vasconcelos, Francisco Rivera
Diehl, Sebastian
Rodriguez, Patricia; et al.

Asymmetrical competition between aquatic primary producers in a warmer and browner world
Ecology, 97(10): 2580-2592



Abbott, Benjamin W.
Jones, Jeremy B.
Schuur, Edward A. G.; et al.

Biomass offsets little or none of permafrost carbon release from soils, streams, and wildfire: an expert assessment
Environmental Research Letters, 11(3)



Rodriguez, Patricia
Byström, Pär
Geibrink, Erik; et al.

Do warming and humic river runoff alter the metabolic balance of lake ecosystems?
Aquatic Sciences, 78(4): 717-725



Norlin, Linnea
Byström, Pär
Karlsson, Jan; et al.

Climate change will alter amphibian-mediated nutrient pathways: evidence from Rana temporaria tadpoles in experimental ponds
Freshwater Biology, 61(4): 472-485



Karlsson, Jan
Bergström, Ann-Kristin
Byström, Pär; et al.

Terrestrial organic matter input suppresses biomass production in lake ecosystems
Ecology, 96(11): 2870-2876



Seekell, David A.
Lapierre, Jean-Francois
Ask, Jenny; et al.

The influence of dissolved organic carbon on primary production in northern lakes
Limnology and Oceanography, 60(4): 1276-1285



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