Jan Karlsson

Contact Information

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Position:

Professor

personbild

Works at:

Ecology and Environmental Sciences

Address:

Umeå universitet
SE-901 87 Umeå
Sverige

Visiting Address:

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

Tel:

+46 90 786 60 02

Mobile Phone:

+46 70 980 28 65

Email:

jan.p.karlsson@umu.seEmail 1

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

jan.karlsson@emg.umu.seEmail 3

Lync:

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

Research

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-

Author

Title

Year sorteringsordning

Fulltext

Creed, Irena F.
Bergström, Ann-Kristin
Trick, Charles G.; et al.

Global change-driven effects on dissolved organic matter composition: Implications for food webs of northern lakes
Global Change Biology, 24(8): 3692-3714

2018

-

Diehl, Sebastian
Thomsson, Gustaf
Kahlert, Maria; et al.

Inverse relationship of epilithic algae and pelagic phosphorus in unproductive lakes: Roles of N-2 fixers and light
Freshwater Biology, 63(7): 662-675

2018

-

Ala-aho, P.
Soulsby, C.
Pokrovsky, O. S.; et al.

Using stable isotopes to assess surface water source dynamics and hydrological connectivity in a high-latitude wetland and permafrost influenced landscape
Journal of Hydrology, 556: 279-293

2018

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Berggren, Martin
Klaus, Marcus
Selvam, Balathandayuthabani Panneer; et al.

Quality transformation of dissolved organic carbon during water transit through lakes: contrasting controls by photochemical and biological processes
Biogeosciences, 15(2): 457-470

2018

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Hamdan, Mohammed
Byström, Pär
Hotchkiss, Erin R.; et al.

Carbon dioxide stimulates lake primary production
Scientific Reports, 8

2018

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Bergström, Ann-Kristin
Karlsson, Jan
Karlsson, Daniel; et al.

Contrasting plankton stoichiometry and nutrient regeneration in northern arctic and boreal lakes
Aquatic Sciences, 80(2)

2018

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Kuhn, McKenzie
Lundin, Erik J
Giesler, Reiner; et al.

Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands
Scientific Reports, 8

2018

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Pokrovsky, Oleg S.
Karlsson, Jan
Giesler, Reiner

Freeze-thaw cycles of Arctic thaw ponds remove colloidal metals and generate low-molecular-weight organic matter
Biogeochemistry, 137(3): 321-336

2018

-

Klaus, Marcus
Bergström, Ann-Kristin
Jonsson, Anders; et al.

Weak response of greenhouse gas emissions to whole lake N enrichment
Limnology and Oceanography, 63: S340-S353

2018

-

Ala-aho, P.
Soulsby, C.
Pokrovsky, O. S.; et al.

Permafrost and lakes control river isotope composition across a boreal Arctic transect in the Western Siberian lowlands
Environmental Research Letters, 13(3): =20-=20

2018

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