Dr. Jan Karlsson

Professor

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Biography

Jan Karlsson focuses his research on climate change impacts in biogeochemistry and ecology, particularly in boreal and arctic aquatic ecosystems. His expertise includes studying the interactions of abiotic and biotic factors, with an emphasis on distinguishing between direct temperature effects and indirect effects, such as those arising from changes in catchment export of matter. He examines greenhouse gas exchange, specifically carbon dioxide and methane, as well as carbon burial in aquatic systems, assessing their quantitative importance in relation to landscape carbon fluxes. His research also investigates productivity control, resource use among food webs, and the dynamics of bacteria, algae, zoobenthos, zooplankton, and fish in these ecosystems. Karlsson participates in research groups and projects that aim to enhance understanding of arctic river methane emissions, alpine lake productivity in changing climates, long-term carbon storage in Baltic marine sediments, and the influence of climate change on lake ecosystems. He contributes significantly to the field with a focus on boreal-arctic lakes and rivers through comparative studies and experimental approaches that manipulate environmental stressors.

Research Interests

Experience

Professor

2016-01-01 — Present

Umeå University • Umeå, Sweden

Jan Karlsson serves as a Professor at Umeå University, where he leads research initiatives focused on aquatic ecosystems and climate change impacts.

Requirements for Umeå University

Master Program
Requirements
GPA Requirement
Required:2.5
IELTS
Listening
Required:5.5
Reading
Required:5.5
Writing
Required:5.5
Speaking
Required:5.5
Overall
Required:6.5
TOEFL
Writing
Required:20
Total
Required:90
PTE
Overall
Required:62
Prerequisites
Bachelor's degree (180 ECTS) in relevant field At least 90 ECTS in the main subject area
Application Checklist
  • Bachelor's degree certificate
  • Transcripts of records
  • Proof of English proficiency
  • Copy of passport
  • Letter of Motivation (certain programs)
  • CV (certain programs)
Specialization Notes

Requirements are standard for Master's programs across Social Sciences and Humanities at Umeå. English 6 proficiency is the general rule.