Ann-Kristin Bergström

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Ann-Kristin Bergström
(Professor)

Climate Impacts Research Centre
Department of Ecology and Environmental Sciences

Email: ann-kristin.bergstrom@umu.se

Umeå University Profile

ORCID iD: 0000-0001-5102-4289


Research Summary

Special focus within my research lies within studying the importance of organic matter (humic substances) and nutrients (nitrogen and phosphorus) for lake ecosystem productivity and food web structure. My current research projects concerns how global climate change are affecting lake water biogeochemistry, and what possible impacts these biogeochemical changes have on lake productivity and the ecosystem services of northern pristine lakes. We assess how nutrient availability and the N:P stoichiometry in lakes are affected by changes in atmospheric nitrogen deposition and by warming, and its effects on nutrient limitation of phytoplankton and zooplankton, nutrient regeneration and trophic transfer efficiencies, and productivity in northern boreal and subarctic lakes.

Recent Paper Summary

Lowered nutritional quality of plankton caused by global environmental changes. Global environmental changes reduce the levels of omega-3 polyunsaturated fatty acids in plankton of northern lakes, thereby lowering their supply to wildlife and humans.

This video summarizes the main findings of the research article: Lau, D. C. P., Jonsson, A., Isles, P. D., Creed, I. F., & Bergström, A.-K. (2021). Lowered nutritional quality of plankton caused by global environmental changes. Global Change Biology. https://doi.org/10.1111/gcb.15887


Current Projects


My Research in the News


PhD Students and Post-doctoral Researchers


Photos From the Field


Ann-Kristin Bergström’s Publications

View publications on DiVA or Google Scholar