Since 1996, our research in the Arctic and alpine
regions reaches across the globe.


Copyright 2012 Cristian Gudasz

Ann-Kristin Bergström
(Associate Professor)

Phone: +46 90 786 95 44
Email: ann-kristin.bergstrom@umu.se
Umeå University Webpage


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.


Current Projects



Ann-Kristine Bergström's Publications