Dr. Ann Kristin Bergström

Biography

Ann-Kristin Bergström is a Professor at Umeå University specializing in the effects of climate change on northern aquatic ecosystems. Her research focuses on the productivity and food web structure influenced by environmental changes, particularly in lake ecosystems. Bergström has extensively studied the importance of organic matter, specifically humic substances, and nutrients such as nitrogen and phosphorus, which are critical for the productivity of these systems. Her current projects involve assessing the impacts of global climate change on lake water biogeochemistry, particularly with regard to nutrient availability and the stoichiometry of nitrogen to phosphorus in lakes affected by atmospheric nitrogen deposition and warming. She has also investigated the consequences of nutrient limitation on phytoplankton and zooplankton productivity as well as nutrient regeneration and trophic transfer efficiencies in northern boreal and subarctic lakes. Additionally, Bergström is a member of the Biogeochemistry research group and is involved in various research initiatives aimed at understanding and predicting changes in alpine lake productivity in a changing climate.

Research Interests