Dag Olav Hessen

Dag Olav Hessen is a Professor at the University of Oslo, leading the Center for Biogeochemistry in the Anthropocene (CBA). The center integrates expertise from the Department of Life Sciences, Earth Sciences, and Chemistry to investigate climate-carbon-ecosystem interactions in northern latitudes.

• Research Focus: Climate change impacts on freshwater and marine ecosystems
• Key Areas: Ecological stoichiometry, genome size, pelagic food webs, permafrost thaw
• Methodology: Interdisciplinary approaches combining fieldwork, lab experiments, and modeling

His recent publications address critical issues like greenhouse gas dynamics in thawing permafrost, tipping points in lake ecosystems, and global change effects on zooplankton communities. Collaborative work spans Arctic char vulnerability, DOM-contaminant interactions, and climate governance frameworks.