Alexandra Kraberg

Dr. Alexandra Kraberg is a Researcher and Time Series Coordinator at the Alfred Wegener Institute (AWI), leading the Polar Biological Oceanography department within the Biosciences school. Her work focuses on phytoplankton ecology, plankton biogeography, and diatom-parasite dynamics. She co-chairs the ICES Working Group on Phytoplankton and Microbial Ecology (WGPME) and coordinates the PLANKTON*NET database.

Her research investigates climate change impacts on polar ecosystems, microbial interactions, and Arctic phytoplankton responses to environmental stressors. Notable projects include the MOSAiC expedition and studies on marine heatwaves, cold spells, and symbiotic nitrogen fixation. She emphasizes open science through data publishing platforms like PANGAEA.

Key contributions include developing protocols for parasitic detection in plankton, advancing understanding of Arctic primary production, and linking long-term observations to global environmental shifts. Her work spans biogeochemistry, marine microbiology, and climate science, with a focus on Arctic and North Sea ecosystems.