Winter Green Ice: Cyanobacteria Signal Climate Shifts at Lake Lipno
Green patches on Lake Lipno’s ice were caused by winter cyanobacteria blooms, an unusual sign of nutrient pollution and a warming climate. Researchers documented cyanobacterial eyes and explained the blooms persisted into December before dissipating after heavy snowfall, warning that such green ice could become more common as eutrophication and climate change reshape ecosystems.