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Neobičan prirodni fenomen koji se krajem 2025. godine pojavio na akumulacionom jezeru Lipno u Češkoj izazvao je veliku pažnju naučne zajednice. Površina jezera bila je prekrivena ledom neobične zelene boje, pojavom toliko retkom da do sada nije postojalo dovoljno podataka za njeno detaljno objašnjenje, prenosi portal iDNES.
TL;DR
- An unusual green ice phenomenon occurred on Lipno lake in the Czech Republic at the end of 2025.
- Hydrologists from the Biological Center of the Czech Academy of Sciences analyzed samples and confirmed the green color was caused by the cyanobacteria Woronichinia naegeliana.
- This bacteria thrives on excess nutrients, particularly phosphorus, largely due to human impact.
- The prolonged presence of cyanobacteria biomass, unusual for colder months, combined with stable weather and freezing temperatures, led to the formation of 'green ice'.
- The green ice disappeared after heavy snowfall reduced light penetration.
- This event is linked to long-term climate change and the process of eutrophication, suggesting such surprising phenomena may become more frequent.
- The detailed observations from Lipno lake add to the limited global documentation of cyanobacteria existing under ice cover.