Tuesday December 30, 2025
Polar Journal —
Mackerel icefish are a key component of South Georgia’s marine ecosystem. They are an important food source for seals, penguins, and other marine animals. If their offspring are threatened, the effects ripple through the entire food chain.
Glacier melt alters currents
The study was led by Dr. Joanna Zanker of the British Antarctic Survey. As part of her doctoral research, she investigated for the first time in detail how ocean currents in South Georgia’s largest fjord respond to climatic changes.