Arctic Ocean reaches tipping point that could be dire for marine life

 

Image courtesy of European Union, Copernicus Sentinel-2 imagery,

Joel Kontinen

As sea ice melts, more light will infiltrate the Arctic Ocean, allowing phytoplankton and other marine life to flourish – or so we thought. In fact, phytoplankton growth in some parts of the Arctic is now starving other parts of a crucial nutrient, a tipping point that could spell trouble for seals, polar bears and even commercial fish in the north Atlantic.

The Arctic Ocean might be dire for marina life. As the sea ice melts, it causes more sunlight in the Arctic Ocean. This causes phytoplankton to grow and has depleted a crucial nutrient, which could severely affect animals higher up the food chain.

Phytoplankton, the tiny photosynthesising organisms that form the basis of the marine food chain, have been increasing across the Arctic, according to satellite measurements of the green pigment chlorophyll. Algal blooms there have broken records.

Source:  

 Alec Luhn 2026 Arctic Ocean reaches tipping point that could be dire for marine life | New Scientist 16 June