Researchers mapped 5,600km of Canada’s coast using 170 years of records; kelp persistence reached 88% in cold waters but fell to 52% in warmer sheltered areas

• The study mapped about 5,600 kilometres of coastline on the West Coast of Vancouver Island and found that around 88 per cent of kelp forests in cooler regions persisted over the past century.
• In comparison, persistence fell to 52 per cent in the warmest and most