From Canada, this is a stark illustration of the suspected impact of climate change on our precious aquatic ecosystems. It’s a reminder that in Scotland the speed and scale of our own river habitat restoration work needs to accelerate.

A research crew from Simon Fraser University in British Columbia was out monitoring salmon in Neekas river. Every autumn, they carry out creek walks to count the number of salmon that make it back to the spawning grounds. This year, they were shocked at what they found.