Is climate change shifting right whales’ migration?

A recent discussion sheds light on the complex ecosystem interactions that influence the behaviours of just one species. Scientists studying right whales in the north atlantic think that an observed shift in the whales’ recent migration patterns could be influenced by changes to their food supply. Warming seas and the impact of melting freshwater (including from ice sheets) entering the north-west Atlantic are likely to be factors that are changing when and where zooplankton – the whales’ main food source – are most plentiful.