A closer look at the changing behaviour of river fish
Fish, like many other species, are moving to higher latitudes to track their ‘climate niche’ due to global warming. However, fish in closed environments such as rivers have limited ability to track their climate niche since their limited movement between river catchments conditions their ‘behavioural thermoregulation’. However, little is known about how freshwater fish are changing their behaviour in rivers and how this makes fish populations resistant to the harmful effects of rising temperatures. The EU-funded THERMOS project will assess to what extent the behavioural thermoregulation of river fish is controlled by specific phenotypes within a pace-of-life syndrome that makes vulnerable populations resilient to climate change. The project will apply innovative methods to develop advanced predictive models to measure the resilience of vulnerable populations to global warming.