Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
In our view, Jonathan Tonkin and colleagues’ modelling approach is just one of a raft of measures needed to manage freshwater ecosystems and mitigate conflicts between their use and conservation (see Nature570, 301–303; 2019).