The AquaLinks tool implements linkage chains relating human activities (A), the associated pressures (P), the ecosystems components on which they act (Ec) and the services (ESS) and functions (EF) that they provide (Fig. 1). The links between the different components are based one information produced by the eight case studies using expert judgement within the AQUACROSS project. The database underlying the different linkage chains is quite comprehensive capturing a wide diversity of spatial scales, ecosystem components, geographic contexts and social contexts at European level (DOI:10.5281/zenodo.1101161). Two versions are available: - AquaLinksTool.dmg (version for OSX systems) -AquaLinksTool.zip (version for windows systems - higher than Windows 7)