Acknowledgments

We acknowledge the Traditional Owners as the custodians of the land in and around Elsey National Park. We thank the Mangarrayi rangers, Elsey National Park rangers and Coodardie cattle station owners for access to sites. This project was funded by CSIRO’s Roper River Water Resource Assessment program and a CDU Rainmaker Grant. We thank Sébastien Lamontagne (project design and discussions); Adam Bourke, Diego Alvarez, Bart Edmeades and Jace Emberg (fieldwork); Greg Skrzypek and Douglas Ford (analyses); and Régis Burlett (advice on Cavitron). CD is supported by a fellowship from the Australian Research Council (DE220100852). AB acknowledges a Beatriu de Pinós MSCA-COFUND postdoctoral grant from the Government of Catalonia (2019BP00193) and funding from the Spanish Ministry of Science (Grant MICROCLIM, PID2020-117636GB-C21).