Mountains are the planet’s water towers, supplying fresh water to downstream lowlands, deltas, and coastal regions. Climate change and intensifying human pressures are modifying water availability, quality, and timing along the mountain-to-ocean continuum. These changes affect not only biodiversity, agriculture, hydropower, and drinking water supply, but also the habitability of our environments and the resilience of the socio-ecosystems we live in.

Addressing these interconnected challenges requires going beyond disciplinary boundaries. This session invites contributions that integrate hydrology, soil science, ecology, geochemistry, economics, and governance to co-design knowledge and solutions for sustainable water management across the continuum mountain-ocean. We especially welcome inter- and transdisciplinary approaches that:

- Link physical and ecological processes from headwaters to aquifers, rivers, wetlands, and coastal zones.
- Leverage opportunities in modeling, monitoring, and digital tools to assess vulnerabilities and guide adaptive management.
- Co-develop strategies with stakeholders, communities, and policymakers to strengthen resilience of water resources, ecosystems, and societies.
- Explore governance frameworks and participatory approaches that connect science to practice at multiple scales.

The session will showcase insights from European regional initiatives, including WATERWISE, which focuses on Alpine headwaters, and Blue Transition, which promotes integrated water management in the North Sea Region.