MOSE protects Venice, but impacts its lagoon

Climate change adaptation measures can generate unintended environmental consequences, particularly in vulnerable coastal systems. A new study conducted by OGS, recently published in Scientific Reports, analyzes the delicate balance between the increasingly frequent use of MOSE and its effects on the Venice Lagoon ecosystem.

With climate change-induced sea level rise, closures of the MOSE barrier are projected to become more frequent and prolonged. The research team aimed to analyze the trade-offs (cost-benefit balances) of this adaptation measure and understand the potential impacts of prolonged isolation on the lagoon ecosystem.

Specifically, lagoon conditions were evaluated under two scenarios: one with high greenhouse gas emissions and another with low emissions. The results show that while MOSE effectively limits sea level rise within the lagoon, it significantly increases water flushing (residence) time.

These local-level assessments are not only essential for managing site-specific vulnerabilities, but also provide vital insights to guide regional strategies and contribute to the development of robust climate policies. Accurate projections of future changes are essential for informing both mitigation policies—which target the root causes of climate change—and adaptation measures, which focus on managing its consequences.

Crediti foto: ESA