# Aitoliko Lagoon ecological crisis > Live situation record from CLSTR: https://clstr.news/situations/aitoliko-lagoon-ecological-crisis > Updated: 2026-09-25T10:28:20.000Z. Sources: 5. Developments: 2. The Aitoliko Lagoon in Greece is experiencing a severe ecological crisis driven by eutrophication. This process, caused by excessive nutrients from agricultural, industrial, and domestic waste, has led to rapid algae growth, oxygen depletion, mass fish deaths, and the release of toxic hydrogen sulfide gas. Local residents and professional fishermen have initiated protests, including bridge blockades, to demand government action regarding malfunctioning biological treatment systems. Political groups, including the Greens-Ecologists, have identified long-term causes such as 1970s vascular improvement interventions that disrupted natural water flow, alongside modern stressors like rising temperatures and pesticide inflow. While some technical solutions like embankment removal and upgrading treatment plants have been proposed, advocates are calling for comprehensive, ecosystem-based planning to avoid fragmented interventions that might merely relocate the environmental issues. ## Timeline ### 2026-09-25: Aitoliko Lagoon faces environmental crisis as Greens-Ecologists demand ecosystem solutions Greens-Ecologists are calling for ecosystem-based solutions for the Aitoliko Lagoon in Greece to combat severe eutrophication, algae blooms, and threats to marine life caused by historical and modern factors. 2 sources. https://clstr.news/cluster/aitoliko-lagoon-faces-environmental-crisis-as-greens-ecologists-demand-ecosystem-solutions ### 2026-09-11: Aitoliko Lagoon: Residents and fishermen protest ecological crisis Residents and fishermen are protesting the ecological collapse of the Aitoliko Lagoon due to eutrophication, toxic gas emissions, and mass fish deaths, calling for urgent government intervention. 4 sources. https://clstr.news/cluster/aitoliko-lagoon-residents-and-fishermen-protest-ecological-crisis --- Cite as: Aitoliko Lagoon ecological crisis. CLSTR, https://clstr.news/situations/aitoliko-lagoon-ecological-crisis