Aerial Bird Eye View Shot of River Dock with Boat in Delta Evrou Greece

delta evrou river ecosystem greece streamflow river morphology riverine habitats evros river fishing boat evros delta river greek national parks wetland conservation birdwatching biodiversity hotspot ramsar site ecosystem preservation protected areas wildlife sanctuary environmental protection nature reserve ecotourism destination endangered species habitat bird migration route environmental education conservation management avian species diversity coastal habitats ecological significance protected wetlands bird species conservation migratory birds aquatic habitats delta fauna nature conservation efforts ecological research sustainable tourism environmental monitoring delta wetland restoration natural heritage