Aerial Shot of Delta Axiou River National Park, Natura 2000, Mussel farmers houses

axiou river delta greece loudia aliakmonas ecology river basin national park natura 2000 new orleans of greece biodiversity ecosystem services cultural heritage agricultural practices irrigation fishing tourism anthropogenic impacts pollution restoration efforts hydraulic engineering wetland river management flood control navigation hydroelectric power riparian rights watershed management river morphology sediment transport water quality monitoring topography geomorphology landforms terrain analysis elevation models relief features slope analysis geological formations surface morphology landscape classification mussel farmers houses