Cross-Realm Ecological Connections for Spatial Conservation in the Aegean Sea

Conservation in the Aegean Sea demands a comprehensive understanding of how ecosystems interact across both marine and freshwater realms. A recent case study conducted under the INSPIRE integrated planning framework highlights the significance of cross-realm connectivity for achieving EU Biodiversity Strategy goals for 2030.

By considering species movements and threats’ propagation from river sub-catchments to coastal waters, we have identified priority conservation areas in the Greek territorial waters and river sub-catchments related to the Aegean Sea. The methodology emphasized capturing ecological and biophysical connectivity processes, particularly for multi-realm species and transitional habitats.

Different planning scenarios were tested, with the most effective outcome arising from integrating complex connectivity models within- and cross-realms while considering the full propagation of freshwater threats into marine areas. This approach proved essential for minimizing risks and maximizing conservation benefits.

The findings demonstrate that spatial conservation prioritization must extend beyond individual ecosystems and reflect the continuous nature of ecological processes across multiple realms.

These results were presented at the 7th International Marine Conservation Congress (IMCC7) in an oral presentation by Maria Vigo.

Reference: 

Vigo M., Markantonatou V., Hermoso V., Papazekou M., Katsanevakis S., and Giakoumi S., 2024. Conservation planning in the Eastern Mediterranean Sea accounting for cross-realm threat connectivity. Oral presentation at the 7th International Marine Conservation Congress, 13-18 October 2024.