 Together, Special Protection Areas and Special Areas of Conservation form the Natura 2000 network of protected areas.Furthermore, the Natura 2000 network is the EU contribution to the "Emerald network" of Areas of Special Conservation Interest set up under the Bern Convention on the conservation of European wildlife and natural habitats.Natura 2000 is also a key contribution to the Program of Work of Protected Areas of the Convention on Biological Diversity.