The Natura 2000 Network is a European ecological network that results from the implementation of two essential community directives: the Birds Directive and the Habitats Directive - transposed into domestic law by Decree-Law No. 140/99, of April 24, as amended given by Decree-Law no. 49/2005, of February 24th, amended by Decree-Law no. 156-A/2013 of November 8th. This supranational network covers areas designated as Special Conservation Zones (ZEC) and Special Protection Zones (ZPE).

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The Santo Isidro property is completely included in the Natura 2000 Network, being an integral part of the ZEC and ZPE. Furthermore, it is recognized as a Site of Community Interest (SIC) , as stipulated by the RAMSAR convention.