× Information on this section of ECOLEX comes from the InforMEA Portal which compiled information from MEA Secretariats with the support of the European Union. The accuracy of the information displayed is the responsibility of the originating data source. In case of discrepancy the information as displayed on the respective MEA website prevails. Amendments to the criteria for the inclusion of natural properties in the World Heritage List and guidelines for the evaluation of nominations by IUCN Tipo de documento Decision Número de referencia XI.39 Fecha Oct 22, 1979 FuenteUNEP, InforMEA Estado Activo Materia Especies silvestres y ecosistemas Tratado Convención para la Protección del Patrimonio Mundial, Cultural y Natural (Nov 23, 1972) Reunión 3e session du Comité Página web whc.unesco.org Resumen The Committee considered the complex issues concerning sites occupied by migratory species on a seasonal basis and decided to add to paragraph 11 on integrity in the "Operational Guidelines" a new sub-paragraph (v) as follows: "In cases of migratory species, integrity will require critical areas necessary for the survival of the species to be included in the nomination. States which are parties to the Convention are requested to seek the co-operation of other States which contain seasonable sites for populations of World Heritage species so as to ensure that these species are protected throughout their full life cycle. Agreements of this nature should be noted in the nomination".