With regard to natural areas, the representatives of IUCN informed the Committee that their expectation was that, according to the criteria currently adopted, approximately 5 to 10 per cent of the 2,000 natural areas which are listed on the United Nations List of National Parks and Protected Areas would meet the criteria for inscription on the World Heritage List. They also informed the Committee that they expected to present the first world list of potential natural World Heritage sites at the World National Parks Congress in October 1982. They explained that this list was being prepared from information supplied by experts within the countries and regions concerned. It was however agreed that States Parties should be invited to develop tentative lists as quickly as possible. The Committee agreed that for natural properties the greatest problems related to integrity and management and decided to :
(a) request IUCN to make comments and recommendations on the integrity and future management of each property recommended by the Bureau, during its presentation to the Committee ;
(b) encourage States Parties to prepare a management plan appropriate to the capacity of the country concerned for each property nominated and to make such plans available when technical co-operation is requested ;
(c) request IUCN to continue monitoring the progress of work undertaken for the preservation of World Heritage properties on behalf of the Committee.