High Quality Content by WIKIPEDIA articles! The enlisting of protected areas is the fundamental strategy being used towards the conservation of the world`s natural environment and biodiversity. The International Union for the Conservation of Nature (IUCN) has developed the Protected Area Management Categories System to define, record and classify the wide variety of specific aims and concerns when categorising protected areas and their objectives. This categorisation method is recognised on a global scale by national governments and international bodies such as the United Nations and the Convention on Biological Diversity.