Before revision: Expansion of the global terrestrial protected area system, Biological Conservation, 142: 2166–2174 (2009) Map of the Republic of Niger's protected areas using polygon data from the WDPAProtected Areas in the Republic of Niger Data held in the WDPA is made up of both 'attribute' and 'spatial' information.
After revision: Map of the Republic of Niger's protected areas using polygon data from the WDPAProtected Areas in the Republic of Niger Data held in the WDPA is made up of both 'attribute' and 'spatial' information.