Other effective area-based conservation measures

Other effective area-based conservation measures (OECMs) are sites outside of protected areas that are governed and managed in ways that deliver the long-term in situ conservation of biodiversity. As of March 2023, 829 such sites have been reported to the World Database on Other Effective Area-based Conservation Measures, managed by the UN Environment Programme World Conservation Monitoring Centre. OECMs cover 3,094,741 km² (1,194,886 sq mi) of the Earth's surface, accounting for 2,716,531 km² (1,048,858 sq mi) on land and 378,209 km² (146,027 sq mi) in the ocean.