Complex sentence: Data for the WDPA is collected from international convention secretariats, governments and collaborating NGOs, but the role of custodian is allocated to the Protected Areas Programme of UNEP-WCMC, based in Cambridge, UK, who have hosted the database since its creation in 1981.
Split into simpler sentences: Data for the WDPA is collected from international convention secretariats, governments and collaborating NGOs. The custodian of the WDPA is the Protected Areas Programme of UNEP-WCMC, based in Cambridge, UK, who have hosted the database since its creation in 1981.