CBS, PBL, RIVM and Wageningen UR provide the Compendium with data they manage themselves, but also with data that are made available via third parties. The Wageningen UR contribution is coordinated by their department ‘WOT Natuur en Milieu (Legal Research Tasks in the policy area Nature & Environment)’ with data mainly from Alterra, LEI Wageningen UR and the Institute for Marine Resources & Ecosystem Studies (IMARES). Other parties involved include Rijkswaterstaat Waterdienst, Netherlands Enterprise Agency (RVO), private data-managing organisations and their umbrella organisation ‘Stichting voor Veld-Onderzoek Flora en Fauna (VOFF)’ and the Dutch Ministry of Economic Affairs and Climate Policy (co-funder of CBS’s statistics on nature).