sentences:  However, the collaborative efforts between the Aymara and the Bolivian national parks authority (Servicio Nacional de Áreas Protegidas, SERNAP) did not begin until 1998, when SERNAP was formed.Sajama National Park did not have a formal administration nor park rangers until 1995, and relations between the Aymara people and this early park administration was essentially nonexistent due to top-down approaches and policies.Sajama's co-administrative Management Committee now includes representatives from each of the communities, the sub-alcaldía (local administration's decentralized office in Sajama village), the mayor of Curahuara de Carangas, a representative of the prefectural administration, and delegates from different NGOs active in the area.