The Ecosystems Research and Development Bureau (ERDB) is the principal research and development (R & D) unit of the Department of Environment and Natural Resources (DENR). Its R & D and extension activities are focused on the five major ecosystems of the Philippines which include forests, upland farms, grassland and degraded areas, coastal zone and freshwater, and urban areas.

The ERDB was created in June 1987 under Executive Order (EO) 192 that merged the function of the former Forest Research Institute (FORI) and the National Mangrove Committee. Its headquarters is located at the University of the Philippines Los Baños, College of Forestry and Natural Resources (UPLB-CFNR) campus in the municipality of Los Baños, province of Laguna, Philippines about 65 kms south of Manila. 

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