Data used to calculate indicators have been collected and collated mainly from Technical Reports published by the Chilean Fishery Research Fund (Fondo de Investigación Pesquera). These reports display information related to research carried out (mostly annually) to estimate the biomass of the main fishery resources off central Chile. Reports are available on-line at http://www.fip.cl.
Landings data were obtained from the Landings Statistics Yearbooks published by the Chilean National Fisheries Service (Servicio Nacional de Pesca). Since the late 1990s, this information is available on-line at http://www.sernapesca.cl.