Producción primaria requerida para sustentar el desembarque de peces pelágicos en Chile

摘要: The sustainability of the current landing pelagic fish in Chile (over 7 millions tons 1994 and 1995) is analyzed using as a focus productive capacity Chilean coastal upwelling ecosystem relation to mean annual catch during period 1989-96. primary production required (PPR) by main species estimated on basis average catch, trophic level resources ecotrophic efficiency transfer. Furthermore, global indicators surplus these fisheries are relationship between total catches fishing effort national fleet. Three geographic zones considered: northern (18°20' S-29°15' S), central-northern (29°15' S-32°10' S) central-southern (32°10' S-39°23' S). assumption made that area system extends 60 nautical miles from coast each region. PPR reaches values 137, 34 614 gCm -2 year -1 , respectively for northern, zones. high value zone due landings Trachurus symmetricus murphyi, which given its oceanic nature highly migratory behaviour can feed different kinds ecosystems. Eliminating this analysis, remaining 55