Validación de dos índices biológicos de integridad (IBI) en la subcuenca del río Angulo en el centro de México

摘要: Validation of two indices biological integrity (IBI) for the Angulo River subbasin in Central Mexico. Efforts to halt freshwater ecosystem degradation central Mexico can benefit from using bio-mon- itoring tools that reflect condition their biotic integrity. We analyzed applicability fish-based data lotic and lentic systems (Lerma-Chapala basin). Both independent our own collections during consecutive years, existing information detailing ecological attributes each species, were used calculate 16 sites habitats. assessed environmental quality by combining evaluations water habitat site. found with poor, regular good Our study did not find quality. Fish-based IBI scores strongly significantly correlated assessment techniques. adequate at representing conditions most sites. These results expand area where a system be used, constitute an initial validation IBI. suggest these bio-monitoring future conservation efforts ecosystems Middle Lerma Basin. Rev. Biol. Trop. 60 (4): 1669-1685. Epub 2012 December 01.