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  • 1 Universidad Nacional del Comahue Centro Regional Universitario Bariloche 8400 Bariloche, RN Argentina
  • | 2 Comisión Nacional de Energía Atómica, RN Laboratorio de Análisis por Activación Neutrónica, Centro Atómico Bariloche Argentina
  • | 3 Universidad Nacional de Cuyo Instituto Balseiro 8400 Bariloche, RN Argentina
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The elemental composition of lichens from remote southern South America regions has been studied with analytical and statistical techniques to determine if the values obtained reflect species, growth forms or habitat characteristics. The enrichment factors are calculated discriminated by species and collection site and compared with data available in the literature. The elemental concentrations are standardized and compared for different species. The information was statistically processed, a cluster analysis was performed using the three first principal axes of the PCA; the three groups formed are presented. Their relationship with the species, collection sites and the lichen growth forms are interpreted.