Fig. 1.

The research area showing fractional cover by southern bracken as derived from Landsat TM data with the probability guided spectral unmixing technique (Göttlicher et al. 2009); BS experimental bracken site and micrometeorological station, ECSF Estación Científica San Francisco, ECSF met Meteorological station of the Estación, TS1 and Cerro met are meteorological stations located at 2,660 and 3,180 m asl, respectively. Grey shades indicate different bracken coverage per pixel, white means bracken-free pixel