DINáMICA TEMPORAL DEL PATRóN DEL PAISAJE EN EL áREA DE LA HIDROELéCTRICA PORCE II, (ANTIOQUIA, COLOMBIA) DE 1961 AL 2001

landscape structure may be characterized using indexes to compare different ecosystems, identifying significant changes through time and relative landscape dynamics and pattern to ecological functions. the aim of this study was to determine landscape pattern changes over time in the porce ii hydroelectric (antioquia, colombia). we used aerial photographies from 1961 and 1999 and thematic maps generated from an ikonos satellite image from 2001. the landscape patterns were quantified by considering parameters of shape, composition and configuration. in general it was observed that during the past 40 years the shape and structure were conserved, but with an increase in the number of patches that implies a more complex landscape structure associated with vegetational changes. at the present time, the dominant land cover is medium height regrowth followed by low height regrowth, primary forest, and secondary forest being the last three the most complex in terms of their shapes. the most dispersed coverages were pasture and primary forest, but detailed study of individual cobertures it was observed that connectivity has increased over time.