Resumen:
The Tropical Montane Cloud Forests (TMCF) of South America are ecosystems facing rapid changes due to
global warming. Herein, we used species climatic niche models to reconstruct the climatic boundaries of
TMCF and to predict range shifts in climate change scenarios. Thirty-two species from three taxonomic
groups (plants, birds, andamphibians) weremodelledusing community-levelnichemodelsunder current
and future climatic scenarios, as determined by two Global Climate Models (GCMs) for the year 2050. The
community-level reconstructions were used to detect the overlap of TMCF with surrounding ecosystems
and with current protected areas (PA). Approximate 42–54% area reduction and 207–429 m upward
elevational shift was predicted under climate scenarios. Accordingly, severe environmental contractions
(loss of suitability area) due to climate change were detected by our models. TMCF area within PA may
increase 17–38% by 2050. We identified transition zones rather than clear limits of vegetationa
