Data for: The vulnerability of the Nothofagus forest-steppe ecotone to climate change: palaeoecological evidence from Tierra del Fuego (~53°S).

Excel spreadsheet (.xlsx) containing 1) Pollen, Spore, Algae and Charcoal count data and the taxa used by the constrained incremental sum of squares cluster analysis; 2) Pollen preservation data 2) Geochemical data of the glass components of identified tephra layers; 3) the radiocarbon and tephrochronology data used to construct the age-depth model that contrains the palynological record; 4) loss-on-ignition (at 550 degrees C.) to derive percentage organic content.