Fig.Ā 2From: Extreme drought triggers parallel shifts in wood anatomical and physiological traits in upper treeline of the MediterraneanĀ AndesClimatic variability from 1979 to 2020 in central Chile: A z values of maximum temperature during the austral summer (December to February); B z values of precipitation in winterāspring (MayāNovember). In both climatic series, mean values (Ā±āSE) across the drought periods are showed. C Annual Palmer Drought Severity Index for the study region (30ā35Ā°S, 70.5ā71.0Ā°W) for the period 2000ā2020, with the three drought periods highlighted (BMd before megadrought, Md megadrought, Hd hyperdrought). We compared the three periods using percentiles (Px) from the period 1901ā2020. In addition, we show the spatial variation of the PDSI in exceptional years using data from the South American Drought Atlas SADA (Morales et al. 2020)Back to article page