Unprecedented herbivory threatens rear‐edge populations of Betula in southwestern Eurasia

Mediterranean rear‐edge populations of Betula , located at the southwestern Eurasian margin of the distribution range, represent unique reservoirs of genetic diversity. However, increasing densities of wild ungulates, enhanced dryness, and wildfires threaten their future persistence. A historical perspective on the past responses of these relict populations to changing herbivory, fire occurrence and climatic conditions may contribute to...