From glacial refugia to hydrological microrefugia: factors and processes driving the persistence of the climate relict tree Zelkova sicula

Giuseppe Garfi
With only two tiny populations, the climate relict Zelkova sicula (Sicily, Italy) is one of the rarest trees in the world. It also represents the most marginal member of genus Zelkova that was widespread in the broadleaved forests thriving in warm-temperate climates throughout Eurasia until the Last Glacial Age. Occurring at the westernmost range of the genus under typical Mediterranean climate, the micro-topographic settings have always appeared crucial for the survival of this Sicilian relict....
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