Why tree lines are lower on islands—Climatic and biogeographic effects hold the answer

Aim To determine the global position of tree line isotherms, compare it with observed local tree limits on islands and mainlands, and disentangle the potential drivers of a difference between tree line and local tree limit. Location Global. Time period 1979–2013. Major taxa studied Trees. Methods We modelled the potential climatic tree line based on monthly temperatures and precipitation for the period 1979–2013. We then compared the potential...