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On a global scale, climate-driven high-altitude treelines occur at surprisingly similar growing-season temperatures (means from 5.5 to 7.5 °C), whereas season length varies between 2.5 and 12 months, and many other climatic constraints which have been suggested as contributing to alpine treeline formation show large regional variations. In order to resolve this apparent discrepancy, which has hindered...
Trees are taller than shrubs, grasses, and herbs. What is the disadvantage of being tall so that trees are restricted to warmer regions than low stature life forms? This article offers a brief review of the current state of biological treeline theory, and then explores the significance of tallness from a carbon balance, freezing resistance, and microclimatological perspective. It will be argued that...
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