The transition from seedlings into trees at alpine tree lines is a temperature‐limited process
that ultimately sets the tree line elevation at a global scale. As such, tree lines may be key …

Background The distribution and abundance of plants is controlled by the availability of
seeds and of sites suitable for establishment. The relative importance of these two …

Alpine treelines are considered ecological monitors recording the impacts of climate change
on trees and forests. To date, most treeline research has focused on how climate change …

The prevailing hypothesis states that treeline positions are defined by the direct effects of
cold temperatures on cell division and tree growth. Meanwhile, photosynthesis is thought to …

Background: Past research and ecological theory supports the hypothesis that alpine plants
should be predominantly clonal, long-lived and reproduce by seed infrequently. Aims: To …

Extreme climate events such as heat waves or severe drought have the potential to
fundamentally alter species dynamics, and are expected to increase in frequency in the …

Secondary forest succession can be an effective and low-cost strategy to increase forest
cover and the associated biodiversity and soil functions. However, little is known about how …

Abstract Aim Trembling aspen (Populus tremuloides Michx.) is absent in the upper foothills
region of west‐central Alberta because of the cold conditions and short growing season at …

Climate warming is releasing carbon from soils around the world, constituting a positive
climate feedback. Warming is also causing species to expand their ranges into new …

Little is known about how soil properties control tree growth at its upper limit. This paper
reviews the state of knowledge and discusses the results specifically related to ecozones, to …