Shelly A. Rayback

TL;DR: This article used repeat photography, long-term ecological monitoring and dendrochronology to document shrub expansion in arctic, high-latitude and alpine tundra.

TL;DR: In this article, the authors analyzed circumpolar data from 37 Arctic and alpine sites in 9 countries, including 25 species, and ∼42,000 annual growth records from 1,821 individuals, and demonstrated that the sensitivity of shrub growth to climate was heterogeneous, with European sites showing greater summer temperature sensitivity than North American sites, and higher at sites with greater soil moisture and for taller shrubs (for example, alders and willows) growing at their northern or upper elevational range edges.

TL;DR: Drought-induced reductions in tree growth were greatest when the droughts occurred during early- season peaks in radial growth, especially for trees growing in the warmest, driest regions, and it is found that future increases in early-season PET may exacerbate these effects, and potentially offset gains in C uptake and storage in ENA owing to other global change factors.

TL;DR: In this article, the authors present a review of existing and developing methods to measure radial and axial growth, estimate age, and assess growth dynamics in relation to environmental variables in arctic and alpine regions.

TL;DR: In this article, the authors used retrospective analysis of the widespread evergreen dwarf-shrub, Cassiope tetragona, to reconstruct average summer air temperature for Alexandra Fiord, Ellesmere Island, Canada.