Joshua M. Halman

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: The results suggest that low foliar sugar concentrations and APX activity, and reduced cold tolerance in trees in the reference watershed contributed to their high vulnerability to winter injury in 2003.

TL;DR: It was found that trees on Ca-treated plots preferentially used C resources for growth and reproductive processes, whereas Al-treated trees devoted C to defense-based processes, suggesting that sugar maples growing in native forests may be more stressed than previously perceived.

TL;DR: In this article, the authors evaluated the influence of calcium (Ca) addition on the physiology of red spruce during the cold season, measuring concentrations of foliar polyamines and free amino acids (putative stress protection compounds), chlorophyll (a key photosystem component), and sapwood area (a proxy for foliar bio- mass).

TL;DR: In this article, the root cold tolerance of yellow-cedar (Callitropsis nootkatensis) was measured using foliar cations as an assay of root depth in one forest in Ketchikan, Alaska.