Direct and Indirect Effects of Environmental Limitations on White Spruce Xylem Anatomy at Treeline.

ABSTRACT: Treeline ecosystems are of great scientific interest to study the effects of limiting environmental conditions on tree growth. However, tree growth is multidimensional, with complex interactions between height and radial growth. In this study, we aimed to disentangle effects of height and climate on xylem anatomy of white spruce [Picea glauca (Moench) Voss] at three treeline sites in Alaska; i.e., one warm and drought-limited, and two cold, temperature-limited. To analyze general growth differences between trees from different sites, we used data on annual ring width, diameter at breast height (DBH), and tree height. A representative subset of the samples was used to investigate xylem anatomical traits. We then used linear mixed-effects models to estimate the effects of height and c

SUBMITTER: Pampuch T 

PROVIDER: S-EPMC8573320 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature