Boreal aspen understory diversity along a continental gradient

This dataset contains vascular plant species cover and diversity indices
(richness, evenness, and beta diversity) of understory communities and
site-level environmental variables from 33 mature aspen (Populus
tremuloides) stands across the Canadian boreal forest. The objective of
the study was to evaluate the relative impacts of local and regional
environmental conditions on vascular plant community composition and
diversity in the boreal forest. We measured community composition and
vegetation diversity indices of the vascular understory in 400 m2 plots
and measured environmental variables at the local (drainage, nutrient and
light availability, site heterogeneity) and regional (annual temperature
and precipitation, fire weather index, landscape heterogeneity)
scales.