In the experimental plots, some were selectively logged, either to remove bigger trees, to mimic one lucrative logging approach, or to leave a wide range of tree sizes.
In other areas with sandy soil, there was a much wider range of tree types.
Spruces had the slowest diameter increment across a range of tree sizes.
The five trees from the control treatment were selected for a range of tree size and distribution in the stand.
Both studies used large samples and a wide range of tree diameter compiled from tropical region, including Indonesia.
The nine trialled species were a mix of evergreen and deciduous trees and exhibited a range of tree form.
However, we excluded deformed trees and included a wide range of tree genera or family as much as possible.
Sites spanned the full range of tree densities in the study area, from zero to over 100 trees per hectare.
Models were calibrated on the French control dataset, including a broad range of tree size, age and geographical conditions.
Beetles readily tunneled into twigs from a wide range of tree species, but survival was generally low.
For all three indices, a higher index value reflects a wider range of tree diameters and heights and consequently greater complexity (Lexerød and Eid 2006).
