Author Archive

23 Dec 2018

The recurrent evolution of extremely resistant xylem

Highly resistant xylem has evolved multiple times over the past 400 million years. Scott A M MacAdam & Amanda A Cardoso Water is transported under tension in xylem and consequently is vulnerable to invasion by air and
30 Nov 2018

Covariation between tree size and shade tolerance modulates mixed-forest productivity

In tree communities, tree size inequality reduces productivity and interacts with tree shade tolerance to modulate stand productivity, with a higher productivity in stands where shade-intolerant species dominate shade-tolerant species in size. Abstract Positive diversity–productivity relationships have
4 Jun 2017

A non-stochastic portfolio model for optimizing the transformation of an even-aged forest stand to continuous cover forestry when information about return fluctuation is incomplete

Non-stochastic portfolio optimization of forest stands provides a good alternative to stochastic mean-variance optimization when available statistical data is incomplete. The suggested approach has a theoretical background in the areas of robust optimization, continuous multicriteria decision-making, and
4 Jun 2017

Xylem traits in European beech (Fagus sylvatica L.) display a large plasticity in response to canopy release

The position of trees in the canopy impacts xylem structure and its inter-annual variation. After canopy release, the increase in the hydraulic conductivity of growth rings was driven by an increase in radial growth in large trees,
17 Apr 2017

The effect of surface fire on tree ring growth of Pinus radiata trees

Pinus radiata trees showed significantly reduced basal area increments and increased latewood/earlywood ratios, when their stem was charred by surface fires even if no needle damage occurred. An interaction of fire damage and precipitation on growth was
17 Apr 2017

Quantifying micro-environmental variation in tropical rainforest understory at landscape scale by combining airborne LiDAR scanning and a sensor network

We combined aerial LiDAR and ground sensors to map the spatial variation in micro-environmental variables of the tropical forest understory. We show that these metrics depend on forest type and proximity to canopy gaps. Our study has
17 Apr 2017

Recent growth changes in Western European forests are driven by climate warming and structured across tree species climatic habitats

Recent growth changes (1980–2007) in Western European forests strongly vary across tree species, and range from +42% in mountain contexts to −17% in Mediterranean contexts. These changes reveal recent climate warming footprint and are structured by species’
27 Mar 2017

Quantifying competition in white spruce (Picea glauca) plantations.

In mixed forest plantations in sub-boreal forests with high levels of natural regeneration ingrowth, competition must be quantified differently for each species, with distant-independent indices working better for the planted species and distant-dependent indices for ingrown balsam
27 Mar 2017

A critical analysis of methods for rapid and nondestructive determination of wood density in standing trees

Field methods for rapid determination of wood density in trees have evolved from increment borer, torsiometer, Pilodyn, and nail withdrawal into sophisticated electronic tools of resistance drilling measurement. A partial resistance drilling approach coupled with knowledge of
9 Mar 2017

Forward selection in a maritime pine polycross progeny trial using pedigree reconstruction

Molecular markers were used for paternity recovery in a maritime pine (Pinus pinaster Ait.) polycross trial, facilitating forward selection. Different breeding strategies for seed orchard establishment were evaluated by comparing genetic gains and diversity. This work opens