A review paper out on forest ecosystem management in Oxford Research Encyclopedia of Environmental Sciences

Kuuluvainen, T. 2016. Ecosystem management of the boreal forest. Oxford Research Encyclopedia of Environmental Sciences. DOI: 10.1093/acrefore/9780199389414.013.15

The paper reviews the current understanding and ideas of ecosystem management when applied to the boreal forest. Declines in managed forest biodiversity and structural complexity, combined with rapidly changing climatic conditions, can pose a risk to forest health and long-term provisioning of important ecosystem goods and services. I concluded that ecosystem management in the boreal forest calls for a transition from plantation-type forestry towards more diversified management inspired by natural forest structure and dynamics.

Take a look at the article here

Determining tree stem volume in R, using taper curves

Taper curves (i.e., functions describing the shape of a tree stem) can be used for conveniently computing the volume of a tree stem, using volume integrals, but they are not very commonly used in ecological research. The curves and their volume integrals are particularly convenient for computing the volume of snapped trees, where the shape of the stem (taper) is determined by the tree diameter and the height of the tree before snapping, and the volume is computed from the base of the tree to the snapping height (or any other point along the stem). Same functions can be used to compute the volume of a fallen part of a snapped tree just as easily.

We’ve written an easy-to-use R-script for several tree species in regions we are working in, based on previously published taper curves: Scots pine, Norway spruce, and birch in Finland, as well as black spruce and balsam fir in Quebec, Canada. Take a look at the script here.